CN110925005A - Hydraulic support for retaining waste rock - Google Patents

Hydraulic support for retaining waste rock Download PDF

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Publication number
CN110925005A
CN110925005A CN201911213707.XA CN201911213707A CN110925005A CN 110925005 A CN110925005 A CN 110925005A CN 201911213707 A CN201911213707 A CN 201911213707A CN 110925005 A CN110925005 A CN 110925005A
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CN
China
Prior art keywords
hydraulic support
waste rock
lower swing
swing rod
connecting rod
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Application number
CN201911213707.XA
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Chinese (zh)
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CN110925005B (en
Inventor
徐亚军
程骏
刘成峰
张德生
李丁一
吕东林
朱军
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CHINA COAL SCIENCE AND TECHNOLOGY GROUP Co Ltd
Tiandi Science and Technology Co Ltd
China Coal Technology and Engineering Group Corp
Original Assignee
CHINA COAL SCIENCE AND TECHNOLOGY GROUP Co Ltd
Tiandi Science and Technology Co Ltd
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Application filed by CHINA COAL SCIENCE AND TECHNOLOGY GROUP Co Ltd, Tiandi Science and Technology Co Ltd filed Critical CHINA COAL SCIENCE AND TECHNOLOGY GROUP Co Ltd
Priority to CN201911213707.XA priority Critical patent/CN110925005B/en
Publication of CN110925005A publication Critical patent/CN110925005A/en
Application granted granted Critical
Publication of CN110925005B publication Critical patent/CN110925005B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/03Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0418Positioning devices and stabilizing means for the props
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

Abstract

The invention discloses a waste rock blocking hydraulic support, and relates to the field of mining machinery. The front connecting rod, the rear connecting rod, the front lower swing rod and the rear lower swing rod are respectively a longitudinal stabilizing mechanism and a transverse stabilizing mechanism of a waste rock blocking hydraulic support, the rear of the hydraulic support is connected with the top beam and the base through the shield beam, the front connecting rod and the rear connecting rod, the side face of the hydraulic support is connected with the top beam and the base through the side shield beam, the front lower swing rod, the rear lower swing rod and the bidirectional connector, the shield beam and the side shield beam respectively block waste rocks at the rear and the side face of the hydraulic support from entering the inside of the support, and when the top beam above the hydraulic support collapses, the shield beam and the side shield beam respectively block the waste rocks at the rear and the side face of the hydraulic support from entering the inside of the support. The waste rock blocking hydraulic support can be matched with a working face hydraulic support in the process of gob-side entry retaining, can be used independently, can block waste rock in a goaf from entering a roadway of the gob-side entry retaining, and is particularly suitable for gob-side entry retaining operation of a coal mine underground working face.

