CN113047886A

CN113047886A - Mining flexible hydraulic support that hides

Info

Publication number: CN113047886A
Application number: CN202110483663.3A
Authority: CN
Inventors: 王洪英; 石洪起; 陈志才; 徐兴强
Original assignee: Beijing Huibo Anti Scour Support Technology And Equipment Research Institute; Hebei Chengtian Hengye Coal Mine Equipment Co ltd; Beijing Chengtian Hengye Colliery Equipment Co ltd
Current assignee: Beijing Huibo Anti Scour Support Technology And Equipment Research Institute; Hebei Chengtian Hengye Coal Mine Equipment Co ltd; Beijing Chengtian Hengye Colliery Equipment Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-06-29

Abstract

The invention discloses a mining prop flexible hydraulic support which comprises a top beam, a connecting beam and a bottom beam, wherein two ends of the connecting beam are respectively hinged with one end of the top beam and one end of the bottom beam, the front end part of the top beam is contacted with a top plate of a working area, the bottom beam is contacted with a bottom plate of the working area, first telescopic pillars respectively hinged with the top beam and the bottom beam are arranged between the top beam and the bottom beam, second telescopic pillars respectively hinged with the top beam and the connecting beam are arranged between the top beam and the connecting beam, the top beam, the connecting beam and the bottom beam form a multi-fold beam group, and the beam group surrounds a space for working personnel to work. According to the invention, a sufficient space for workers to work is constructed through a multi-fold beam group structure, the angle between the top beam and the connecting beam and the distance between the top beam and the bottom beam are controlled by controlling the extension and retraction of the two telescopic struts, so that the top plate is effectively supported, the movement of the whole hydraulic support is controllable, and the supporting capability of the whole hydraulic support is stronger under the supporting effect of the two telescopic struts between the supporting top plate and the bottom plate.

Description

Mining flexible hydraulic support that hides

Technical Field

The invention belongs to the technical field of mining hydraulic support, and particularly relates to a mining prop flexible hydraulic support which is used for mining a steep coal seam.

Background

At present, the mining and supporting technology of the steep coal seam roughly comprises heavy stack type hydraulic support machine mining, miner steel flexible shield support blasting mining, flexible shield hydraulic support machine blasting mining and the like. The heavy stack type hydraulic support machine mining is suitable for mining medium and thick coal seams with inclination angles below 60 degrees; the steel flexible shield support for miners is suitable for mining coal seams with the medium and thick coal seams of more than 50 degrees; the flexible shield hydraulic support machine blasting mining is suitable for mining coal seams with the medium thickness of more than 1.5 meters and the thickness of the coal seam of more than 50 degrees. For coal seam mining support with the inclination angle of below 50 degrees and the thickness of below 1.5 meters, heavy stack type hydraulic supports have the defects of heavy equipment, difficulty in carrying, narrow space under the supports, downward sliding of the supports and the like, steel soft shield supports of miners have the problems of extremely narrow ventilation section and pedestrian space, flexible shield hydraulic supports also have the defects of narrow space and unstable support state and easy overhead support, in a word, the three supports are difficult to solve the coal seam mining support problem with the inclination angle of below 50 degrees or the coal thickness of below 1.5 meters, and therefore, the research and development of a new support technology suitable for coal seam mining under the conditions is eagerly and necessary.

Disclosure of Invention

Therefore, the invention provides a mining prop flexible hydraulic support for solving the problem of mining support of a coal seam with an inclination angle of less than 50 degrees or a coal thickness of less than 1.5 meters.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a mining prop up and cover flexible hydraulic support, hydraulic support includes back timber, tie-beam and floorbar, the both ends of tie-beam respectively with the one end of back timber with the one end of floorbar is articulated, the preceding tip of back timber contacts with work area's roof, the floorbar contacts with work area's bottom plate, the back timber with be equipped with respectively with the first flexible pillar of the two looks articulated between the floorbar, the back timber with be equipped with respectively with the two second flexible pillar of articulated mutually between the tie-beam, back timber, tie-beam and floorbar form the roof beam group of many folds, the roof beam group encloses into a space that supplies the staff work.

