CN104863918A - Pushing device for tail beam of hydraulic support - Google Patents
Pushing device for tail beam of hydraulic support Download PDFInfo
- Publication number
- CN104863918A CN104863918A CN201510030134.2A CN201510030134A CN104863918A CN 104863918 A CN104863918 A CN 104863918A CN 201510030134 A CN201510030134 A CN 201510030134A CN 104863918 A CN104863918 A CN 104863918A
- Authority
- CN
- China
- Prior art keywords
- hole
- cylinder barrel
- piston
- piston rod
- stop collar
- Prior art date
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000000428 dust Substances 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Actuator (AREA)
Abstract
The invention discloses a pushing device for a tail beam of a hydraulic support. A penetrating through cavity is formed in a cylinder barrel; a first through hole and a second through hole are formed in the side wall of the cylinder barrel; a first connector base and a second connector base are respectively arranged at the first through hole and the second through hole; a cylinder cover is welded at the end, close to the first through hole, of the cylinder barrel; the end, provided with a piston, of a piston rod extends into the penetrating through cavity from the other end of the cylinder barrel; the piston is located between the first through hole and the second through hole; a stop collar fixed in a sleeve is arranged outside the piston rod and located on the side, far away from the first through hole, of the second through hole; a first sealing part is arranged between the piston and the cylinder barrel; a second sealing part is arranged between the stop collar and the piston rod. The optimally designed pushing device for the tail beam of the hydraulic support is compact in integral structure and stable and reliable; a working medium flowing space in the cylinder barrel is reasonable in design; owing to reasonable arrangement of the sealing parts between all components, the sealing effect is greatly improved and the service life of a seal ring is prolonged.
Description
Technical field
The present invention relates to hydraulic support technical field, particularly relate to a kind of hydraulic support tail boom pushing device.
Background technique
Hydraulic support is the important component part of winning equipment, is used for controlling the mine pressure of face.The top board of working surface can reliably and effectively be made and control to hydraulic support, and isolation goaf, prevents spoil from entering actual mining region, affect the normal work of mining device, and the life safety of safeguard work personnel to greatest extent.Tail boom is the important composition of hydraulic support, in hydraulic support working procedure, plays main support effect, ensures and produces and life safety.Tail boom needs to move according to Environmental Conditions in the course of the work, and therefore have high requirement to the mobile mechanism of tail boom, it has material impact to the stressed of whole support and stability.
Summary of the invention
For solving the technical problem existed in background technique, the present invention proposes a kind of hydraulic support tail boom pushing device, reasonable in design, has overall structure, and working stability is reliable, and sealability is excellent.
A kind of hydraulic support tail boom pushing device that the present invention proposes, comprising: cylinder cap, cylinder barrel, piston assembly;
Cylinder barrel inside has runs through cavity and two ends have opening, cylinder barrel sidewall is provided with the first through hole and the second through hole, first through hole and the second through hole are arranged at cylinder barrel axially spaced-apart, the first connection block is provided with in the first through hole, first connection block by the first through hole with run through cavity and be communicated with, be provided with the second connection block in the second through hole, the second connection block by the second through hole with run through cavity and be communicated with;
Piston assembly comprises piston rod, piston and stop collar, what piston rod was positioned at cylinder barrel runs through cavity, and one end is stretched out from the opening of cylinder barrel near one end of the second through hole, piston rod is positioned at the outside one end of cylinder barrel and is provided with supporting portion, piston is fixed on the sidewall of piston rod, the first back-up ring is provided with between piston and piston rod, piston cylinder barrel to run through in cavity and between the first through hole and the second through hole, the first Sealing is provided with between piston and inner wall of cylinder, stop collar is enclosed within piston rod outside, its one end away from piston is provided with fixing part, stop collar is positioned at cylinder barrel and is fixed by fixing part and cylinder barrel, stop collar is positioned at the side of the second through hole away from the first through hole, the second Sealing is provided with between stop collar and piston rod, the second back-up ring and static seal is provided with between stop collar and inner wall of cylinder,
Cylinder cap sealing is fixed on cylinder barrel one end near the first through hole;
Cylinder cap is L1 to the distance of stop collar, and the 2-2.5 of internal diameter of cylinder to be L2, L1 be L2 doubly.
Preferably, the first Sealing comprises piston seal assembly and is positioned at two outer guide rings of piston seal assembly both sides.
