CN86209751U - Plunger hydraulic pit prop - Google Patents
Plunger hydraulic pit prop Download PDFInfo
- Publication number
- CN86209751U CN86209751U CN 86209751 CN86209751U CN86209751U CN 86209751 U CN86209751 U CN 86209751U CN 86209751 CN86209751 CN 86209751 CN 86209751 U CN86209751 U CN 86209751U CN 86209751 U CN86209751 U CN 86209751U
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- China
- Prior art keywords
- post
- living
- hydraulic prop
- hydraulic
- triple
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model, aiming at hydraulic props a large quantity of which are used under holes of mines, improves and strengthens the surface rationalizing performance on the basis of improving the integral strength of a moving column, making the hydraulic props anti-corroding and anti-collision. A wedge-shaped sealing device and the technologies of glow light ion co-permeation, cold arc cathode ion plating, isomerism three-layer chromium electrical plating, cold extruding process, etc are adopted. Hence, a new method is provided to the hydraulic support devices used for mines of general mining, high grade general mining, and blast mining.
Description
The design belongs to down-hole, mine roof timbering with equipping.
Domestic a large amount of in recent years outside injection type hydraulic pillar of using of producing is the piston hydraulic cylinder structure, the necessary fine finishining of its cylinder body, and the post of living then need weld column cap and lengthening tube, thereby complex process, and cost is very high, and weight is also bigger.Particularly the welding position weak strength is easily curved easily broken.When adopting more than 2.2 meters height, operating difficulties is fairly obvious.
The design's purpose is to simplify the structure and the processing technology of hydraulic prop, to improve complete machine intensity, improves functional performance, reduces manufacturing cost, and weight reduction enlarges range of application.
The design's structure as shown in Figure 1, mainly by top cover (1), the post (2) of living, handgrip body or cylinder mouth guide pin bushing (3), wedge type sealing device (4), triple-use valve (5), cylinder body (6), aperture compositions such as (7).
The structural principle of plunger type hydraulic prop is as follows:
The pressure liquid that is come by pumping plant at first enters triple-use valve (5) by fluid injection interface (being commonly called as fluid injection gun), the annular gap of passage through live post (2) and cylinder body (6) from handgrip body or cylinder mouth guide pin bushing (3) flow in post alive and the cylinder body then, thereby make post alive and cylinder body overcome frictional force and other resistances of wedge type sealing device (4), the motion of generation setting prop, reach in cylinder till the pump pressure, this moment, pillar promptly had initial support power.When carrying increasing (as roof weighting) outside the top, the liquid in the pillar improves pressure by compression, and during set pressure for safety valve in reaching triple-use valve, pillar is promptly born yield load, and constant-resistance descends under this pressure.Simultaneously, excess liquid is then gone out by the safety valve overflow in the cylinder.It is the flow direction by opposite with setting prop that the falling of pillar contracted, with liquid in the cylinder outside triple-use valve is discharged pillar.
Plunger hydraulic pillar or the plunger hydraulic oil cylinder of use on support apparatus such as hydraulic support also adopts the said structure principle.
The design's main feature:
1, the post of living is whole tubular construction, has fully phased out to triple-use valve is installed and has been welded on the column cap structure of post alive upper end, and be welded on lengthening tube on the column cap for increasing pillar.
2, the live moulding of post and material handled, and according to different needs, can adopt:
(1) after the modified heat treatment of hot rolled seamless steel tube, carries out surface high frequency quenching or surface laser quenching or surface plasma again and quench.
(2) directly adopt cold rolling or accurate solid drawn tube.
(3) spinning or cold extruding formation process.
(4) electroslag casting moulding.
4, the wedge type sealing device of the Cai Yonging (patent No.: 85207346) be installed in handgrip body or the cylinder mouth guide pin bushing, as movable sealing face, rely on the flexible plunger-type structure that carries out work of the post of living with the outer surface of column of living.Thereby reduce the machining accuracy and the manufacturing cost of cylinder body, give full play to the effect of post alive.
