CN211819456U - Glass fiber reinforced plastic anchor rod capable of stopping - Google Patents
Glass fiber reinforced plastic anchor rod capable of stopping Download PDFInfo
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- CN211819456U CN211819456U CN201922269511.4U CN201922269511U CN211819456U CN 211819456 U CN211819456 U CN 211819456U CN 201922269511 U CN201922269511 U CN 201922269511U CN 211819456 U CN211819456 U CN 211819456U
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- fiber reinforced
- reinforced plastic
- glass steel
- rod
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Abstract
The utility model discloses a glass steel stock that can stopping adopts the glass steel body of rod, and the pole front end of the glass steel body of rod is the anchor section, and there is the layer board pole afterbody to have and realize the nut of pretension with glass steel body of rod screw-thread fit before the terminal surface support in layer board, characterized by: and a metal sleeve is fixedly arranged at the tail end of the glass fiber reinforced plastic rod body, and the metal sleeve is used for carrying out axial limiting on the nut so as to realize the stopping of the nut. The utility model discloses effectively restrict the axial displacement of the nut of glass steel stock for the coal wall is kept hugging closely to the layer board, has improved glass steel stock bearing capacity.
Description
Technical Field
The utility model relates to a glass steel stock, especially use the glass steel stock in the colliery roadway is strutted.
Background
The traditional metal anchor rod is used for supporting a coal mining roadway, when a coal mining machine cuts a coal wall and meets the metal anchor rod, a roller and a cutting tooth of the coal mining machine are easily damaged, and sparks are generated when the metal anchor rod is cut, so that explosion accidents of gas and coal dust can be caused; the method is characterized in that a screw-thread steel anchor rod is manually removed in advance, the working procedure is increased, the recovery speed of the coal face is limited, and the metal nut and the supporting plate are manually removed in advance, so that the coal wall is in a non-support state, and the stability of coal wall support is not facilitated. The coal mining side adopts the glass fiber reinforced plastic anchor rod support, so that the anchor rod does not need to be removed in advance, the labor intensity of workers is reduced, the propelling speed of a working surface is improved, the yield of a single working surface is improved, and when a coal mining machine cuts coal, sparks are not generated, and the safety of a stope is ensured. Therefore, the coal mining side adopts the glass fiber reinforced plastic anchor rod to replace a metal anchor rod, which is an important means for safe and efficient mechanical mining.
When the coal mining slope is supported by the glass fiber reinforced plastic anchor rod, the phenomenon of anchor withdrawing and wire withdrawing is easy to occur due to the limited thread strength of the glass fiber reinforced plastic anchor rod, and the pretightening force is reduced directly due to the anchor withdrawing and wire withdrawing, so that the supporting strength of the glass fiber reinforced plastic anchor rod is greatly reduced, slope caving is easy to occur, and safety management of the coal slope is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a for avoiding above-mentioned prior art not enough that exists, provide a glass steel stock that can stopping to the axial displacement of the nut of restriction glass steel stock makes the layer board hug closely the coal wall, has improved glass steel stock bearing capacity.
The utility model discloses a solve technical problem and adopt following technical scheme:
the utility model discloses glass steel anchor rod that can backstop, glass steel anchor rod adopts the glass steel body of rod, the pole anterior segment of the glass steel body of rod is the anchor section, there is the layer board pole afterbody to have the nut that realizes the pretension with glass steel body screw-thread fit before the terminal surface supports the layer board; the utility model has the structural characteristics that: and a metal sleeve is fixedly arranged at the end tail part of the glass fiber reinforced plastic rod body, so that the metal sleeve is axially limited aiming at the nut, and the stopping of the nut is realized.
The utility model discloses but glass steel stock's of stopping structural feature also lies in: the length of the metal sleeve is set to be 400mm, and the rod tail end of the glass fiber reinforced plastic rod body protrudes in the pipe section of the metal sleeve.
The utility model discloses but glass steel stock's of stopping structural feature also lies in: the inner diameter of the metal sleeve is larger than the outer diameter of the glass fiber reinforced plastic rod body, and the metal sleeve is pressed on the glass fiber reinforced plastic rod body by utilizing the deformable toughness of a metal material and forms an integrated structure with the glass fiber reinforced plastic rod body.