Preferably, the second Sealing comprises flower bud shape seal ring and is positioned at the guide ring of flower bud shape seal ring both sides.
Preferably, be also provided with dust ring between stop collar and piston rod, dust ring is arranged near supporting portion.
Preferably, cylinder cap is welded and fixed the end of cylinder barrel.
In the present invention, the hydraulic support tail boom pushing device proposed, cylinder barrel inside has runs through cavity, cylinder barrel sidewall is provided with the first through hole and the second through hole, the first connection block is provided with in the first through hole, the second connection block is provided with in the second through hole, cylinder barrel is near first through hole one end welding cylinder cap, one end that piston rod is provided with piston is stretched into from the cylinder barrel the other end and is run through in cavity, piston is between the first through hole and the second through hole, piston rod is positioned at the outside one end of cylinder barrel and is provided with supporting portion, piston rod outside is provided with stop collar, stop collar is fixed in sleeve, it is positioned at the second through hole away from the first through hole side, the first Sealing is provided with between piston and cylinder barrel, the second Sealing is provided with between stop collar and piston rod.By the hydraulic support tail boom pushing device of above-mentioned optimal design, compact overall structure, be easy to processing, in cylinder barrel, working media flow spatial design is reasonable, in Reusability process, mechanical structure is reliable and stable, static seal is increased between stop collar and cylinder barrel, and each parts adopt seal ring and respectively establish in seal ring both sides a guide ring to seal, greatly improve sealing effect, and extend the working life of seal ring, working medium does not leak, and also can prevent external dust impurity from entering in cylinder barrel and cause damage to each parts.
Embodiment
A kind of hydraulic support tail boom pushing device that the present invention proposes, comprising: cylinder cap, cylinder barrel, piston assembly;
Cylinder barrel inside has runs through cavity and two ends have opening, cylinder barrel sidewall is provided with the first through hole and the second through hole, first through hole and the second through hole are arranged at cylinder barrel axially spaced-apart, the first connection block is provided with in the first through hole, first connection block by the first through hole with run through cavity and be communicated with, be provided with the second connection block in the second through hole, the second connection block by the second through hole with run through cavity and be communicated with;
Piston assembly comprises piston rod, piston and stop collar, what piston rod was positioned at cylinder barrel runs through cavity, and one end is stretched out from the opening of cylinder barrel near one end of the second through hole, piston rod is positioned at the outside one end of cylinder barrel and is provided with supporting portion, piston is fixed on the sidewall of piston rod, the first back-up ring is provided with between piston and piston rod, piston cylinder barrel to run through in cavity and between the first through hole and the second through hole, the first Sealing is provided with between piston and inner wall of cylinder, first Sealing comprises piston seal assembly and is positioned at two outer guide rings of piston seal assembly both sides, stop collar is enclosed within piston rod outside, its one end away from piston is provided with fixing part, stop collar is positioned at cylinder barrel and is fixed by fixing part and cylinder barrel, stop collar is positioned at the side of the second through hole away from the first through hole, the second Sealing is provided with between stop collar and piston rod, second Sealing comprises flower bud shape seal ring and is positioned at the guide ring of flower bud shape seal ring both sides, the second back-up ring and static seal is provided with between stop collar and inner wall of cylinder, also dust ring is provided with between stop collar and piston rod, dust ring is arranged near supporting portion,
Cylinder cap sealing is fixed on cylinder barrel one end near the first through hole.
In specific design, cylinder cap is L1 to the distance of stop collar, and the 2-2.5 of internal diameter of cylinder to be L2, L1 be L2 doubly.
In the hydraulic support tail boom pushing device working procedure of the present embodiment, when working medium flows into cylinder barrel from the first connection block, when working medium enters the space between piston and cylinder cap, promote cylinder cap to move to away from piston direction, working medium simultaneously between piston and stop collar flows out from the second connection block, thus band moveable cylinder moves to the direction, supporting portion away from piston rod, carry out promotion stroke, when working medium flows into cylinder barrel from the second connection block, when working medium enters the space between piston and stop collar, promote piston to move to cylinder cap direction, working medium simultaneously between piston and cylinder cap flows out from the first connection block, thus drive piston rod to advance to cylinder cap direction, carry out return stroke, realize hydraulic drive working procedure.
