CN202531195U - Pull plate for U-shaped steel bracket of coal mine underground roadway - Google Patents
Pull plate for U-shaped steel bracket of coal mine underground roadway Download PDFInfo
- Publication number
- CN202531195U CN202531195U CN2012202201586U CN201220220158U CN202531195U CN 202531195 U CN202531195 U CN 202531195U CN 2012202201586 U CN2012202201586 U CN 2012202201586U CN 201220220158 U CN201220220158 U CN 201220220158U CN 202531195 U CN202531195 U CN 202531195U
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- China
- Prior art keywords
- shaped steel
- steel groove
- bolt hole
- plate
- bracket
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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.)
- Expired - Fee Related
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a pull plate for a U-shaped steel bracket of a coal mine underground roadway, and relates to the field of bracket reinforcing devices. The utility model aims to solve the problem of deformation of U-shaped steel, even unequal distance exists between U-shaped steel, and the like caused by connecting a fixed bracket through a metal pull hook currently. The pull plate for the U-shaped steel bracket of the coal mine underground roadway is provided with a bottom plate; a first leg plate and a second leg plate are respectively arranged at two sides of the bottom plate; a first U-shaped steel groove and a second U-shaped steel groove are arranged at two ends of the first leg plate; a third U-shaped steel groove and a fourth U-shaped steel groove are arranged on the second leg plate; and a first bolt hole, a second bolt hole, a third bolt hole and a fourth bolt hole are formed in the bottom plate. The pull plate for the U-shaped steel bracket of the coal mine underground roadway, disclosed by the utility model, is simple in structure and convenient for operation and has an obvious reinforcing effect on the bracket of the coal mine underground roadway.
Description
Technical field
The utility model relates to a kind of support bracing means, particularly relates to a kind of colliery underworkings U shape steel bracket and uses arm-tie.
Background technology
When at present excavation support uses the supporting of U shaped steel under the coal mine for guaranteeing that supporting is firm between U shaped steel and the U shaped steel; General adopt the metal drag hook between U shaped steel and U shaped steel, to be connected the fixing feasible support of forming by U shaped steel to be connected to integral body; But the contact surface of metal drag hook and U shaped steel is less, and bearing capacity is limited; On the other hand owing to the little connected mode that causes of the contact surface between metal drag hook and the U shaped steel is insecure; When the underworkings roof pressure increases or blown out shock effect, bear pressure and will cause the flexural deformation of metal drag hook so that can not play the fixedly effect of U shaped steel in case exceed the metal drag hook; The spacing that metal drag hook flexural deformation simultaneously also is prone to cause the distortion of U shaped steel even cause U shaped steel differs and has a strong impact on the supporting effect and the manufacturing schedule of underworkings support.
The utility model content
The purpose of the utility model is in order to overcome deficiency of the prior art, provides a kind of simple in structure, easy to operate and colliery underworkings U shape steel bracket that effectively improve U shaped steel supporting effect to use arm-tie.
For realizing above-mentioned purpose, the utility model provides a kind of colliery underworkings U shape steel bracket to use arm-tie, and said arm-tie is provided with base plate, and the both sides of base plate are respectively arranged with leg plate one and leg plate two, leg plate one and leg plate two and the welding of base plate vertical fixing; The two ends of said leg plate one are provided with U shaped steel groove one and U shaped steel groove two, and leg plate two is provided with U shaped steel groove three and U shaped steel groove four with the U shaped steel groove one and the U shaped steel groove two corresponding positions of leg plate one; On the corresponding base plate of U shaped steel groove one and U shaped steel groove three, bolt hole one and bolt hole two are set, on the corresponding base plate of U shaped steel groove two and U shaped steel groove four, bolt hole three and bolt hole four are set.
