CN201330612Y - Double-action plunger suspending type upright post for hydraulic support - Google Patents
Double-action plunger suspending type upright post for hydraulic support Download PDFInfo
- Publication number
- CN201330612Y CN201330612Y CNU2009200385827U CN200920038582U CN201330612Y CN 201330612 Y CN201330612 Y CN 201330612Y CN U2009200385827 U CNU2009200385827 U CN U2009200385827U CN 200920038582 U CN200920038582 U CN 200920038582U CN 201330612 Y CN201330612 Y CN 201330612Y
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- upright post
- post
- cylinder
- cylinder body
- column
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Abstract
The utility model discloses a double-action plunger suspending type upright post for hydraulic support, the traditional plunger type hydraulic upright post has only one function of lifting the upright post, according to the utility model, an upright post-lowing pipe junction is fixed on the upper part of the outside of the cylinder, one end of the upright post-lowing pipe junction is connected with an upright post-lowing liquid feeding system by a one-way valve and an oil pipe, the other end of the upright post-lowing pipe junction is communicated with the clearance between the cylinder and the movable upright post by a liquid transporting hole I; a one-way seal ring and a fluid-control direction valve are arranged on the lower end of the movable column. When the upright post is lifted, the high pressure medium can be injected to the cylinder inner cavity by the upright post-lifting pipe junction. When the upright post is lowered, the high pressure medium can be injected into the clearance between the cylinder and the movable upright post by the upright post-lowing pipe junction to push the movable upright post to move down quickly. The one-way seal ring can only act when lowering, even if the seal part is leaked lightly, without influencing the lowering speed, so that the requirements of the dimensional precision and the roughness of the cylinder inner hole are not high, the machining difficulty of the cylinder inner hole can be reduced. The cylinder can be longer by being manufactured, thereby improving the supporting height of the upright post, so that the application is wide.
Description
Technical field
The utility model relates to a kind of mining equiment, is specifically related to face timbering under the coal mine with the hydraulic prop that uses on the hydraulic support, play supporting usefulness.
Background technology
Hydraulic support is the crucial support apparatus of groundwork face under the coal mine, and it is made up of load assembly and executive component.Hydraulic prop is the main executive component of hydraulic support, is used to bear top board load, regulates supporting height.Traditional hydraulic prop is floated hydraulic prop, and this pillar is made up of live post, oil cylinder, piston, seal etc., and sliding at cylinder bore by the seal on the piston forms the sealing of medium.This kind encapsulating method is had relatively high expectations to the accurate to dimension and the surface roughness of cylinder bore, and working (machining) efficiency is lower, the manufacturing cost height.Therefore, the length limited system of this oil cylinder, the while is also limited the supporting height of pillar.For addressing this problem, extension bar is installed on the post of living at present or is adopted two telescopic hydraulic cylinders to solve manufacturing process complexity, cost height.
No matter traditional hydraulic prop is top fluid injection or middle part fluid injection, its liquid injection hole all has only one, when setting prop, inject high-pressure medium, can only utilize the live effect of post deadweight and prop drawing spring of post alive and fall the post backstroke, it is slow to fall post speed, influence face propulsion speed, on hydraulic support, use and be very limited.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of hydraulic support double-action plunger floated column, the column jecket joint falls in the setting of the top of cylinder body, the bottom is provided with the setting prop union, hydraulic control system is set outside machine, inject high-pressure medium by the setting prop union to inner chamber of cylinder block during setting prop, for setting prop and supporting provide power.Inject high-pressure medium by falling the gap portion of column jecket joint between cylinder body and post alive when falling post, the post that promotes to live moves down fast.Cylinder body has also been done change with the sealing means of the post of living, and during setting prop, seals good sealing effect by cylinder cover by the sealing ring and the post cylinder of living; When falling post, by being installed in one-way sealing circle on the joint and inboard wall of cylinder block sealing under the post alive.Hydraulic control system is setting prop and falls post fluid injection respectively, this system comprises: setting prop union, the infusion pipeline that falls column jecket joint, one way valve, pilot operated directional control valve, hydraulic control one-way valve, safety valve and be correlated with, all unions, valve body and pipeline all are arranged on the outside of pillar, installation, easy to adjust.