In the present embodiment, the hydraulic support tail boom pushing device proposed, cylinder barrel inside has runs through cavity, cylinder barrel sidewall is provided with the first through hole and the second through hole, the first connection block is provided with in the first through hole, the second connection block is provided with in the second through hole, cylinder barrel is near first through hole one end welding cylinder cap, one end that piston rod is provided with piston is stretched into from the cylinder barrel the other end and is run through in cavity, piston is between the first through hole and the second through hole, piston rod is positioned at the outside one end of cylinder barrel and is provided with supporting portion, piston rod outside is provided with stop collar, stop collar is fixed in sleeve, it is positioned at the second through hole away from the first through hole side, the first Sealing is provided with between piston and cylinder barrel, the second Sealing is provided with between stop collar and piston rod.By the hydraulic support tail boom pushing device of above-mentioned optimal design, compact overall structure, be easy to processing, in cylinder barrel, working media flow spatial design is reasonable, in Reusability process, mechanical structure is reliable and stable, static seal is increased between stop collar and cylinder barrel, and each parts adopt seal ring and respectively establish in seal ring both sides a guide ring to seal, greatly improve sealing effect, and extend the working life of seal ring, working medium does not leak, and also can prevent external dust impurity from entering in cylinder barrel and cause damage to each parts.
In a specific embodiment, the tail boom pushing device internal diameter of cylinder of the present embodiment is 160mm, piston rod footpath is 105mm, piston stroke is 250mm, after testing, in its working procedure, cylinder barrel internal pressure can reach 31.5Mpa, thrust can reach 633.34KN, and pulling force can reach 360.58KN, uses after testing and still has good sealing effect 30000-60000 time.
Between each parts, all Sealing is set, greatly improves sealability, ensure that in working procedure, working medium does not leak, ensure that pushing device internal work environment is reliable.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. a hydraulic support tail boom pushing device, is characterized in that, comprising: cylinder cap (1), cylinder barrel (2), piston assembly;
Cylinder barrel (2) inside has runs through cavity and two ends have opening, cylinder barrel (2) sidewall is provided with the first through hole and the second through hole, first through hole and the second through hole are arranged at cylinder barrel (2) axially spaced-apart, the first connection block (21) is provided with in the first through hole, first connection block (21) by the first through hole with run through cavity and be communicated with, be provided with the second connection block (22) in the second through hole, the second connection block (22) by the second through hole with run through cavity and be communicated with;
Piston assembly comprises piston rod (4), piston (3) and stop collar (5), what piston rod (4) was positioned at cylinder barrel (2) runs through cavity, and one end is stretched out from the opening of one end of close second through hole of cylinder barrel (2), piston rod (4) is positioned at cylinder barrel (2) outside one end and is provided with supporting portion (41), piston (3) is fixed on the sidewall of piston rod (4), the first back-up ring (61) is provided with between piston (3) and piston rod (4), piston (3) be positioned at cylinder barrel (2) run through cavity and between the first through hole and the second through hole, the first Sealing is provided with between piston (3) and cylinder barrel (2) inwall, it is outside that stop collar (5) is enclosed within piston rod (4), its one end away from piston (3) is provided with fixing part, stop collar (5) is positioned at cylinder barrel (2) and is fixed by fixing part and cylinder barrel (2), stop collar (5) is positioned at the side of the second through hole away from the first through hole, the second Sealing is provided with between stop collar (5) and piston rod (4), the second back-up ring (62) and static seal (91) is provided with between stop collar (5) and cylinder barrel (2) inwall,
Cylinder cap (1) sealing is fixed on cylinder barrel (2) one end near the first through hole;
Cylinder cap (1) is L1 to the distance of stop collar (5), and the 2-2.5 of internal diameter of cylinder to be L2, L1 be L2 doubly.
2. hydraulic support tail boom pushing device according to claim 1, is characterized in that, the first Sealing comprises piston seal assembly (71) and is positioned at two outer guide rings (72) of piston seal assembly (71) both sides.
3. hydraulic support tail boom pushing device according to claim 1, is characterized in that, the second Sealing comprises flower bud shape seal ring (81) and is positioned at the guide ring (82) of flower bud shape seal ring (81) both sides.
4. hydraulic support tail boom pushing device according to claim 1, it is characterized in that, also be provided with dust ring (92) between stop collar (5) and piston rod (4), dust ring (92) is arranged near supporting portion (41).
