CN201460933U - Steel bar ladder beam of two bars and two beams - Google Patents
Steel bar ladder beam of two bars and two beams Download PDFInfo
- Publication number
- CN201460933U CN201460933U CN2009201043988U CN200920104398U CN201460933U CN 201460933 U CN201460933 U CN 201460933U CN 2009201043988 U CN2009201043988 U CN 2009201043988U CN 200920104398 U CN200920104398 U CN 200920104398U CN 201460933 U CN201460933 U CN 201460933U
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Abstract
The utility model relates to a support apparatus under mine wells, particularly a steel bar ladder beam of two bars and two beams. The utility model solves the problems that the steel bar ladder beam of one bar and one beam has single structure and low strength and is easily broken. The ladder beam consists of two parallel beams and a plurality of bar groups connecting the beams. Each of the beams is formed by welding two pieces of round steel in parallel, each bar of the bar groups is formed by welding two pieces of round steel in parallel, and limiting holes are arranged between the bars of the bar groups. The utility model is suitable for the requirements of coal road tunneling on anchor bolt support, and has broad popularization and application prospects in the further development aspect of coal road tunneling technique. The application of the ladder beam has great tactic importance to the improvement of the support skills of coal road tunneling in China, labour reduction, efficiency improvement and construction of intrinsically safe mine wells. Meanwhile, the utility model has broad popularization and application prospects in the mine areas of similar conditions.
Description
Technical field
The utility model relates to a kind of colliery and advances supporting equipment down, is specially a kind of pair of muscle twin beams reinforcing bar ladder beam.
Background technology
Abroad, the bolt support technology of country such as Australia, Britain, the U.S. is more advanced, and particularly Australian bolt support technology has formed the comparison rounded system, is in the leading level in the world.W steel band resin full length fastening combined bolt support technology is adopted in the tunnel, although its section is bigger, supporting effect is very good.For compound roof, breaking roof, and the difficult conditions of safeguarding such as roadway junction, big section chamber, also adopt anchor cable slip casting to carry out reinforcing, controlled the strong deformation of country rock.The anchor pole kind is also many, and composite member has steel band and truss.
Steel band and reinforcing bar joist are the important components in the coal entry anchor rod support.It can be tied the bearing structure that forms a whole with single anchor pole, significantly improves the whole structure of bolt support.Use more have two kinds of steel bands, i.e. flat strip steel and W steel band of model in China mine.In addition, some mining area also adopts the reinforcing bar ladder beam that is welded by round steel to replace steel band, Wang Zhuan colliery as the Lushui River peace mining area, just adopt Φ 14 round steel weldering system single reinforcement single-beam reinforcing bar ladder beam to replace steel band, also obtain better effects, ruptured easily by the beam that influences the reinforcing bar ladder beam of high pressure and self intensity, muscle weld but exist.
Summary of the invention
The utility model is single in order to solve single reinforcement single-beam reinforcing bar ladder beam structure, and intensity is low, easily the problem of fracture and a kind of pair of muscle twin beams reinforcing bar ladder beam is provided.
The utility model is realized by following technical scheme, a kind of pair of muscle twin beams reinforcing bar ladder beam is made of with the some muscle groups that are connected two beams two beams arranged side by side, and beam is welded side by side by two round steel and constitutes, the single reinforcement of muscle group has just been welded side by side by two circles and has constituted, and is spacing hole between the single reinforcement of muscle group.
Compared with prior art, described in the utility model pair of excellent having the following advantages of muscle twin beams reinforcing bar ladder beam:
1, two muscle twin beams reinforcing bar ladder beams are to adopt Φ 14 round steel weldering system to form, and the W steel band of model is the shaped steel product that utilizes the band steel to carry out clod wash, roll forming continuously through many group rolls.Compare with the W steel band of model, can save steel 60-70%.