Description

Hydraulic support for retaining waste rock
Technical Field
The invention belongs to the technical field of coal mine safety support, and particularly relates to a waste rock blocking hydraulic support which is suitable for coal mine working face safety support engineering operation.
Background
The coal mine fully-mechanized mining face is supported by a hydraulic support, and the hydraulic support creates a good operation environment for safe mining of the face. For the gob-side entry retaining working face, because the gob-side entry retaining working area is located at the rear part of the working face, a certain number of gangue blocking supports need to be arranged at the rear part of the transition support, and the gangue blocking supports are mainly used for bearing the load of a top plate of the near roadway area of the working face and providing a working space for the gob-side entry retaining. Because the waste rock blocking support is located the collecting space area, its rear portion and side all are the caving waste rock that the roof destroyed back formed, for this reason, the waste rock blocking support need set up side direction waste rock blocking device, prevents that side direction and rear portion caving waste rock from getting into inside the support, influences waste rock blocking support normal operating.
The invention patent (application number: 201810427480.8) discloses a gangue blocking support for a gob-side entry of a thin coal seam, wherein an upper gangue blocking plate and a lower gangue blocking plate are arranged on the side surfaces of 1-5 support units which are sequentially connected, the upper gangue blocking plate and the lower gangue blocking plate are connected with a top beam and a base, and the upper gangue blocking plate and the lower gangue blocking plate are overlapped and superposed with each other to achieve the aim of gangue blocking. The largest defect of the waste rock blocking device is that the height adjusting range of the hydraulic support is limited, and because the height of the upper and lower waste rock blocking plates cannot exceed the minimum height of the hydraulic support, when the maximum height of the hydraulic support exceeds 2 times of the minimum height of the hydraulic support, the upper and lower waste rock blocking plates cannot be superposed, so that the purpose of blocking waste rock cannot be achieved.
The invention patent 201110275923.4 discloses a hydraulic support waste rock blocking device, wherein a waste rock blocking device is arranged in front of a hydraulic support, a wire mesh is used as a protective net, and the protective net can be opened and retracted.
Patent 201721488065.0 discloses a hydraulic support waste rock blocking curtain, and the device sets up two waste rock blocking devices in hydraulic support's side, and first waste rock blocking device is articulated with the back timber, and second waste rock blocking device moves about the vertical direction of first waste rock blocking device to increase side direction waste rock blocking area. The biggest problem of the device lies in that the base should not have the waste rock blocking device, and the goaf caving waste rock accessible base gets into inside the support, influences hydraulic support and normally works.
The invention patent (application number: 201810597364.0) discloses a waste rock blocking and net laying device and a waste rock blocking and net laying method, wherein a waste rock blocking net is used for blocking waste rocks, the waste rock blocking net is arranged in a goaf behind a vertical support above a top beam, the device mainly solves the problem of blocking waste rocks in the rear space of a hydraulic support, and the waste rock blocking and net laying device and the waste rock blocking and net laying method cannot achieve lateral waste rock blocking.
The invention patent 201610303147.7 discloses a crushed stone filling gob-side entry retaining gangue blocking device, which is characterized in that a plurality of gangue blocking plates are arranged on the side surface of a support, the gangue blocking plates are fixed by utilizing a positioning mechanism, and a telescopic mechanism is arranged in the front-back direction of the gangue blocking plates to block gangue in a goaf from entering a gob-side entry retaining roadway.
The invention patent (application number: 201810696763.2) discloses a stack type support with adjustable multi-stage waste rock blocking plates, the device is provided with the multi-stage adjustable waste rock blocking plates on the side surfaces of the stack type support, a first-stage waste rock blocking plate and a third-stage waste rock blocking plate are respectively fixed on a top beam and a bottom plate through bolts, a second-stage waste rock blocking plate is connected with the second-stage waste rock blocking plate through a jack, the second-stage waste rock blocking plate has a certain adjusting function, and the device has the problems that the weight of a lateral device is large, and the partial loading amount of the support is increased.
In order to overcome the defects of the technology, an efficient hydraulic support waste rock blocking device is urgently needed.
Disclosure of Invention
The invention aims to provide an effective waste rock blocking device for a coal mine hydraulic support, and aims to solve the problem of lateral waste rock blocking of the hydraulic support behind a gob-side entry retaining transition support.
The technical scheme is as follows: according to the hydraulic support for blocking the waste rock, the rear part and the side surface of the support are respectively provided with the shield beam and the side protection beam, and when a top plate above the hydraulic support collapses, the shield beam and the side protection beam respectively block the waste rock at the rear part and the side surface of the hydraulic support from entering the support, so that the purpose of blocking the waste rock is achieved.
The invention is provided with a longitudinal stabilizing mechanism and a transverse stabilizing mechanism, wherein the longitudinal direction utilizes a right connecting rod and a left connecting rod as the longitudinal stabilizing mechanism, the transverse direction utilizes a front lower swing rod and a rear lower swing rod as the transverse stabilizing mechanism, and the hydraulic support improves the anti-unbalance loading capacity of the hydraulic support through the longitudinal stabilizing mechanism and the transverse stabilizing mechanism.
The invention is provided with the bidirectional connector, when the top beam swings up and down, the side guard beam is not restrained, and the hydraulic support has strong adaptability.
The invention not only solves the lateral waste rock blocking problem of the hydraulic support, but also improves the lateral stability and lateral stability of the hydraulic support, and can be used for blocking waste rock of the roadway tail support of the underground gob-side entry retaining and can also be used for blocking waste rock of the end support.
The invention has the following advantages:
(1) the hydraulic support has stabilizing mechanisms in the longitudinal direction and the transverse direction, and the hydraulic support is strong in unbalance loading resistance.
(2) The hydraulic support is laterally and transversely provided with a waste rock blocking mechanism, and the waste rock blocking effect of the hydraulic support is good.
(3) The hydraulic support is provided with a bidirectional connector, the top beam has the capability of swinging up and down, and the hydraulic support has strong adaptability.
Drawings
FIG. 1 is a schematic diagram of the present invention.
In the figure, 1: top beam, 2: two-way connector, 3: shield beam, 4: rear link, 5: front connecting rod, 6: base, 7: rear lower swing link, 8: front lower swing link, 9: side guard beam
Fig. 2 is a schematic view of the header side ear panels of the present invention.
In the figure, 1-1: ear plate
Fig. 3 is a schematic view of a base lateral ear plate of the present invention.
6-1: right rear ear panel, 6-2: right middle ear plate, 6-3: left middle ear plate, 6-4: left front ear plate
Fig. 4 is a schematic view of the upper and lower ear plates of the side bolster of the present invention.
9-1: upper left ear panel, 9-2: upper right ear plate, 9-3: right rear ear panel, 9-4: right middle ear plate, 9-5: left middle ear plate, 9-6: left front ear plate
Fig. 5 is a schematic diagram of the bi-directional connector of the present invention.
Fig. 6 is a schematic structural diagram of the hydraulic support when the top beam swings a certain angle laterally.
Detailed description of the preferred embodiments.
Embodiments of the invention are further described below with reference to the following drawings:
as shown in figure 1, a waste rock blocking hydraulic support comprises a top beam (1), a two-way connector (2), a shield beam (3), a rear connecting rod (4), a front connecting rod (5), a base (6), a rear lower swing rod (7), a front lower swing rod (8) and a side guard beam (9), wherein the rear connecting rod (4), the front connecting rod (5), the rear lower swing rod (7) and the front lower swing rod (8) are respectively longitudinal and transverse stabilizing mechanisms of the waste rock blocking hydraulic support, the waste rock blocking hydraulic support is longitudinally connected with the shield beam (3) and the base (6) through the rear connecting rod (4) and the front connecting rod (5), the waste rock blocking hydraulic support is transversely connected with the side guard beam (9) and the base (6) through the rear lower swing rod (7) and the front lower swing rod (8), the side guard beam (9) is connected with the top beam (1) through the two-way connector (2), when a top plate above the hydraulic support collapses, waste rock at the rear part and the side face of the hydraulic support are respectively blocked by the shield beam (3) and the side guard beam (9), the purpose of stopping the gangue is achieved.
As shown in figure 2, the side surface of the top beam (1) is provided with an ear plate (1-1) which is connected with the bidirectional connector (2) through the ear plate (1-1).
As shown in figure 3, the side surface of the base is provided with a right rear ear plate (6-1), a right middle ear plate (6-2), a left middle ear plate (6-3) and a left front ear plate (6-4), the right rear ear plate (6-1) and the right middle ear plate (6-2) are connected with a rear lower swing rod (7), and the left middle ear plate (6-3) and the left front ear plate (6-4) are connected with a front lower swing rod (8).
As shown in figure 4, a left upper ear plate (9-1) and a right upper ear plate (9-2) above the side guard beam (9) are connected with the bidirectional connector (2), and a right rear ear plate (9-3), a right middle ear plate (9-4), a left middle ear plate (9-5) and a left front ear plate (9-6) below the side guard beam (9) are respectively connected with the rear lower swing rod (7) and the front lower swing rod (8).
As shown in FIG. 5, the upper and lower pin holes of the bi-directional joint (2) are perpendicular to each other.
As shown in fig. 6, because the two-way connector (2) is arranged on the side stabilizing mechanism of the top beam (1), when the top beam swings up and down, the side protecting beam (9) is not restrained, and the hydraulic support has strong adaptability.
The above-mentioned embodiments are intended to describe the effective implementation of the present invention, and not to limit the scope of the present invention, and various modifications and improvements made by the engineer without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (4)