5. hydraulic support tail boom pushing device according to claim 1, is characterized in that, cylinder cap (1) is welded and fixed the end of cylinder barrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030134.2A CN104863918A (en) | 2015-01-21 | 2015-01-21 | Pushing device for tail beam of hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030134.2A CN104863918A (en) | 2015-01-21 | 2015-01-21 | Pushing device for tail beam of hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104863918A true CN104863918A (en) | 2015-08-26 |
Family
ID=53909993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510030134.2A Pending CN104863918A (en) | 2015-01-21 | 2015-01-21 | Pushing device for tail beam of hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104863918A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3225342A1 (en) * | 1982-07-07 | 1984-01-12 | Bergwerksverband Gmbh, 4300 Essen | Hydraulic working cylinder with stroke displacement transducer |
| DE3835769A1 (en) * | 1988-10-20 | 1990-04-26 | Gewerk Eisenhuette Westfalia | Roof-bar arrangement for hydraulic support units, in particular for shield-type powered support assemblies, with a slide bar and allocated slide-bar cylinder |
| CN200967723Y (en) * | 2006-11-07 | 2007-10-31 | 浙江衢州煤矿机械总厂有限公司 | Hydraulic support jack |
| CN101941657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Integral seal jack |
| CN204553399U (en) * | 2015-01-21 | 2015-08-12 | 巨隆液压设备(集团)有限公司 | A kind of hydraulic support tail boom pushing device |
-
2015
- 2015-01-21 CN CN201510030134.2A patent/CN104863918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3225342A1 (en) * | 1982-07-07 | 1984-01-12 | Bergwerksverband Gmbh, 4300 Essen | Hydraulic working cylinder with stroke displacement transducer |
| DE3835769A1 (en) * | 1988-10-20 | 1990-04-26 | Gewerk Eisenhuette Westfalia | Roof-bar arrangement for hydraulic support units, in particular for shield-type powered support assemblies, with a slide bar and allocated slide-bar cylinder |
| CN200967723Y (en) * | 2006-11-07 | 2007-10-31 | 浙江衢州煤矿机械总厂有限公司 | Hydraulic support jack |
| CN101941657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Integral seal jack |
| CN204553399U (en) * | 2015-01-21 | 2015-08-12 | 巨隆液压设备(集团)有限公司 | A kind of hydraulic support tail boom pushing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204553399U (en) | A kind of hydraulic support tail boom pushing device | |
| KR20100132439A (en) | Hydrulic cylinder | |
| US20090257831A1 (en) | Suspending Hydraulic Pillar | |
| CN105402483A (en) | Valve rod packing sealing device of underwater valve | |
| CN100596323C (en) | Support cylinder as well as support means and crane having the same | |
| CN104863918A (en) | Pushing device for tail beam of hydraulic support | |
| CN103010180B (en) | Telescopic support leg device and arm support type engineering machinery equipment | |
| CN201650314U (en) | Telescopic upright | |
| CN204552793U (en) | A kind of hydraulic support top beam balance holding device | |
| CN204419222U (en) | A kind of hydraulic bracket side guard plate thrust unit | |
| CN204003778U (en) | A kind of protector for sensor, oil cylinder and engineering machinery | |
| KR101332260B1 (en) | Hydraulic control valve for breaker | |
| CN201818589U (en) | Jib system and telescopic cylinder thereof | |
| CN106762956A (en) | Quick response airdraulic actuator | |
| CN104594934B (en) | A kind of hydraulic bracket side guard plate promotes device | |
| CN104454761A (en) | Double-acting single-piston-rod hydraulic cylinder | |
| CN104594935A (en) | Hydraulic bracket top bream balance maintaining device | |
| CN204783923U (en) | Pneumatic cylinder | |
| CN202926749U (en) | Short-stroke precise guiding oil cylinder | |
| CN100402883C (en) | No-leakage hydraulic damper | |
| CN210978523U (en) | Upright post sealing device | |
| CN104196714B (en) | Oil field plunger oil-well pump Dynamic Seal combination plunger assembly | |
| CN204434186U (en) | A kind of doublestroke dual thrust hydraulic jack | |
| CN103670456A (en) | Mining hydraulic prop for magnetic liquid sealing | |
| CN101285492B (en) | Floating guiding hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |
|
| RJ01 | Rejection of invention patent application after publication |