CN108412530B - H-shaped caving coal support upright post pressing plate fixing and moving method - Google Patents
H-shaped caving coal support upright post pressing plate fixing and moving method Download PDFInfo
- Publication number
- CN108412530B CN108412530B CN201810111065.1A CN201810111065A CN108412530B CN 108412530 B CN108412530 B CN 108412530B CN 201810111065 A CN201810111065 A CN 201810111065A CN 108412530 B CN108412530 B CN 108412530B
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- Prior art keywords
- base
- pressing plate
- upright post
- fixing
- side plate
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- 238000003825 pressing Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003245 coal Substances 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 238000005065 mining Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A method for fixing and moving an H-shaped top coal caving support upright post pressing plate aims to prevent the support upright post pressing plate fixing block from being welded and ensure that a support can be moved normally; the invention firstly cuts off the original small fixed block bulges on the side plate of the bracket base by oxygen welding and cuts off the bulges and the side plate of the base; cutting a through hole on the base side plate at the original small fixing block by oxygen welding, wherein the size of the through hole is slightly larger than that of the original small fixing block; a long fixed block is inlaid in the through hole, and is fixedly connected with the inner side and the outer side of the base side plate in an inlaid full-welded manner by electric welding; the long fixing block presses the pressing plate on the long fixing block, and the pressing plate is pressed on the circular arc nest of the upright post base; the long fixing block is taken as a fulcrum, the fixing pin sequentially passes through the round hole on the pressing plate and the round hole on the side plate of the base, and the upright post base of the bracket is pressed by the pressing plate; finally, the base is lifted by the upright post, and the movable support is pulled out forwards.
Description
Technical Field
The invention relates to a method for moving a support of a fully-mechanized coal mining face, in particular to a method for moving a support after welding and fixing a stand column pressing plate fixing block of an H-shaped caving coal support.
Background
Along with the propulsion of the fully mechanized coal mining face, the H-shaped caving coal support moves forward along with the coal mining machine, and in the frame moving process, the support upright posts lift back and forth, the base is lifted by the upright posts, and the support is pulled forward, so that one working cycle is completed. The stand mainly uses the fixed block as the fulcrum, and clamp plate and fixed pin are main, and the stand circular arc nest on the dead stand of pressure is because the fixed block of fixed stand is plane welding with the support base, and long time causes fixed stand fixed block welded part atress tired easily, causes the open welding, can not move frame or lifting frame. Particularly, the fixing blocks of the upright post pressing plates of the ZF6200 bracket in the H-shaped caving coal bracket are welded, so that the bracket cannot normally move. The analysis causes are that the fixed block is welded on a plane, and the strength is insufficient; secondly, the overload operation causes the opening welding of the stand column fixing blocks of the bracket; thirdly, the underground environment is moist, and the fixed block is corroded. The fixed block falls off or is lost due to various reasons, the pressing plate loses the pivot, the stand column cannot be effectively lifted to push the support, inconvenience is brought to the normal pushing of the team, the labor intensity of the team workers at the post is increased, and the yield is seriously affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method for fixing and moving the H-shaped top coal caving support upright post pressing plate, which can effectively prevent the support upright post pressing plate fixing block from being welded and ensure the support to move normally.
The method of the invention is as follows:
(1) Cutting off the original small fixed block protrusions on the side plate of the support base by oxygen welding and cutting the small fixed block protrusions with the side plate of the base;
(2) Cutting a through hole on the base side plate at the original small fixing block by oxygen welding, wherein the size of the through hole is slightly larger than that of the original small fixing block;
(3) A long fixed block is inlaid in the through hole, one side of the base side plate is exposed for 5mm, and the long fixed block is inlaid, fully welded and fixedly connected with the inner side and the outer side of the base side plate by electric welding; the long fixing block presses the pressing plate on the long fixing block, and the pressing plate is pressed on the circular arc nest of the upright post base;
(4) The long fixing block is taken as a fulcrum, the fixing pin sequentially passes through the round hole on the pressing plate and the round hole on the side plate of the base, and the upright post base of the bracket is pressed by the pressing plate so as to strengthen the strength of the upright post base and the bracket base;
(5) The base is lifted by the upright post, and the movable support is pulled out forwards.
The extension length of the long fixed block at one side of the pressing plate is slightly larger than the thickness of the pressing plate. The fixed pin is installed with the round hole on the pressing plate and the round hole on the base side plate in a clearance way. The pressing plate is of a triangular structure, and is simple and stable and does not deform.
