CN110005460B - Roof-connected building block filling hydraulic support and using method thereof - Google Patents
Roof-connected building block filling hydraulic support and using method thereof Download PDFInfo
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- CN110005460B CN110005460B CN201910322244.4A CN201910322244A CN110005460B CN 110005460 B CN110005460 B CN 110005460B CN 201910322244 A CN201910322244 A CN 201910322244A CN 110005460 B CN110005460 B CN 110005460B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005065 mining Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
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- Conveying And Assembling Of Building Elements In Situ (AREA)
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Abstract
The invention provides a top-contacting building block filling hydraulic support and a using method thereof, belonging to the technical field of hydraulic supports, wherein the top-contacting building block filling hydraulic support comprises a support body; the support body comprises a front top beam, a rear top beam, a base, a front upright post, a rear upright post and a four-bar mechanism, wherein the two ends of the front upright post are respectively hinged to the front top beam and the base; and a mould height adjusting device and a mould pushing device are arranged between the filling and pouring mould and the support body. This hydraulic support building block setting time is short, and intensity is high and connect a effectual, and the building block is continuous, need not artifical setting "division wall", and it is efficient to fill, can realize with quick-witted operation, safe high-efficient exploitation.
Description
Technical Field
The invention belongs to the technical field of hydraulic supports, and particularly discloses a top-connected block filling hydraulic support and a using method thereof.
Background
With the increasing demand of coal resources in China, the problem of 'third lower' coal compaction is increasingly highlighted, and the filling coal mining method is one of green coal mining technologies developed aiming at the problem of 'third lower' coal compaction, the problem of surface subsidence, the problem of coal gangue discharge and the problem of land resources. The filling coal mining method is a rock stratum control method for filling a goaf of a coal mining working face by using filling materials, and the main filling coal mining methods at present comprise bulk filling, paste filling and block filling. Although the hydraulic support for filling the scattered bodies is provided with the tamping mechanism to enable the scattered bodies to be densely filled, the filling rate of a goaf is low due to the large void ratio of the scattered bodies. The paste filling hydraulic support needs to be hung with a filling bag, a separation wall needs to be arranged between a filling area and an unfilled area, the filling efficiency is low, and the operation with a machine is difficult. The common block filling method needs to manufacture blocks in a specific chamber and then convey the blocks to a filling place for filling, and has high labor intensity and low efficiency.
Disclosure of Invention
The invention aims to provide a top-contacting building block filling hydraulic support and a use method thereof.
In order to achieve the aim, the invention provides a roof-contacted building block filling hydraulic support, which comprises a support body; the support body comprises a front top beam, a rear top beam hinged with the front top beam, a base arranged below the front top beam and the rear top beam, a front upright post with two ends respectively hinged with the front top beam and the base, a rear upright post with two ends respectively hinged with the rear top beam and the base, and a four-bar linkage arranged between the front upright post and the rear upright post, wherein a telescopic beam is arranged at the tail part of the rear top beam, a telescopic beam jack inside the telescopic beam extends out of the telescopic beam to be connected with the rear top beam, and a filling and pouring mold is arranged below the telescopic beam; the filling and pouring die comprises an upper die and a lower die, wherein the upper die is positioned below the telescopic beam, and the lower die is in sliding connection with the upper die; the upper die and the lower die respectively comprise a back plate facing the bracket body and side plates arranged on two sides of the back plate; the filling and pouring mold is connected with the bracket body through a mold heightening device for adjusting the height of the filling and pouring mold and a mold pushing device for pushing the filling and pouring mold to move.
Further, the lower surface of the telescopic beam is a smooth surface.
Furthermore, a guide groove is formed in the lower die; the upper die is inserted into the guide groove.
Further, a spring damper is arranged in the guide groove.
Further, the die height adjusting device comprises a first height adjusting oil cylinder and a second height adjusting oil cylinder; two ends of the first heightening oil cylinder are respectively hinged with the lower part of the inclined beam of the rear top beam and the middle part of the upper die; and two ends of the second heightening oil cylinder are respectively hinged with the middle part of the cylinder barrel of the first heightening oil cylinder and the end part of the telescopic beam jack positioned on the rear top beam.
