CN211924210U

CN211924210U - Steep door-shaped support

Info

Publication number: CN211924210U
Application number: CN202020303725.9U
Authority: CN
Inventors: 张银亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-13
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a steeply inclined portal frame, which is the most important equipment in the horizontal mechanized coal mining method of steeply inclined coal seams, provides possibility for realizing mechanized mining of 2-9 m steeply inclined (inclination angle 55-90 degrees) coal seams, and marks that the mining of the coal seams enters a mechanized and automatic mining stage; it includes: the structure comprises a top beam, an upper shield beam, a lower shield beam and a bottom beam, wherein the top beam, the upper shield beam, the lower shield beam and the bottom beam are sequentially connected to form a door-shaped structure; the hydraulic part is connected to the inner side of the structural part and used for supporting the structural part; the accessory comprises pushing frames, an anti-falling mechanism and a limiting device, wherein the pushing frames are respectively connected to the inner side of the top beam and the inner side of the bottom beam.

Description

Steep door-shaped support

Technical Field

The utility model belongs to the technical field of coal mining equipment, specifically speaking relates to a steeply inclined door-shaped support.

Background

The coal mining equipment is designed according to the occurrence conditions of coal underground and the coal mining method determined by the occurrence conditions. The steeply inclined coal seam accounts for 4% of the total reserve of coal resources in China, and has wide distribution, complex occurrence conditions and a large number of mines. For a steeply inclined coal seam with an inclination angle of 45-55 degrees, some mines adopt high-grade general mining and fully mechanized mining technologies along with the development of coal mining technologies; for a steep inclined coal seam with an inclination angle larger than 55 degrees and a large coal seam thickness, a common horizontal subsection top coal caving coal mining method is mature day by day; and for a steeply inclined coal seam with an inclination angle of 55-90 degrees and a coal seam thickness of 2-9 m, mechanized mining is not realized. For a long time, a large amount of research and development work is carried out on the coal seams, various coal mining methods are provided, but the efficiency is low, the cost is high, the safety pressure is extremely high, and if proper mechanical mining methods and mining equipment are not found as soon as possible, the mining is stopped and abandoned due to policy pressure, and further, a large amount of coal resources are wasted.

Traditionally, the support equipment used for mining the steep coal seam mainly comprises a flexible shield support, a single hydraulic prop and a suspended top beam hydraulic support. The flexible shield support is mainly used for a pseudo-pitch flexible shield support coal mining method, is suitable for a steep blast mining working face, and has a lagged coal dropping process; the forward movement of the single hydraulic prop is completed manually, the labor intensity of workers is high, the safety is poor, the production efficiency is low, and the prop is easy to sink into the bottom plate; the exposed top plate area after the top beam of the suspended top beam hydraulic support is unloaded is large, so that the falling is easy to cause, and the self-stability is poor. The supporting equipment has limitations of the supporting equipment, and in order to realize horizontal mechanized mining of the steeply inclined coal seam, the supporting equipment with high safety, high efficiency and high degree of mechanization is needed to meet the supporting requirement of a working face and improve the production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model discloses a steeply inclined door-shaped support is the most important equipment in the mechanized coal mining method of steeply inclined coal seam level, provides possibility for realizing the mechanized mining of 2-9 m steeply inclined (inclination angle 55-90 °) coal seam, marks that the mining of this kind of coal seam enters into mechanized and automatic mining stage; it includes:

a structural member comprising a top beam, an upper shield beam, a lower shield beam, and a bottom beam;

the hydraulic part comprises a supporting jack, a stand column and an adjusting jack;

the accessory comprises a pushing frame, an anti-falling mechanism and a limiting device.

Preferably, the top beam, the upper shield beam, the lower shield beam and the bottom beam are sequentially hinged to form a door-shaped structure.

Preferably, the support jack connect respectively in the back timber is kept away from last screen roof beam lower extreme and the bottom sill is kept away from down screen roof beam lower extreme, the stand both ends connect respectively in the back timber inboard and the bottom sill is inboard, adjust the jack connect respectively in back timber and last screen roof beam hinged end and screen roof beam and bottom sill hinged end down.

Preferably, the method further comprises the following steps:

and the four tilting prevention mechanisms are respectively connected to the inner side of the top beam and the inner side of the bottom beam.

Preferably, the method further comprises the following steps:

the number of the pushing jacks is two, and the two pushing jacks are respectively connected to the inner side of the top beam and the inner side of the bottom beam.

Preferably, the method further comprises the following steps:

and the limiting devices are eight and are respectively connected in the top beam and the bottom beam.