2, two muscle twin beams reinforcing bar ladder beams are manufactured simply, and length and spacing hole spacing are not subjected to the influence of special geologic conditions such as span length, height and anchor pole spacing, arbitrarily manufacture;
3, two muscle twin beams reinforcing bar ladder beams have light weight, intensity higher, manufacture characteristics such as simple, easy to use, be convenient to the Field Force and use and operate;
When 4, adopting two muscle twin beams reinforcing bar ladder beams construction, for the inefficacy anchor pole, can be between its two beam the complement anchor pole, still single anchor pole can be tied the bearing structure that forms a whole, and the W steel band of model can only be carried out single anchor pole complement;
5, use two muscle twin beams reinforcing bar ladder beam supporting tunnels, under special geologic condition, help the top financially, strengthen group's push pipe reason place, the high top of wide group than the easier subsides of steel band;
6, adopt two muscle twin beams reinforcing bar ladder beam supporting tunnels can play the effect of release, but two muscle twin beams reinforcing bar ladder beams two ends weld is ftractureed by affected by high easily at certain condition;
The utility model not only is adapted to the needs of bolt support coal road driving, aspect the development of following coal road driving technology, have broad prospect for its application more. enforcement of the present utility model, to improving the supporting level of China's coal-mine driving, realization subtracts the people and carries and imitate and build the essential safety mine and have the important strategic meaning. simultaneously, for the mining area that condition of similarity is arranged, popularizing application prospect is widely arranged also.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
As schematically shown in Figure 1, a kind of pair of muscle twin beams reinforcing bar ladder beam is made of with the some muscle groups 3 that are connected two beams two beams arranged side by side 1,2, and beam 1,2 is welded side by side by two round steel respectively and constitutes, the single reinforcement of muscle group 3 has just been welded side by side by two circles and has constituted, and is spacing hole 4 between the single reinforcement of muscle group 3.
The width of two beams is 80mm, and all beams, muscle all adopt double joint Φ 14 round steel weldering system, and all binding sites all adopt the high strength welding.
In order to prevent that following pair of muscle twin beams reinforcing bar of high pressure ladder beam from the situation of fracture taking place, between two spacing holes of reinforcing bar ladder beam two ends, add 1 reinforcing rib 4 that Φ 14 round steel are manufactured of weldering, and reinforcing bar ladder beam two ends weld length must not be less than 100mm.
Claims (1)
1. two muscle twin beams reinforcing bar ladder beam, constitute with the some muscle groups (3) that are connected two beams by two beams arranged side by side (1,2), it is characterized in that: beam (1,2) is welded side by side by two round steel respectively and constitutes, the single reinforcement of muscle group (3) has just been welded side by side by two circles and has constituted, and is spacing hole (4) between the single reinforcement of muscle group (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201043988U CN201460933U (en) | 2009-08-27 | 2009-08-27 | Steel bar ladder beam of two bars and two beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201043988U CN201460933U (en) | 2009-08-27 | 2009-08-27 | Steel bar ladder beam of two bars and two beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460933U true CN201460933U (en) | 2010-05-12 |
Family
ID=42388287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201043988U Expired - Fee Related CN201460933U (en) | 2009-08-27 | 2009-08-27 | Steel bar ladder beam of two bars and two beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121389A (en) * | 2010-06-02 | 2011-07-13 | 中国矿业大学(北京) | Method for preventing and treating roof falling and side collapsing of coal roadway surrounding rock by anchor rope truss |
| CN102155247A (en) * | 2011-03-15 | 2011-08-17 | 李刚 | Pipe shed support device |
| CN113027497A (en) * | 2021-03-26 | 2021-06-25 | 首钢长治钢铁有限公司 | Joist and coal mine anchor rod supporting system |
-
2009
- 2009-08-27 CN CN2009201043988U patent/CN201460933U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121389A (en) * | 2010-06-02 | 2011-07-13 | 中国矿业大学(北京) | Method for preventing and treating roof falling and side collapsing of coal roadway surrounding rock by anchor rope truss |
| CN102121389B (en) * | 2010-06-02 | 2012-10-31 | 中国矿业大学(北京) | Method for preventing and treating roof falling and side collapsing of coal roadway surrounding rock by anchor rope truss |
| CN102155247A (en) * | 2011-03-15 | 2011-08-17 | 李刚 | Pipe shed support device |
| CN113027497A (en) * | 2021-03-26 | 2021-06-25 | 首钢长治钢铁有限公司 | Joist and coal mine anchor rod supporting system |
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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: 20100512 Termination date: 20110827 |