CN2504388Y - Uniform strength rockbolt body - Google Patents
Uniform strength rockbolt body Download PDFInfo
- Publication number
- CN2504388Y CN2504388Y CN 01234413 CN01234413U CN2504388Y CN 2504388 Y CN2504388 Y CN 2504388Y CN 01234413 CN01234413 CN 01234413 CN 01234413 U CN01234413 U CN 01234413U CN 2504388 Y CN2504388 Y CN 2504388Y
- Authority
- CN
- China
- Prior art keywords
- rod body
- thread
- utility
- model
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses an equal strength anchor rod body, the tensile strength of the thread section of the utility model can reach or greater than the strength of a polished section. The anchor rod body is composed of a rod body and nuts (1). The rod body is metal, the end section of the rod body is a thread body (2), and the other section of the rod body is a polished body (3). The utility model is characterized in that the thread diameter of the thread body (2) is 0.2-0.8mm which is less than the standard diameter, and the nuts (1) are thickened nuts. The utility model is applicable to the mining supporting technology field.
Description
The utility model belongs to machinery manufacturing technology field, is a kind of novel support material that is used for down-hole mining tunnel, mine, is specifically related to a kind of equal strength anchor rod body.
At present, the anchor bar body that the down-hole supporting is commonly used, the tensile strength of thread segment and light face section is unequal, and standard code tailing screw flight bearing capacity should be not less than 70% of body of rod mother metal Fracture Force, a large amount of tests show, original anchor pole all reaches this regulation, on average reaches 73%, has so just caused the low problem of anchor bar body thread segment strength ratio light face section, be equipped with plain nut in addition, reduced anchor bar body intensity, owing to adopt cutting method processing, the waste that has strengthened support cost and steel resources.
For remedying above deficiency, what provide is a kind of rational in infrastructure exactly for the purpose of this utility model, and the tensile strength height of anchor bar body thread segment can reach or greater than the equal strength anchor rod body of light face section intensity.
The utility model is to realize like this, the equal strength anchor rod body is a metallic object, body of rod rear is set to threaded body (2), another section of the body of rod is set to light face body (3), form with nut (1), the diameter of thread that it is characterized in that threaded body (2) is littler by 0.2 than normal diameter---and 0.8mm, nut (1) is set to add high nut.
Adopt equal strength anchor rod body of the present utility model, have the tensile strength height of thread segment, can reach or, saved at the bottom of the thread segment through processing technology the effect of constant product quality greater than the advantage of light face section intensity.
Description of drawings
Accompanying drawing is equal strength anchor rod body structure figure
Among the figure: 1, nut, 2, threaded body, 3, light face body,
Equal strength anchor rod body as shown in drawings, the selection diameter is the round steel of 16mm (can select on demand), be cut into the required length of the body of rod, end at the body of rod directly is rolled into the threaded body that specification is 18mm (2), and the diameter of screw thread is 17.2---between the 17.8mm, littler by 0.2---0.8mm than standard thread, use the nut (1) that matches with it, its specification is 18mm, and thickness such as is at the required thickness of the strong body of rod, and another section is set to light face body (3).
Equal strength anchor rod body of the present utility model is particularly useful for general machining enterprise and produces.In fact should be in mining roadway support.
Claims (1)
1, the equal strength anchor rod body is a metallic object, body of rod rear is set to threaded body (2), and another section of the body of rod is set to light face body (3), forms with nut (1), the diameter of thread that it is characterized in that threaded body (2) is littler by 0.2 than normal diameter---and 0.8mm, nut (1) is set to add high nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234413 CN2504388Y (en) | 2001-08-21 | 2001-08-21 | Uniform strength rockbolt body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234413 CN2504388Y (en) | 2001-08-21 | 2001-08-21 | Uniform strength rockbolt body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2504388Y true CN2504388Y (en) | 2002-08-07 |
Family
ID=33647901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01234413 Expired - Fee Related CN2504388Y (en) | 2001-08-21 | 2001-08-21 | Uniform strength rockbolt body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2504388Y (en) |
-
2001
- 2001-08-21 CN CN 01234413 patent/CN2504388Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |