CN101498222A - Double telescopic column and hydraulic support - Google Patents
Double telescopic column and hydraulic support Download PDFInfo
- Publication number
- CN101498222A CN101498222A CNA2009100799155A CN200910079915A CN101498222A CN 101498222 A CN101498222 A CN 101498222A CN A2009100799155 A CNA2009100799155 A CN A2009100799155A CN 200910079915 A CN200910079915 A CN 200910079915A CN 101498222 A CN101498222 A CN 101498222A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- double
- big
- upright post
- telescopic upright
- Prior art date
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- 239000000463 materials Substances 0.000 claims description 7
- 230000000875 corresponding Effects 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 5
- 239000007788 liquids Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of bracing or strutting arrangement, relate in particular to a kind of double-telescopic upright post and hydraulic support.
Background technology
In coal mining, along with continuing to increase of fully-mechanized mining working mining rate, the working resistance of hydraulic support trend ultimate development is exactly a column and can satisfy the key element that the working resistance of hydraulic support requires.
Column of the prior art, maximum is the column of φ 420mm, φ 450mm cylinder diameter, can be used on the electrichydraulic control support of 12000KN.
There is following shortcoming at least in above-mentioned prior art:
Be subjected to the influence of column cylinder diameter, the working resistance of hydraulic support, supporting intensity and supporting height are restricted.
Summary of the invention
The double-telescopic upright post and the hydraulic support that the purpose of this invention is to provide a kind of high workload resistance, high supporting intensity, big supporting height.
The objective of the invention is to be achieved through the following technical solutions:
Double-telescopic upright post of the present invention, comprise big cylinder body, the inside of described big cylinder body is provided with middle cylinder body, the inside of cylinder body is provided with cylinder alive in described, the diapire of cylinder body is provided with bottom valve in described, communicates between the plunger shaft that the opening or closing of described bottom valve makes described big cylinder body and the plunger shaft of described middle cylinder body or disconnects;
The internal diameter of described big cylinder body is more than or equal to 500mm; The stroke of described cylinder alive is more than or equal to 5m;
Described big cylinder body is 27SiMn with the material of the cylinder of living.
Hydraulic support of the present invention is provided with above-mentioned double-telescopic upright post between the top board of this hydraulic support and the base.
As seen from the above technical solution provided by the invention, double-telescopic upright post of the present invention and hydraulic support, owing to realize that by big cylinder body, middle cylinder body, the cylinder of living, bottom valve secondary is flexible, big cylinder body is 27SiMn with the material of the cylinder of living, the internal diameter of big cylinder body is more than or equal to 500mm, and the stroke of the cylinder of living is more than or equal to 5m.Can effectively improve working resistance, supporting intensity and the supporting height of hydraulic support.
Description of drawings
Fig. 1 is the structural representation of double-telescopic upright post of the present invention;
Fig. 2 is the partial structurtes schematic diagram of fairlead among the present invention.
The specific embodiment
Double-telescopic upright post of the present invention, its preferable specific embodiment as shown in Figure 1, comprise big cylinder body 1, cylinder body 3 during be equipped with the inside of big cylinder body 1, the inside of middle cylinder body 3 is provided with cylinder 4 alive, bottom valve 2 is equipped with in the bottom of cylinder body 3 in described, communicates between the plunger shaft that the opening or closing of bottom valve 2 makes big cylinder body 1 and the plunger shaft of middle cylinder body 3 or disconnects.
Big fairlead 5 can be provided with between big cylinder body 1 and the middle cylinder body 3, little fairlead 6 can be provided with, the guide effect when playing the column lifting between middle cylinder body 3 and the cylinder 4 alive.
As shown in Figure 2, the inwall of big fairlead 5 and the inwall of little fairlead 6 can be respectively equipped with four guide rings 7.The guide ring of installing on the fairlead increases to four by in the past two, to strengthen guide effect, satisfies the support capacity and the requirement for height of support.
The internal diameter of big cylinder body is more than or equal to 500mm; The stroke of cylinder alive is more than or equal to 5m; Big cylinder body can be 27SiMn with the material of the cylinder of living.
The lower end of the upper end of cylinder 4 alive and big cylinder body 1 can be respectively spherical, is convenient to be connected with base with the top board of hydraulic support.
The inside of cylinder 4 alive is provided with cavity vertically, and the lower end of cavity communicates with the rod end chamber of middle cylinder body 3; The upper end of cavity is by the 3rd liquid mouth C and exterior.