Preferably, the top beam is provided with at least one connecting seat for connecting a plurality of hydraulic supports in series, and the adjacent hydraulic supports form flexible connection through connectors between the supports.

Preferably, the back timber is three folding beam body structures, its include with the work area the roof first section that contacts, middle part support section with the one end looks articulated linkage segment of tie-beam, the upper end of the flexible pillar of second with the rear end of first section is articulated, the upper end of first flexible pillar with the front end of first section is articulated.

Preferably, the bending angle formed by the three-folded beam body structure on the top beam is larger than 90 degrees.

More preferably, the bending angle formed by the three-folded beam body structure on the top beam is 120-150 degrees.

Furthermore, at least one section of the first section, the middle supporting section and the connecting section is provided with at least one connecting seat used for connecting the plurality of hydraulic supports in series.

Further preferably, the first section of back timber is separated for the first section I of front end and the first section II two parts of rear end, first section I with connect through flexible structure between first section II, first section I with first flexible pillar is articulated, first section II with the flexible pillar of second is articulated.

The flexible structure including set up in the articulated seat I of first section I tip, set up in the articulated seat II and the pillar connecting piece of first section II tip, the both ends of pillar connecting piece respectively with articulated seat I and articulated seat II articulated mutually.

The connecting beam is also provided with at least one connecting seat for forming flexible series connection of a plurality of hydraulic supports.

And the first telescopic support column and the second telescopic support column are both hydraulic jacks.

The technical scheme of the invention has the following beneficial effects:

A. the multi-fold hydraulic support is provided with the multi-fold top beam, the connecting beam and the bottom beam, the top beam and the connecting beam support are provided with the second telescopic strut which is hinged, the first telescopic strut which is hinged is arranged between the top beam and the bottom beam, and the angle between the top beam and the connecting beam and the distance between the top beam and the bottom beam are controlled by controlling the telescopic motion of the two telescopic struts, so that the top plate is effectively supported, the whole hydraulic support is controllable to move, and the supporting capacity is stronger under the supporting action of the two telescopic struts which support the top plate and the bottom plate.

B. According to the invention, by arranging the multi-folding top beam structure, a space for workers to work is formed among the top beam, the connecting beam and the bottom beam, so that the working space is larger and more convenient; meanwhile, the hydraulic support moves after being unloaded by contracting the second telescopic strut and the first telescopic strut, and controllable movement of the hydraulic support is realized. Top beam, tie-beam, floorbar, first flexible pillar and second flexible pillar have realized the full shield to the exploitation space that changes in certain extent, have realized the effective support to the roof with floorbar and the articulated first flexible pillar of top beam to, realized jointly that to the comprehensive protection in exploitation space.

C. The first section is divided into the first section I and the first section II, and the first section I and the first section II are connected by adopting the flexible structure, so that the influence between the first telescopic strut and the second telescopic strut can be reduced, the unloading of the first section of the support is conveniently realized, and the operation performance of the hydraulic support is improved. In addition, the top plate of the working space has certain concave-convex change, and after the first section is divided into two sections by one section, the contact tightness between the first section and the top plate can be increased, and the supporting performance of the hydraulic support is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.

FIG. 1 is a schematic view of a first hydraulic mount according to the present invention;

FIG. 2 is a schematic diagram of a second hydraulic mount according to the present invention;

FIG. 3 is a schematic structural view of a third hydraulic mount provided in accordance with the present invention;

fig. 4 is a schematic structural diagram of the hydraulic support in the working state.

