CN202176346U - Guide ring overwelding seam large-cylinder bottom double-telescopic upright column - Google Patents
Guide ring overwelding seam large-cylinder bottom double-telescopic upright column Download PDFInfo
- Publication number
- CN202176346U CN202176346U CN2011201043839U CN201120104383U CN202176346U CN 202176346 U CN202176346 U CN 202176346U CN 2011201043839 U CN2011201043839 U CN 2011201043839U CN 201120104383 U CN201120104383 U CN 201120104383U CN 202176346 U CN202176346 U CN 202176346U
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- cylinder
- cylinder bottom
- guide ring
- weld seam
- telescopic upright
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Abstract
The utility model relates to a guide ring overwelding seam large-cylinder bottom double-telescopic upright column. The telescopic ratio of the double-telescopic upright column is effectively enhanced through a guide ring overwelding seam structure and a method for increasing the spheric radius of the bottom of an outer cylinder. The safety of the double-telescopic upright column is effectively enhanced by adding a bypass safety valve to the double-telescopic upright column. The guide ring overwelding seam is realized by adopting an interference avoidance structure without processing after a cylinder bottom and a cylinder barrel are welded, so that the processing process is simplified and the maintenance of a cylinder body is facilitated during usage. In addition, the guide ring overwelding seam large-cylinder bottom double-telescopic upright column is especially suitable for a low-coal-seam hydraulic support and a hydraulic support which has lower support efficiency caused by insufficient telescopic ratio of the double-telescopic upright column.
Description
Technical field
The present invention relates to colliery underground mining work plane and use the support apparatus technical field, belong to a kind of and be specifically designed to the guide ring that hydraulic support for low coal seam uses and cross the big cylinder bottom double-telescopic upright post of weld seam.
Background technology
Along with development of Mechanized Coal Mining Operation in China and energy strategy, the work plane of girdle occurs in succession, and it is more and more that hydraulic support for low coal seam uses.At present, one of key technology of restriction thin seam mining is the coal mining height of hydraulic support for low coal seam, and the crucial dynamical element of restriction hydraulic support for low coal seam is the big double-telescopic upright post of magnification.Conventional column is owing to the less needs that are difficult to satisfy Bracket in Thin Coal Seam of magnification, and the hydraulic support that uses at medium-thickness seam also can influence supporting efficiency owing to magnification is not enough, and to develop big magnification double-telescopic upright post imperative for this reason.Guide ring is crossed the big cylinder bottom double-telescopic upright post of weld seam under the prerequisite that guarantees reliability, increases substantially the magnification of column, both can satisfy the requirement of hydraulic support for low coal seam coal mining height, can improve the ordinary stent supporting efficiency again, is the critical component on the hydraulic support.
Summary of the invention
The purpose of this invention is to provide a kind of guide ring and cross the big cylinder bottom double-telescopic upright post of weld seam, increase substantially the magnification and the reliability of column.
For realizing above-mentioned purpose, the present invention takes following design scheme:
Adopt a kind of guide ring to cross the outer cylinder welding line structure; Process (or outer) positioning cylindrical surface and axial location plane in the radial location on the outer cylinder bottom; Process outer (or interior) radial location face of cylinder and axial location plane on the cylinder barrel; And make the cylinder barrel interior diameter of outer shell welded seam area and cylinder barrel inner surface diameter that one diameter increase relatively arranged, thereby can make guide ring pass through weld seam.The outer shell of design has like this increased the stroke that guide ring loses can not be through weld seam the time, the bearing length of cylinder in effectively increasing; The canned paragraph of cylinder and outer shell in reducing; Increase the magnification of column, increased outer shell and middle cylinder bearing length when stretching out simultaneously, improved reliability.
Adopt a kind of guide ring to cross middle cylinder cylinder barrel welding line structure; Process outer (or interior) positioning cylindrical surface of radial location and axial location plane on the middle cylinder bottom; (or outer) the radial location face of cylinder and axial location plane in processing on the middle cylinder barrel; And the cylinder barrel interior diameter and the middle cylinder barrel inner surface diameter of cylinder welded seam area relatively has a diameter increase in making, thereby can make guide ring pass through weld seam.The middle cylinder of design has like this been avoided the loss of travel of guide ring can not be through weld seam the time, effectively increases the bearing length of the post of living, and the canned paragraph of reduce to live post and middle cylinder has increased magnification and the reliability of column.
Column outer shell cylinder bottom adopts big spherical radius structure; Outer cylinder bottom inside is emptied; Can be in the cylinder bottom space content be received the cylinder bottom part, and then in middle cylinder bottom, hold column bottom alive branch, solved effectively that outer shell cylinder bottom spherical radius was less in the past can't realize the cylinder bottom problem of cover mutually; Thereby shortened the canned paragraph of column, increased the magnification of column.
The cylinder barrel diameter of a kind of weld seam influence area connects with 20 degree oblique angles at the diameter transition place greater than the cylinder barrel diameter structure, and this structure does not need postwelding processing, and weld seam becomes monolateral broken line type, and reliability is high; In use, when the cylinder barrel surface goes wrong,, help the reparation on cylinder barrel surface owing to got rid of the interference of nearly cylinder bottom part.
A kind of increase bypass safety valve structure when column receives surge, effectively increases the output of unloading of pressure fluid, thereby guarantees the safety of column.
