CN108222982B - Stand column of zero-welding high-limit mechanism in pressure area - Google Patents
Stand column of zero-welding high-limit mechanism in pressure area Download PDFInfo
- Publication number
- CN108222982B CN108222982B CN201810175513.4A CN201810175513A CN108222982B CN 108222982 B CN108222982 B CN 108222982B CN 201810175513 A CN201810175513 A CN 201810175513A CN 108222982 B CN108222982 B CN 108222982B
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- flitch
- welded
- pressure zone
- welding
- cylinder
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- 238000003466 welding Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 239000010953 base metal Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a stand column of a pressure zone zero welding high-limit mechanism, which comprises a cylinder pipe and a large cylinder bottom, wherein the part of the cylinder pipe, which is close to the large cylinder bottom, is a high-pressure zone, the part, which is far away from the large cylinder bottom, is a non-high-pressure zone, a sheath is arranged on the part, which is close to the large cylinder bottom, of the cylinder pipe, a limit block is arranged on the sheath, a flitch is welded on the non-high-pressure zone part of the cylinder pipe, the flitch extends to the position of a lower cavity liquid inlet component, and the lower cavity liquid inlet component is welded on the flitch. The damage of the base metal caused by welding due to the welding of the pressure area is avoided, and the strength and the service life of the stand column are improved.
Description
Technical Field
The invention relates to a hydraulic support upright post for a coal mine, in particular to an upright post of a zero-welding high-limit mechanism in a pressure zone.
Background
In the use process of the upright post, the pressure of the lower cavities of all the upright posts of the hydraulic support is far greater than the working pressure of the upper cavities due to the specificity of working conditions of the upright posts. For reasons of space construction, most of the uprights require welding of lower chamber feed assemblies in the high pressure area. When the lower cavity liquid inlet component is welded on the cylinder pipe, damage can be caused to a certain extent to the cylinder pipe parent metal, so that the area of the upright post is easy to produce fatigue damage under the action of high pressure, and cracks and even bursts can be produced by taking a welding part as a source when serious.
The most commonly used welding mode of the vertical column lower cavity liquid inlet component at present comprises the following steps: the cylinder bottom limiting mechanism of the lower cavity liquid inlet component is directly welded at the high-pressure area of the cylinder pipe (shown in figure 1), the cylinder bottom limiting mechanism of the upper cavity non-high-pressure area is led to the lower cavity liquid inlet component for welding (shown in figure 2), the cylinder bottom limiting mechanism is indirectly welded at the high-pressure area after the strip is pasted at the high-pressure area of the upright cylinder pipe (shown in figure 3), and the like. The base metal is damaged by welding in a cylinder tube high-pressure area directly, and the service life and strength of the stand column are affected; the lower cavity liquid inlet component is led to the upper cavity non-high pressure area for welding, so that the space limitation of the support is limited, few hydraulic supports can be realized, the universality is low, and the occupied space is overlarge; the welding is indirectly performed in the high-voltage area after the strip is attached to the high-voltage area of the upright cylinder pipe, and the damage of the base metal caused by welding can be reduced, but the damage of the base metal caused by welding still cannot be removed, so that certain potential safety hazards exist, and the process operability is poor.
With the continuous improvement of the design level of the hydraulic support and the requirements of users, the cylinder tube welding limiting mechanism is far superior to the cylinder bottom limiting mechanism, but serious damage can be caused to the cylinder tube parent metal when the cylinder tube welding limiting mechanism (figure 4) is adopted, so that the cylinder tube welding limiting mechanism cannot be popularized at late stage.
Disclosure of Invention
The invention aims to provide a stand column of a zero-welding high-limit mechanism in a pressure zone.
The invention aims at realizing the following technical scheme:
the invention relates to a stand column of a pressure zone zero welding high-limit mechanism, which comprises a cylinder pipe and a large cylinder bottom, wherein the part of the cylinder pipe, which is close to the large cylinder bottom, is a high-pressure zone, the part, which is far away from the large cylinder bottom, is a non-high-pressure zone, a sheath is arranged on the cylinder pipe, which is close to the large cylinder bottom, a limit block is arranged on the sheath, a flitch is welded on the non-high-pressure zone part of the cylinder pipe, the flitch extends to the position of a lower cavity liquid inlet component, and the lower cavity liquid inlet component is welded on the flitch.
