CN2047721U - Light anchor bolts of quick-hardening cement and their installment connector - Google Patents
Light anchor bolts of quick-hardening cement and their installment connector Download PDFInfo
- Publication number
- CN2047721U CN2047721U CN 89209059 CN89209059U CN2047721U CN 2047721 U CN2047721 U CN 2047721U CN 89209059 CN89209059 CN 89209059 CN 89209059 U CN89209059 U CN 89209059U CN 2047721 U CN2047721 U CN 2047721U
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- anchor pole
- anchor
- welded
- connector
- steel
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Abstract
The utility model discloses a light anchor bolt of quick-hardening cement and their installment connector. The anchor head of the anchor bolt is welded with the short steel bar, and the bolt body is provided with a densification stop grouting ring. The tail part of the anchor bolt is welded with a steel baffle ring to support a supporting plate. The connector is composed of a short drill bolt and a slotted head whose both ends are opened the grooves. The anchor bolt can be arranged by using a rock drill by means of the connector. The production and the installation are convenient and quick, can save the bolt type rolled steel above 30% rolled steel and installation time about 50% and assure the installation quality. The anchor bolt is suitable for various quick-hardening cement reels used at present.
Description
The utility model belongs to mine and underground engineering support technical field, particularly rapid setting cement anchor pole and erecting device thereof.
The anchor pole kind of existing mine support is a lot, and the requirement to " advanced in performance, easy to use, low price " respectively has pluses and minuses.With regard to the fast hydraulic cement anchor pole that occurs in recent years, price comparison is cheap, and general geological conditions all is suitable for, but because its constructional shortcoming causes installation procedure many, the time is long, labour intensity is big, and rod body material can not be given full play to supporting role, even causes hidden dangers in project.When this anchor pole is installed, earlier the cement package is gone in the petrosal foramen, insert anchor pole again, then stir or the tamping cement mortar, overlap supporting plate at last, fastening nut.The whole erection process all is manually-operated basically.Because above-mentioned operation all is to finish on the area head of new quick-fried pick, the operating time is long, and the workman is not only tired, and is on the hazard safely, and installation quality also is difficult to guarantee sometimes.Roll bolt especially is installed in large section roadway, and the problems referred to above are more outstanding.In addition, because the anchor pole tail end adopts the nut support supporting plate, the tail end screw thread makes body of rod section strength reduction 25%-28%, causes a lot of anchor poles to break from screw thread, anchor pole is not reached design supporting capacity and cause hidden dangers in project.Simultaneously, be cutting thread, adopt the one-level plain steel-bar more, material use is also unreasonable.
The purpose of this utility model provides a kind of novel fast hydraulic cement anchor pole, and it is easy to make, and simple installation is quick, saves steel, and a kind of connector also is provided simultaneously, and available machinery is installed.
Said novel anchor rod and existing cement grouted bolt difference are: it is additional bar that anchor head partly is welded with bar dowel, and its part outside body of rod end bends to body of rod axis; Be welded with steel washer on the body of rod, steel washer rest rubber ring, the two constitutes the densification slurry check ring; The anchor pole tail end is welded with a steel blocker ring to replace the nut of existing cement grouted bolt, supporting splint.Like this, anchor pole is made into as a whole, need not assemble at the construction field (site).
The purpose of the additional short muscle of weldering is to increase the skid resistance and the anchored force of the body of rod, and front end is bent to form the tip simultaneously, wears out the cement volume after being convenient to advance petrosal foramen.Reasonably design is to be symmetrically welded two additional short muscle, and like this, stressed rationally also being convenient to installed.
The densification slurry check ring is apart from the distance of termination point of anchor rod, and promptly anchoring section length is generally 15-40 centimetre by design decision.If need full length fastening, can establish the slip casting steam vent on the supporting plate, after anchor pole is installed, in good time with conventional cement mortar from this hole injection hole, available thin plastic pipe inserts boring from the slip casting steam vent simultaneously, so that deaeration guarantees that slip casting is closely knit.
In order to make anchor pole have pre-anchoring force, one sebific duct section (about 10 centimeter length) and cement can be rolled into the petrosal foramen bottom during installation, after anchor pole pushes petrosal foramen, wears out the cement volume, promptly enter the sebific duct section.Cooperate with the suitable of bore diameter by body of rod diameter, additional short muscle diameter, sebific duct wall thickness, can make to produce the friction and Extrusion effect between anchor head and hole wall, and make anchor pole after pushing boring, promptly produce certain pre-anchoring force.The application's anchor pole can be installed with hammer drill in addition, the acting in conjunction of densification slurry check ring on the impact shock of hammer drill and the body of rod, and cement mortar can obtain well dashing shake and compacting.The application's anchor pole all is suitable at present used various cement volumes.The cement volume adopts extraordinary fast ebonite knot material, can produce bigger anchored force in the extremely short time.The support effect of supporting plate in addition, country rock can be stablized.
For cement grouted bolt being installed, disclosed herein as well is a kind of mounted connector with hammer drill.It is to be assembled by short drill steel and the reeded trough in two ends.