The core of bottom valve 2 is provided with the cavity of up/down perforation, is provided with push rod in the cavity, is provided with spring between the top of push rod and the roof of cavity, and spring compresses push rod downwards, and cavity is closed.The bottom surface of bottom valve 2 is stretched out in the lower end of push rod, and the position corresponding to push rod on the diapire of big cylinder body 1 is provided with boss, and when central cylinder body 3 was moved down into desired location, boss was with push rod jack-up, and bottom valve 2 is opened.
Hydraulic support of the present invention, its preferable specific embodiment are to be provided with above-mentioned double-telescopic upright post between the top board of this hydraulic support and the base.A hydraulic support can be established 2 to 4 above-mentioned double-telescopic upright posts.
Below operating principle of the present invention is described in detail:
The plunger shaft of big cylinder body 1 and rod end chamber are respectively by the first liquid mouth A and second liquid mouth B and the exterior, when hydraulic support rises frame, the first liquid mouth A feed liquor, the first liquid mouth B returns liquid, and middle cylinder body 3 stretches out earlier, reach the limit of the position after, bottom valve 2 is opened, liquid enters middle cylinder piston chamber, and the cylinder 4 of living stretches out, and rises the frame action and finishes.
When frame falls in hydraulic support, liquid mouth B, C feed liquor, liquid mouth A returns liquid, in cylinder body 3 withdrawal earlier, reach the limit of the position after, bottom valve 2 is opened, middle cylinder body 3 plunger shaft communicate with big cylinder body 1 plunger shaft, liquid in middle cylinder body 3 plunger shaft is flowed back to by the first liquid mouth A on the big cylinder body 1, and cylinder 4 withdrawals of living are fallen the frame action and finished.
Among the present invention, the big cylinder body of double-telescopic upright post can adopt 27SiMn tubing to make.Operating pressure in considering in the cylinder body is higher, be the requirement of strength of cylinder body in guaranteeing, the material of middle cylinder body can be selected the higher material of intensity for use, because the wall thickness dimension of fairlead is thinner, for avoiding after the heat treatment because the distortion that stress produces, its material selection 40Cr.Cylinder alive and other part can be selected 27SiMn for use.
This kind double-telescopic upright post is simple in structure, easy to use, reliability is high, is particularly useful for big mining height liquid support and selects for use.The working resistance of single upright column surpasses 8500KN, when working resistance of support during greater than 17000KN, can satisfy the support capacity and the requirement for height of support.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100799155A CN101498222A (en) | 2009-03-12 | 2009-03-12 | Double telescopic column and hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100799155A CN101498222A (en) | 2009-03-12 | 2009-03-12 | Double telescopic column and hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101498222A true CN101498222A (en) | 2009-08-05 |
Family
ID=40945473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100799155A CN101498222A (en) | 2009-03-12 | 2009-03-12 | Double telescopic column and hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101498222A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102536274A (en) * | 2012-01-10 | 2012-07-04 | 中煤北京煤矿机械有限责任公司 | Equipressure double-telescopic prop |
| CN102562100A (en) * | 2010-12-13 | 2012-07-11 | 襄樊禹仁机电液压科技有限公司 | Automatic exhausting single hydraulic prop |
| CN103603975A (en) * | 2013-11-26 | 2014-02-26 | 湖南特力液压有限公司 | Check valve with push rod and multi-stage hydraulic cylinder |
| CN103939412A (en) * | 2014-05-05 | 2014-07-23 | 湘潭大学 | Rubbish transfer station compression oil cylinder and hydraulic control device of rubbish transfer station compression oil cylinder |
| CN104047622A (en) * | 2014-06-09 | 2014-09-17 | 大连宏远气动液压船舶辅机有限公司 | Double-telescoping stand column of hydraulic support |
-
2009
- 2009-03-12 CN CNA2009100799155A patent/CN101498222A/en not_active Application Discontinuation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562100A (en) * | 2010-12-13 | 2012-07-11 | 襄樊禹仁机电液压科技有限公司 | Automatic exhausting single hydraulic prop |
| 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 |
| CN102536274A (en) * | 2012-01-10 | 2012-07-04 | 中煤北京煤矿机械有限责任公司 | Equipressure double-telescopic prop |
| CN103603975A (en) * | 2013-11-26 | 2014-02-26 | 湖南特力液压有限公司 | Check valve with push rod and multi-stage hydraulic cylinder |
| CN103603975B (en) * | 2013-11-26 | 2015-10-28 | 湖南特力液压有限公司 | Multistage hydraulic cylinder |
| CN103939412A (en) * | 2014-05-05 | 2014-07-23 | 湘潭大学 | Rubbish transfer station compression oil cylinder and hydraulic control device of rubbish transfer station compression oil cylinder |
| CN104047622A (en) * | 2014-06-09 | 2014-09-17 | 大连宏远气动液压船舶辅机有限公司 | Double-telescoping stand column of hydraulic support |
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