5, triple-use valve She Ji And is installed on the handgrip body, rod structure alive is simplified.Simultaneously, because the position is suitable, make fluid injection, unloading etc. need the action of frequent operation triple-use valve more convenient.
6, utilize the aperture (7) on the post jamb of living to carry out stroke limit, it is spacing to replace spacing ring or step, makes post total length alive not have step, can directly process on centerless grinder, raises the efficiency, and reduces cost.
7, when adopting spinning or cold extruding formation process manufacturing to live post and cylinder body, as shown in Figure 1, cylinder body is the company's of being processed into bottom structure directly, thereby has cancelled base, and the post of living is processed into and connects bottom structure, has then simplified cap structure.Above-mentioned two all make pillar weight saving, and cost reduces.
8, live wear-resisting, corrosion-resistant and anti-the pounding on post surface bumped, impacted, and realizes by following several technologies:
(1) glow ion oozes multicomponent alloy altogether; (2) cold plasma cathode ion plating; (3) three layers of chromium of isomerism are electroplated; (4) plasma spraying makes the surperficial surface peening of answering with the metal or alloy with above-mentioned performance of post alive, anticorrosive technology.
The design is suitable for hydraulic support column, jack etc. equally toward multiplexing hydraulic cylinder.
Claims (5)
1, the hydraulic prop that is used for down-hole, mine roof timbering, mainly by top cover [1], the post [2] of living, handgrip body [3], wedge type sealing device [4], triple-use valve [5], cylinder body [6], aperture compositions such as [7], it is characterized in that, the post of living is whole tubular, during work with the outer surface of column of living as movable sealing face, rely on the flexible plunger-type structure that carries out work of the post of living.
2, hydraulic prop as claimed in claim 1 is characterized in that, adopts the wedge type sealing device to be installed in handgrip body or the interior structure of cylinder mouth guide pin bushing.
3, hydraulic prop as claimed in claim 1 is characterized by, and triple-use valve is mounted on the handgrip body.
4, hydraulic prop as claimed in claim 1 is characterized by, and live post and cylinder body directly are processed into the band bottom structure.
5, hydraulic prop as claimed in claim 1 is characterized by, and the structure of aperture is opened in the spacing employing of the post of living on the post jamb of living.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209751 CN86209751U (en) | 1986-11-30 | 1986-11-30 | Plunger hydraulic pit prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209751 CN86209751U (en) | 1986-11-30 | 1986-11-30 | Plunger hydraulic pit prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86209751U true CN86209751U (en) | 1988-07-06 |
Family
ID=4811580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86209751 Withdrawn CN86209751U (en) | 1986-11-30 | 1986-11-30 | Plunger hydraulic pit prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86209751U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884668A (en) * | 2017-03-14 | 2017-06-23 | 苏州蓝王机床工具科技有限公司 | A kind of structure of hydraulic pressure breaking-off timber |
| CN107246277A (en) * | 2017-07-28 | 2017-10-13 | 郑州煤矿机械集团股份有限公司 | High life friction pair hydraulic support |
| CN108194113A (en) * | 2017-12-12 | 2018-06-22 | 昆山中士设备工业有限公司 | A kind of hydraulic prop for mine and its manufacturing method |
-
1986
- 1986-11-30 CN CN 86209751 patent/CN86209751U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884668A (en) * | 2017-03-14 | 2017-06-23 | 苏州蓝王机床工具科技有限公司 | A kind of structure of hydraulic pressure breaking-off timber |
| CN107246277A (en) * | 2017-07-28 | 2017-10-13 | 郑州煤矿机械集团股份有限公司 | High life friction pair hydraulic support |
| CN108194113A (en) * | 2017-12-12 | 2018-06-22 | 昆山中士设备工业有限公司 | A kind of hydraulic prop for mine and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |