CN100359132C - Hydraulic coal mine support for low-position roof blasting-down - Google Patents
Hydraulic coal mine support for low-position roof blasting-down Download PDFInfo
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- CN100359132C CN100359132C CNB031119212A CN03111921A CN100359132C CN 100359132 C CN100359132 C CN 100359132C CN B031119212 A CNB031119212 A CN B031119212A CN 03111921 A CN03111921 A CN 03111921A CN 100359132 C CN100359132 C CN 100359132C
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- back timber
- hinged
- caving
- jack
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Abstract
The present invention relates to a hydraulic coal mine support for low-position roof blasting-down, which is composed of double upright posts in one row, a top beam and a base which are hinged on both ends of the upright posts, a shielding beam hinged on the back end of the top beam, a coal discharging mechanism at the back part of the shielding beam, a front connecting rod and a back connecting rod which are hinged between the base and the shielding beam, a pushing mechanism in the middle of the base, a wall protecting device at the front part of the top beam, a balancing jack hinged between the top beam and the shielding beam, etc., wherein the coal discharging mechanism is composed of a tail beam hinged on the back end of the shielding beam, an inserting plate jack, an inserting plate and a tail beam jack. The two-post shielding type hydraulic coal mine support for low-position roof blasting-down is developed by integrating the characteristics of a two-post shielding type hydraulic support and a four-post supporting shielding type hydraulic coal mine support for low-position roof blasting-down. The present invention reserves multiple advantages of hydraulic coal mine supports for low-position roof blasting-down. The present invention has the advantages of balanced stress of the upright posts, full exertion of supporting capability, compact structure, obvious decrease of top beam face width, effective supporting intensity increase, supporting effect improvement, convenient support operation and easy realization of automatization by electric-hydraulic control; besides, the present invention is favorable to the realization of high safety, high production and high efficiency of a comprehensive blasting-down working face.
Description
Affiliated technical field
The present invention relates to colliery underground mining stope support apparatus, particularly a kind of thick low caving coal hydraulic support of using greater than 5 meters, the comprehensive extracting and caving face that it is good that the top coal emits putting property of coal that is applicable to.
Background technology
Past attempts was used the two column protected type high-level caving hydraulic support.This support is short back timber, the single hinge point type stabilizing mechanism, and two upright supports are on caving shield, and single transporter sublevel caving hydrau lic support that caving shield puts in a skylight is a kind of sublevel caving hydrau lic support of earliest period, because many defectives are eliminated.
At present, the employed caving roof coal hydraulic support of comprehensive extracting and caving face is the four post support shield type support.Form by stabilizing mechanism can be divided into: forward four link type four post sublevel caving hydrau lic supports, reverse four link type four post sublevel caving hydrau lic supports; Mono-pendulum type or single hinge point type four post sublevel caving hydrau lic supports.
The patent that title is " a kind of low caving coal hydraulic support ", its patent No.: ZL 99112531.2, publication number: CN 1296115A are rolled up, disclosed for No. 21 in China's " Gazette of Patent for Invention " the 17th.Its purpose provides a kind of can the assurance and crosses coal space, the preceding operation of convenient stand behind the frame, can improve the low caving coal hydraulic support of quadric chain force-bearing situation again; Its formation is: by column two ends base that connects and the back timber of being with 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 caving shield, and front rod is double link and is positioned at after the rear column.This support is the typical frame type of the present four post support shield type caving roof coal hydraulic support that uses.
Though several support patterns of generally using have also obtained better effects now, for important function has been brought into play in coal industry, but its weak point is: the compliance ubiquity defective of its type and country rock, and the front and rear row column discontinuity equalization phenomenon of four-column type is serious, front pillar is stressed big, rear pillar is stressed little, even tension, and the mechanical characteristic of support worsens, support capacity is not in full use, and support is to the top board bad adaptability.Particularly along with improving constantly that the colliery high-yield and high-efficiency requires, generally adopt two pillar electrichydraulic control hydraulic supports abroad, existing four post sublevel caving hydrau lic supports are unfavorable for adopting electrichydraulic control, improve the work plane automaticity.
Summary of the invention
In order to overcome the weak point of existing low caving coal hydraulic support, the invention provides a kind of novel low caving coal hydraulic support, this support can fundamentally eliminate front and rear row column discontinuity equalization defective, improve the mechanical characteristic of support, improve sublevel caving hydrau lic support to the compliance of country rock, improve fully mechanized coal face supporting effect, adapt to the high-yield and high-efficiency top coal caving and require, be easier to realize the electrichydraulic control and the production automation.
The technical solution adopted for the present invention to solve the technical problems is:
This low caving coal hydraulic support, by hinged respectively back timber and the base of column and column two ends, be articulated in the caving shield of top beam rear end, the caving shield rear portion put coal mechanism, be articulated in front rod and back link between base rear portion and the caving shield rear portion, be loaded on the middle-grade thrust gear of base, the wall supporting device of back timber front portion constitutes.It puts coal mechanism by the tail boom that is hinged on the caving shield rear end, plate jack in the tail boom and by the push-and-pull of plate jack along the gathering sill in the tail boom and flexible plate is articulated between caving shield and the tail boom, the tail boom jack that coal is put in the tail boom swing is constituted.Wherein, column only adopts two and be single layout.Be provided with balance jack under the pin joint of back timber and caving shield, the two ends of balance jack are hinged on respectively on back timber, the caving shield.
The technical solution adopted for the present invention to solve the technical problems can also be:
The back timber of this low caving coal hydraulic support adopts integral top beam, or claims whole top rigidity back timber.
The back timber of this support also can adopt articulated roof beam, or claims the segmentation articulated roof beam, and it is made of short back timber and hinged front-axle beam, the front-axle beam jack of front end thereof.
The balance jack of this support adopts two, places the close longitudinal midline position of back timber, caving shield.
The balance jack of this support also can adopt single, places the longitudinal midline position of back timber, caving shield.
The tooth of the plate external part of putting coal mechanism of this support is a conical tooth, and the number of tooth is 5～9.
Column of this support and back timber, the hinged needling of base adopt the monoblock cast structure.
The wall supporting device of this support is made of the face guard that is articulated in the back timber front end, wall supporting jack, quarter butt, stock, and four are hinged to quadric chain.
The back timber of this support adopts the back timber that has the active side backplate on it.
The invention has the beneficial effects as follows:
1. back timber has only two root posts, single support, and the column stress equalization, support capacity can be given full play to.
2. compare the distance of face roof under control that can significantly reduce back timber with the four post support shield type support, improve effective support intensity, improve supporting effect, help the safe high-yield and high-efficiency of work plane.
3. compact conformation, the center to center distance of conveyer before and after reducing effectively, favourable intensive management.
4. putting coal mechanism can put down the caving coal of carrying on the back on the caving shield that emits, and can avoid causing " antiaircraft gun " operating mode of support owing to move behind caving shield back of the body cash and the roof pressure, favourable to the reasonable operating mode that guarantees two column holders.
5. two pillar sublevel caving hydrau lic support liftings, to move frame easy to operate, is easier to adopt electrichydraulic control, realizes high-efficient automatic.
6. the good characteristics that kept low caving coal hydraulic support:
A. coal discharge outlet is low and continuous, and drawing effectiveness is good, does not have the back loss, the recovery ratio height.
B. the back conveyer is along backplane, and float coal is discharged easily, and it is brisk to move frame.
C. tail beam flashboard can be cut off coarse coal, makes coal discharge outlet be difficult for stopping up.
D. it is big that the coal space is put at the rear portion, and the tail boom pendulum angle is big, helps top coal inbreak, puts coal efficient height.
E. effectively reduce and the obstruct coal dust.
Description of drawings
Fig. 1 is the structural representation front view of integral top beam low caving coal hydraulic support of the present invention
Fig. 2 is the structural representation vertical view of the base portion of Fig. 1 low caving coal hydraulic support
Fig. 3 is the structural representation of the wall supporting device of Fig. 1 low caving coal hydraulic support
Fig. 4 is the structural representation front view of the active side backplate part of back timber
Fig. 5 is the structural representation vertical view cutaway drawing of the active side backplate part of back timber
Fig. 6 is a structural representation front view of putting the plate of coal mechanism
Fig. 7 is a structural representation vertical view of putting the plate of coal mechanism
Fig. 8 is the structural representation front view of articulated roof beam low caving coal hydraulic support of the present invention
Among the figure: the 1-back timber, the 2-caving shield, the 3-front rod, the 4-back link, the 5-base, 6-is put the tail boom of coal mechanism, the 7-plate, the 8-column, the 9-balance jack, the 10-thrust gear, 11-wall supporting device, 12-tail boom jack, 13-plate jack, the 14-face guard, the 15-quarter butt, the 16-stock, 17-wall supporting jack, 18-active side backplate, the 19-guide peg, 20-thruster jack, 21-fixation side backplate, the 22-tooth, the 23-front-axle beam, 24-front-axle beam jack, 25-back timber (short back timber)
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment 1:
Low caving coal hydraulic support of the present invention shown in Figure 1, mainly by back timber 1, caving shield 2, front rod 3, back link 4, base 5, column 8, balance jack 9, thrust gear 10, wall supporting device 11, and tail boom 6, plate 7, the tail boom jack 12 of putting coal mechanism are formed.
Between back timber 1 and the base 5 by the 8 hinged supports of two root posts, the rear end of back timber 1 and caving shield 2 are hinged, the pin joint below of back timber 1 and caving shield 2 has two balance jack 9 to be articulated between the two, the rear end of caving shield 2 is hinged with the tail boom 6 of putting coal mechanism, and the pin joint below of caving shield 2 and tail boom 6 has tail boom jack 12 to be articulated between the two.Front rod 3, back link 4 are articulated between caving shield 2 rear portions and base 5 rear portions.Thrust gear 10 is arranged in the middle-grade of base 5.Wall supporting device 11 is hinged on the front end of back timber 1.
In brief, the present invention is the hydraulic support of two post supporting top beams, four connecting rod stabilizing mechanisms, two conveyers in front and back, low caving coal, or claims the two column protected type low caving coal hydraulic support.
Two of 8 usefulness of column, be single layout, the front and back of column 8 are walkway.Column 8 adopts double-telescopic upright post.Column 8 and back timber 1, base 5 hinged needlings adopt the monoblock cast structure, to guarantee support strength.Be that needling is single-casting, band horizontal bar plate one casts out, and increases the weld seam bonding strength between needling and main muscle.As shown in fig. 1.
Fig. 2 illustrates the structure of base 5 with the thrust gear 10 of this support bottom.
Wall supporting device shown in Figure 3 is hinged on the front end of back timber 1, adopts quadric chain.By the face guard 14 that is hinged on back timber 1 front end, lower end by hinged with it quarter butt 15, be hinged with the lower end that is hinged on the stock 16 on another pin joint of back timber 1 front end, this hinging pin shaft is hinged with the push rod end that is hinged on the wall supporting jack 17 on the back timber 1 again simultaneously, constitutes quadric chain.Face guard 14 is realized upset and is received flat by quadric chain and 17 effects of wall supporting jack.It is big to be characterized in choosing angle.
Fig. 4,5 shows the structure of the active side backplate part of back timber 1.
Back timber 1 adopts integral top beam, or claims whole top rigidity back timber.Have the active side backplate on the back timber 1.Two side guard boards of back timber are for sealing and anti-down usefulness between frame.Wherein a side is a fixation side backplate 21, and opposite side is active side backplate 18, scalable action.Active side backplate 18 is hinged by two thruster jack 20 in guide peg 19 and the back timber, and is flexible by means of the passing realization of thruster jack 20.
Caving shield 2 also adopts band active side backplate.The active side backplate of caving shield 2, structure is identical with the active side backplate of back timber.
Front and rear connecting rods 3,4 is articulated between the rear portion of the rear portion of caving shield 2 and base 5, constitutes quadric chain.Front rod 3 adopts double link, back link 4 to adopt single connecting rod.The single positive four-bar linkage structure in two backs both can increase the anti-twisting property of support before this, made that support stability is good, reliability is high, can guarantee that again the support rear portion has than large space, was convenient to that rear portion equipment is installed and maintenance.
Put coal mechanism by tail boom 6, plate 7, tail boom jack 12, and formation such as plate jack 13.Tail boom 6 directly is hinged on the rear end of caving shield 2, and the plate 7 of plate jack 13 and push-and-pull thereof is housed in the tail boom 6, and operation plate jack 13 can make plate 7 flexible in the gathering sill of tail boom 6, with broken coarse coal, seal cash and put coal.Be articulated in the tail boom jack 12 between caving shield 2 and the tail boom 6, be used for tail boom 6 on accommodate accent.Working space is adjusted in going up of tail boom 6 when putting, following timing plate retraction realizes putting coal.The tail boom of putting coal mechanism also can adopt band active side backplate.Constitute by two the thruster jack, guide peg and the active side backplate that are located at tail boom bottom surface, single-sided arrangement.
Fig. 6,7 illustrates the structure of the plate 7 of putting coal mechanism.The tooth 22 of plate 7 external parts adopts conical tooth, can be circular cone tooth, pyramid tooth, serves as preferred with the rectangular pyramid tooth; The number of tooth 22 is kept to 5～9, can increase the broken coal ability of plate.
Support adopts the high-volume hydraulic system, and main feed liquor and lead back liquid employing double-circuit system is with the assurance advancing velocity.Can on support caving shield 2, back link 4 or tail boom 6, high pressure sprays fog equipment be installed.
Embodiment 2:
Fig. 8 illustrates another kind of form of the present invention, and promptly back timber adopts the two column protected type low caving coal hydraulic support of articulated roof beam.Articulated roof beam, or claim the segmentation articulated roof beam, constitute by back timber 25, front-axle beam 23, front-axle beam jack 24.Front-axle beam 23 is articulated in the front end of back timber 25, and front-axle beam jack 24 is articulated between back timber 25 and the front-axle beam 23.Correspondingly, the wall supporting device 11 of its quadric chain should be hinged on the front-axle beam 23, and promptly the rear end of face guard 14, stock 16, wall supporting jack 17 are hinged on the front end of front-axle beam 23.In addition, this routine remainder all can be identical with embodiment 1.
In above-mentioned two embodiment: integral top beam is simple and reliable for structure, and back timber front end supporting power is big; The articulated roof beam complex structure, back timber front end supporting power is less than the former, but the compliance of support is good.
Except that above technical scheme of giving an example, also have following technical measures also can select to adopt:
1. column: the single telescopic column that adopts the band mechanical extension bar.
2. balance jack: adopt single jack, be arranged in the longitudinal midline position of back timber, caving shield.
3. thrust gear: the short transfer bar mechanism that adopts forward to install.
4. back timber and caving shield: adopt not with the active side backplate.
5. put coal mechanism: its tail boom adopts not with the active side backplate.
6. wall supporting device: adopt the wall supporting jack and face guard is directly hinged, extension and contraction control face guard form.
Processing and manufacturing: the rack body structural meterials adopts 70kg～80kg grade high-strength steel plate welding.
Claims (9)
1. low caving coal hydraulic support, comprise back timber and base that column and two ends thereof are hinged respectively, be articulated in the caving shield of top beam rear end, the caving shield rear portion put coal mechanism, be articulated in the front and rear connecting rods between base rear portion and the caving shield rear portion, be loaded on the middle-grade thrust gear of base, the wall supporting device of back timber front portion; Wherein, put coal mechanism and comprise the tail boom that is hinged on the caving shield rear end, plate jack in the tail boom and the plate that stretches by its push-and-pull, be articulated between caving shield and the tail boom, can make the tail boom swing put the tail boom jack of coal, it is characterized in that: said column is two root posts (8) that are single layout, balance jack (9) is arranged under the pin joint of back timber and caving shield (2), and its two ends are hinged on respectively on back timber, the caving shield (2).
2. low caving coal hydraulic support according to claim 1 is characterized in that: said back timber is integral top beam (1).
3. low caving coal hydraulic support according to claim 1 is characterized in that: said back timber is an articulated roof beam, comprises the hinged front-axle beam (23) of back timber (25) and front end thereof, front-axle beam jack (24).
4. low caving coal hydraulic support according to claim 1 is characterized in that: said balance jack (9) is two, is positioned at the position of the close longitudinal midline of back timber, caving shield (2).
5. low caving coal hydraulic support according to claim 1 is characterized in that: said balance jack (9) is positioned at the longitudinal midline position of back timber, caving shield (2) for single.
6. low caving coal hydraulic support according to claim 1 is characterized in that: the said tooth (22) of putting plate (7) external part of coal mechanism is a conical tooth, and the number of tooth is 5～9.
7. low caving coal hydraulic support according to claim 1 is characterized in that: said column and back timber, the hinged needling of base (5) are the monoblock cast structure.
8. low caving coal hydraulic support according to claim 1, it is characterized in that: said wall supporting device (11), comprise the face guard (14), wall supporting jack (17), quarter butt (15) and the stock (16) that are hinged with the back timber front end, four are hinged to quadric chain.
