CN1087807C - Hydraulic prop frame for low position blasting down the roof coal - Google Patents
Hydraulic prop frame for low position blasting down the roof coal Download PDFInfo
- Publication number
- CN1087807C CN1087807C CN99112531A CN99112531A CN1087807C CN 1087807 C CN1087807 C CN 1087807C CN 99112531 A CN99112531 A CN 99112531A CN 99112531 A CN99112531 A CN 99112531A CN 1087807 C CN1087807 C CN 1087807C
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- China
- Prior art keywords
- support
- connecting rod
- prop frame
- low position
- present
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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.)
- Expired - Lifetime
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- Jib Cranes (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention relates to a hydraulic prop frame for blasting down roof coals in a low position. In order to solve the problem of high equipment failure rate because of unreasonable connecting rod arrangement of the prop frame, a front connecting rod which is a double connecting rod is arranged behind a back upright post of the prop frame by the present invention according to the characteristic and the requirement of the hydraulic prop frame for blasting down roof coals in a low position. The height from the hinged joint of a back connecting rod which is a single connecting rod and a base to the bottom surface of the prop frame is 750 to 950mm. therefore, the present invention guarantees coal passing space behind the prop frame, and simultaneously improves the stress situation of a four bar linkage mechanism. Compared with the prop frames for blasting down roof coals in a low position in the same type, the present invention has the advantages of great strength increase, great stability increase and obvious reliability improvement and creates conditions for the realization of high yield and high efficiency.
Description
Technical field
The present invention relates to a kind of low caving coal hydraulic support, it is thick in 5 meters to be specially adapted to coal, and the top coal emits putting property good, promptly directly the top with adopting with the exploitation of emitting working face of coal seam.
Background technology
Low caving coal hydraulic support owing to put the coal space for what guarantee its rear portion, mainly contains the frame type of two kinds of form of structure at present in design.Low caving coal hydraulic support with reverse-four-link-bar form because of it takies too much pedestrian space, is not easy to operation, is difficult to satisfy the requirement of work plane high-yield and high-efficiency; And front rod is the positive four connecting rod form low caving coal hydraulic supports of Y type, be that single-point is hinged because of its front rod and base again, cause gonnecting rod body intensity low, stressed unreasonable, simultaneously because the bonding strength of base and connecting rod hinge point is low, then a little less than poor, the anti-twisting property of support stability, cause the fault rate height of support, its reliability has restricted the possibility of further raising single face output greatly, has a strong impact on production.
Summary of the invention
Based on the existence of above-mentioned drawback, the purpose of this invention is to provide a kind of after can guaranteeing it, the mistake and can improve the quadric chain force-bearing situation again when operating before coal space and the convenient stand, satisfy the low caving coal hydraulic support of its reliability requirement.
Technical solution of the present invention is: this low caving coal hydraulic support, comprise base that connects respectively by the column two ends and the back timber that has front-axle beam, be hinged with caving shield successively at top beam rear end and reach the tail boom of controlling by the tail boom jack with telescopic plate, front and rear connecting rods is arranged between base rear portion and the caving shield, wherein front rod is positioned at after the support rear column, and is double link.
The back link of this support is single connecting rod, and the pin joint of itself and base is apart from support bottom surface height A=750-950mm.And when the operating position, the slanted angle on this set cap between plane and the caving shield should satisfy α=30 °-40 °, and tail boom is B=1000-1200mm apart from the underneath clearance of support bottom surface.
The present invention compared with prior art has its significant advantage:
Because front rod is arranged on after the support rear column, and then this support is compared obvious position and the space that has ensured walkway with the low caving coal hydraulic support of reverse-four-link-bar form, greatly facilitates operation; The low caving coal hydraulic support that is the positive four connecting rod forms of Y type with front rod is compared, this structural configuration makes the front rod of this support can be set to double link, thereby greatly improved the force-bearing situation of support, for intensity and the reliability that improves support provides assurance.
In order to ensure putting the coal space behind the frame, by optimal design, the pin joint of getting its back link (for single connecting rod) and base apart from the scope of support bottom surface height A at 750-950mm; When support during in the operating position, the slanted angle on the back timber between plane and the caving shield should satisfy α=30 °-40 °, and tail boom is 1000-1200mm apart from the underneath clearance B of support bottom surface.