The advantage and the effect of disclosed anchor pole of the application and mounted connector are:
1. anchor pole is easy to make, only need weld, need forging and machining screw, making nut;
2. simple installation will integrate with former procedures, adopt machinery to install, and save time half, and job safety, particularly need not artificial jacking anchor pole, stirring or tamping mortar, not need on-the-spot cover supporting plate, nutting etc.;
3. saving steel, Supporting plate for anchor change nut and are fixed as the welding baffle ring and fix, and have avoided the artificial weakening of tail end cutting thread to the body of rod, when utilizing reinforcing bar of the same race (existing cement grouted bolt is all used a grade reinforcing steel), are equivalent to save steel nearly 30%.The application's anchor pole can be used two grade reinforcing steels, compares and can save body of rod steel about 50%.
4. the assurance installation quality does not stay hidden dangers in project, alleviates installation labour intensity;
5. both can local anchoring, but also full length fastening.
Fig. 1 is the structural representation of the application's anchor pole;
Fig. 2 has the anchor head of sebific duct section when being installation;
Fig. 3 is the rubber ring and the steel washer of densification slurry check ring;
Fig. 4 is the supporting plate that the slip casting steam vent is arranged;
Fig. 5 is the trough part of mounted connector.
Embodiment: the anchor pole of application (Fig. 1) comprises the body of rod (1), anchor head (2), supporting plate (3), anchor head partly is welded with two bar dowels (4) of symmetry, its front end is abutted against after the bending of body of rod axis, be welded with densification slurry check ring on the body of rod by rubber ring (6) formation of steel washer (5) and rest thereof, its 15-40 centimetre apart from the anchor head end, the anchor pole tail end is welded with steel blocker ring (7) in order to supporting splint (3), slip casting steam vent (8) is arranged on the supporting plate (3), and this supporting plate puts when making anchor pole in advance.
During installation, earlier sebific duct section (9) and fast hydraulic cement are rolled into the petrosal foramen bottom, then anchor pole is inserted the petrosal foramen certain depth and place the upper groove (12) of the connector trough (10) that is fixed on the hammer drill interior its tail end (low groove (11) pin is gone into bit shank).Start hammer drill, anchor head is worn out the cement volume, enters the sebific duct section.Under the acting in conjunction of the pushing vibration of hammer drill and densification slurry check ring, cement mortar is by compacted compacting.This process pushes against scar until supporting plate (3) and stops.In order to guarantee that supporting plate pushes against scar, dark about 3 centimetres of drilling depth requirements than rock-bolt length.Mortar is full of anchoring section and by after the densification, its unnecessary part promptly is extruded around the densification slurry check ring.As the need full length fastening, then in petrosal foramen, inject conventional cement mortar by the slip casting steam vent again.
According to geology and project situation, also can be during installation without sebific duct section (9).
Claims (5)
1, simple type rapid setting cement anchor pole comprises the body of rod (1), anchor head (2), supporting plate (3), it is characterized in that anchor head (2) is welded with additional short muscle (4), and its front end bends to body of rod axis; Be welded with steel washer (5) on the body of rod (1), a rubber ring of this steel washer rest (6), the two constitutes the densification slurry check ring jointly; The anchor pole tail end is welded with steel blocker ring (7) with supporting splint (3); Anchor pole is made into an integral body.
2, according to the said anchor pole of claim 1, it is characterized in that said additional short muscle is two, be symmetrically welded.
3,, it is characterized in that densification slurry check ring 15-40 centimetre apart from the anchor head end according to the said anchor pole of claim 1.
4,, it is characterized in that having on the supporting plate (3) slip casting steam vent (8) according to the said anchor pole of claim 1-3.
5, a kind of connector that the said anchor pole of claim 1 is installed, comprise short drill steel, it is characterized in that a trough (10) in addition, these trough two ends have low groove (11) and upper groove (12) respectively, the bit shank pin is gone into low groove (11), when upper groove (12) supplies to install the anchor pole tail end is inserted wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89209059 CN2047721U (en) | 1989-06-28 | 1989-06-28 | Light anchor bolts of quick-hardening cement and their installment connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89209059 CN2047721U (en) | 1989-06-28 | 1989-06-28 | Light anchor bolts of quick-hardening cement and their installment connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2047721U true CN2047721U (en) | 1989-11-15 |
Family
ID=4865641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89209059 Withdrawn CN2047721U (en) | 1989-06-28 | 1989-06-28 | Light anchor bolts of quick-hardening cement and their installment connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2047721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863696A (en) * | 2016-05-17 | 2016-08-17 | 太原理工大学 | Corrugated anchored rod device high in strength and large in deformation |
| CN111810207A (en) * | 2020-06-17 | 2020-10-23 | 山东大学 | Drilling and anchoring integrated anchoring device and method |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
-
1989
- 1989-06-28 CN CN 89209059 patent/CN2047721U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863696A (en) * | 2016-05-17 | 2016-08-17 | 太原理工大学 | Corrugated anchored rod device high in strength and large in deformation |
| CN111810207A (en) * | 2020-06-17 | 2020-10-23 | 山东大学 | Drilling and anchoring integrated anchoring device and method |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |