CN212803290U - Stock with function of shearing - Google Patents
Stock with function of shearing Download PDFInfo
- Publication number
- CN212803290U CN212803290U CN202021401884.9U CN202021401884U CN212803290U CN 212803290 U CN212803290 U CN 212803290U CN 202021401884 U CN202021401884 U CN 202021401884U CN 212803290 U CN212803290 U CN 212803290U
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- China
- Prior art keywords
- sleeve
- shear
- detachable
- sleeves
- rod body
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- Expired - Fee Related
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Abstract
The utility model discloses an anchor rod with shear resistance function, which mainly comprises a detachable shear resistant sleeve, a rubber filling body, a grout stop plug, an anchoring head, a rod body, a tray and a high-strength nut; the detachable shear sleeve is characterized in that the sleeve wall is provided with a screw hole, the upper end of the sleeve is provided with a groove, the lower end of the sleeve is provided with a connecting plug corresponding to the groove, and the screw hole arranged on the connecting plug is matched with the screw hole on the sleeve wall; the rubber filling body is arranged between the detachable shear sleeve and the rod body; the grout stopping plug is trumpet-shaped and is arranged below the detachable sleeve; the anchoring head is a hollow spiral anchoring head and is connected with the lower end of the rod body through threads, and the surface of the anchoring head is roughened; threads are arranged above and below the rod body, and the rubber filling body is pressed in through interference connection; the tray and the high-strength nut can apply certain pretightening force to the anchor rod. The utility model discloses a thought of yielding of shearing can improve the stock and strut the shear resistance of in-process.
Description
Technical Field
The utility model relates to an anchor rod device that uses in the fault area underground works support field especially relates to an anchor rod with function of shearing.
Background
With the field of mine mining in China entering high-risk zones, geological conditions of coal mine roadways are increasingly severe, and disasters caused by high ground stress, fault zones and surrounding rock disturbance become problems to be solved urgently. The roadway support in China mostly adopts yielding support to ensure that the anchor rod is not broken, but is not suitable for mining areas with surrounding rocks moving transversely, and when the surrounding rocks are deformed transversely greatly, the anchor rod cannot bear large shearing stress and can be cut off, so that the support is invalid, the risk of roadway collapse is brought, and the normal production of coal mines and the personal safety of personnel are affected. Therefore, a shear-resistant anchor rod which can be applied to a region where lateral disturbance occurs to surrounding rock needs to be researched, but most shear-resistant anchor rods still adopt the idea of resistance increase and yielding, and the anchor rod is complex to mount and is not beneficial to underground construction.
For example, the utility model discloses a multisection steel pipe can dislocation formula shear anchor rod of application number CN201320246429.X, it includes a steel strand wires, is provided with tray and fastening nut in the front end department of steel strand wires, overlaps on the most line segment that the steel strand wires are close to its front end has a plurality of sections steel pipes. The shear-resistant anchor rod is anchored in a rock stratum, and when the rock stratum moves to generate shearing action on the anchor rod, a steel pipe on the outer side of the anchor rod deforms and moves in a staggered manner firstly, so that shearing force of a part of rock stratum is consumed, and extrusion and movement of the anchor rod in a high-structure stress area are adapted. But the steel pipe connected mode is simple, can not bear great shearing force, and the steel pipe receives to transmit immediately after shearing the destruction to the body of rod, and is little to shearing deformation influence.
The application number is CN 201720858410.9's novel stock that shears comprises anchor head, anchor section, clip formula ground tackle, steel pipe, steel strand wires, warp and coordinate a section of thick bamboo, backing plate, steel strand wires stretch-draw section of thick bamboo, steel strand wires stiff end ground tackle. The steel pipe is still adopted in this stock anchor section of shearing resisting, is convenient for the stock anchor to the country rock, and steel pipe and the coordinated section of thick bamboo staggered connection of warping can keep the stock wholeness, guarantees that steel pipe and steel strand wires resist shear stress to improve the shear resistance of stock. Because the body part of the anchor rod adopts two forms of a steel pipe and a steel strand, the difficulty in installation and construction is increased, the tensile strength is still increased to increase the shearing resistance of the anchor rod, and the shearing resistance effect is not easy to exert to the maximum in a roadway with large mine pressure and large transverse deformation.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an anchor rod with shear resistant function, which has simple structure, convenient operation and understandable principle.
The utility model relates to an stock with function of shearing, its structure is: the detachable shear resistant sleeve is assembled in multiple groups, one group of sleeves at the uppermost end of the assembled sleeve is not provided with a groove, one group of sleeves at the lowermost end of the assembled sleeve is not provided with a connecting plug, and each group of sleeves is provided with four screw holes and four connecting plugs which are arranged in a cross shape; the rubber filling body is arranged between the rod body and the detachable shear sleeve; the grout stop plug is arranged below the detachable shear sleeve and is horn-shaped; the surface of the anchoring head is roughened, so that the anchoring force can be increased; the tray and the high-strength nut are connected with the upper part of the rod body through threads, and pretightening force can be applied to the anchor rod.
