CN214464300U - Complete anchor rod supporting device for coal mine underground roadway - Google Patents
Complete anchor rod supporting device for coal mine underground roadway Download PDFInfo
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- CN214464300U CN214464300U CN202120518605.5U CN202120518605U CN214464300U CN 214464300 U CN214464300 U CN 214464300U CN 202120518605 U CN202120518605 U CN 202120518605U CN 214464300 U CN214464300 U CN 214464300U
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Abstract
The utility model relates to a colliery is stock support integrated equipment for underworkings belongs to mine tunnel country rock support technical field. The utility model discloses a device includes the body of rod, pole head, fastening section, butterfly tray, contact gasket, prestressing force nut and lock nut to can realize the easy to assemble of stock, the abundant enhancement of stock pretightning force, make loose apical plate and coal seam obtain the comprehensive restraint of stock support integrated equipment, can guarantee the stability of colliery underworkings country rock.
Description
Technical Field
The utility model belongs to the technical field of mine tunnel country rock is strutted, concretely relates to colliery is stock support complete set device for underworkings.
Background
With the increasing of the coal mining depth, deep rock masses are in a complex environment of three-high one disturbance, especially after a tunnel is excavated, the original stress state of the rock masses is destroyed, stress redistribution is caused, the rock masses on the top bottom plate and the tunnel two sides deform and move towards the direction of the tunnel sky, and then a nonlinear large deformation dynamic phenomenon occurs, so that the tunnel surrounding rock deformation presents soft rock characteristics. Therefore, reasonable coal mine roadway mining support design is an effective means for preventing the roadway from engineering disasters in the mining stage. The anchor bolt support can strengthen the surrounding rock strength of the roadway, obviously improve the stability of the surrounding rock, and has the advantages of reducing the support cost, increasing the roadway forming speed, lightening the labor intensity, improving the utilization rate of the roadway section, simplifying the stope face end maintenance process, obviously improving the operation environment and the safe production conditions and the like, thereby effectively ensuring the safe production of the mine, so the anchor bolt support becomes the preferred, safe and efficient main support mode of the coal mine roadway in China.
The bolting technology is developed and innovated in the southwest area of China for years, but the existing bolting scheme can not meet the requirement of bolting quality due to the complex conditions of coal seam occurrence and the increase of mining depth. However, the change of surrounding rock characteristics causes the failure of the original roadway supporting process and technology, the phenomena of roof collapse, separation, rib spalling, bottom heaving and the like frequently exist after the roadway is supported, the repeated repair and reinforcement are needed, the maintenance workload is large, the maintenance cost is high, the construction operation is unsafe, the normal production of a mine is seriously influenced, and the safe and efficient mining of a coal mine is restricted by the roadway surrounding rock supporting problem.
Therefore, even though the existing bolting technology has good economic benefits, the problems of the bolting in the coal roadway support are still obvious. In order to ensure normal and safe production of mines, the roadway surrounding rock supporting material is optimized in time so as to meet the requirement of surrounding rock stability.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a colliery is stock support complete sets for underworkings.
In order to achieve the above purpose, the utility model provides a following technical scheme:
1. a complete set of anchor rod supporting device for a coal mine underground roadway comprises a rod body 1, a butterfly-shaped tray 4, a contact gasket 5, a prestress gasket 6, a prestress nut 7 and a locking nut 8;
the top of the rod body 1 is provided with a rod head 2, and the tail of the rod body 1 is provided with a fastening section 3;
the fastening section 3 is sequentially connected with the butterfly-shaped tray 4, the contact gasket 5, the prestress gasket 6, the prestress nut 7 and the locking nut 8 from top to bottom.
Preferably, the rod body 1 is of a left-handed structure, the whole length of the rod body is provided with rolled continuous threads, and the whole length of the rod body 1 is equal in strength.
Preferably, the head 2 has an inverted triangular pyramid structure.
Preferably, the fastening section 3 is of a fine thread structure.
Preferably, the contact pad 5 is made of metal.
More preferably, the metal is carbon steel Q235.
Preferably, the material of the pre-stressed gasket 6 is rubber.
Preferably, the pre-stressed nut 7 is of a square structure.
Preferably, the lock nut 8 is of a ball head structure.
The beneficial effects of the utility model reside in that:
the utility model discloses a complete set of bolting device for coal mine underworkings, which comprises a rod body, a rod head arranged at the top of the rod body, a fastening section arranged at the tail of the rod body, a butterfly-shaped tray, a contact gasket, a pre-stress nut and a locking nut, wherein in the construction process of the underworkings of the coal mine, the hole position of an anchor rod is determined according to the design requirement, a drilling tool is used for drilling, rock powder in the hole is blown off by compressed air, the anchoring agent is sent to the bottom of the hole, the rod head of the anchor rod body is propped against the anchor rod to start stirring, the stirring tool is dismounted after the stirring is finished, after the waiting time is reached, a stirring connector is dismounted, the butterfly-shaped tray is mounted at the fastening section, the contact gasket, the pre-stress gasket and the pre-stress nut are screwed by a special spanner, the locking nut is finally mounted at the fastening section, the anchor rod is prevented from loosening, thereby realizing the convenient mounting of the anchor rod and the full enhancement of the pre-tightening force of the anchor rod, the loose top and bottom plates and the coal bed are comprehensively restrained by the complete anchor rod supporting device, and the stability of the surrounding rock of the underground roadway of the coal mine can be ensured.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a structural diagram of a complete bolting device for a coal mine underground roadway according to the utility model;
wherein, 1 is the body of rod, 2 is the pole head, 3 is fastening section, 4 is butterfly tray, 5 is the contact pad piece, 6 is prestressing force gasket, 7 is prestressing force nut and 8 is lock nut.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the following embodiments, features in the embodiments may be combined with each other without conflict.