1. A waste rock blocking hydraulic support comprises a top beam (1), a two-way connector (2), a shield beam (3), a rear connecting rod (4), a front connecting rod (5), a base (6), a rear lower swing rod (7), a front lower swing rod (8) and a side guard beam (9), wherein the rear connecting rod (4), the front connecting rod (5), the rear lower swing rod (7) and the front lower swing rod (8) are respectively longitudinal and transverse stabilizing mechanisms of the waste rock blocking hydraulic support, the waste rock blocking hydraulic support is longitudinally connected with the shield beam (3) and the base (6) through the rear connecting rod (4) and the front connecting rod (5), the waste rock blocking hydraulic support is transversely connected with the side guard beam (9) and the base (6) through the rear lower swing rod (7) and the front lower swing rod (8), the side guard beam (9) is connected with the top beam (1) through the two-way connector (2), and when a top plate above the hydraulic support falls down, the waste rock behind and the hydraulic support are respectively blocked by the shield beam (3) and the side beam (9) and enter the hydraulic support, the purpose of stopping the gangue is achieved.
2. The waste rock blocking hydraulic support is characterized in that: the rear connecting rod (4) and the front connecting rod (5) are longitudinal stabilizing mechanisms of a waste rock blocking hydraulic support, the rear lower swing rod (7) and the front lower swing rod (8) are transverse stabilizing mechanisms of the waste rock blocking hydraulic support, and the waste rock blocking hydraulic support improves the stability and the adaptability of the hydraulic support through the longitudinal stabilizing mechanisms and the transverse stabilizing mechanisms.
3. The waste rock blocking hydraulic support is characterized in that: the hydraulic support is longitudinally connected with a shield beam (3) and a base (6) through a pin shaft by a rear connecting rod (4) and a front connecting rod (5), the hydraulic support is transversely connected with a top beam (1) and the base (6) through a side shield beam (9), a front lower swing rod (8) and a rear lower swing rod (9) through a pin shaft, and when the top beam above the hydraulic support collapses, the shield beam (2) and the side shield beam (9) respectively block gangue behind and on the side of the hydraulic support from entering the inside of the hydraulic support.
4. The waste rock blocking hydraulic support is characterized in that: the bidirectional connector (2) is connected with a side ear plate (1-1) of the top beam (1) and a left upper ear plate (9-1) and a right upper ear plate (9-2) above the side guard beam (9) through a pin shaft, two ends of a rear lower swing rod (7) are respectively connected with a right rear lug plate (9-3) and a right middle lug plate (9-4) below the side guard beam (9) and a right rear lug plate (6-1) and a right middle lug plate (6-2) on the side surface of the base through pin shafts, two ends of a front lower swing rod (8) are respectively connected with a left middle lug plate (9-5) and a left front lug plate (9-6) below the side guard beam (9) and a left middle lug plate (6-3) and a left front lug plate (6-4) on the side surface of the base through pin shafts, an upper pin hole and a lower pin hole of a bidirectional connector (2) are mutually vertical, and the top beam (1) has the up-down swinging capability.
CN201911213707.XA 2019-12-02 2019-12-02 Hydraulic support for retaining waste rock Active CN110925005B (en)