The detachable shear sleeve can be assembled in multiple groups, the uppermost group of sleeves are only provided with four connecting plugs, the lowermost group of sleeves are only provided with four grooves, the sleeve grooves and the connecting plugs at the middle parts are all arranged, and the length of the roadway anchor hole can be adjusted.
The connecting plug is matched with the groove for use, the connecting plug at the lower end of the detachable shear-resistant sleeve at the upper part is inserted into the groove at the upper end of the detachable shear-resistant sleeve at the lower part, and a screw hole arranged on the connecting plug is matched with a screw hole on the sleeve; the screw hole is provided with a nut to lock the sleeve and the connecting plug; the screw holes are provided with threads, so that the tensile property of the detachable shear sleeve is improved.
The rod body is pressed into the rubber filling body through interference connection, the rubber filling body and the rod body part are connected with the detachable shear sleeve through interference connection, and the rubber filling body can disperse shear force transmitted by the detachable shear sleeve, so that the rod body is prevented from being cut.
The anchoring head be cavity form, be equipped with the screw thread that matches with body of rod lower extreme screw thread on the cavity wall.
The utility model relates to a construction method of stock with function of shearing does:
(1) punching holes at specified positions according to the roadway construction requirements;
(2) penetrating a grout stop plug into the rod body from the lower end of the rod body;
(3) assembling the detachable shear sleeve according to the actual punching length, and screwing a nut into a screw hole to be suspended tightly;
(4) connecting the anchoring head with the lower end of the rod body through threads, and pressing the anchoring head into the rubber filling body from the upper part of the rod body through interference connection after connection;
(5) pressing the mounted rubber filling body and the rod body part into the detachable shear sleeve through interference connection;
(6) cleaning the anchor hole, putting a corresponding amount of resin anchoring agent into the anchor hole, putting the rod body and the sleeve part into the hole, starting the stirrer to rotate the rod body, so that the resin anchoring agent is crushed, and the rod body part and the surrounding rock are bonded into a whole;
(7) after the anchoring agent is completely cured, the tray and the high-strength nut are installed at one time, and the high-strength nut is screwed to apply pre-tightening force to the anchor rod.
The utility model relates to an anchor rod with function of shearing resists the shearing force that the country rock was applyed to the anchor rod through dismantling the sleeve that shears, and its advantage is:
(1) the pre-tightening force applied to the surrounding rock is started early, so that the rod body and the surrounding rock form a whole, and the supporting capability of the anchor rod is improved;
(2) the structure is simple and convenient to install, can be freely matched, and can be better suitable for different mining areas;
(3) the addition of the rubber filling body can disperse part of shearing force to protect the rod body;
(4) can dismantle the increase shear capacity that the recess and the connecting plug that set up on the shear sleeve can be fine, the sleeve that can take place again when the shearing force is too big destroys and is unlikely to the body of rod of reaching.
Drawings
Fig. 1 is an overall cross-sectional view of an anchor rod with a shear-resisting function according to the present invention.
Fig. 2 is the three-dimensional schematic diagram of the detachable shear sleeve of the present invention.
Fig. 3 is the utility model discloses the three-dimensional schematic diagram of shear sleeve can be dismantled to the top.
Fig. 4 is the three-dimensional schematic diagram of the shear sleeve can be dismantled to the lowermost end of the utility model.
Figure 5 is the utility model discloses can dismantle shear sleeve cross-sectional view.
Illustration of the drawings: 1-high-strength nut; 2-a tray; 3-a rubber filler; 4-a rod body; 5-a detachable shear sleeve; 51-a connection plug; 52-screw hole; 53-grooves; 6-stop the thick liquid stopper; 7-an anchoring head; 8-a resin anchoring agent; 9-surrounding rock.
Detailed Description
As shown in fig. 1-5, the utility model relates to an anchor rod with shear-resistant function, which mainly comprises a detachable shear-resistant sleeve 5, a rubber filling body 3, a grout stop plug 6, an anchoring head 7, a rod body 4, a tray 2 and a high-strength nut 1, and is characterized in that the detachable shear-resistant sleeve 5 can be assembled in multiple groups, one group of sleeves at the top end of the assembled sleeve are not provided with a groove 53, one group of sleeves at the bottom end are not provided with a connecting plug 51, and each group of sleeves are provided with four screw holes 52 and four connecting plugs 51 which are arranged in a cross shape; the rubber filling body 3 is arranged between the rod body 4 and the detachable shear sleeve 5; the grout stop plug 6 is arranged below the detachable shear sleeve 5 and is horn-shaped; the surface of the anchoring head 7 is roughened, so that the anchoring force can be increased; the tray 2 and the high-strength nut 1 are in threaded connection with the upper part of the rod body 4, and pretightening force can be applied to the anchor rod.
The detachable shear sleeve 5 can be assembled in multiple groups, the uppermost group of sleeves are only provided with four connecting plugs 51, the lowermost group of sleeves are only provided with four grooves 53, the middle sleeve grooves 53 and the connecting plugs 51 are arranged, and the adjustment can be carried out according to the length of the roadway anchor hole.