Example 1
A complete set of anchor rod supporting devices (shown in figure 1) for coal mine underground roadways comprises a rod body 1, a rod head 2, a fastening section 3, a butterfly-shaped tray 4, a contact gasket 5, a prestress gasket 6, a prestress nut 7 and a locking nut 8; the top of the rod body 1 is provided with a rod head 2, and the tail part is provided with a fastening section 3; the fastening section 3 is connected with the butterfly-shaped tray 4, the contact gasket 5, the prestress gasket 6, the prestress nut 7 and the locking nut 8 in sequence.
The rod body 1 adopts a left-handed structure, the whole length of the rod body is provided with rolled continuous threads, and the whole length has equal strength. The rod body 1 is made of BHRB400, the diameter of the BHRB400 is 22mm, the yield load reaches 130-145 kN, and the extension amount reaches 360-370 mm.
The setting presents the three pyramid-shaped structure of falling at the head 2 at the 1 top of the body of rod to be favorable to the stock can get into in the drilling smoothly.
The fastening section 3 arranged at the tail part of the rod body 1 adopts a fine thread structure, and the friction force generated by the close contact with the prestress nut 7 generates prestress on the rod body 1 and the rod head 2.
The contact gasket 5 is made of metal (such as carbon steel Q235), so that the protruding part of the butterfly-shaped tray 4 is stably contacted with the prestress gasket 6 through the contact gasket 5, and meanwhile, the prestress gasket 6 is made of rubber, so that prestress generated by the prestress nut 7 can be effectively transmitted.
The prestressed nut 7 is of a square structure, a special wrench is used for applying prestress, and the locking nut 8 is of a ball head-shaped structure, so that the stability of the anchor rod supporting complete device after prestress is applied can be ensured, and looseness does not occur.
To sum up, the utility model discloses a complete set of bolting device for coal mine underworkings, which comprises a rod body, a rod head, a fastening section, a butterfly-shaped tray, a contact gasket, a prestressed nut and a locking nut, wherein in the construction process of the coal mine underworkings, the hole position of the anchor rod is determined according to the design requirement, a drilling tool is used for drilling, rock powder in the hole is blown off by compressed air, an anchoring agent is sent to the bottom of the hole, the rod head of the anchor rod body is used for propping against the hole to start stirring, the stirring is finished, a stirring machine is dismounted, after the waiting time is reached, a stirring connector is dismounted, the butterfly-shaped tray, the contact gasket, the prestressed gasket and the prestressed nut are mounted on the fastening section, the prestressed nut is screwed by a special spanner, the locking nut is mounted on the fastening section at last, the anchor rod is prevented from loosening, thereby realizing convenient mounting of the anchor rod and full enhancement of the pretightening force, leading a loose top bottom plate and obtaining the comprehensive restraint of the complete set of the bolting device, can ensure the stability of the surrounding rock of the underground roadway of the coal mine.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. A complete set of anchor rod supporting devices for coal mine underground roadways is characterized by comprising a rod body (1), a butterfly-shaped tray (4), a contact gasket (5), a prestressed gasket (6), a prestressed nut (7) and a locking nut (8);
the top of the rod body (1) is provided with a rod head (2), and the tail of the rod body (1) is provided with a fastening section (3);
the fastening section (3) is sequentially connected with the butterfly-shaped tray (4), the contact gasket (5), the prestress gasket (6), the prestress nut (7) and the locking nut (8) from top to bottom.
2. The device according to claim 1, characterized in that the rod body (1) is of a left-handed construction and has a continuous thread rolled over its entire length, the rod body (1) being equally strong over its entire length.
3. The device according to claim 1, characterized in that the head (2) presents an inverted triangular pyramid-shaped structure.
4. Device according to claim 1, characterized in that the fastening section (3) is of a fine-thread construction.
5. Device according to claim 1, characterized in that the material of the contact pads (5) is metal.
6. The apparatus of claim 5, wherein the metal is carbon steel Q235.
7. Device according to claim 1, characterized in that the pre-stressing gasket (6) is made of rubber.
8. Device according to claim 1, characterized in that the pre-stressing nut (7) is of square construction.
9. Device according to claim 1, characterized in that the locking nut (8) is of a ball-head configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518605.5U CN214464300U (en) | 2021-03-11 | 2021-03-11 | Complete anchor rod supporting device for coal mine underground roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518605.5U CN214464300U (en) | 2021-03-11 | 2021-03-11 | Complete anchor rod supporting device for coal mine underground roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464300U true CN214464300U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120518605.5U Active CN214464300U (en) | 2021-03-11 | 2021-03-11 | Complete anchor rod supporting device for coal mine underground roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464300U (en) |
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2021
- 2021-03-11 CN CN202120518605.5U patent/CN214464300U/en active Active
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