Above-mentioned parameter and structure setting make this support both have enough big coal space excessively, and its anti-bias load, horizontal force resistant also strengthen greatly simultaneously, and support stability is good, intensity is high, and reliability is also significantly improved thus.Everything all provides reliable guarantee for the continuity that good equipment operation rate and production can be arranged, and also for realizing high-yield and high-efficiency, reduce the maintenance of equipment expense, and then reduces production costs and has created advantage.
Description of drawings
Description of drawings of the present invention is as follows:
Fig. 1 is shown as overall structure schematic diagram of the present invention;
Fig. 2 is the vertical view in A-A cross section among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
As shown in accompanying drawing 1, this low caving coal hydraulic support, comprise base 2 that connects respectively by column 1 two ends and the back timber 3 that has front-axle beam, be hinged with caving shield 4 successively in back timber 3 rear ends and have the tail boom 6 of telescopic plate 5, the action of tail boom 6 is to realize with the tail boom jack 9 that is connected between caving shield 4 and the tail boom 6, and it cooperates the action of the plate jack 10 control plates 5 that place in the tail boom beam body to finish broken coarse coal and the task of regulating the coal discharge outlet size jointly; Front and rear connecting rods is arranged between base 2 rear portions and the caving shield 4, and wherein front rod 7 is positioned at after the support rear column.This structural configuration makes the front rod 7 of this support can be set to double link (referring to Fig. 2), thereby for improving the force-bearing situation of support, the intensity and the reliability that improve support provide assurance.
After satisfying frame simultaneously, put the coal space and be convenient to requirements such as rear operating cleaning, overhaul of the equipments, support back link 8 is designed to single connecting rod form, but its cross dimensions should be greater than front rod 7, guaranteeing support strength, and the pin joint of getting back link 8 and base 2 is apart from support bottom surface height A=750-950mm; When support (was generally 2.8-3.2m) in the operating position, the slanted angle on the back timber 3 between plane and the caving shield 4 preferably satisfied α=30 °-40 °, and tail boom 6 is B=1000-1200mm apart from the underneath clearance of support bottom surface.
According to the ZFS6200/18/35 type low caving coal hydraulic support that above-mentioned design concept is made, the pin joint of its back link and base is apart from support bottom surface height A=800mm, when support height is 3m, and α=34.6 °, B=1155mm.This model machine shows that in national inspection centers tests the support back space is big, reasonable integral structure, and the anti-bias load ability is strong, and the viability test is by 30000 times (national standard be 7000 times get final product).Debug in colliery, the prosperous village of company of Yanzhou Mining Group mining face under mine in February, 99.The average 8.2m of the coal seam thickness of this test face, according to face-airing, pedestrian, roof control, taking and placing high-yield and high-efficiency requirement when rationally, choosing work plane machine mining height degree is 3m, its taking and placing ratio is about 1: 1.75.Certainly, during the longwall top coal caving that carries out for super high seam, also available support realized separate zone production and inbreak, but the taking and placing of comprehensive coal face ratio should be controlled at 1: between the 1-2.
The 4-6 month in 1999, support of the present invention began to carry out in the down-hole formal type approval test.By June 30 this work plane advanced 634.72 meters in three months, 1066104 tons of producing coals, June, producing coal was 400368 tons, 20169 tons of the highest daily outputs, average 177.981 tons/worker of back production work efficiency, and support is not damaged, it has satisfied user's request and has obtained approval with its high reliability.We have reason to believe that it also will provide significant reference for the design of low caving coal hydraulic support from now on.
Claims (3)
1, a kind of low caving coal hydraulic support, comprise base that connects respectively by the column two ends and the back timber that has front-axle beam, be hinged with caving shield successively at top beam rear end and reach the tail boom of controlling by the tail boom jack with telescopic plate, front and rear connecting rods is arranged between base rear portion and the caving shield, it is characterized in that, described front rod is positioned at after the support rear column, and is double link.
2, low caving coal hydraulic support as claimed in claim 1 is characterized in that, back link is single connecting rod, and the pin joint of it and base is apart from support bottom surface height A=750-950mm.
