CN104594935A - Hydraulic bracket top bream balance maintaining device - Google Patents
Hydraulic bracket top bream balance maintaining device Download PDFInfo
- Publication number
- CN104594935A CN104594935A CN201510030156.9A CN201510030156A CN104594935A CN 104594935 A CN104594935 A CN 104594935A CN 201510030156 A CN201510030156 A CN 201510030156A CN 104594935 A CN104594935 A CN 104594935A
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- CN
- China
- Prior art keywords
- piston
- ring
- cylinder barrel
- cylinder
- seal
- 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
- 241001519451 Abramis brama Species 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 13
- 229920006324 polyoxymethylene Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000002955 isolation Methods 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0418—Positioning devices and stabilizing means for the props
-
- 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
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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic bracket top bream balance maintaining device. The interior of a cylinder is provided with a through cavity; a cylinder cover and a guide sleeve are respectively arranged at two ends of the cylinder; a first joint base and a second joint base are arranged at the side wall of the cylinder and are communicated with the through cavity; a piston is positioned between the first joint base and the second joint base in the cylinder; one end, away from the piston, of a piston rod extends out of the through cavity from an opening of the guide sleeve, and a sealing piece is respectively arranged between the piston and the cylinder, between the piston and the piston rod, between the guide sleeve and the cylinder, as well as between the guide sleeve and the piston rod. The hydraulic bracket top bream balance maintaining device has the advantages that the integral structure is compact, the design is reasonable, the structure is stable and reliable in the repeated use process, the mechanical accuracy is high, the parts are sealed by the corresponding sealing piece, the sealing effect is greatly improved, the leakage of a working medium is avoided, and the damage to each part caused by outside dust impurities entering the cylinder can be also prevented.
Description
Technical field
The present invention relates to hydraulic support technical field, particularly relate to a kind of hydraulic support top beam balance holding device.
Background technology
Hydraulic support is the important component part of winning equipment, is used for controlling the mine pressure of face.The top board of work plane 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 security of safeguard work personnel to greatest extent.Back timber is the important composition of hydraulic support, in the hydraulic support course of work, plays main support effect, ensures and produces and life security.In the course of the work, back timber is by jack adjustment, and therefore the stability of jack pair back timber plays vital effect, thus has material impact to the stressed of whole support and stability.
Summary of the invention
For solving the technical problem existed in background technology, the present invention proposes a kind of hydraulic support top beam balance holding device, reasonable in design, good integrity, and working stability is reliable, and sealing performance is excellent.
A kind of hydraulic support top beam balance holding device that the present invention proposes, comprising: cylinder cap, cylinder barrel, piston rod, piston and fairlead;
Cylinder barrel inside has runs through cavity, 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 plinth is provided with in the first through hole, first plinth by the first through hole with run through cavity and be communicated with, be provided with the second plinth in the second through hole, the second plinth by the second through hole with run through cavity and be communicated with;
Cylinder cap sealing is fixed on cylinder barrel one end;
Fairlead is fixed on cylinder barrel away from one end of cylinder cap and is positioned at the second through hole away from the first through hole side, fairlead outer wall is against the inwall of cylinder barrel, the first seal and the first back-up ring is provided with between fairlead and cylinder barrel, the flower bud shape sealing ring that first seal comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring, be provided with opening in the middle part of fairlead, make to run through cavity and ft connection in cylinder barrel;
What piston rod one end was positioned at cylinder barrel runs through cavity, and the other end stretches out cylinder barrel from the opening of fairlead, is provided with the second seal and interior guide ring between piston rod and fairlead, the flower bud shape sealing ring that the second seal comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring;
Piston is fixed on the sidewall of piston rod, and be provided with the second back-up ring between piston and piston rod, piston is in cylinder barrel between the first through hole and the second through hole, be provided with Combined seal ring of piston, the first clip and the second clip between piston and inner wall of cylinder, the first clip and the second clip lay respectively at Combined seal ring of piston both sides;
Internal diameter of cylinder is L1, and the 1.3-1.7 of piston stroke to be L2, L2 be L1 doubly.