The utility model beneficial effect is: the colliery underworkings U shape steel bracket of the utility model is simple with pulling plate structure, easy to operate; Adopt the metal arm-tie to replace traditional metal drag hook to be used to connect U shaped steel, make the support that is formed by connecting U shaped steel on the underworkings of colliery become integral body, greatly improved the whole bearing capacity of support; The changes in spacing that causes distortion of U shaped steel and canopy U shaped steel because the connection of arm-tie makes support become that integral body has been avoided the local pressure on the inner support of tunnel again simultaneously; Therefore it is obvious to the consolidation effect of excavation support under the coal mine to adopt arm-tie to connect U shaped steel, guarantees supporting effect and workmanship.
Be described further with arm-tie below in conjunction with the colliery underworkings U shape steel bracket of accompanying drawing the utility model.
Description of drawings
Fig. 1 is that the utility model colliery underworkings U shape steel bracket is used the pulling plate structure sketch map.
Among the figure: 1, base plate, 2, leg plate one, 3, leg plate two, 4, U shaped steel groove one, 5, U shaped steel groove two, 6, U shaped steel groove three, 7, U shaped steel groove four, 8, bolt hole one, 9, bolt hole two, 10, bolt hole three, 11, bolt hole four.
The specific embodiment
As shown in Figure 1; The colliery underworkings U shape steel bracket of present embodiment is provided with base plate 1 with arm-tie; The both sides of base plate 1 are respectively arranged with leg plate 1 and leg plate 23; Leg plate 1 and leg plate 23 and the welding of base plate 1 vertical fixing; The two ends of leg plate 1 are provided with U shaped steel groove 1 and U shaped steel groove 25; Leg plate 23 is provided with U shaped steel groove 36 and U shaped steel groove 47 with the U shaped steel groove 1 and the U shaped steel groove 25 corresponding positions of leg plate 1, on the corresponding base plate 1 of U shaped steel groove 1 and U shaped steel groove 36, bolt hole 1 and bolt hole 29 is set, and on the corresponding base plate 1 of U shaped steel groove 25 and U shaped steel groove 47, bolt hole 3 10 and bolt hole 4 11 is set.
Arm-tie with present embodiment between two adjacent U shaped steel connects, and settles a U shaped steel in U shaped steel groove 1 and the U shaped steel groove 25, passes bolt hole 1 and bolt hole 29 and fastening with nut after walking around U shaped steel with U-bolt; Settle another root U shaped steel in U shaped steel groove 36 and the U shaped steel groove 47, pass bolt hole 3 10 and bolt hole 4 11 and fastening after walking around U shaped steel with U-bolt with nut.In like manner, between adjacent U shaped steel, connect with the arm-tie of present embodiment fixing, thereby realize reinforcing to excavation support under the coal mine, guarantee supporting effect and manufacturing schedule.
Claims (1)
1. a colliery underworkings U shape steel bracket is used arm-tie, it is characterized in that said arm-tie is provided with base plate, and the both sides of base plate are respectively arranged with leg plate one and leg plate two, leg plate one and leg plate two and the welding of base plate vertical fixing; The two ends of said leg plate one are provided with U shaped steel groove one and U shaped steel groove two, and leg plate two is provided with U shaped steel groove three and U shaped steel groove four with the U shaped steel groove one and the U shaped steel groove two corresponding positions of leg plate one; On the corresponding base plate of U shaped steel groove one and U shaped steel groove three, bolt hole one and bolt hole two are set, on the corresponding base plate of U shaped steel groove two and U shaped steel groove four, bolt hole three and bolt hole four are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202201586U CN202531195U (en) | 2012-05-04 | 2012-05-04 | Pull plate for U-shaped steel bracket of coal mine underground roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202201586U CN202531195U (en) | 2012-05-04 | 2012-05-04 | Pull plate for U-shaped steel bracket of coal mine underground roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531195U true CN202531195U (en) | 2012-11-14 |
Family
ID=47132385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202201586U Expired - Fee Related CN202531195U (en) | 2012-05-04 | 2012-05-04 | Pull plate for U-shaped steel bracket of coal mine underground roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531195U (en) |
-
2012
- 2012-05-04 CN CN2012202201586U patent/CN202531195U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130504 |