Further, the mould pushing device comprises a pushing oil cylinder and a push rod fixed on a piston of the pushing oil cylinder; the end part of the pushing oil cylinder is fixedly connected with the tail part of the base; the end part of the push rod is hinged with the middle part of the lower die.
The invention also provides a use method of the top-connected building block filling hydraulic support, which comprises the following steps:
s1, after the working face is arranged in a hole cutting mode, installing a top-connected building block filling hydraulic support, enabling a filling pouring mold to abut against a coal wall, enabling a telescopic beam to be in a withdrawing state, enabling a mold height adjusting device to swing upwards to drive an upper mold to be in forced connection with a top plate, and forming a building block pouring space;
s2, conveying pouring materials into the filling and pouring mold through a pouring pipeline to perform building block pouring operation;
s3, after the building blocks in the filling and pouring mold are solidified to reach preset strength, pulling out the filling and pouring mold by the mold pushing device, moving the frame and demolding, controlling the frame moving step distance of the abutting building block filling hydraulic support to be smaller than the length of the filling and pouring mold, ensuring that the rear building blocks are not completely demolded, and forming a five-surface closed building block pouring space each time the frame is moved;
s4, cutting a coal cutter by the coal cutter, extending the telescopic beam after the roof-contacted building block filling hydraulic support is moved to realize temporary support of the top plate of the goaf, and closing the filling and pouring mold and the telescopic beam by the mold height adjusting device to form a building block pouring space;
s5, conveying pouring materials into the filling and pouring mold through a pouring pipeline to perform building block pouring operation;
s6, after the building block is solidified to reach the preset strength, the telescopic beam is retracted, the filling and pouring mold is forcibly abutted through the mold heightening device again, the building block with the preset strength is poured again, and the full abutting of the filling building block is guaranteed;
and S7, moving the frame, demoulding, and extending the telescopic beam to prepare for the next filling operation.
The invention has the beneficial effects that:
according to the top-connected block filling hydraulic support and the use method thereof, the blocks are poured behind the support body, the carrying work of the blocks is reduced, and the full top connection of a filling and pouring mold can be realized through the mold height-adjusting device, so that the filled blocks can be completely attached to the top plate after pouring and solidification are completed, the filling rate is high, the rock stratum control effect is obvious, the operation is convenient and flexible, the top-connected block filling hydraulic support can adapt to filling and mining under various complex geological conditions, the blocks are tightly compacted in a goaf through the mold pushing device, the demoulding of the blocks is realized by matching with the hydraulic support moving frame, the following operation is realized, and the effect of parallel mining and filling is realized.
Drawings
Fig. 1 is a front view of a top-contacting block-filled hydraulic support provided in embodiment 1 of the present invention;
FIG. 2 is a top view of the top block filling hydraulic support of FIG. 1;
figure 3 is a right side view of the top block filling hydraulic support of figure 1.
In the figure: 1-a front top beam; 2-rear top beam; 3-a base; 4-front column; 5-rear upright post; 6-a four-bar linkage; 7-a telescopic beam; 8-telescopic beam jack; 9-filling a pouring mold; 9.1-upper mould; 9.2-lower mould; 10.1-a first heightening oil cylinder; 10.2-a second heightening oil cylinder; 11.1-pushing oil cylinder; 11.2-push rod.
Detailed Description
Example 1
The embodiment provides a top-connected building block filling hydraulic support which comprises a support body; the support body comprises a front top beam 1, a rear top beam 2 hinged with the front top beam, a base 3 arranged below the front top beam 1 and the rear top beam 2, a front upright post 4 with two ends respectively hinged on the front top beam 1 and the base 3, a rear upright post 5 with two ends respectively hinged on the rear top beam 2 and the base 3, and a four-bar linkage 6 arranged between the front upright post 4 and the rear upright post 5, wherein a telescopic beam 7 is arranged at the tail part of the rear top beam 2, a telescopic beam jack 8 inside the telescopic beam 7 extends out of the telescopic beam 7 to be connected with the rear top beam 2, and a filling and pouring mold 9 is arranged below the telescopic beam 7; the filling and pouring mould 9 comprises an upper mould 9.1 positioned below the telescopic beam 7 and a lower mould 9.2 connected with the upper mould 9.1 in a sliding manner; the upper die 9.1 and the lower die 9.2 both comprise a back plate facing the bracket body and side plates arranged on two sides of the back plate; the filling and pouring mold 9 is connected with the bracket body through a mold height adjusting device for adjusting the height of the filling and pouring mold 9 and a mold pushing device for pushing the filling and pouring mold 9 to move.
