CN2704616Y - Implosive instant self-locking prestressing roofbolt - Google Patents
Implosive instant self-locking prestressing roofbolt Download PDFInfo
- Publication number
- CN2704616Y CN2704616Y CN 200420018117 CN200420018117U CN2704616Y CN 2704616 Y CN2704616 Y CN 2704616Y CN 200420018117 CN200420018117 CN 200420018117 CN 200420018117 U CN200420018117 U CN 200420018117U CN 2704616 Y CN2704616 Y CN 2704616Y
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- CN
- China
- Prior art keywords
- anchor
- explosive
- anchor rod
- locking
- implosive
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- Expired - Fee Related
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Abstract
The implosive instant self-locking prestressing anchor rod of the utility model relates to an anchor rod used for a rock basic support item in various engineering structures. The anchor end of the anchor rod body is connected with a fixed tapered end on the top; the shape of an expanding slide outer cover is a circular hollow cylinder, and the upper part of the expanding slide outer cover is provided with a four-equal segment groove; the inside wall of the circular hollow cylinder presents a taper small on the top and big at the bottom; the lower end of the expanding slide outer cover is connected and provided with a bulkhead at the bottom; the fixed tapered end on the top close to the outer end is provided with a circular pinhole passing through the detonating cord of the explosive; during operation, the anchor rod body which is provided with the implosive explosive, the expanding slide outer cover, etc. is inserted into the bottom of an anchor hole so as to detonate an explosive roll; the anchor rod body rapidly slips upward under the action of the impact force the explosive and is firmly locked inside the anchor hole through the action of the wedge tight force of the sliding tapered locking surface. The utility model has the advantages of simple structure, reliable self-locking performance, rapid locking, convenient anchoring construction, and small quantity of explosive consumption; the end anchoring of the anchor rod can be realized by transmitting the bolt locking force into the bottom of the anchor hole.
Description
Technical field the utility model relates to a kind of anchor pole that is used for all kinds of engineering structures rock foundation supporting projects, relates in particular to the instantaneous self-locking prestressed anchor of a kind of implosive.
Background technology usually will be used the middle long anchor pole about length 6-10 rice in the work progress of a lot of hydraulic engineerings and tunnel engineering project, be used for some more weak basement rock or instable slope are carried out supporting.Often be called the temporary lining anchor pole on the engineering.The Engineering anchor rod that is usually used in this purpose at present mainly contains following several form:
1, the mortar anchor pole it utilize the ordinary Portland cement mortar that anchor pole and hole wall are connected as a single entity, make anchor pole produce anchored force and shearing resistance longitudinally, the size of vertical anchored force depends primarily on the size as the adhesion of the cement mortar of binding material, and shear strength is determined by the shear strength of anchor pole material.Shortcoming such as it has length time of setting, cement injection mortar construction technology complexity, vertical anchored force can not be delivered at the bottom of the hole makes the application of this type of anchor pole be subjected to great restriction, and can not be used as quick prestressed anchor at all.
2, this type of anchor pole of powder stick anchor pole is divided into organic powder stick anchor pole and inorganic powder stick anchor pole, is about to organic gel or inorganic glue and makes roll, is called powder stick.During use powder stick and reinforced anchor bolt are inserted in the anchor hole simultaneously, utilize the cementation of powder stick that anchor pole is fixed.The construction technique complexity of powder stick anchor pole, the same with the mortar anchor pole, the powder stick anchor pole can not be used as quick prestressed anchor.
3, the metal expansion type rock bolt is pressed into the longitudinal opening cylindrical shell with steel sheet, and less than the external diameter of anchor pole, external diameter is slightly less than the diameter of anchor hole inwall to the internal diameter of cylindrical shell slightly, utilizes the expansion of cylindrical shell that anchor pole is fixed during anchoring.The anchored force of this type of anchor pole depends on the frictional force between cylindrical shell and anchor pole outer wall and the anchor hole inwall.Because cylindrical shell is that outer power is squeezed in the hole by force, its length is restricted, so this type of anchor pole can not be used as quick prestressed anchor.
The summary of the invention the purpose of this utility model just be to overcome long construction technology time of setting of existing water conservancy project anchor pole complicated and vertical anchored force can not be delivered to the hole at the bottom of, can not be as deficiencies such as quick prestressed anchors, and a kind of easy to use, fast self-locking is provided, vertical anchored force can be delivered to the instantaneous self-locking prestressed anchor of implosive at the bottom of the hole.
The implementation of the purpose of this utility model is, the instantaneous self-locking prestressed anchor of implosive, the anchored end of anchor rod body 1 and the tapered pin in top 4 is connected, expansion slippage overcoat 3 profiles are a circular hollow cylinder, its top has the quarter groove, groove is up-small and down-big taper, and expansion 3 times bottoms of slippage overcoat and bottom be 5 spiral marking connections silently, and locatees with alignment pin.The tapered pin in top 4 profile are a up-small and down-big tapered cylinder, have a circular aperture that the exploding wire of explosive is passed near the position of outer end.The tapered pin in top 4, expansion slippage overcoat 3 and bottom silently form a cylindrical enclosed cavity 2 of placing explosive between 5.
The utility model is simple in structure, self-locking property is reliable, fast locking, anchoring construction are convenient, little with explosive charge, anchored force can be delivered to anchor hole the bottom, realize in long anchor pole end anchorage, dependable performance.
Description of drawings
Fig. 1 the utility model overall structure schematic diagram
Fig. 2 anchor pole is blown state diagram
Fig. 3 expands slippage jacket structure schematic diagram
Fig. 4 top tapered pin header structure schematic diagram
Fig. 5 bottom is structural representation silently
The specific embodiment is with reference to Fig. 1,3,4,5, and anchor rod body 1 is general building iron, it anchored end and the tapered pin in top 4 between be connected with welding or engage thread.Expansion slippage overcoat 3 profiles are a circular hollow cylinder, and its top has quarter groove 8, and groove is up-small and down-big taper, and expansion 3 times bottoms of slippage overcoat and bottom be 5 spiral marking connections silently, and locate with alignment pin.The tapered pin in top 4 profile are a up-small and down-big tapered cylinder, and its middle part has and do not penetrate screwed hole or circular port 6, is used for the connection with anchor rod body 1.Have a circular aperture 7 that passes the explosive initiation line near the position of outer end.After anchor pole installed, the tapered pin in its top 4, expansion slippage overcoat 3 and bottom silently formed a cylindrical enclosed cavity 2 between 5, in order to place explosive.Because cavity seals and is made up of body of rod body member, makes explosive force be equivalent to internal force, its effect is given full play to.
The utility model course of work is as follows: will expand slippage overcoat 3 and be enclosed within outside the anchor rod body 1, the tapered pin in top 4 is connected as a single entity with anchor rod body 1, the implosion explosive is put into cylindrical enclosed cavity 2, and exploding wire passed from the small sircle hole of the tapered pin in top 4, again the bottom is silently made the cavity sealing in 5 bottoms that screw in expansion slippage overcoats 3.Then the anchor rod body that assembles is inserted the bottom of anchor hole, ignite powder stick, under the effect of explosive impact force, with 4 anchor rod body that the is connected as a single entity 1 upwards slippage fast of the tapered pin in top, because between tapered pin in top 4 and the expansion slippage overcoat 3 is the tapered locking face that slides, anchor pole is promptly by firm being locked in the anchor hole under the effect of wedging power like this, and its shape as shown in Figure 2.
Claims (1)
1, the instantaneous self-locking prestressed anchor of implosive, the anchored end that it is characterized in that anchor rod body (1) is connected with the tapered pin head in top (4), expansion slippage overcoat (3) profile is a circular hollow cylinder, its top has the quarter groove, the inwall of hollow cylinder is up-small and down-big taper, following bottom of expansion slippage overcoat (3) and bottom be (5) spiral marking connection silently, and locate with alignment pin, the tapered pin head in top (4) profile is a up-small and down-big tapered cylinder, have a circular aperture that the exploding wire of explosive is passed, the tapered pin head in top (4) near the position of outer end, expansion slippage overcoat (3) and bottom silently form a cylindrical enclosed cavity (2) of placing explosive between (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420018117 CN2704616Y (en) | 2004-05-18 | 2004-05-18 | Implosive instant self-locking prestressing roofbolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420018117 CN2704616Y (en) | 2004-05-18 | 2004-05-18 | Implosive instant self-locking prestressing roofbolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2704616Y true CN2704616Y (en) | 2005-06-15 |
Family
ID=34769332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420018117 Expired - Fee Related CN2704616Y (en) | 2004-05-18 | 2004-05-18 | Implosive instant self-locking prestressing roofbolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2704616Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470288A (en) * | 2013-09-02 | 2013-12-25 | 山西潞安环保能源开发股份有限公司 | Anchoring split adjustable anchor rod filled in explosion expanded cavity |
| CN103572773A (en) * | 2013-11-19 | 2014-02-12 | 中国电力科学研究院 | Pre-tensioning self-locking mechanism, rock bolt foundation and construction method thereof |
| CN115387335A (en) * | 2022-07-18 | 2022-11-25 | 深圳钜联锚杆技术有限公司 | Instant anchoring self-locking cone, instant anchoring anchor rod and construction method |
-
2004
- 2004-05-18 CN CN 200420018117 patent/CN2704616Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470288A (en) * | 2013-09-02 | 2013-12-25 | 山西潞安环保能源开发股份有限公司 | Anchoring split adjustable anchor rod filled in explosion expanded cavity |
| CN103572773A (en) * | 2013-11-19 | 2014-02-12 | 中国电力科学研究院 | Pre-tensioning self-locking mechanism, rock bolt foundation and construction method thereof |
| CN115387335A (en) * | 2022-07-18 | 2022-11-25 | 深圳钜联锚杆技术有限公司 | Instant anchoring self-locking cone, instant anchoring anchor rod and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050615 Termination date: 20120518 |