3, low caving coal hydraulic support as claimed in claim 1 is characterized in that, during the operating position slanted angle α=30 between plane and the caving shield °-40 ° on this set cap, and tail boom is apart from the underneath clearance B=1000-1200mm of support bottom surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112531A CN1087807C (en) | 1999-11-10 | 1999-11-10 | Hydraulic prop frame for low position blasting down the roof coal |
| AU27673/00A AU736955B2 (en) | 1999-11-10 | 2000-04-11 | A sub-level caving hydraulic support with a low-positioned door for passing caved coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112531A CN1087807C (en) | 1999-11-10 | 1999-11-10 | Hydraulic prop frame for low position blasting down the roof coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296116A CN1296116A (en) | 2001-05-23 |
| CN1087807C true CN1087807C (en) | 2002-07-17 |
Family
ID=5275829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99112531A Expired - Lifetime CN1087807C (en) | 1999-11-10 | 1999-11-10 | Hydraulic prop frame for low position blasting down the roof coal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1087807C (en) |
| AU (1) | AU736955B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359132C (en) * | 2003-03-05 | 2008-01-02 | 兖矿集团有限公司 | Hydraulic coal mine support for low-position roof blasting-down |
| RU2544345C2 (en) | 2009-07-10 | 2015-03-20 | Джой ММ Делавэр, Инк. | Roof supports for longwall mining |
| CN102926779A (en) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | Hydraulic shielding bracket structure for coal face |
| CN102926778A (en) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | Shielding beam structure of hydraulic bracket |
| CN108412530B (en) * | 2018-02-05 | 2024-01-30 | 阳泉煤业（集团）有限责任公司 | H-shaped caving coal support upright post pressing plate fixing and moving method |
| CN110145352A (en) * | 2019-06-28 | 2019-08-20 | 山西平阳煤机装备有限责任公司 | Hydraulic support column limiting device |
| CN110500128A (en) * | 2019-09-27 | 2019-11-26 | 中煤北京煤矿机械有限责任公司 | A kind of hydraulic support with six bar mechanism |
| CN112796801B (en) * | 2021-01-27 | 2022-11-29 | 六盘水师范学院 | Fully mechanized coal mining support capable of monitoring coal caving range |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095936U (en) * | 1991-08-03 | 1992-02-12 | 朱旭 | Mechanical hydraulic support for top coal releasing |
| CN2170373Y (en) * | 1993-07-31 | 1994-06-29 | 王永胜 | Swinging tail beam type hydraulic support for blasting down roof of coal mine |
| CN2213848Y (en) * | 1994-11-21 | 1995-11-29 | 郑州煤矿机械厂 | Low-position caving hydraulic support for coal mine |
| CN2240607Y (en) * | 1995-11-16 | 1996-11-20 | 沈阳煤炭科学研究所 | hydraulic prop for blasting down the roof coal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2074228B (en) * | 1980-04-22 | 1983-11-09 | Henderson Group Ltd Pc | Door operating mechanism |
| HU179856B (en) * | 1980-05-06 | 1982-12-28 | Varpalotai Szenbanyak | Apparatus for nining particularly expolating thick seams |
-
1999
- 1999-11-10 CN CN99112531A patent/CN1087807C/en not_active Expired - Lifetime
-
2000
- 2000-04-11 AU AU27673/00A patent/AU736955B2/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095936U (en) * | 1991-08-03 | 1992-02-12 | 朱旭 | Mechanical hydraulic support for top coal releasing |
| CN2170373Y (en) * | 1993-07-31 | 1994-06-29 | 王永胜 | Swinging tail beam type hydraulic support for blasting down roof of coal mine |
| CN2213848Y (en) * | 1994-11-21 | 1995-11-29 | 郑州煤矿机械厂 | Low-position caving hydraulic support for coal mine |
| CN2240607Y (en) * | 1995-11-16 | 1996-11-20 | 沈阳煤炭科学研究所 | hydraulic prop for blasting down the roof coal |
Also Published As
| Publication number | Publication date |
|---|---|
| AU736955B2 (en) | 2001-08-09 |
| AU2767300A (en) | 2001-05-17 |
| CN1296116A (en) | 2001-05-23 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20020717 |