Wherein, front column 4 plays the supporting role with back column 5, bear roof pressure jointly with front back timber 1 and back timber 2, and maintain the balance through four- bar linkage 6, 2 afterbody of back timber is equipped with flexible roof beam 7, through the flexible of flexible roof beam jack 8, control flexible roof beam 7 and stretch out or retract in the cavity of 2 afterbody of back roof beam, the roof that stretches out flexible roof beam 7 not only can control before filling sinks, can also form inclosed building block with the filling pouring mould 9 of flexible roof beam 7 below and pour the space. The mould heightening device adjusts the upper mould 9.1 in the filling and pouring mould 9 to make the upper mould forcibly abut against or contact with the lower surface of the telescopic beam 7 to form a building block pouring space, and can be grouted inwards to form a building block filling body.
Further, the lower surface of the telescopic beam 7 is a smooth surface. Make when filling pouring mold 9 and heightening seamless contact with flexible roof beam 7, form the building block pouring space of primary confined, control flexible roof beam 7 withdrawal back, force the roof that connects to filling pouring mold 9 through the mould heightening device, form the building block pouring space of secondary confined.
Further, in this embodiment, the upper mold 9.1 and the lower mold 9.2 are connected in a specific manner, in which the lower mold 9.2 is provided with a guide groove; the upper die 9.1 is inserted into the guide groove, and the upper die 9.1 slides up and down along the guide groove under the action of the die height adjusting device. The upper die 9.1 can be provided with a sliding block or a pulley matched with the guide groove, the sliding block is used for being clamped in the guide groove to prevent the upper die 9.1 from turning on one side in the sliding process, and the pulley can reduce sliding friction force, so that the sliding is smoother.
Further, a spring-mounted damper is arranged in the guide groove to relieve the impact generated when the upper die 9.1 slides and reduce the vibration of the upper die 9.1 and the lower die 9.2.
Further, the die height adjusting device comprises a first height adjusting oil cylinder 10.1 and a second height adjusting oil cylinder 10.2; two ends of the first heightening oil cylinder 10.1 are respectively hinged with the lower part of the inclined beam of the rear top beam 2 and the middle part of the upper die 9.1; two ends of the second heightening oil cylinder 10.2 are respectively hinged with the middle part of the cylinder barrel of the first heightening oil cylinder 10.1 and the end part of the telescopic beam jack 8 positioned at the rear top beam 2. The upper die 9.1 can be driven to slide relative to the lower die 9.2 by the extension and the rotation of the first heightening oil cylinder 10.1 and the second heightening oil cylinder 10.2. In the embodiment, the cylinder end of a first heightening oil cylinder 10.1 is hinged with the lower part of the inclined beam of the rear top beam 2, and the piston end is hinged with the middle part of an upper die 9.1; the movable race end of the second heightening oil cylinder 10.2 is hinged with the middle part of the cylinder barrel of the first heightening oil cylinder 10.1, and the cylinder barrel end is connected with the end part of the telescopic beam jack 8.
Further, the mould pushing device comprises a pushing oil cylinder 11.1 and a push rod 11.2 fixed on a piston of the pushing oil cylinder 11.1; the end part of the pushing oil cylinder 11.1 is fixedly connected with the tail part of the base 3; the end of the push rod 11.2 is hinged with the middle of the lower mould 9.2. Through the extension and contraction of the pushing oil cylinder 11.1, the lower die 9.2 can be driven to lean against or be far away from the support body, and the first heightening oil cylinder 10.1 and the second heightening oil cylinder 10.2 are matched to drive the whole filling and pouring die 9 to move.
Furthermore, the upper die 9.1 and the lower die 9.2 are both groove-shaped steel plates with open upper and lower parts; the length (marked with a in figure 1) of the upper die 9.1 is 1m, the width (marked with b in figure 3) is slightly longer than the width of the bracket body, and the thickness of the steel plate is 0.04 m; the length of the lower die 9.2 is slightly smaller than that of the upper die 9.2, so that the upper die 9.2 is sleeved outside the lower die 9.2, the width of the lower die is the same as that of the upper die 9.2, and the thickness of the steel plate is 0.04 m.