Description of reference numerals:

1-top beam

11-first, 11 a-first, I, 11 b-first II

12-middle support section

13-connecting segment

2-connecting the beams; 3-a bottom beam; 4-a working area; 5-a top plate; 6-base plate

7-a first telescopic strut; 8-a second telescopic strut; 9-connecting seat

10-flexible structure

10 a-hinge base I, 10 b-hinge base II, 10 c-strut connector.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the system or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and fig. 3, the invention provides a mining prop flexible hydraulic support, which comprises a top beam 1, a connecting beam 2 and a bottom beam 3, wherein two ends of the connecting beam 2 are respectively hinged with one end of the top beam 1 and one end of the bottom beam 3, the front end part of the top beam 1 is contacted with a top plate 5 of a working area 4, the bottom beam 3 is contacted with a bottom plate 6 of the working area 4, first telescopic struts 7 respectively hinged with the top beam 1 and the bottom beam 3 are arranged between the top beam 1 and the bottom beam 3, the telescopic action of the first telescopic struts 7 can drive the bottom beam 3 to rotate relative to the connecting beam 2, second telescopic struts 8 respectively hinged with the top beam 1 and the connecting beam 2 are arranged between the top beam 1 and the connecting beam 2, the telescopic action of the second telescopic struts 8 can adjust the included angle between the main beam 1 and the beam body 2, the top beam 1, the connecting beam 2 and the bottom beam 3 form a multi-folded beam group, the beam group forms, the other parts of the top beam 1 and the connecting beam 2 jointly isolate the goaf, and prevent waste rocks in the goaf from entering a working space.

The first telescopic strut 7 and the second telescopic strut 8 are hydraulic jacks, and other controllable supporting structures can be adopted.

The top beam 1 shown in fig. 1 is a three-folding beam structure, and comprises a first section 11 contacting with the top plate 5 of the working area 4, a middle supporting section 12 and a connecting section 13 hinged with one end of the connecting beam 2, the upper end of the second telescopic strut 8 is hinged with the rear end of the first section 11, and the upper end of the first telescopic strut 7 is hinged with the front end of the first section 11. The three-fold beam structure on the top beam 1 forms a bending angle of more than 90 degrees, preferably 120-150 degrees.

In order to facilitate the series connection of a plurality of groups of hydraulic supports, at least one connecting seat 9 for forming flexible series connection of a plurality of hydraulic supports is arranged on the top beam 1, for example, at least one connecting seat 9 for series connection of a plurality of hydraulic supports is respectively arranged on at least one of the first section 11, the middle supporting section 12 and the connecting section 13 of the top beam 1. An inter-frame connecting piece (not marked in the figure) is arranged in the connecting seat 9, and the inter-frame connecting piece is connected with the connecting seat 9 by a pin shaft. The top beam 1 in fig. 1 is provided with two connecting seats 9 which are respectively arranged on a first section 11 and a middle support section 12; in the hydraulic support structure shown in fig. 2, a connecting base 9 is further arranged on the connecting beam 2, a plurality of hydraulic supports are connected with the connecting base 9 in a combined manner through connectors between the supports in the working face to form a flexible supporting whole, and the number of the connecting bases is preferably 3. In addition, the number and the positions of the connecting seats 9 are not limited to the schemes provided in the above embodiments, and other different schemes may be provided, which are not described herein again.

As shown in fig. 3, the first section 11 of the top beam 1 is further preferably divided into a front first section I11a and a rear first section II11b, the first section I11a is connected with the first section II11b through a flexible structure 10, the first section I11a is hinged with the first telescopic strut 7, and the first section II11b is hinged with the second telescopic strut 8. The flexible structure 10 here preferably comprises a hinge base I10a arranged at the end of the first section I11a, a hinge base II10b arranged at the end of the first section II11b, and a strut connecting member 10c, both ends of the strut connecting member 10c being hinged to the hinge base I10a and the hinge base II10b, respectively. Adopt flexible construction to connect the first section I11a of front end and the first section II11b of rear end, can reduce the influence each other of first telescopic strut and second telescopic strut, the uninstallation of convenient operation realization support first section improves hydraulic support's operating behavior. In addition, the top plate of the working space has certain concave-convex change, and after the first section is divided into two sections by one section, the contact tightness between the first section and the top plate can be increased, and the supporting performance of the hydraulic support is improved.