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Application Number Priority Date Filing Date Title
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CN110925005B CN110925005B (en) 2021-07-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111706378A (en) * 2020-06-28 2020-09-25 中煤科工开采研究院有限公司 Hydraulic support for end of thin coal seam
CN113074011A (en) * 2021-04-22 2021-07-06 天地科技股份有限公司 Gob-side entry retaining filling and supporting system for coal mine broken roof fully-mechanized coal mining face

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL203182B1 (en) * 2003-12-19 2009-09-30 Hornonitrianske Bane Prievidza Section of mining self-advancing support and section unit for mining self-advancing support
CN201851142U (en) * 2010-11-14 2011-06-01 林州重机集团股份有限公司 Large-tilt-angle hydraulic support
CN203717008U (en) * 2014-02-18 2014-07-16 陕西开拓建筑科技有限公司 Gangue blocking top cutting deviation correcting self moving gob-side entry retaining hydraulic support frame
CN105952489A (en) * 2016-04-12 2016-09-21 安徽省宿州市龙华机械制造有限公司 Anti-side-pressure guide rail slip type advancing and end hydraulic support
CN108374684A (en) * 2018-05-10 2018-08-07 陕西陕煤黄陵矿业有限公司 Fully-mechanized mining working faces end head abnormal shape support apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL203182B1 (en) * 2003-12-19 2009-09-30 Hornonitrianske Bane Prievidza Section of mining self-advancing support and section unit for mining self-advancing support
CN201851142U (en) * 2010-11-14 2011-06-01 林州重机集团股份有限公司 Large-tilt-angle hydraulic support
CN203717008U (en) * 2014-02-18 2014-07-16 陕西开拓建筑科技有限公司 Gangue blocking top cutting deviation correcting self moving gob-side entry retaining hydraulic support frame
CN105952489A (en) * 2016-04-12 2016-09-21 安徽省宿州市龙华机械制造有限公司 Anti-side-pressure guide rail slip type advancing and end hydraulic support
CN108374684A (en) * 2018-05-10 2018-08-07 陕西陕煤黄陵矿业有限公司 Fully-mechanized mining working faces end head abnormal shape support apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111706378A (en) * 2020-06-28 2020-09-25 中煤科工开采研究院有限公司 Hydraulic support for end of thin coal seam
CN113074011A (en) * 2021-04-22 2021-07-06 天地科技股份有限公司 Gob-side entry retaining filling and supporting system for coal mine broken roof fully-mechanized coal mining face

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