The method is mainly suitable for the brackets with similar models and structures such as ZF6200, ZY5000 and the like in the H-shaped caving coal bracket. The support stand clamp plate fixed block that can prevent effectively that the stand from welding is thereby prevented that the stand from coming off and the separation of support base, ensures that the support can normally move the frame and provide safe production guarantee, lightens intensity of labour, improves equipment work efficiency.
Drawings
FIG. 1 is a schematic diagram of an assembly structure of a bracket column, a pressing plate and a long fixing block;
FIG. 2 is a schematic view of the structure from the front side of FIG. 1;
in the figure: 1. through-hole, 2, long fixed block, 3, welded part, 4, stand circular arc nest, 5, base curb plate, 6, fixed pin, 7, clamp plate, 8, base, 9, stand, 10, base bottom plate.
Detailed Description
Embodiment 1:
in the next half of 2016, 18 small fixed blocks on the ZF6200 bracket fall off during the coal mining of a working face of a male coal group, and the pressing plate 7 loses a fulcrum, so that the upright post 9 cannot effectively lift the base pushing bracket. In this regard, the above-described support is modified according to the method of the present invention. The transformation process is as follows:
(1) Cutting off the original small fixed block protrusions on the side plate of the support base by oxygen welding and cutting the small fixed block protrusions with the side plate of the base;
(2) Cutting a through hole 1 on the base side plate 5 at the original small fixed block by oxygen welding, wherein the size of the through hole 1 is slightly larger than that of the original small fixed block; the original small fixed block is 40X 30mm in size; the size of the cut through hole 1 is 45 multiplied by 35mm;
(3) A long fixed block 2 is inlaid in the through hole 1, the long fixed block 2 is exposed 5mm at one side of the base side plate 5, the long fixed block 2 and the base side plate 5 are fixedly connected by welding through electric welding, and the welding part 3 is inlaid full-welded; pressing a pressing plate 7 on the long fixed block 2, wherein the pressing plate 7 is pressed on the circular arc nest 4 of the stand column base.
(4) The long fixing block is used as a fulcrum, the fixing pin 6 sequentially penetrates through the round hole of the pressing plate 7 and the round hole on the base side plate 5, the upright post base of the support is pressed by the pressing plate 7, and the strength of the upright post base and the support base is enhanced. The fixing pin 6 is installed with the round hole in a clearance way. The pressing plate 7 has a triangular structure, is simple and stable and does not deform.
The thickness of the base side plate 5 is 30mm, the thickness of the pressing plate 7 is 20mm, and the total length of the long fixing block 2 is 60mm with errors, gaps and welding positions. The dimensions of the long fixed block 2 are 40×30×60mm. Two base side plates 5 are arranged on the base bottom plate 10.
(5) The support modified according to the method of the invention is lowered into the well, the base 8 is lifted by the upright post 9, and the movable support is pulled forward.
After transformation, the ZF6200 bracket can normally move, and the open welding fault of the long fixing block 2 does not occur; in order to ensure safety, the support operation process flow and support working principle training of the post construction site are also trained, the long fixing blocks 2 on the ZF6200 support upright post are periodically disassembled and inspected monthly, the working efficiency of equipment is improved, and direct contribution is made to high yield and high efficiency of enterprises.
Embodiment 2:
in 2017, 2 months, a ZY5000 bracket is installed on a working surface of a male coal group, and the bracket is reformed according to the method of the invention, because the bracket has the same problems as the ZF6200 bracket in structure, and the reforming process is the same as that of the embodiment 1.
After transformation, the ZY5000 bracket can be normally moved, so far, the open welding fault of the overlong fixed block 2 does not occur.
Claims (4)
1. A method for fixing and moving an upright post pressing plate of an H-shaped caving coal bracket is characterized by comprising the following steps:
(1) Cutting off the original small fixed block protrusions on the side plate of the support base by oxygen welding and cutting the small fixed block protrusions with the side plate of the base;
(2) Cutting a through hole on the base side plate at the original small fixing block by oxygen welding, wherein the size of the through hole is slightly larger than that of the original small fixing block;
(3) A long fixed block is inlaid in the through hole, one side of the base side plate is exposed for 5mm, and the long fixed block is inlaid, fully welded and fixedly connected with the inner side and the outer side of the base side plate by electric welding; the long fixing block is pressed on the pressing plate, and the pressing plate is pressed on the circular arc nest of the upright post base;
(4) The long fixing block is taken as a fulcrum, the fixing pin sequentially passes through the round hole on the pressing plate and the round hole on the side plate of the base, and the upright post base of the bracket is pressed by the pressing plate so as to strengthen the strength of the upright post base and the bracket base;
(5) The base is lifted by the upright post, and the movable support is pulled out forwards.