The specific operating conditions of the hydraulic support are as follows:

through operating the hydraulic system, control first telescopic prop 7 and the stretching out and retracting of second telescopic prop 8 respectively, can adjust distance and contained angle between back timber 1 and the floorbar 3 to the thickness change of adaptation working face coal seam and the angle change of working face roof and bottom plate make hydraulic support can support between the roof and the bottom plate of working face in a controllable way. When the hydraulic support needs to be moved, the contraction of the first telescopic strut 7 and the second telescopic strut 8 is controlled, the top beam and the bottom beam of the hydraulic support and the top plate and the bottom plate of a working area are in a non-supporting state, the hydraulic support can slide downwards along the top plate and the bottom plate under the pushing of the self gravity and waste rock in a goaf at the upper part of the hydraulic support, the hydraulic support is pulled to be in a stop state after the hydraulic support is tensioned with an inter-frame connecting piece of an adjacent hydraulic support, the first telescopic strut 7 and the second telescopic strut 8 are controlled to stretch out by operating a hydraulic system at the moment, and the top beam 1 and the bottom beam 3 of the hydraulic support can support the top plate and the bottom plate of. All the hydraulic supports are operated in sequence to finish one-time movement of the whole support system, and one pushing circulation of the hydraulic supports on the working face is finished.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims

1. A mining prop flexible hydraulic support is characterized by comprising a top beam (1), a connecting beam (2) and a bottom beam (3), two ends of the connecting beam (2) are respectively hinged with one end of the top beam (1) and one end of the bottom beam (3), the front end part of the top beam (1) is contacted with a top plate (5) of a working area (4), the bottom beam (3) is in contact with a bottom plate (6) of the working area (4), a first telescopic strut (7) which is respectively hinged with the top beam (1) and the bottom beam (3) is arranged between the top beam and the bottom beam, a second telescopic strut (8) which is respectively hinged with the top beam (1) and the connecting beam (2) is arranged between the top beam and the connecting beam, the top beam (1), the connecting beam (2) and the bottom beam (3) form a multi-fold beam set, and the beam set forms a space for workers to work.

2. The mining prop flexible hydraulic support according to claim 1, characterized in that the top beam (1) is provided with at least one connecting seat (9) for connecting a plurality of hydraulic supports in series, and adjacent hydraulic supports form a flexible connection through an inter-support connecting piece.

3. The mining prop flexible hydraulic support according to claim 2, characterized in that the top beam (1) is a three-fold beam structure comprising a first section (11) in contact with the top plate (5) of the working area (4), a middle support section (12) and a connecting section (13) hinged to one end of the connecting beam (2), the upper end of the second telescopic strut (8) is hinged to the rear end of the first section (11), and the upper end of the first telescopic strut (7) is hinged to the front end of the first section (11).

4. The mining prop flexible hydraulic support according to claim 3, characterized in that the three-folded beam body structure on the top beam (1) forms a bending angle greater than 90 °.

5. The mining prop flexible hydraulic support according to claim 4, characterized in that the bending angle formed by the three-folded beam body structure on the top beam (1) is 120-150 °.

6. A mining prop flexible hydraulic support according to claim 5, characterized in that at least one of the first section (11), the middle support section (12) and the connection section (13) is provided with at least one connection seat (9) for a plurality of hydraulic supports in series.

7. The mining prop flexible hydraulic support according to claim 6, characterized in that the first section (11) of the top beam (1) is divided into a front first section I (11a) and a rear first section II (11b), the first section I (11a) and the first section II (11b) are connected through a flexible structure (10), the first section I (11a) is hinged to the first telescopic strut (7), and the first section II (11b) is hinged to the second telescopic strut (8).

8. The mining prop flexible hydraulic support according to claim 7, wherein the flexible structure (10) comprises a hinge base I (10a) arranged at the end of the first section I (11a), a hinge base II (10b) arranged at the end of the first section II (11b), and a prop connecting piece (10c), and both ends of the prop connecting piece (10c) are respectively hinged with the hinge base I (10a) and the hinge base II (10 b).

9. A mining prop flexible hydraulic support according to any one of claims 2-8, characterized in that the connecting beam (2) is further provided with at least one connecting seat (9) for a plurality of hydraulic supports to form a flexible series connection.

10. The mining prop flexible hydraulic support according to claim 1, characterized in that the first telescopic prop (7) and the second telescopic prop (8) are hydraulic jacks.