Compared with the prior art, the utility model discloses beneficial effect embodies:
1. the utility model is characterized in that a metal sleeve is fixedly arranged at the tail part of the glass fiber reinforced plastic anchor rod, and the metal sleeve can be pressed and formed at one time when the glass fiber reinforced plastic anchor rod leaves a factory to form a bulge which is similar to the limiting action of steel upsetting;
2. the metal sleeve and the glass fiber reinforced plastic rod body form an integrated structure, so that the overall strength of the component is improved;
3. the utility model discloses simple structure, cost of manufacture are low, convenient to use, practicality are strong, under the prerequisite that does not change the work progress and do not influence the efficiency of construction, the effectual glass steel stock bearing capacity that has improved, have gained good effect of strutting.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2a is a schematic view of a front view structure of a metal sleeve of the present invention;
FIG. 2b is a schematic side view of the metal sleeve according to the present invention;
reference numbers in the figures: 1, a metal sleeve, 2 nuts, 3 supporting plates and 4 glass fiber reinforced plastic rod bodies;
Detailed Description
Referring to fig. 1, 2a and 2b, in the embodiment of the glass fiber reinforced plastic anchor rod capable of stopping back, a glass fiber reinforced plastic rod body 4 is adopted, the rod front section of the glass fiber reinforced plastic rod body 4 is a resin cartridge anchoring section, a supporting plate 3 is arranged at the rod tail part, a thickened plastic supporting plate is adopted, a nut 2 which is in threaded fit with the glass fiber reinforced plastic rod body 4 to realize pre-tightening is abutted against the supporting plate 3 from the front end surface, a metal sleeve 1 is fixedly arranged at the end tail part of the glass fiber reinforced plastic rod body 4, and the metal sleeve 1 is used for carrying out axial limiting on the nut 2 so as to realize the stopping back of the.
In this embodiment, the length of the metal sleeve 1 is set to 400mm, and the rod tail end of the glass fiber reinforced plastic rod body 4 protrudes in the pipe section of the metal sleeve 1. In order to facilitate sleeving and pressing, the inner diameter of the metal sleeve 1 is slightly larger than the outer diameter of the glass fiber reinforced plastic rod body 4, the metal sleeve 1 is pressed on the glass fiber reinforced plastic rod body 4 by utilizing the deformable toughness of a metal material, and forms an integrated structure with the glass fiber reinforced plastic rod body 4 so as to ensure that the metal sleeve 1 is tightly and fixedly installed on the glass fiber reinforced plastic rod body 4.
Before the glass fiber reinforced plastic anchor rod is installed, firstly, a nut 2 and a supporting plate 3 are sequentially sleeved on a glass fiber reinforced plastic rod body 4, a glass fiber reinforced plastic rod body with a metal sleeve 1 is utilized to push a resin cartridge serving as an anchoring agent to the bottom of a hole of the glass fiber reinforced plastic anchor rod, the resin cartridge is stirred, and after stirring is finished and waiting for a period of time, the nut 2 is screwed down to apply pretightening force. At the moment, the nut 2 and the supporting plate 3 act together to form initial pretightening force to be tightly attached to the side face of the coal wall.
Due to the application of the pretightening force, a clearance of about 10mm is formed between the nut 2 and the metal sleeve 1. After the underground coal seam roadway is excavated, original initial stress is released to cause roadway surrounding rocks to deform in the whole roadway period, and the deformation value of the roadway surrounding rocks usually reaches more than 50mm, so that a 10mm gap between the nut 2 and the metal sleeve 1 is slowly reduced in the original initial stress releasing process until the metal sleeve 1, the nut 2 and the supporting plate 3 are tightly attached together; the metal sleeve which forms an integrated structure with the glass fiber reinforced plastic rod body enables the axial positions of the nut 2 and the supporting plate 3 to be fixed, effectively prevents the nut from retreating, improves the bearing capacity of the glass fiber reinforced plastic anchor rod, and improves the anchoring effect of the glass fiber reinforced plastic anchor rod.
Claims (3)
1. The utility model provides a but glass steel stock of stopping, glass steel stock adopts the glass steel body of rod (4), the pole anterior segment of the glass steel body of rod (4) is the anchor section, the anchor section is by the anchoring agent anchor at glass steel stock hole bottom, and there is layer board (3) pole tail to the terminal surface supports in layer board (3) before nut (2) that realize the pretension with the glass steel body of rod (4) screw-thread fit, characterized by: a metal sleeve (1) is fixedly installed at the end tail part of the glass fiber reinforced plastic rod body (4), so that the metal sleeve (1) is axially limited aiming at the nut (2), and the stopping of the nut (2) is realized.
2. A backstop glass steel anchor rod as claimed in claim 1, wherein: the length of the metal sleeve (1) is set to be 400mm, and the rod tail end of the glass fiber reinforced plastic rod body (4) protrudes in the pipe section of the metal sleeve (1).
3. A backstop glass steel anchor rod according to claim 1 or 2, characterized in that: the inner diameter of the metal sleeve (1) is larger than the outer diameter of the glass fiber reinforced plastic rod body (4), and the metal sleeve (1) is pressed on the glass fiber reinforced plastic rod body (4) by utilizing the deformable toughness of a metal material and forms an integrated structure with the glass fiber reinforced plastic rod body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922269511.4U CN211819456U (en) | 2019-12-17 | 2019-12-17 | Glass fiber reinforced plastic anchor rod capable of stopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922269511.4U CN211819456U (en) | 2019-12-17 | 2019-12-17 | Glass fiber reinforced plastic anchor rod capable of stopping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819456U true CN211819456U (en) | 2020-10-30 |
Family
ID=73140370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922269511.4U Active CN211819456U (en) | 2019-12-17 | 2019-12-17 | Glass fiber reinforced plastic anchor rod capable of stopping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819456U (en) |
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2019
- 2019-12-17 CN CN201922269511.4U patent/CN211819456U/en active Active
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