2. The method for fixing and moving the upright post pressing plate of the H-shaped caving coal bracket according to claim 1, wherein the extension length of the long fixing block on one side of the pressing plate is slightly larger than the thickness of the pressing plate.
3. The method for fixing and moving the upright post pressing plate of the H-shaped caving coal bracket according to claim 1 or 2, wherein the fixing pin is installed with a round hole on the pressing plate and a round hole on a side plate of the base in a clearance manner.
4. The method for fixing and moving the upright post pressing plate of the H-shaped caving coal bracket according to claim 1 or 2, wherein the pressing plate has a simple and stable triangular structure without deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810111065.1A CN108412530B (en) | 2018-02-05 | 2018-02-05 | H-shaped caving coal support upright post pressing plate fixing and moving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810111065.1A CN108412530B (en) | 2018-02-05 | 2018-02-05 | H-shaped caving coal support upright post pressing plate fixing and moving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108412530A CN108412530A (en) | 2018-08-17 |
| CN108412530B true CN108412530B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810111065.1A Active CN108412530B (en) | 2018-02-05 | 2018-02-05 | H-shaped caving coal support upright post pressing plate fixing and moving method |
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| Country | Link |
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| CN (1) | CN108412530B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209454A (en) * | 2018-10-26 | 2019-01-15 | 三重型装备有限公司 | Hydraulic support column pressing plate fixed mechanism and hydraulic support |
| CN112031848B (en) * | 2020-09-02 | 2022-03-25 | 六盘水师范学院 | H-shaped caving coal support pressing plate fixing mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2767300A (en) * | 1999-11-10 | 2001-05-17 | Yankuang Group Corporation | A sub-level caving hydraulic support with a low-positioned door for passing caved coal |
| CN2758486Y (en) * | 2005-05-26 | 2006-02-15 | 郑州煤炭工业(集团)有限责任公司 | Fast supporter moving device of 'three soft' coal layer composite mining top coal supporter series |
| AU2005242116A1 (en) * | 2004-12-10 | 2006-06-29 | Yanzhou Coal Mining Company Limited | Electro-hydraulically controlled roof coal caving method and hydraulic support therefor |
| CN106194229A (en) * | 2016-08-30 | 2016-12-07 | 安徽理工大学 | A kind of support directional movement structure improved based on support base plate and method |
| CN106523011A (en) * | 2016-12-22 | 2017-03-22 | 河南工程学院 | Simple light rack and top coal caving method applying rack |
| CN207944974U (en) * | 2018-02-05 | 2018-10-09 | 阳泉煤业（集团）有限责任公司 | A kind of H-type sublevel caving hydrau lic support column pressing plate fixed mechanism |
-
2018
- 2018-02-05 CN CN201810111065.1A patent/CN108412530B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2767300A (en) * | 1999-11-10 | 2001-05-17 | Yankuang Group Corporation | A sub-level caving hydraulic support with a low-positioned door for passing caved coal |
| AU2005242116A1 (en) * | 2004-12-10 | 2006-06-29 | Yanzhou Coal Mining Company Limited | Electro-hydraulically controlled roof coal caving method and hydraulic support therefor |
| CN2758486Y (en) * | 2005-05-26 | 2006-02-15 | 郑州煤炭工业(集团)有限责任公司 | Fast supporter moving device of 'three soft' coal layer composite mining top coal supporter series |
| CN106194229A (en) * | 2016-08-30 | 2016-12-07 | 安徽理工大学 | A kind of support directional movement structure improved based on support base plate and method |
| CN106523011A (en) * | 2016-12-22 | 2017-03-22 | 河南工程学院 | Simple light rack and top coal caving method applying rack |
| CN207944974U (en) * | 2018-02-05 | 2018-10-09 | 阳泉煤业（集团）有限责任公司 | A kind of H-type sublevel caving hydrau lic support column pressing plate fixed mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 阳煤五矿8320工作面开采条件及采煤工艺研究;刘志辉;;机械管理开发(04);68-69, 101 * |
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| CN108412530A (en) | 2018-08-17 |
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