CN214464296U - Composite telescopic anchor rod for soft rock roadway support - Google Patents
Composite telescopic anchor rod for soft rock roadway support Download PDFInfo
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- CN214464296U CN214464296U CN202023277365.9U CN202023277365U CN214464296U CN 214464296 U CN214464296 U CN 214464296U CN 202023277365 U CN202023277365 U CN 202023277365U CN 214464296 U CN214464296 U CN 214464296U
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- anchor rod
- rod body
- soft rock
- roadway support
- sleeve
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Abstract
The utility model relates to an underground works soft rock roadway support field discloses a compound scalable stock for soft rock roadway support. The compound scalable stock includes: the anchor rod comprises a first anchor rod body, a second anchor rod body, an intermediate anchor rod sleeve, a spring, an elastic base plate and a nut, wherein the first anchor rod body and the intermediate anchor rod sleeve are welded into a whole, the first anchor rod body passes through the spring and is connected with the second anchor rod body, and the nut of the elastic base plate and the fixed elastic base plate is arranged at the tail of the second anchor rod body. The utility model discloses simple structure, simple to operate can effectual adaptation soft rock initial deformation big characteristics.
Description
Technical Field
The utility model relates to an underground works soft rock roadway support field, concretely relates to compound scalable stock for soft rock roadway support.
Background
With the increasing coal mining depth in China, people pay more and more attention to the safety problem of coal mine roadway support. Most of coal mine roadway surrounding rocks belong to soft rocks, and the soft rocks have the characteristics of strong rheological property, low strength, long time for the roadway surrounding rocks to reach stress balance in the roadway tunneling process and the like. The anchor rod support is one of main modes of coal mine soft rock roadway support, so that when the anchor rod is designed, a certain elastic-plastic deformation is allowed to be formed between the surface of the rock layer and the anchor rod, and the pressure of part of soft rock on the anchor rod can be relieved. When a common anchor rod supports a soft rock roadway, the initial displacement of the soft rock is large, and the surrounding rock pressure is large, so that the common anchor rod is generally required to have high strength, and material waste can be caused. Some telescopic anchor rods realize the scalability of the anchor rod by arranging an elastic device at the head part or the tail part of the rod body, but in terms of the stress characteristic, when the middle part of the anchor rod is stressed, the anchor rod cannot effectively realize the telescopic performance, so the popularization of the anchor rod is poor.
Disclosure of Invention
An object of the utility model is to design a compound scalable stock for soft rock roadway support.
The utility model discloses a realize through following step, a compound scalable stock that is used for soft rock to strut mainly includes: the anchor rod comprises a first anchor rod body, a second anchor rod body, a middle anchor rod sleeve, a spring, an elastic base plate and a screw cap.
The first anchor rod body and the middle anchor rod sleeve are integrated through welding.
The first anchor rod body is connected with the second anchor rod body through a spring.
And the rod body at the tail part of the second anchor rod body penetrates through the elastic base plate and is fixed by a nut.
The middle anchor rod sleeve is provided with a first limiting ring and a third limiting ring, and the first limiting ring is connected with the middle anchor rod sleeve through welding.
And a second limiting ring is arranged on the second anchor rod body, and the second anchor rod body and the second limiting ring are welded into a whole.
Has the advantages that:
1. when the strength is ensured, the axis flexibility of the anchor rod is realized by utilizing the elastic action of the spring, the anchoring adaptability of the anchor rod is enhanced, and the application range of the anchor rod is enlarged.
2. After the displacement of stock reaches certain limit value, the displacement of stock will be restricted to the spacing ring on the stock and the spacing ring on the stock sleeve to the flexible scope of stock length has been injectd.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a cross-sectional view of a second anchor rod body according to the present invention.
Fig. 3 is a cross-sectional view of the middle anchor sleeve of the present invention.
In the drawings: 1-a first anchor rod body; 2-intermediate anchor rod sleeve; 3-a spring; 4-a first stop collar; 5-a second limit ring; 6-a third limit ring; 7-a second anchor rod body; 8-an elastic backing plate; 9-screw cap.
Detailed Description
The present invention will be described in detail with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, a composite telescopic anchor rod for soft rock roadway support mainly comprises: the anchor rod comprises a first anchor rod body, a second anchor rod body, an intermediate anchor rod sleeve, a spring, an elastic base plate and a nut, wherein the first anchor rod body and the intermediate anchor rod sleeve are welded into a whole, the first anchor rod body passes through the spring and is connected with the second anchor rod body, and the tail part of the second anchor rod body is provided with the elastic base plate and a nut for fixing the elastic base plate.
During installation, firstly the second limiting ring 5 is welded on the second anchor rod body 7, 4 is welded on 2, then the spring 3 is welded on the first anchor rod body 1 and the second anchor rod body 7, then the middle anchor rod sleeve 2 is sleeved on the anchor rod and welded on the first anchor rod body 1, and finally the third limiting ring 6 is welded on the middle anchor rod sleeve 2. And (3) the assembled anchor rod is arranged in a drill hole of the roadway wall, an elastic backing plate 8 is arranged at the tail end of the second anchor rod body 7, and a screw cap 9 is screwed.
Claims (3)
1. The utility model provides a compound scalable stock for soft rock roadway support which characterized in that: it mainly comprises a first anchor rod body (1), a middle anchor rod sleeve (2), a spring (3), a second anchor rod body (7), an elastic backing plate (8) and a screw cap (9),
the first anchor rod body (1) and the middle anchor rod sleeve (2) are welded into a whole;
the first anchor rod body (1) and the second anchor rod body (7) are welded with springs (3);
and the rod body at the tail part of the second anchor rod body (7) penetrates through the elastic base plate (8) and is fixed by a screw cap (9).
2. A composite telescopic anchor rod for soft rock roadway support as claimed in claim 1, wherein: be provided with first spacing ring (4) and third spacing ring (6) on middle stock sleeve (2), first spacing ring (4) pass through welded connection with middle stock sleeve (2), and third spacing ring (6) are integrated structure with middle stock sleeve (2).
3. A composite telescopic anchor rod for soft rock roadway support as claimed in claim 1, wherein: the second limiting ring (5) is arranged on the second anchor rod body (7), and the second anchor rod body (7) and the second limiting ring (5) are welded into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277365.9U CN214464296U (en) | 2020-12-30 | 2020-12-30 | Composite telescopic anchor rod for soft rock roadway support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277365.9U CN214464296U (en) | 2020-12-30 | 2020-12-30 | Composite telescopic anchor rod for soft rock roadway support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464296U true CN214464296U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023277365.9U Active CN214464296U (en) | 2020-12-30 | 2020-12-30 | Composite telescopic anchor rod for soft rock roadway support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000517A (en) * | 2021-11-04 | 2022-02-01 | 湘潭大学 | Special dirt road cut slope ecological protection structure and construction method thereof |
-
2020
- 2020-12-30 CN CN202023277365.9U patent/CN214464296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000517A (en) * | 2021-11-04 | 2022-02-01 | 湘潭大学 | Special dirt road cut slope ecological protection structure and construction method thereof |
| CN114000517B (en) * | 2021-11-04 | 2022-05-17 | 湘潭大学 | Special dirt road cut slope ecological protection structure and construction method thereof |
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