Preferably, the flower bud shape back-up ring of the first seal adopts polyformaldehyde material to make, and the flower bud shape sealing ring of the first seal adopts polyurethane material to make.
Preferably, the flower bud shape back-up ring of the second seal adopts polyformaldehyde material to make, and the flower bud shape sealing ring of the second seal adopts polyurethane material to make.
Preferably, the first seal and the second seal are positioned on the same cross section of cylinder barrel.
Preferably, be also provided with dust ring between fairlead and piston rod, dust ring is positioned at fairlead opening and arranges away from the side of piston.
In the present invention, the hydraulic support top beam balance holding device proposed, cylinder barrel inside has runs through cavity, two ends are respectively equipped with cylinder cap and fairlead, cylinder barrel sidewall is provided with and runs through the first plinth and the second plinth that cavity is communicated with, piston is in cylinder barrel between the first plinth and the second plinth, piston rod to stretch out from the opening of fairlead away from one end of piston and runs through cavity, is equipped with seal between piston and cylinder barrel, between piston and piston rod, between fairlead and cylinder barrel, between fairlead and piston rod.By the hydraulic support top beam balance holding device of above-mentioned optimal design, compact overall structure, reasonable in design, in Reusability process, Stability Analysis of Structures is reliable, mechanical precision is high, adopts seal to seal, greatly improve sealing effectiveness between each parts, working media does not leak, and also can prevent external dust impurity from entering in cylinder barrel and cause damage to each parts.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of hydraulic support top beam balance holding device that the present invention proposes.
Detailed description of the invention
As shown in Figure 1, Fig. 1 is the structural representation of a kind of hydraulic support top beam balance holding device that the present invention proposes.
With reference to Fig. 1, a kind of hydraulic support top beam balance holding device that the present invention proposes, comprising: cylinder cap 1, cylinder barrel 2, piston rod 4, piston 3 and fairlead 5;
Cylinder barrel 2 inside has runs through cavity, 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 plinth 21 is provided with in the first through hole, first plinth 21 by the first through hole with run through cavity and be communicated with, be provided with in the second through hole the second plinth 22, second plinth 22 by the second through hole with run through cavity and be communicated with;
Cylinder cap 1 sealing is fixed on cylinder barrel 2 one end;
Fairlead 5 is fixed on cylinder barrel 2 away from one end of cylinder cap 1 and is positioned at the second through hole away from the first through hole side, fairlead 5 outer wall is against the inwall of cylinder barrel 2, the first seal 61 and the first back-up ring 71 is provided with between fairlead 5 and cylinder barrel 2, the flower bud shape sealing ring that first seal 61 comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring, wherein, flower bud shape back-up ring adopts polyformaldehyde material to make, flower bud shape sealing ring adopts polyurethane material to make, be provided with opening in the middle part of fairlead 2, make to run through cavity and ft connection in cylinder barrel 2;
What piston rod 4 one end was positioned at cylinder barrel 2 runs through cavity, the other end stretches out cylinder barrel 2 from the opening of fairlead 5, the second seal 62, interior guide ring 81 and dust ring 9 is provided with between piston rod 4 and fairlead 5, first seal 61 and the second seal 62 are positioned on the same cross section of cylinder barrel 2, the flower bud shape sealing ring that second seal 62 comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring, wherein, flower bud shape back-up ring adopts polyformaldehyde material to make, flower bud shape sealing ring adopts polyurethane material to make, and dust ring 9 is positioned at fairlead 5 opening and arranges away from the side of piston 3;
Piston 3 is fixed on the sidewall of piston rod 4, and be provided with the second back-up ring 72 between piston 3 and piston rod 4, piston 3 is in cylinder barrel 2 between first through hole and the second through hole, be provided with Combined seal ring of piston 82, first clip 83 and the second clip 84, first clip 83 and the second clip 84 between piston 3 and cylinder barrel 2 inwall and lay respectively at Combined seal ring of piston 82 both sides.