Preferably, the number of the pushing frames is two, and the two pushing frames are respectively connected to the inner side of the top beam and the inner side of the bottom beam.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a side view of the hydraulic support assembly of the present invention;

fig. 3 is a layout diagram of the working surface of the hydraulic support of the present invention.

In the figure: 1. supporting the jack; 2. a top beam; 3. a pushing frame; 4. pushing a jack; 5. a column; 6. adjusting the jack; 7. an upper shield beam; 8. a lower shield beam; 9. a bottom beam; 10. a limiting device; 11. an anti-falling mechanism.

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 only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the steep door-shaped bracket provided in this embodiment includes:

the structural part comprises a top beam 2, an upper shield beam 7, a lower shield beam 8 and a bottom beam 9, wherein the top beam 2, the upper shield beam 7, the lower shield beam 8 and the bottom beam 9 are sequentially connected to form a door-shaped structure,

the hydraulic part comprises a supporting jack 1, a stand column 5 and an adjusting jack 6, and is connected to the inner side of the structural part and used for supporting the structural part;

the annex, the annex is including advancing frame 3, preventing down mechanism 11, stop device 10, two it connects respectively to advance frame 3 in back timber 2 inboard and floorbar 9 is inboard, four prevent down mechanism 11 connect respectively in 2 inboard of back timber and floorbar 9 is inboard, eight stop device 10 connect respectively in the back timber 2 and in the floorbar 9.

In one embodiment, the top beam 2, the upper shield beam 7, the lower shield beam 8 and the bottom beam 9 are sequentially hinged, and the hydraulic parts are respectively connected to the hinged ends of the top beam 2 and the upper shield beam 7, the lower end of the top beam 2 far away from the upper shield beam 7, the hinged ends of the lower shield beam 8 and the bottom beam 9, the lower end of the bottom beam 9 far away from the lower shield beam 8, the inner side of the top beam 2 and the inner side of the bottom beam 9.

In one embodiment, the supporting jacks 1 are respectively connected to the lower ends of the top beams 2 far away from the upper shield beams 7 and the lower ends of the bottom beams 9 far away from the lower shield beams 8, the two ends of the upright columns 5 are respectively connected to the inner sides of the top beams 2 and the inner sides of the bottom beams 9, and the adjusting jacks 6 are respectively connected to the hinged ends of the top beams 2 and the upper shield beams 7 and the hinged ends of the lower shield beams 8 and the bottom beams 9.

The working principle and the beneficial effects of the technical scheme are as follows:

the utility model provides the most important equipment in the mechanized coal mining method of the level of the steeply inclined coal seam, which provides possibility for realizing the mechanized mining of the steeply inclined coal seam with the thickness of 2-9 m (the inclination angle is 55-90 degrees), marks that the mining of the coal seam enters the mechanized and automatic mining stages, a plurality of portal supports form a hydraulic support group to form a complete supporting system of the working face of the mechanized coal mining method of the steeply inclined coal seam level, adjacent portal supports are connected with a tilting prevention mechanism 11 through a limiting device 10 and adjust the working state of the hydraulic support group, each hydraulic support group consists of three portal supports, the three portal supports are respectively a left subframe A1, a right subframe A2 and a middle main frame B, push frame 3, push jack 4 and relative connecting piece, left subframe A1, right subframe A2 are connected through push frame 3, push frame 3 is connected with middle main frame B through push jack 4.

The top beam 2 is used for supporting a top plate, the pushing frame 3 is connected with a pushing jack 4 and used for pushing and pulling a hydraulic support, an upper shield beam 7 is hinged with a lower shield beam 8 to realize the adjustment of the height of the hydraulic support to adapt to the thickness of a coal seam, and simultaneously, the hydraulic support is used as a protective component to prevent gangue in a goaf from falling into a working surface, a bottom beam 9 is used for supporting a bottom plate, the supporting jack 1 is used for supporting the pressure of the hydraulic support on the upper goaf to prevent a portal-shaped support from sliding downwards, the pushing jack 4 is used for pushing and pulling a hydraulic support group to realize the movement of the hydraulic support group, the upright column 5 is a main supporting component of the hydraulic support group, the top beam 2 and the bottom beam 9 respectively play a supporting role on the top plate and the bottom plate of the working surface to delay the sinking of the top plate and ensure the safe working space of the working surface, the adjusting jack 6 is used for adjusting the angles between the top beam and the upper shield, the limiting device 10 is used for ensuring a reasonable gap between the hydraulic supports, and other hydraulic elements are all executing elements equipped for realizing the functions of the hydraulic supports.

In one embodiment, further comprising:

and the anti-falling mechanism 11 is connected to the inner side of the top beam 2 and the inner side of the bottom beam 9 respectively.