Example 2
The embodiment provides a use method of the top-contacting building block filling hydraulic support in embodiment 1, which comprises the following steps:
s1, after the working face is arranged in a hole cutting mode, installing a top-connected building block filling hydraulic support, enabling a filling and pouring mold 9 to abut against a coal wall, enabling a telescopic beam 7 to be in a withdrawing state (namely the telescopic beam 7 retracts into a rear top beam 2 at the moment), enabling a mold height adjusting device to swing upwards to drive an upper mold 9.1 to be connected with a top plate in a forced mode, and forming a building block pouring space;
s2, conveying pouring materials into the filling and pouring mold 9 through a pouring pipeline to perform building block pouring operation;
s3, after the building blocks in the filling and pouring mold 9 are solidified to reach preset strength, pulling out the filling and pouring mold 9 by the mold pushing device, moving the frame and demolding, controlling the frame moving step distance of the abutting building block filling hydraulic support to be smaller than the length of the filling and pouring mold 9, ensuring that the rear building blocks are not completely demolded, and forming a building block pouring space with five closed surfaces by moving the frame each time;
s4, cutting a coal cutter, after the roof-contacted building block is filled with the hydraulic support and the support is moved, extending the telescopic beam 7 to realize temporary support of the top plate of the goaf, so as to realize temporary support of the top plate of the goaf, prevent newly exposed surrounding rocks of the top plate from falling off or falling off a separation layer in the building block filling process, and tightly closing the filling and pouring mold 9 and the telescopic beam 7 by the mold height adjusting device to form a building block pouring space;
s5, conveying pouring materials into the filling and pouring mold 9 through a pouring pipeline to perform building block pouring operation;
s6, after the building block is solidified to reach the preset strength, the telescopic beam 7 is retracted, the filling and pouring mold 9 is forcibly abutted through the mold heightening device again, the building block with the preset strength is poured again, and the full abutting of the filled building block is guaranteed;
and S7, moving the frame, demoulding, and extending the telescopic beam 7 to prepare for the next filling operation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (6)
1. The use method of the top-connected block filling hydraulic support is characterized in that the top-connected block filling hydraulic support comprises a support body;
the support body comprises a front top beam (1), a rear top beam (2) hinged with the front top beam, a base (3) arranged below the front top beam (1) and the rear top beam (2), a front upright (4) with two ends respectively hinged on the front top beam (1) and the base (3), a rear upright (5) with two ends respectively hinged on the rear top beam (2) and the base (3), and a four-bar mechanism (6) arranged between the front upright (4) and the rear upright (5);
a telescopic beam (7) is arranged at the tail part of the rear top beam (2), a telescopic beam jack (8) in the telescopic beam (7) extends out of the telescopic beam (7) to be connected with the rear top beam (2), and a filling and pouring mold (9) is arranged below the telescopic beam (7);
the filling and pouring mould (9) comprises an upper mould (9.1) positioned below the telescopic beam (7) and a lower mould (9.2) connected with the upper mould (9.1) in a sliding manner;
the upper die (9.1) and the lower die (9.2) both comprise a back plate facing the bracket body and side plates arranged on two sides of the back plate;
the filling and pouring mold (9) is connected with the bracket body through a mold height adjusting device for adjusting the height of the filling and pouring mold (9) and a mold pushing device for pushing the filling and pouring mold (9) to move;
the using method comprises the following steps:
s1, after the working face is arranged in a hole cutting mode, installing a top-connected building block filling hydraulic support, enabling a filling and pouring mold (9) to abut against a coal wall, enabling a telescopic beam (7) to be in a withdrawing state, enabling a mold height adjusting device to swing upwards to drive an upper mold (9.1) to be in forced connection with a top plate, and forming a building block pouring space;
s2, conveying pouring materials into the filling and pouring mold (9) through a pouring pipeline to perform building block pouring operation;
s3, after the building blocks in the filling and pouring mold (9) are solidified to reach preset strength, pulling out the filling and pouring mold (9) by the mold pushing device, moving and demolding, controlling the walking distance of the moving frame of the abutting building block filling hydraulic support to be smaller than the length of the filling and pouring mold (9), ensuring that the rear building blocks are not completely demolded, and forming a five-surface closed building block pouring space each time the frame is moved;
s4, cutting a cut coal by the coal cutter, extending the telescopic beam (7) after the roof-contacted building block filling hydraulic support is moved, realizing temporary support of the top plate of the goaf, and tightly closing the filling pouring mold (9) and the telescopic beam (7) by the mold height adjusting device to form a building block pouring space;
s5, conveying pouring materials into the filling and pouring mold (9) through a pouring pipeline to perform building block pouring operation;
s6, after the building block is solidified to reach the preset strength, the telescopic beam (7) is retracted, the filling and pouring mold (9) is forced to be abutted through the mold heightening device again, the building block with the preset strength is poured again to form the building block with the preset strength, and the full abutting of the filling building block is guaranteed;
and S7, moving the frame, demoulding, and extending the telescopic beam (7) to prepare for the next filling operation.