The utility model is achieved by the following technical solution: the floated column of a kind of hydraulic support double-action plunger, comprise: the post of living, the top cover that is installed in post alive upper end, cylinder body, the base that is arranged on the cylinder body lower end, the cylinder cover that is arranged on the cylinder body upper end that are connected with the post of living, be arranged on sealing ring I, guide ring, dust ring between cylinder cover and the post alive, the bottom outside cylinder body is the setting prop union fixedly; Described setting prop union one end is connected with the setting prop liquid-supplying system with oil pipe by hydraulic control one-way valve, and the other end is connected with base by woven hose and connects with inner chamber of cylinder block; It is characterized in that: the column jecket joint fixedly falls in the top in the cylinder body outside, described fall column jecket joint one end by one way valve and oil pipe with fall the post liquid-supplying system and be connected, the other end passes through the gap perforation between infusion hole I and cylinder body and the work post; Described setting prop, fall the post liquid-supplying system and comprise: one way valve, hydraulic control direction valve, hydraulic control one-way valve, safety valve and the oil pipe that is connected; All valve body and oil pipe all are arranged on the outside of column.
Described post alive lower end is provided with joint under the post alive, and the post of living saves down and is tubular, and its external cylindrical surface is connected with inboard wall of cylinder block by one-way sealing circle, guide ring.
Described one-way sealing circle is the y RunddichtringO, and its opening upwards.
Described one-way sealing circle is installed in by the technology ring and saves under the post alive.
Good effect of the present utility model is:
1, traditional plunger hydraulic pillar has only single setting prop function, can only lean on gravity and return spring when falling post, and it is slow to fall post speed, can't be used on the hydraulic support.The utility model has increased the fluid pressure drop post, and it is fast to fall post speed, removes the post high efficiency, has remarkable economic efficiency
2, because cylinder inner bore dimensional accuracy and surface roughness are less demanding, reduce the difficulty of the boring of cylinder block, can make longer cylinder body, the stroke of column is increased considerably, need not just to can be used on the hydraulic support, as executive component with addition of stock or use double-telescopic upright post.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the utility model hydraulic control schematic diagram;
Among the figure: 1, top cover, 2, cylinder cover, 2-1, infusion hole I, 3, sealing ring I, 4, the column jecket joint falls, 5, sealing ring II, 6, cylinder body, 7, the post of living, 8, setting prop union, 9, woven hose, 10, the post joint down of living, 11, one-way sealing circle, 12, base, 13, the technology ring, 14, guide ring, 15, dust ring, 16, the hydraulic control direction valve, 17, one way valve, 18, hydraulic control one-way valve, 19, safety valve.
The specific embodiment
As shown in Figure 1 and Figure 2: the floated column of a kind of hydraulic support double-action plunger, comprise: the post 7 of living, the top cover 1 that is installed in post alive 7 upper ends, cylinder body 6, the base 12 that is arranged on cylinder body 6 lower ends, the cylinder cover 2 that is arranged on cylinder body 6 upper ends that are connected with the post 7 of living, be arranged on sealing ring I 3, guide ring 14, dust ring 15 between cylinder cover 2 and the work post 7, fixing setting prop union 8 in the bottom in cylinder body 6 outsides; Described setting prop union 8 one ends are connected with the setting prop liquid-supplying system with oil pipe by hydraulic control one-way valve 18, and the other end is connected with base 12 by woven hose 9 and connects with cylinder body 6 inner chambers.
Described post alive 7 lower ends are provided with joint 10 under the post alive, and the post of living joint 10 down is a tubular, and external cylindrical surface is connected with cylinder body 6 inwalls by one-way sealing circle 11, guide ring 14.
During setting prop, the high-pressure medium in the setting prop oil supply system enters cylinder body 6 bottoms by hydraulic control one-way valve 18 and hydraulic control direction valve 16, and the post 7 that promotes to live is up, realizes the effect of setting prop, support.Simultaneously, high-pressure medium is opened hydraulic control direction valve 16, and one-way sealing circle 11 does not seal at this moment, and cylinder body 6 and the gap and the cylinder body 6 of living between the post 7 connect, and make the setting prop non-resistance.