The connecting plug 51 is matched with the groove 53 for use, the connecting plug 51 at the lower end of the detachable shear sleeve 5 at the upper part is inserted into the groove 53 at the upper end of the shear sleeve at the lower part, and the screw hole 52 arranged on the connecting plug 51 is matched with the screw hole 52 on the sleeve; the screw hole 52 is provided with a nut to lock the sleeve and the connecting plug 51; the screw holes 52 are provided with threads, so that the tensile property of the detachable shear sleeve 5 is improved.
The rod body 4 is pressed into the rubber filling body 3 through interference connection, the rubber filling body 3 and the rod body 4 are connected with the detachable shear sleeve 5 through interference connection, and the rubber filling body 3 can disperse shearing force transmitted by the detachable shear sleeve 5, so that the rod body 4 is prevented from being cut.
The anchoring head 7 is hollow, and the hollow wall is provided with threads matched with the threads at the lower end of the rod body.
The utility model relates to a construction method of stock with function of shearing does:
(1) punching holes at specified positions according to the roadway construction requirements;
(2) the grout stop plug 6 is inserted into the rod body from the lower end of the rod body 4;
(3) assembling the detachable shear sleeve 5 according to the actual punching length, and screwing a nut into the screw hole 52 for tightly suspending;
(4) connecting the anchoring head 7 with the lower end of the rod body 4 through threads, and pressing the rod body into the rubber filling body 3 through interference connection from the upper part of the rod body after connection;
(5) pressing the mounted rubber filling body 3 and the mounted rod body 4 into the detachable shear sleeve 5 through interference connection;
(6) cleaning the anchor hole, putting a corresponding amount of resin anchoring agent 8, putting the rod body 4 and the sleeve part into the hole, starting the stirrer to rotate the rod body, so that the resin anchoring agent 8 is crushed, and the rod body part and the surrounding rock are bonded into a whole;
(7) after the resin anchoring agent 8 is completely cured, the tray 2 and the high-strength nut 1 are installed at one time, and the high-strength nut 1 is screwed down to apply pre-tightening force to the anchor rod.
Claims (5)
1. An anchor rod with a shear-resistant function is composed of detachable shear-resistant sleeves, a rubber filling body, a grout stop plug, an anchoring head, a rod body, a tray and a high-strength nut, and is characterized in that the detachable shear-resistant sleeves can be assembled in multiple groups, one group of sleeves at the uppermost end of the assembled sleeves are not provided with grooves, one group of sleeves at the lowermost end of the assembled sleeves are not provided with connecting plugs, and each group of sleeves is provided with four screw holes and four connecting plugs which are arranged in a cross shape; the rubber filling body is arranged between the rod body and the detachable shear sleeve; the grout stop plug is arranged below the detachable shear sleeve and is horn-shaped; roughening the surface of the anchoring head to form a rough surface; the tray and the high-strength nut are connected with the upper part of the rod body through threads.
2. An anchor rod with a shear resisting function as claimed in claim 1, wherein the detachable shear sleeves can be assembled in multiple groups, the uppermost sleeve group is provided with only four connecting plugs, the lowermost sleeve group is provided with only four grooves, and the sleeve groove and the connecting plugs in the middle are arranged.
3. An anchor rod with a shear resisting function as claimed in claim 1, wherein the connecting plug is used in cooperation with a recess, the connecting plug at the lower end of the upper detachable shear sleeve is inserted into the recess at the upper end of the lower detachable shear sleeve, and a screw hole formed in the connecting plug is matched with a screw hole formed in the sleeve; the screw hole is provided with a nut to lock the sleeve and the connecting plug; and the screw holes are provided with threads.
4. A shear resistant bolt according to claim 1 wherein the shank is pressed into the rubber matrix by interference fit, the rubber matrix and the shank portion being connected by interference fit to a removable compression sleeve.
5. A shear resistant anchor as claimed in claim 1, wherein the anchoring head is hollow and the hollow wall is provided with a thread matching the thread of the lower end of the shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401884.9U CN212803290U (en) | 2020-07-16 | 2020-07-16 | Stock with function of shearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401884.9U CN212803290U (en) | 2020-07-16 | 2020-07-16 | Stock with function of shearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212803290U true CN212803290U (en) | 2021-03-26 |
Family
ID=75102775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021401884.9U Expired - Fee Related CN212803290U (en) | 2020-07-16 | 2020-07-16 | Stock with function of shearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212803290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389581A (en) * | 2021-08-04 | 2021-09-14 | 西安科技大学 | A but, extension stock that is used for coal mine tunnel to have shear function |
-
2020
- 2020-07-16 CN CN202021401884.9U patent/CN212803290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389581A (en) * | 2021-08-04 | 2021-09-14 | 西安科技大学 | A but, extension stock that is used for coal mine tunnel to have shear function |
| CN113389581B (en) * | 2021-08-04 | 2023-06-27 | 西安科技大学 | Extension anchor rod with shearing resistance for coal mine tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210326 Termination date: 20210716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |