CN203603937U - Double-telescopic column for hydraulic support - Google Patents
Double-telescopic column for hydraulic support Download PDFInfo
- Publication number
- CN203603937U CN203603937U CN201320785540.6U CN201320785540U CN203603937U CN 203603937 U CN203603937 U CN 203603937U CN 201320785540 U CN201320785540 U CN 201320785540U CN 203603937 U CN203603937 U CN 203603937U
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- Prior art keywords
- cylinder
- cylinder body
- primary
- double
- telescopic column
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000003245 coal Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000000839 emulsion Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 101100532451 Rattus norvegicus Slc22a17 gene Proteins 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a double-telescopic column for a hydraulic support. The double-telescopic column comprises a primary cylinder and a secondary cylinder, the secondary cylinder is arranged in the primary cylinder through a first guide sleeve in a sealing and sliding mode, and a plunger is arranged in the secondary cylinder through a second guide sleeve in a sealing and sliding mode. A hydraulic control valve communicating a lower cavity of the primary cylinder and a lower cavity of the secondary cavity is arranged on the bottom wall of the secondary cylinder. A primary flow channel communicating an upper cavity of the primary cylinder and the lower cavity of the primary cylinder is formed in the side wall of the primary cylinder in the longitudinal direction. A secondary flow channel communicating the upper cavity of the primary cylinder and an upper cavity of the secondary cylinder is formed in the side wall of the secondary cylinder in the longitudinal direction. The double-telescopic column has the advantages that liquid is injected into the primary cylinder and the secondary cylinder from the cylinder walls, liquid injection holes are drilled in the primary cylinder and the secondary cylinder, liquid inlet and liquid return are achieved through the primary flow channel and the secondary flow channel, and a liquid communicating mode of an existing telescopic column is changed, so that the structure is simpler, more compact and more attractive and space is saved; especially for a thin coal seam support, more convenience is brought for support design and hydraulic system arrangement.
Description
Technical field
The utility model relates to hydraulic support, especially relates to hydraulic support double-telescopic upright post.
Background technology
Hydraulic support is fully-mechanized mining working visual plant, and telescopic column is hydraulic support vitals.At present, three kinds of forms that the hydraulic support column using in coal mining has: single telescopic column, single flexible machinery lengthen column, double-telescopic upright post.Wherein double-telescopic upright post magnification maximum, can meet the demand in most collieries.But, existing double-telescopic upright post, cylinder body is welded with plinth, fluid-through tube, control valve seat, not only accounts for the standoff usefull space, and the layout of hydraulic system has been brought to great difficulty.Particularly, for Bracket in Thin Coal Seam, the form of structure of column, affects larger on the design of whole support.
Summary of the invention
The utility model object is to provide a kind of hydraulic support double-telescopic upright post of simple in structure, dependable performance.
For achieving the above object, the utility model is taked following technical proposals:
Hydraulic support double-telescopic upright post described in the utility model, comprises one-level cylinder body, is slidably arranged in the secondary cylinder body in described one-level cylinder body by the first fairlead sealing, in described secondary cylinder body, is slided and is provided with post alive by the second fairlead sealing; The diapire of secondary cylinder body is provided with the pilot operated valve device that is communicated with I and II cylinder body cavity of resorption; In the sidewall of one-level cylinder body, longitudinally offer the one-level runner that is communicated with the upper and lower chamber of one-level cylinder body; In secondary cylinder body sidewall, longitudinally offer the secondary runner that is communicated with I and II cylinder body epicoele.
