CN214464297U - Mining compound telescopic anchor rod - Google Patents
Mining compound telescopic anchor rod Download PDFInfo
- Publication number
- CN214464297U CN214464297U CN202023277504.8U CN202023277504U CN214464297U CN 214464297 U CN214464297 U CN 214464297U CN 202023277504 U CN202023277504 U CN 202023277504U CN 214464297 U CN214464297 U CN 214464297U
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- anchor rod
- rod body
- mining
- anchor
- metal ring
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Abstract
The utility model relates to a field is strutted in mineral engineering, discloses a mining compound scalable stock. The compound scalable stock mainly includes: the anchor rod comprises a first anchor rod body, a second anchor rod body, an anchor rod sleeve, a main spring, a secondary spring, an elastic base plate and a nut, wherein the first anchor rod body is connected with the second anchor rod body through the main spring, the first anchor rod body and the second anchor rod body are both installed in the anchor rod sleeve, and the tail of the second anchor rod body is provided with the elastic base plate and the nut for fixing the elastic base plate. The utility model discloses simple structure, simple to operate, flexible volume is big.
Description
Technical Field
The utility model relates to a field is strutted in mineral engineering, in particular to mining compound scalable stock.
Background
With the decreasing of shallow coal mine resources, coal mining activities are carried out towards deeper strata and strata with more complex geological conditions in China. When underground coal mining is carried out, a reasonable supporting means is required to be selected in order to ensure the effective space of coal mining and safe production of coal mining. The anchor bolt support has the advantages of good effect, material saving and convenient construction, so the anchor bolt support is widely applied to the field of mining support. However, the self-bearing capacity of surrounding rock is not considered in the common anchor bolt support, so that the requirement on the strength of anchor bolt materials is higher when the anchor bolt support is used. Therefore, when the anchor rod is designed, the anchor rod has certain scalability, so that the anchor rod and the surrounding rock are deformed together, a non-elastic deformation area in a certain range is formed in the surrounding rock, the appropriate development of the surrounding rock plastic area can be effectively controlled, the self-supporting capability of the surrounding rock can be fully exerted, and the anchor rod supporting cost can be effectively reduced. The scalability of some telescopic anchor rods is realized by arranging an elastic device at the head or the tail of the anchor rod, but the anchor rod has poor stress performance and poor popularization.
Disclosure of Invention
An object of the utility model is to design a simple to operate, flexible volume is big, the compound scalable stock that anchor power is strong.
The utility model discloses a realize through following step, a mining compound scalable stock mainly includes: the anchor rod comprises a first anchor rod body, a second anchor rod body, an anchor rod sleeve, a main spring, a secondary spring, an elastic base plate and a screw cap.
The first anchor rod body is connected with the second anchor rod body through a main 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 screw cap.
And a first metal ring and a movable second metal ring are welded on the second anchor rod body.
And the first metal ring and the second metal ring are provided with contacts, and secondary springs are arranged on the contacts.
The anchor rod sleeve and the limiting ring are of an integrated structure.
Has the advantages that:
1. the anchor rod and the surrounding rock are deformed together, and certain surrounding rock pressure is released, so that the effect of saving materials is achieved.
2. The main spring and the secondary spring are stressed together to effectively increase the expansion amount of the anchor rod, and the secondary spring also has a limiting and buffering effect.
3. When the displacement of the anchor rod reaches a certain limit value, the length expansion range of the anchor rod is limited by the limiting ring on the anchor rod sleeve.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Figure 2 is a cross-sectional view of a second anchor rod body of the present invention.
Fig. 3 is a cross-sectional view of the anchor sleeve of the present invention.
In the drawings: 1-an anchor rod sleeve; 2-a first anchor rod body; 3-a main spring; 4-a first metal ring; 5-a contact; 6-time spring; 7-a second metal ring; 8-a limit ring; 9-a second anchor rod body; 10-an elastic backing plate; 11-nut.
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 mining composite telescopic anchor rod mainly comprises: the anchor rod comprises a first anchor rod body, a second anchor rod body, an anchor rod sleeve, a main spring, a secondary spring, an elastic base plate and a nut, wherein the first anchor rod body is connected with the second anchor rod body through the main spring, the first anchor rod body and the second anchor rod body are both installed in the anchor rod sleeve, and the tail of the second anchor rod body is provided with the elastic base plate and the nut for fixing the elastic base plate.
During installation, the first metal ring 4 is welded on the second anchor rod body 9, the second metal ring 7 is sleeved on the second anchor rod body, the secondary spring 6 is welded on the contact 5 on the metal ring, the main spring 3 is welded on the first anchor rod body 2 and the second anchor rod body 9, and the assembled anchor rod body is installed in the anchor rod sleeve 1. The anchor rod and the anchor rod sleeve which are assembled into a whole are arranged in the drill hole, the tail end of the second anchor rod body 9 is provided with an elastic backing plate 10, and a nut 11 is screwed.
Claims (4)
1. The utility model provides a mining compound scalable stock which characterized in that: it mainly comprises an anchor rod sleeve (1), a first anchor rod body (2), a main spring (3), a secondary spring (6), a second anchor rod body (9), an elastic backing plate (10) and a screw cap (11),
the first anchor rod body (2) is connected with the second anchor rod body (9) through a main spring (3);
the first anchor rod body (2) and the second anchor rod body (9) are both arranged in the anchor rod sleeve (1);
and the rod body at the tail part of the second anchor rod body (9) penetrates through the elastic cushion plate (10) and is fixed by a screw cap (11).
2. The mining composite telescopic anchor rod of claim 1, wherein: a first metal ring (4) and a movable second metal ring (7) are welded on the second anchor rod body (9).
3. The mining composite telescopic anchor rod of claim 2, wherein: the first metal ring (4) and the second metal ring (7) are both provided with a contact (5), and the contact (5) is provided with a secondary spring (6).
4. The mining composite telescopic anchor rod of claim 1, wherein: the anchor rod sleeve (1) and the limiting ring (8) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277504.8U CN214464297U (en) | 2020-12-30 | 2020-12-30 | Mining compound telescopic anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277504.8U CN214464297U (en) | 2020-12-30 | 2020-12-30 | Mining compound telescopic anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464297U true CN214464297U (en) | 2021-10-22 |
Family
ID=78135980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023277504.8U Active CN214464297U (en) | 2020-12-30 | 2020-12-30 | Mining compound telescopic anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464297U (en) |
-
2020
- 2020-12-30 CN CN202023277504.8U patent/CN214464297U/en active Active
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