In specific design process, internal diameter of cylinder is L1, and the 1.3-1.7 of piston stroke to be L2, L2 be L1 doubly.
In the hydraulic support top beam balance holding device course of work of the present embodiment, when working media flows into cylinder barrel from the first plinth, when working media enters the space between piston and cylinder cap, promote cylinder cap to move to away from piston direction, working media simultaneously between piston and fairlead flows out from the second plinth, thus band moveable cylinder moves to the direction, support portion away from piston rod, carry out promotion stroke, when working media flows into cylinder barrel from the second plinth, when working media enters the space between piston and fairlead, promote piston to move to cylinder cap direction, working media simultaneously between piston and cylinder cap flows out from the first plinth, thus drive piston rod to advance to cylinder cap direction, carry out return stroke, realize the hydraulic drive course of work.
In the present embodiment, the hydraulic support top beam balance holding device proposed, cylinder barrel inside has runs through cavity, two ends are respectively equipped with cylinder cap and fairlead, cylinder barrel sidewall is provided with and runs through the first plinth and the second plinth that cavity is communicated with, piston is in cylinder barrel between the first plinth and the second plinth, piston rod to stretch out from the opening of fairlead away from one end of piston and runs through cavity, is equipped with seal between piston and cylinder barrel, between piston and piston rod, between fairlead and cylinder barrel, between fairlead and piston rod.By the hydraulic support top beam balance holding device of above-mentioned optimal design, compact overall structure, reasonable in design, in Reusability process, Stability Analysis of Structures is reliable, mechanical precision is high, adopts seal to seal, greatly improve sealing effectiveness between each parts, working media 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 hydraulic support top beam balance holding device internal diameter of cylinder of the present embodiment is 200mm, piston rod footpath is 105mm, piston stroke is 300mm, in its course of work, cylinder cylinder pressure can reach 31.5Mpa, and thrust can reach 989KN, pulling force can reach 716.8KN, uses after testing and still has good sealing effectiveness 30000-60000 time.
Between each parts, all seal is set, greatly improves sealing performance, ensure that in the course of work, working media does not leak, ensure that balance holding device internal work environment is reliable.
The above; be only the present invention's preferably detailed description of the invention; 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 technical 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 top beam balance holding device, is characterized in that, comprising: cylinder cap (1), cylinder barrel (2), piston rod (4), piston (3) and fairlead (5);
Cylinder barrel (2) inside has runs through cavity, 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 plinth (21) is provided with in the first through hole, first plinth (21) by the first through hole with run through cavity and be communicated with, be provided with the second plinth (22) in the second through hole, the second plinth (22) by the second through hole with run through cavity and be communicated with;
Cylinder cap (1) sealing is fixed on cylinder barrel (2) one end;
Fairlead (5) is fixed on cylinder barrel (2) away from one end of cylinder cap (1) and is positioned at the second through hole away from the first through hole side, fairlead (5) outer wall is against the inwall of cylinder barrel (2), the first seal (61) and the first back-up ring (71) is provided with between fairlead (5) and cylinder barrel (2), the flower bud shape sealing ring that first seal (61) comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring, fairlead (2) middle part is provided with opening, makes to run through cavity and ft connection in cylinder barrel (2);
What piston rod (4) one end was positioned at cylinder barrel (2) runs through cavity, the other end stretches out cylinder barrel (2) from the opening of fairlead (5), the second seal (62) and interior guide ring (81) is provided with, the flower bud shape sealing ring that the second seal (62) comprises flower bud shape back-up ring and arranges against flower bud shape back-up ring between piston rod (4) and fairlead (5);
Piston (3) is fixed on the sidewall of piston rod (4), and be provided with the second back-up ring (72) between piston (3) and piston rod (4), piston (3) is positioned between cylinder barrel (2) first through hole and the second through hole, be provided with Combined seal ring of piston (82), the first clip (83) and the second clip (84) between piston (3) and cylinder barrel (2) inwall, the first clip (83) and the second clip (84) lay respectively at Combined seal ring of piston (82) both sides;
Internal diameter of cylinder is L1, and the 1.3-1.7 of piston stroke to be L2, L2 be L1 doubly.
