CN201246177Y - Cannon extraction working face hydraulic support - Google Patents
Cannon extraction working face hydraulic support Download PDFInfo
- Publication number
- CN201246177Y CN201246177Y CNU2008200260761U CN200820026076U CN201246177Y CN 201246177 Y CN201246177 Y CN 201246177Y CN U2008200260761 U CNU2008200260761 U CN U2008200260761U CN 200820026076 U CN200820026076 U CN 200820026076U CN 201246177 Y CN201246177 Y CN 201246177Y
- Authority
- CN
- China
- Prior art keywords
- retaining
- hydraulic support
- axle beam
- coal
- working face
- 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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Abstract
The utility model discloses a blasting working face hydraulic bracket for retaining coal in blasting. The hydraulic bracket is characterized in that a retaining coal front beam is hinged at the front end of a top beam of the hydraulic bracket; the retaining coal front beam adopts a box shape structure welded by a steel plate, and 4 to 5 rows of buffer holes with 5cm diameter are evenly distributed on the retaining coal front beam, the retaining coal front beam is supported at the middle part of the back end of the top beam of the bracket by a left-right double jack. The blasting working face hydraulic bracket effectively solves the problems of the coal retaining of a blasting working face and the damage caused by the blasting impact, so that the hydraulic bracket is applicable to the blasting working face.
Description
Technical field
The utility model relates to the coal mine work area hydraulic support.
Background technology
At present, existing hydraulic support mainly contains brace type, protected type and support shield type and extraordinary hydraulic support (comprise the comprehensive extracting and caving face hydraulic support, face end support, three soft support and support with mesh-layingdevices) four types, but the hydraulic support of above several types all can not be applied to blast mining face, mainly be not solve explosion retaining coal problem, because the blasting impact ripple is bigger, if retaining device for coal or retaining device for coal intensity are not low reliably, be easy to cause explosion to break bracket upright post, break the bracket hydraulic pipeline, even break accidents such as set cap, directly restricted the raising of blast mining face mechanization level.
Summary of the invention
When providing a kind of explosion, the technical problem that the utility model solves to keep off the blast mining face hydraulic support of coal.
For addressing the above problem, structure of the present utility model is: it comprises the hydraulic support body, it is characterized in that, front end at set cap is hinged with retaining coal front-axle beam, retaining coal front-axle beam is the case structure that is welded into by steel plate, and, being used to discharge the shock effect of blasting impact ripple at the cushion hole that keeps off 4～5 row's diameter 5cm that evenly distribute on the coal front-axle beam, two jack were supported on the middle rear end of set cap about retaining coal front-axle beam was used.
For adapting to the requirement that mining height changes, at retaining coal front-axle beam front end slip drawing and pulling type macromolecule spillplate is installed, be distributed with the cushion hole that diameter is 5cm on the spillplate.
In order to reduce the maximum impact of detonation shock wave, " allow pressure " safety valve is set on jack, make it carry out allowing and press work by a small margin, make retaining coal front-axle beam have one 10 degree allow circling round of pressing, thereby alleviate the destruction of blasting impact retaining coal front-axle beam with interior in explosion moment.
Operating principle of the present utility model and good effect are:
In blast mining face perforating and the powder charge process, can make the preceding Liangping of retaining coal stretch the supporting state that is in by jack, personnel work under its shielding.After the powder charge on line, jack is regained, and makes retaining coal front-axle beam rotate to retaining coal position, and the height of manual adjustment macromolecule spillplate, and itself and transporter spillplate are overlapped reliably, forms an explosion space with work plane sidewalk complete closed.During explosion, the detonation shock wave carries out release by front-axle beam cushion hole and adjustable macromolecule plate washer cushion hole, carry out little allowing by the jack safety valve and press work, thereby alleviate the destruction of explosion to support, has stopped the excessive of coal after the explosion.
The utility model efficiently solves the retaining coal of blast mining face and prevents the problem that blasting impact destroys, and makes hydraulic support be applicable to blast mining face.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1, Fig. 2 are the structure charts of the utility model embodiment, and wherein Fig. 1 is supporting state before the explosion, and Fig. 2 keeps off the coaly attitude during for explosion.
Among the figure: 1-jack, 2-retaining coal front-axle beam, 3-cushion hole, 4-slip drawing and pulling type macromolecule spillplate, 5-set cap.
The specific embodiment
As shown in Figure 1 and Figure 2, it is that front end at hydraulic support back timber 5 is hinged with retaining coal front-axle beam 2, retaining coal front-axle beam 2 is the case structures that are welded into by steel plate, be evenly distributed with the cushion hole of 4～5 row's diameter 5cm on retaining coal front-axle beam 2, two jack 1 are supported on the middle rear end of set cap 5 about retaining coal front-axle beam 2 usefulness.At retaining coal front-axle beam 2 front ends slip drawing and pulling type macromolecule spillplate 4 is installed, also is distributed with the cushion hole that diameter is 5cm on the spillplate 4.
Claims (3)
1, a kind of blast mining face hydraulic support, it comprises the hydraulic support body, it is characterized in that, front end at set cap is hinged with retaining coal front-axle beam, retaining coal front-axle beam is the case structure that is welded into by steel plate, and keeping off the cushion hole that is evenly distributed with 4～5 row's diameter 5cm on the coal front-axle beam, two jack were supported on the middle rear end of set cap about retaining coal front-axle beam was used.
2, blast mining face hydraulic support as claimed in claim 1 is characterized in that, at retaining coal front-axle beam front end slip drawing and pulling type macromolecule spillplate is installed, and is distributed with the cushion hole of diameter 5cm on the spillplate.
3, blast mining face hydraulic support as claimed in claim 1 or 2 is characterized in that, jack is provided with and allows the pressure safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200260761U CN201246177Y (en) | 2008-07-26 | 2008-07-26 | Cannon extraction working face hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200260761U CN201246177Y (en) | 2008-07-26 | 2008-07-26 | Cannon extraction working face hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246177Y true CN201246177Y (en) | 2009-05-27 |
Family
ID=40729997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200260761U Expired - Fee Related CN201246177Y (en) | 2008-07-26 | 2008-07-26 | Cannon extraction working face hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246177Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726845A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Special device used in explosive mining method |
| CN105715289A (en) * | 2016-04-15 | 2016-06-29 | 陕西开拓建筑科技有限公司 | Gob-side retained roadway end bracket |
| CN108661684A (en) * | 2018-04-23 | 2018-10-16 | 山东明兴矿业集团有限公司 | Suspension device and means of defence for the fully-mechanized mining working containing hard dirt band coal seam |
-
2008
- 2008-07-26 CN CNU2008200260761U patent/CN201246177Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726845A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Special device used in explosive mining method |
| CN105715289A (en) * | 2016-04-15 | 2016-06-29 | 陕西开拓建筑科技有限公司 | Gob-side retained roadway end bracket |
| CN105715289B (en) * | 2016-04-15 | 2018-05-08 | 陕西开拓建筑科技有限公司 | Gob side entry retaining face end support |
| CN108661684A (en) * | 2018-04-23 | 2018-10-16 | 山东明兴矿业集团有限公司 | Suspension device and means of defence for the fully-mechanized mining working containing hard dirt band coal seam |
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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: 20090527 Termination date: 20110726 |