When falling post, fall that high-pressure medium in the post oil supply system enters cylinder body 6 by one way valve 17 and the post 7 of living between the gap, under the effect of one-way sealing circle 11, the post 7 of living is descending.Simultaneously, high-pressure medium is opened hydraulic control direction valve 16 and hydraulic control one-way valve 18, makes the medium in the cylinder body 6 get back to fuel tank by hydraulic control direction valve 16, hydraulic control one-way valve 18 and oil pipe, realizes fast prompt drop post.Do not need return spring, just can improve the post speed of falling, shortened greatly and removed the post time, increase work efficiency, help safety in production yet.
Described one-way sealing circle 11 is the y RunddichtringO, and its opening upwards and is installed in post alive under by technology ring 13 and saves on 10.11 on one-way sealing circle just plays sealing function when falling post, reach requirement and get final product because only need fall post speed when falling post, even there is slight leakage at the sealing position, also can not influence the post speed of falling.So less demanding to cylinder inner bore dimensional accuracy and roughness, reduce the difficulty that cylinder inner bore is processed.Cylinder body can be made longer, improves the supporting height of pillar, uses more extensive.
Claims (4)
1, the floated column of a kind of hydraulic support double-action plunger, comprise: the post (7) of living, the top cover (1) that is installed in post alive (7) upper end, cylinder body (6), the base (12) that is arranged on cylinder body (6) lower end, the cylinder cover (2) that is arranged on cylinder body (6) upper end that are connected with the post (7) of living, be arranged on sealing ring I (3), guide ring (14), dust ring (15) between cylinder cover (2) and the post alive (7), the bottom outside cylinder body (6) is setting prop union (8) fixedly; Described setting prop union (8) one ends are connected with the setting prop liquid-supplying system with oil pipe by hydraulic control one-way valve (18), and the other end is connected with base (12) by woven hose (9) and connects with cylinder body (6) inner chamber; It is characterized in that: column jecket joint (4) fixedly falls in the top in cylinder body (6) outside, described fall column jecket joint (4) one ends by one way valve (17) and oil pipe with fall the post liquid-supplying system and be connected, the other end is by the gap perforation between infusion hole I (2-1) and cylinder body (6) and the work post (7); Described setting prop, fall the post liquid-supplying system and comprise: one way valve (17), hydraulic control direction valve (16), hydraulic control one-way valve (18), safety valve (19) and the oil pipe that is connected; All valve body and oil pipe all are arranged on the outside of column.
2, the floated column of hydraulic support double-action plunger according to claim 1, it is characterized in that: described post alive (7) lower end is provided with joint (10) under the post alive, the post of living joint (10) down is a tubular, and external cylindrical surface is connected with cylinder body (6) inwall by one-way sealing circle (11), guide ring (14).
3, the floated column of hydraulic support double-action plunger according to claim 2 is characterized in that: described one-way sealing circle (11) is the y RunddichtringO, and its opening upwards.
4, the floated column of hydraulic support double-action plunger according to claim 2 is characterized in that: described one-way sealing circle (11) is installed under the post alive by technology ring (13) and saves on (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200385827U CN201330612Y (en) | 2009-01-07 | 2009-01-07 | Double-action plunger suspending type upright post for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200385827U CN201330612Y (en) | 2009-01-07 | 2009-01-07 | Double-action plunger suspending type upright post for hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330612Y true CN201330612Y (en) | 2009-10-21 |
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ID=41223990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200385827U Expired - Fee Related CN201330612Y (en) | 2009-01-07 | 2009-01-07 | Double-action plunger suspending type upright post for hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330612Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244152A (en) * | 2013-05-15 | 2013-08-14 | 淮南郑煤机舜立机械有限公司 | Hydraulic prop |
| CN103291333A (en) * | 2013-05-27 | 2013-09-11 | 武文成 | Hydraulic support column double-liquid-injection system |
-
2009
- 2009-01-07 CN CNU2009200385827U patent/CN201330612Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244152A (en) * | 2013-05-15 | 2013-08-14 | 淮南郑煤机舜立机械有限公司 | Hydraulic prop |
| CN103291333A (en) * | 2013-05-27 | 2013-09-11 | 武文成 | Hydraulic support column double-liquid-injection system |
| CN103291333B (en) * | 2013-05-27 | 2016-01-20 | 武文成 | A kind of hydraulic support column double-liquid-injectsystem system |
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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: 20091021 Termination date: 20110107 |