The invention provides a kind of guide ring and cross the big magnification double-telescopic upright post of weld seam; When the column height hour can make magnification increase 50%, and the bearing length of the increase column of limits, improved the shock resistance of column; Optimized the stressed of each part of column; Make each part convergence equal strength, reliability improves, and is specially adapted to hydraulic support for low coal seam.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention
Fig. 2 is that the A of Fig. 1 is to view
Fig. 3 is the B-B cross section view of Fig. 2
Fig. 4 crosses the structural representation of outer shell weld seam for guide ring in the embodiment of the invention
Fig. 5 crosses the structural representation of middle cylinder weld seam for guide ring in the embodiment of the invention
The specific embodiment
Referring to Fig. 1, Fig. 2 and shown in Figure 3: a kind of guide ring is crossed the big cylinder bottom double-telescopic upright post of weld seam, forms main stressed member by outer shell 1, middle cylinder 2 and the post 3 of living, and guide ring 4 is housed on middle cylinder, on the work post, guide ring 5 is housed.Hollow is processed in outer shell cylinder bottom inside, in cylinder bottom be placed on to greatest extent among its cavity; In the cylinder bottom in being placed on to greatest extent at the bottom of the post of living, make the three have bigger coincidence degree simultaneously.In the scope that side (see figure 2) 40 degree～45 of outer shell are spent, bypass safety valve (see figure 3) interface K is set, so that safety valve to be installed.
The outer shell guide ring is crossed the structure of cylinder bottom and cylinder barrel weld seam among the Fig. 1 of being shown in Figure 4: process positioning cylindrical surface A and axial location plane B in the radial location on the outer cylinder bottom 102; Process outer radial positioning cylindrical surface A and axial location plane B on the cylinder barrel 101; And make its non-cooperation face of cylinder diameter phi D1 one increase arranged than cylinder barrel inner surface diameter φ D; And with 20 degree oblique angle C connection, thereby can make guide ring 4 through weld seam 103.
The cylinder guide ring is crossed the structure of cylinder bottom and cylinder barrel weld seam among the Fig. 1 of being shown in Figure 5: process radial location outside fix face of cylinder D and axial location plane E on the middle cylinder bottom 202; Radially positioning cylindrical surface D and axial location plane E in processing on the cylinder barrel 201; And make its non-cooperation face of cylinder diameter phi D3 than in cylinder barrel inner surface diameter φ D2 one increase is arranged; And with 20 degree oblique angle F connection, thereby can make guide ring 5 through weld seam 203.
Claims (6)
1. a guide ring is crossed the big cylinder bottom double-telescopic upright post of weld seam, and the guide ring of middle cylinder and outer shell can be through the weld seam of outer cylinder and its cylinder bottom; The guide ring of post alive and middle cylinder can be through the weld seam of middle cylinder and middle cylinder bottom; Outer cylinder bottom adopts the cylinder bottom of big spherical radius.
2. guide ring according to claim 1 is crossed the big cylinder bottom double-telescopic upright post of weld seam; It is characterized in that processing positioning cylindrical surface (A) and axial location plane (B) in the radial location on the cylinder bottom (102) outside; Process outer radial positioning cylindrical surface and axial location plane on the cylinder barrel (101), and make guide ring pass through weld seam in the method for the weld seam influence area of outer shell (1) increase outer shell inner surface diameter size.
3. guide ring according to claim 1 is crossed the big cylinder bottom double-telescopic upright post of weld seam; It is characterized in that on middle cylinder bottom (202), processing the radial location outside fix face of cylinder (D) and axial location plane (E); In process on the cylinder barrel (201) in radially positioning cylindrical surface and axial location plane, and the method for cylinder inner surface diameter size makes guide ring pass through weld seam in the increase of middle cylinder (2) weld seam influence area.
4. guide ring according to claim 1 is crossed the big cylinder bottom double-telescopic upright post of weld seam, it is characterized in that the radius of outer shell cylinder bottom (102) is bigger, and cylinder bottom inside is emptied, and receives middle cylinder bottom (202) part in the cylinder bottom space content, in middle cylinder bottom, holds column bottom alive branch.
5. guide ring according to claim 2 is crossed the big cylinder bottom double-telescopic upright post of weld seam, it is characterized in that excessively locating to connect with 20 degree oblique angles (C) at diameter at the outer shell interior diameter of the weld seam influence area of the outer shell outer shell interior diameter greater than non-influence area.
6. guide ring according to claim 3 is crossed the big cylinder bottom double-telescopic upright post of weld seam, it is characterized in that excessively locating to connect with 20 degree oblique angles (F) at diameter at the middle cylinder cylinder interior diameter of the weld seam influence area of the middle cylinder middle cylinder interior diameter greater than non-influence area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201043839U CN202176346U (en) | 2011-04-12 | 2011-04-12 | Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201043839U CN202176346U (en) | 2011-04-12 | 2011-04-12 | Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176346U true CN202176346U (en) | 2012-03-28 |
Family
ID=45866231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201043839U Expired - Fee Related CN202176346U (en) | 2011-04-12 | 2011-04-12 | Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176346U (en) |
-
2011
- 2011-04-12 CN CN2011201043839U patent/CN202176346U/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: 20120328 Termination date: 20140412 |