In one embodiment, further comprising:

the number of the pushing jacks 4 is two, and the two pushing jacks 4 are respectively connected to the inner side of the top beam 2 and the inner side of the bottom beam 9.

In one embodiment, further comprising:

the limiting device 10 is provided with eight limiting devices 10, and the eight limiting devices 10 are respectively connected into the top beam 2 and the bottom beam 9.

In one embodiment, two adjusting jacks 6 are provided, wherein one adjusting jack 6 is connected to the inner side of the top beam 2 and the inner side of the upper shield beam 7 at two ends, and the other adjusting jack 6 is connected to the inner side of the lower shield beam 8 and the inner side of the bottom beam 9 at two ends.

The utility model provides a pair of door shape support theory of operation and beneficial effect of steeply inclining do:

as shown in FIG. 3, the utility model provides a pair of steeply inclined door-shaped support, the working face roof is parallel with the working face bottom plate, and forms certain contained angle with the horizontal plane. The working face is horizontally arranged along the thickness direction of the coal seam, the hydraulic support group is vertically arranged along the inclined direction of the coal seam, the hydraulic support is supported on bottom coal through a support jack 1, the top beam 2 and the bottom beam 9 respectively support the top plate and the bottom plate of the working face, and an isolation barrier is formed after the upper shield beam 7 and the lower shield beam 8 are hinged to isolate the working face from the goaf. The coal cutter is positioned in the hydraulic support group, bottom coal is stripped in a layering mode, the hydraulic support group gradually moves downwards along with stripping of a coal bed, and mechanical circular mining is achieved.

The utility model discloses a move a sequence and be:

firstly, after the coal layer below the hydraulic support group is mined by the coal cutter, the supporting jack 1 is operated and retracted;

secondly, operating and retracting the upright post 5 connected with the left subframe A1 and the upright post 5 connected with the right subframe A2, and simultaneously extending two pushing jacks 4 to push out the adjacent left subframe A1 and right subframe A2 by a step distance;

thirdly, the supporting jacks 1 and the upright posts 5 of the left subframe A1 and the right subframe A2 extend out, and a top plate and a bottom plate are tightly supported;

fourthly, the supporting jack 1 of the middle main frame B is retracted;

fifthly, operating and withdrawing the upright post 5 of the middle main frame B, and withdrawing the two pushing jacks 4 to pull out the middle main frame B by a step pitch;

stretching out the supporting jack 1 and the upright post 5 of the middle main frame B and tightly supporting the top plate and the bottom plate to complete a working cycle, and adjusting the position of the hydraulic support group through the limiting device 10 and the anti-falling mechanism 11 in the frame moving process.

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 within the scope of the invention.

Claims

1. A steeply inclined portal support comprising:

the structural part comprises a top beam (2), an upper shield beam (7), a lower shield beam (8) and a bottom beam (9);

the hydraulic part comprises a supporting jack (1), a vertical column (5), an adjusting jack (6) and a pushing jack (4);

the accessory comprises a pushing frame (3), an anti-falling mechanism (11) and a limiting device (10).

2. A steeply inclined portal support according to claim 1, characterized in that the top beam (2), the upper shield beam (7), the lower shield beam (8) and the bottom beam (9) are hinged in sequence to form a portal structure.

3. A steeply inclined portal support according to claim 1, characterized in that the supporting jacks (1) are respectively connected to the lower end of the top beam (2) far from the upper shield beam (7) and the lower end of the bottom beam (9) far from the lower shield beam (8), the two ends of the upright (5) are respectively connected to the inner side of the top beam (2) and the inner side of the bottom beam (9), and the adjusting jacks (6) are respectively connected to the hinged ends of the top beam (2) and the upper shield beam (7) and the hinged ends of the lower shield beam (8) and the bottom beam (9).

4. The steeply inclined portal support of claim 1, further comprising:

and the four anti-falling mechanisms (11) are respectively connected to the inner side of the top beam (2) and the inner side of the bottom beam (9).

5. The steeply inclined portal support of claim 1, further comprising:

the pushing device comprises two pushing jacks (4), wherein the two pushing jacks (4) are respectively connected to the inner side of the top beam (2) and the inner side of the bottom beam (9).

6. The steeply inclined portal support of claim 1, further comprising:

the limiting device (10), limiting device (10) are equipped with eight, eight limiting device (10) connect respectively in back timber (2) and in floorbar (9).

7. A steeply inclined portal support according to claim 1, characterized in that there are two push frames (3), the two push frames (3) being connected to the inside of the top beam (2) and the inside of the bottom beam (9), respectively.