2. Use method of a top-contacting block-filling hydraulic support according to claim 1, characterised in that the lower surface of the telescopic beam (7) is smooth.
3. The use method of the top-contacting block-filling hydraulic support according to claim 1, characterized in that the lower die (9.2) is provided with a guide groove;
the upper die (9.1) is inserted into the guide groove.
4. The method for using the top-connected block filling hydraulic support according to claim 3, wherein a spring-mounted damper is arranged in the guide groove.
5. The method of using a drop head block-filled hydraulic support according to claim 1, wherein the die raising means comprises a first raising cylinder (10.1) and a second raising cylinder (10.2);
two ends of the first height-adjusting oil cylinder (10.1) are respectively hinged with the lower part of the inclined beam of the rear top beam (2) and the middle part of the upper die (9.1);
and two ends of the second heightening oil cylinder (10.2) are respectively hinged with the middle part of the cylinder barrel of the first heightening oil cylinder (10.1) and the end part of the telescopic beam jack (8) positioned on the rear top beam (2).
6. Use method of a top-contacting block-filling hydraulic support according to claim 5, characterised in that the mould-pushing device comprises a pushing cylinder (11.1) and a push rod (11.2) fixed to the piston of the pushing cylinder (11.1);
the end part of the pushing oil cylinder (11.1) is fixedly connected with the tail part of the base (3);
the end part of the push rod (11.2) is hinged with the middle part of the lower die (9.2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910322244.4A CN110005460B (en) | 2019-04-22 | 2019-04-22 | Roof-connected building block filling hydraulic support and using method thereof |
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| CN201910322244.4A CN110005460B (en) | 2019-04-22 | 2019-04-22 | Roof-connected building block filling hydraulic support and using method thereof |
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| CN110005460B true CN110005460B (en) | 2021-02-12 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2807886A1 (en) * | 1978-02-24 | 1979-08-30 | Bergwerksverband Gmbh | OFFSET SHIELD |
| CN102168571A (en) * | 2010-02-25 | 2011-08-31 | 郑州四维机电设备制造有限公司 | Basic bracket for filing support |
| CN102261257B (en) * | 2011-08-04 | 2013-06-26 | 安徽理工大学 | Hydraulic support for filling after installation and operating method thereof |
| CN202628177U (en) * | 2011-12-24 | 2012-12-26 | 中国煤炭科工集团太原研究院 | Gangue-coal ash two-column shield-type hydraulic filling support |
| CN202768040U (en) * | 2012-09-11 | 2013-03-06 | 郑州四维机电设备制造有限公司 | Bag type diaphragm filling hydraulic support |
| CN204186410U (en) * | 2014-10-25 | 2015-03-04 | 徐州中矿大贝克福尔科技股份有限公司 | A kind of coal mine filling transversal end hydraulic support |
| CN204646285U (en) * | 2015-05-22 | 2015-09-16 | 徐州中矿大贝克福尔科技股份有限公司 | A kind of coal mine paste filling exploitation high efficiency isolation liquid pressure support |
| CN109057846B (en) * | 2018-11-05 | 2023-09-15 | 徐州中矿大贝克福尔科技股份有限公司 | Colliery lotion filling exploitation hydraulic pressure isolation support |
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