9. low caving coal hydraulic support according to claim 1 is characterized in that: said back timber has the active side backplate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031119212A CN100359132C (en) | 2003-03-05 | 2003-03-05 | Hydraulic coal mine support for low-position roof blasting-down |
| AU2003271396A AU2003271396B2 (en) | 2003-03-05 | 2003-12-30 | A sub-level caving hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031119212A CN100359132C (en) | 2003-03-05 | 2003-03-05 | Hydraulic coal mine support for low-position roof blasting-down |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1526914A CN1526914A (en) | 2004-09-08 |
| CN100359132C true CN100359132C (en) | 2008-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031119212A Expired - Lifetime CN100359132C (en) | 2003-03-05 | 2003-03-05 | Hydraulic coal mine support for low-position roof blasting-down |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100359132C (en) |
| AU (1) | AU2003271396B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2544345C2 (en) | 2009-07-10 | 2015-03-20 | Джой ММ Делавэр, Инк. | Roof supports for longwall mining |
| DE202009015653U1 (en) * | 2009-11-25 | 2011-07-12 | Bucyrus Europe Gmbh | Shield cap for a shield extension |
| CN102562110B (en) * | 2010-12-17 | 2014-04-02 | 郑州四维机电设备制造有限公司 | Integrated hydraulic support of four-post paste filling supporting in thin coal seam |
| CN102587947A (en) * | 2012-02-13 | 2012-07-18 | 三一重型综采成套装备有限公司 | Hydraulic support |
| CN102808638A (en) * | 2012-08-20 | 2012-12-05 | 郑州煤矿机械集团股份有限公司 | Insertion plate for tail beam of sublevel caving coal hydraulic bracket |
| CN102900450A (en) * | 2012-09-05 | 2013-01-30 | 山东科技大学 | Caving coal hydraulic support with large swing beam structure |
| 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 |
| CN103233762B (en) * | 2013-04-11 | 2015-06-17 | 山西平阳重工机械有限责任公司 | Two-prop shielding type electro-hydraulic-control top-coal caving hydraulic support |
| CN103195459B (en) * | 2013-04-24 | 2016-01-20 | 江苏蛟龙重工集团有限公司 | Low caving coal hydraulic support |
| CN103410517B (en) * | 2013-07-05 | 2016-02-24 | 中国煤炭科工集团太原研究院 | Speedy drivage is taken a step automatic moving type adhesive tape tail bracing or strutting arrangement |
| CN103470280A (en) * | 2013-09-24 | 2013-12-25 | 北京诚田恒业煤矿设备有限公司 | Dismountable top beam hydraulic support frame for coal mine |
| CN103670458A (en) * | 2013-12-17 | 2014-03-26 | 神华集团有限责任公司 | Fully mechanized coal-mining and fully mechanized caving face hydraulic support |
| CN107939434A (en) * | 2017-12-22 | 2018-04-20 | 郑州合新科技有限公司 | Single pendulum beam caving roof coal hydraulic support |
| CN108915749A (en) * | 2018-06-29 | 2018-11-30 | 平顶山平煤机煤矿机械装备有限公司 | Brettis with adjustable multistage waste rock board |
| CN110219688A (en) * | 2019-05-24 | 2019-09-10 | 浙江大学山东工业技术研究院 | Tiltable top beam low caving coal end hydraulic support |
| CN114738030B (en) * | 2022-04-06 | 2022-10-11 | 常州市新创智能科技有限公司 | Hydraulic support side protection plate and processing method |
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| PL175227B1 (en) * | 1995-01-23 | 1998-11-30 | Maszyn Glinik Sa Fab | Mine roof supports |
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- 2003-03-05 CN CNB031119212A patent/CN100359132C/en not_active Expired - Lifetime
- 2003-12-30 AU AU2003271396A patent/AU2003271396B2/en not_active Expired
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3241894C1 (en) * | 1982-11-12 | 1984-03-15 | Thyssen Industrie Ag, 4300 Essen | Stabilising device for face support assemblies |
| 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 |
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| US5961254A (en) * | 1996-08-19 | 1999-10-05 | Dbt Deutsch Bergbau-Technik Gmbh | Hydraulic advancing support frame |
| CN1296116A (en) * | 1999-11-10 | 2001-05-23 | 兖矿集团有限公司 | Hydraulic prop frame for low position blasting down the roof coal |
| CN2612799Y (en) * | 2003-03-05 | 2004-04-21 | 兖矿集团有限公司 | Hydraulic prop frame for low position blasting down the roof coal |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003271396B2 (en) | 2006-04-27 |
| AU2003271396A1 (en) | 2004-09-23 |
| CN1526914A (en) | 2004-09-08 |
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| CX01 | Expiry of patent term |
Granted publication date: 20080102 |
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| CX01 | Expiry of patent term |