The utility model advantage is to carry out fluid injection in one-level cylinder body and secondary cylinder body employing casing wall, in I and II cylinder body, beats liquid injection hole, is entered, is returned liquid by described I and II runner, has changed the logical liquid mode of existing double-telescopic upright post; Compared with traditional double-telescopic upright post, cylinder body outside no longer includes the welding assemblies such as plinth, fluid-through tube, guard shield, therefore there will not be traditional two flexible cylinder body weld seam leakage accident, has reduced the fault rate of column; And cancelled the fluid-through port of plunger end portion, so just need not arrange into, return liquid joint, in use procedure, column connects no longer separately high-pressure rubber pipe, makes structure more simple, compact, attractive in appearance, has saved space.For Bracket in Thin Coal Seam, the design to support and hydraulic system are arranged and have been brought larger convenience especially.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the I portion structure for amplifying schematic diagram of Fig. 1.
The specific embodiment
As shown in Figure 1, 2, hydraulic support double-telescopic upright post described in the utility model, comprise one-level cylinder body 1, be arranged on the secondary cylinder body 3 in described one-level cylinder body 1 by the first fairlead 2 slipper seals, in described secondary cylinder body 3, be arranged on post 5 alive by the second fairlead 4 slipper seals; The diapire of secondary cylinder body 3 is provided with the pilot operated valve device 10 that is communicated with I and II cylinder body cavity of resorption 6,8; In the sidewall of one-level cylinder body 1, longitudinally offer 11 3 of one-level runners that are communicated with the upper and lower chamber 7,6 of one-level cylinder body, wherein 6 one logical epicoeles 7 of two logical cavity of resorptions; In secondary cylinder body 3 sidewalls, longitudinally offer the secondary runner 12 that is communicated with I and II cylinder body epicoele 7,9.
The utility model operating principle is summarized as follows:
1, setting prop: emulsion enters in one-level cylinder body cavity of resorption 6 by the one-level runner 11 on one-level cylinder body 1 outer wall, promoting secondary cylinder body 3 drives piston boit 5 to rise together, secondary cylinder body 3 is raised to extreme higher position to be stopped, pilot operated valve device 10 is opened, emulsion enters in secondary cylinder body cavity of resorption 8, the post 5 that promotes to live rises to extreme higher position to be stopped, and whole column uphill process finishes.
2, post falls: emulsion enters one-level cylinder body epicoele 7 by the one-level runner 11 on one-level cylinder body 1 outer wall, 6 times liquid of one-level cylinder body cavity of resorption, now pilot operated valve device 10 is in closed condition, emulsion promotes secondary cylinder body 3 and drives the post 5 of living to decline, when secondary cylinder body 5 is down to position, the end, pilot operated valve device 10 is opened, the emulsion post 5 that promotes to live declines, and is down to the whole column in position, the end falls post process and finish when the post 5 of living.
Claims (1)
1. a hydraulic support double-telescopic upright post, comprise one-level cylinder body (1), be slidably arranged in the secondary cylinder body (3) in described one-level cylinder body (1) by the first fairlead (2) sealing, it is characterized in that: in described secondary cylinder body (3), slide and be provided with post alive (5) by the second fairlead (4) sealing; The diapire of secondary cylinder body (3) is provided with the pilot operated valve device (10) that is communicated with I and II cylinder body cavity of resorption (6,8); In the sidewall of one-level cylinder body (1), longitudinally offer the one-level runner (11) that is communicated with the upper and lower chamber of one-level cylinder body (7,6); In secondary cylinder body (3) sidewall, longitudinally offer the secondary runner (12) that is communicated with I and II cylinder body epicoele (7,9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785540.6U CN203603937U (en) | 2013-12-04 | 2013-12-04 | Double-telescopic column for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785540.6U CN203603937U (en) | 2013-12-04 | 2013-12-04 | Double-telescopic column for hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603937U true CN203603937U (en) | 2014-05-21 |
Family
ID=50716614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320785540.6U Expired - Lifetime CN203603937U (en) | 2013-12-04 | 2013-12-04 | Double-telescopic column for hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643947A (en) * | 2018-04-26 | 2018-10-12 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
-
2013
- 2013-12-04 CN CN201320785540.6U patent/CN203603937U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643947A (en) * | 2018-04-26 | 2018-10-12 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
| CN108643947B (en) * | 2018-04-26 | 2019-07-02 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |