CN201982117U - Back-pressure contractible U-shaped steel arched support - Google Patents
Back-pressure contractible U-shaped steel arched support Download PDFInfo
- Publication number
- CN201982117U CN201982117U CN2011200646167U CN201120064616U CN201982117U CN 201982117 U CN201982117 U CN 201982117U CN 2011200646167 U CN2011200646167 U CN 2011200646167U CN 201120064616 U CN201120064616 U CN 201120064616U CN 201982117 U CN201982117 U CN 201982117U
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- Prior art keywords
- shaped steel
- support
- pressure
- contractible
- arched support
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- 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.)
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Abstract
The utility model discloses a back-pressure contractible U-shaped steel arched support, which solves the problems of low carrying resistance pressure and low supporting capacity of the existing U-shaped steel arched support. The support comprises a surface, a webplate and a rib and is characterized in that the surface is on the outer arc and the rib is on the inner arc. Compared with the conventional positive pressure contractible U-shaped steel arched support, the support capacity of the back-pressure contractible U-shaped steel arched support can be averagely improved by 53%, and under the same mine pressure, a large unit can be replaced by a small unit to save materials, shed distance can also be enlarged, the drivage efficiency is improved, the service life of a tunnel is prolonged, the maintenance amount of the tunnel is reduced, the support cost of the U-shaped steel support is saved, the economic efficiency is improved, and the economic benefits are obvious.
Description
Affiliated technical field:
The utility model relates to the coal mine support support, relates to a kind of contractibility U-shaped steel arch support that improves steel bracket intensity or rather.
Background technology:
Along with the increase of the pit mining degree of depth, strata behaviors is more and more serious, and mine laneway supporting difficulty strengthens.No matter be that coal road or rock gangway top, the end, group press the back distortion very serious, rock gangway will be acted as a planted agent, and coal road is then wanted to repair while digging, and the road maintenance amount is very big.
Unprocessed U-shaped steel is rectilinear, generally comprises face, web, muscle three parts.The existing method that the U-shaped steel is processed into support all be face at lining arc, muscle at outer arc, it is low to carry compressive resistance, support capacity is low.In the utility model, this U-shaped steel bracket is defined as malleation contractibility U-shaped steel arch support.
Summary of the invention:
The purpose of this utility model is to provide a kind of novel U-shaped steel arch support, is defined as back-pressure contractibility U-shaped steel arch support, and the static load compressive resistance is big, can increase substantially the support capacity of support.
It is characterized in that: face at outer arc, muscle at the lining arc.
Beneficial effect:
Back-pressure contractibility U-shaped steel arch support described in the utility model on average improves 53%, average 46.2 tons of traditional static load compressive resistance, average 70.7 tons of this New-support static load compressive resistance than traditional malleation contractibility U-shaped steel arch support support capacity; Under identical ore deposit press strip spare, can also can add the booth distance with big economical with materials of little generation, improve drivage efficiency, prolong tunnel application life, reduce the road maintenance amount, save the support cost of U-shaped steel bracket, improve business efficiency, have remarkable economic efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of traditional U-shaped steel arch support.
Among the figure, 1., 2. web, 3. muscle.
The specific embodiment
As shown in Figure 1, of the present utility model 1 at outer arc, muscle 3 at the lining arc, web 2 is also in the centre.
As shown in Figure 2, at outer arc, web 2 is in the centre at lining arc, muscle 3 for the face 1 of traditional U-shaped steel arch support.
Claims (1)
1. a back-pressure contractibility U-shaped steel arch support comprises face, web, muscle three parts, it is characterized in that face at outer arc, muscle at the lining arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200646167U CN201982117U (en) | 2011-03-11 | 2011-03-11 | Back-pressure contractible U-shaped steel arched support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200646167U CN201982117U (en) | 2011-03-11 | 2011-03-11 | Back-pressure contractible U-shaped steel arched support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982117U true CN201982117U (en) | 2011-09-21 |
Family
ID=44609580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200646167U Expired - Fee Related CN201982117U (en) | 2011-03-11 | 2011-03-11 | Back-pressure contractible U-shaped steel arched support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140874A (en) * | 2011-03-11 | 2011-08-03 | 郑克传 | Counter-pressure contractible U-shaped arch steel support |
-
2011
- 2011-03-11 CN CN2011200646167U patent/CN201982117U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140874A (en) * | 2011-03-11 | 2011-08-03 | 郑克传 | Counter-pressure contractible U-shaped arch steel support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130311 |