According to the technical scheme provided by the invention, the stand column of the pressure zone zero-welding high limiting mechanism provided by the embodiment of the invention is characterized in that the sheath is welded on the cylinder bottom, the flitch is welded on the non-high pressure zone, and other parts are welded on the sheath and the flitch, so that the damage of a base material caused by welding due to the welding of the pressure zone is avoided, the strength of the stand column is improved, and the service life of the stand column is prolonged.
Drawings
Fig. 1 is a schematic diagram of a cylinder bottom limiting mechanism for directly welding a lower cavity liquid inlet component in a high pressure area of a cylinder pipe in the prior art.
Fig. 2 is a schematic structural view of a cylinder bottom limiting mechanism for guiding a lower chamber liquid inlet component to an upper chamber non-high pressure area for welding in the prior art.
Fig. 3 is a schematic structural diagram of a cylinder bottom limiting mechanism welded in a high-pressure area indirectly after a transition pad is attached to a high-pressure area of a cylinder tube of a stand column in the prior art.
Fig. 4 is a schematic structural view of a column of a cylinder tube welding limiting mechanism in the prior art.
Fig. 5 is a schematic structural view of a column of a pressure zone zero-welding high-limit mechanism in an embodiment of the invention.
In the figure:
1. the large cylinder bottom, 2, the shield, 3, the lower cavity liquid inlet component, 4, the cylinder pipe, 5-1, the lower cavity liquid inlet component flitch in the prior art, 5-2, the lower cavity liquid inlet component flitch in the invention, 6, the shield flitch, 7, the stop gear, 8 and the shield.
Detailed Description
Embodiments of the present invention will be described in further detail below. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
The invention relates to a stand column of a pressure zone zero welding high limit mechanism, which comprises the following preferred specific embodiments:
the stand includes cylinder tube and big cylinder bottom, the part that the cylinder tube is close to big cylinder bottom is the high-pressure zone, and the part of keeping away from big cylinder bottom is the non-high pressure zone, the position that is close to big cylinder bottom on the cylinder tube is equipped with the sheath, be equipped with the stopper on the sheath, the cylinder tube welds the flitch at non-high pressure zone position, the flitch extends to lower chamber feed liquor subassembly position department, welds lower chamber feed liquor subassembly on the flitch.
The sheath and the limiting block are of an integrated structure or a welded structure.
The sheath is welded on the big cylinder bottom or welded on the cylinder pipe through a flitch or fastened on the cylinder pipe.
The flitch and the extension part thereof are a whole flitch, and a plurality of lower cavity liquid inlet components are welded on the whole flitch.
A lower cavity liquid inlet pipe is arranged between the large cylinder bottom and the lower cavity liquid inlet component, a shield is arranged outside the lower cavity liquid inlet pipe, one end of the shield is welded on the shield, and the other end of the shield is welded on the flitch.
The shield is a straight shield or a spiral bent shield.
It would be a significant challenge to achieve a zero-weld column structure for hydraulic supports, whether from the structural design of the column or from tooling.
As shown in FIG. 5, the stand column of the high limit mechanism is welded in a pressure zone in the invention, the welding adjustment of the cylinder pipe limit mechanism is performed, a sheath is welded on the outer circle of the bottom of the stand column cylinder, and then the limit block is welded on the sheath;
welding a flitch at a non-high-pressure area of the upper cavity of the upright post, extending the flitch to the position of the lower cavity liquid inlet component, and welding the lower cavity liquid inlet component on the flitch;
one end of the shield is welded on the shield, and the other end is welded on the flitch.
In the invention, the sheath is welded on the cylinder bottom, the flitch is welded in the non-high pressure area, and other parts are welded on the sheath and the flitch, so that the welding of the pressure area is avoided; the limiting mechanism is welded on the sheath to fix the limiting mechanism at a specific position of the outer circle of the cylinder tube. The proposal can be replaced by other special-shaped blocks by a limiting mechanism, and the sheath can be replaced by a structure that a flitch with uniform shape is welded on a cylinder tube. The proposal can also be replaced by a part of which the sheath and the limiting mechanism are integrated. The structure can be replaced by a straight pipe and a straight shield by using the lower cavity liquid inlet pipe and the shield.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a stand of high stop gear of zero welding in pressure district, the stand includes cylinder tube and big cylinder end, the part that the cylinder tube is close to big cylinder end is the high-pressure zone, and the part of keeping away from big cylinder end is the non-high pressure zone, its characterized in that, the position that is close to big cylinder end on the cylinder tube is equipped with the sheath, be equipped with the stopper on the sheath, the cylinder tube welds the flitch at non-high pressure zone position, the flitch extends to lower chamber feed liquor subassembly position department, welds lower chamber feed liquor subassembly on the flitch.