2. hydraulic support top beam balance holding device according to claim 1, it is characterized in that, the flower bud shape back-up ring of the first seal (61) adopts polyformaldehyde material to make, and the flower bud shape sealing ring of the first seal (61) adopts polyurethane material to make.
3. hydraulic support top beam balance holding device according to claim 1, it is characterized in that, the flower bud shape back-up ring of the second seal (62) adopts polyformaldehyde material to make, and the flower bud shape sealing ring of the second seal (62) adopts polyurethane material to make.
4. hydraulic support top beam balance holding device according to claim 1, it is characterized in that, the first seal (61) and the second seal (62) are positioned on the same cross section of cylinder barrel (2).
5. hydraulic support top beam balance holding device according to claim 1, it is characterized in that, also be provided with dust ring (9) between fairlead (5) and piston rod (4), dust ring (9) is positioned at fairlead (5) opening and arranges away from the side of piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030156.9A CN104594935A (en) | 2015-01-21 | 2015-01-21 | Hydraulic bracket top bream balance maintaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030156.9A CN104594935A (en) | 2015-01-21 | 2015-01-21 | Hydraulic bracket top bream balance maintaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104594935A true CN104594935A (en) | 2015-05-06 |
Family
ID=53120944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510030156.9A Pending CN104594935A (en) | 2015-01-21 | 2015-01-21 | Hydraulic bracket top bream balance maintaining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104594935A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803988C2 (en) * | 1988-02-10 | 1995-04-13 | Westfalia Becorit Ind Tech | Hydraulically switchable directional valve, preferably for hydraulic expansion systems and. the like |
| CN201024062Y (en) * | 2007-03-27 | 2008-02-20 | 郑州煤矿机械集团有限责任公司 | Dedicated balancing jack for sheltering type hydraulic support |
| CN203159124U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Balance jack for hydraulic support |
| CN203159123U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Advancing jack for hydraulic support |
| CN203269458U (en) * | 2013-05-23 | 2013-11-06 | 中煤北京煤矿机械有限责任公司 | Cylinder opening structure of bottom-lifting jack |
| CN204552793U (en) * | 2015-01-21 | 2015-08-12 | 巨隆液压设备(集团)有限公司 | A kind of hydraulic support top beam balance holding device |
-
2015
- 2015-01-21 CN CN201510030156.9A patent/CN104594935A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803988C2 (en) * | 1988-02-10 | 1995-04-13 | Westfalia Becorit Ind Tech | Hydraulically switchable directional valve, preferably for hydraulic expansion systems and. the like |
| CN201024062Y (en) * | 2007-03-27 | 2008-02-20 | 郑州煤矿机械集团有限责任公司 | Dedicated balancing jack for sheltering type hydraulic support |
| CN203159124U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Balance jack for hydraulic support |
| CN203159123U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Advancing jack for hydraulic support |
| CN203269458U (en) * | 2013-05-23 | 2013-11-06 | 中煤北京煤矿机械有限责任公司 | Cylinder opening structure of bottom-lifting jack |
| CN204552793U (en) * | 2015-01-21 | 2015-08-12 | 巨隆液压设备(集团)有限公司 | A kind of hydraulic support top beam balance holding device |
Non-Patent Citations (1)
| Title |
|---|
| 黄迷梅: "《液压气动密封与泄露防治》", 31 March 2003 * |
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| 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: 20150506 |
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| RJ01 | Rejection of invention patent application after publication |