2. The column of the pressure zone zero-welding high limit mechanism according to claim 1, wherein the sheath and the limit block are of an integral structure or a welded structure.
3. The pressure zone zero weld high limit mechanism post of claim 2, wherein the jacket is welded to the large cylinder bottom or welded to the cylinder tube by a flitch or fastened to the cylinder tube.
4. The pressure zone zero weld high limit mechanism of claim 1, wherein the flitch and its extension are a monolithic flitch to which a plurality of lower chamber feed assemblies are welded.
5. The column of zero-welding high-limit mechanisms in pressure areas according to any one of claims 1 to 4, wherein a lower cavity liquid inlet pipe is arranged between the large cylinder bottom and the lower cavity liquid inlet component, a shield is arranged outside the lower cavity liquid inlet pipe, one end of the shield is welded on the shield, and the other end of the shield is welded on the flitch.
6. The pressure zone zero weld high limit mechanism column of claim 5, wherein the shroud is a straight shroud or a spiral curved shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810175513.4A CN108222982B (en) | 2018-03-02 | 2018-03-02 | Stand column of zero-welding high-limit mechanism in pressure area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810175513.4A CN108222982B (en) | 2018-03-02 | 2018-03-02 | Stand column of zero-welding high-limit mechanism in pressure area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108222982A CN108222982A (en) | 2018-06-29 |
| CN108222982B true CN108222982B (en) | 2023-09-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810175513.4A Active CN108222982B (en) | 2018-03-02 | 2018-03-02 | Stand column of zero-welding high-limit mechanism in pressure area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108222982B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575980A (en) * | 2009-06-05 | 2009-11-11 | 郑州煤矿机械集团股份有限公司 | Hydraulic support double-telescopic upright post |
| CN102140923A (en) * | 2011-04-12 | 2011-08-03 | 天地科技股份有限公司 | Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
| CN202612260U (en) * | 2012-06-13 | 2012-12-19 | 济宁驰众机械有限公司 | Travel-adjustable hydraulic cylinder |
| WO2014008715A1 (en) * | 2012-07-09 | 2014-01-16 | 中国矿业大学 | Hinged-connection type suspended hydraulic stand column |
| CN103628902A (en) * | 2013-12-18 | 2014-03-12 | 中煤北京煤矿机械有限责任公司 | Large-bore upright without local weld joint structure |
| CN203685230U (en) * | 2013-12-02 | 2014-07-02 | 中煤北京煤矿机械有限责任公司 | Upright post protective device |
| CN104191096A (en) * | 2014-05-30 | 2014-12-10 | 徐州徐工液压件有限公司 | Welding structure of hydraulic cylinder jacket and processing technology thereof |
| CN207944967U (en) * | 2018-03-02 | 2018-10-09 | 中煤北京煤矿机械有限责任公司 | Weld the column of high position-limit mechanism in pressure area zero |
-
2018
- 2018-03-02 CN CN201810175513.4A patent/CN108222982B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575980A (en) * | 2009-06-05 | 2009-11-11 | 郑州煤矿机械集团股份有限公司 | Hydraulic support double-telescopic upright post |
| CN102140923A (en) * | 2011-04-12 | 2011-08-03 | 天地科技股份有限公司 | Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
| CN202612260U (en) * | 2012-06-13 | 2012-12-19 | 济宁驰众机械有限公司 | Travel-adjustable hydraulic cylinder |
| WO2014008715A1 (en) * | 2012-07-09 | 2014-01-16 | 中国矿业大学 | Hinged-connection type suspended hydraulic stand column |
| CN203685230U (en) * | 2013-12-02 | 2014-07-02 | 中煤北京煤矿机械有限责任公司 | Upright post protective device |
| CN103628902A (en) * | 2013-12-18 | 2014-03-12 | 中煤北京煤矿机械有限责任公司 | Large-bore upright without local weld joint structure |
| CN104191096A (en) * | 2014-05-30 | 2014-12-10 | 徐州徐工液压件有限公司 | Welding structure of hydraulic cylinder jacket and processing technology thereof |
| CN207944967U (en) * | 2018-03-02 | 2018-10-09 | 中煤北京煤矿机械有限责任公司 | Weld the column of high position-limit mechanism in pressure area zero |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108222982A (en) | 2018-06-29 |
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