CN216305979U - Large-section thin coal seam hydraulic support suitable for soft bottom working face - Google Patents
Large-section thin coal seam hydraulic support suitable for soft bottom working face Download PDFInfo
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- CN216305979U CN216305979U CN202121717218.0U CN202121717218U CN216305979U CN 216305979 U CN216305979 U CN 216305979U CN 202121717218 U CN202121717218 U CN 202121717218U CN 216305979 U CN216305979 U CN 216305979U
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Abstract
The utility model provides a large-section thin coal seam hydraulic support suitable for a soft bottom working surface, wherein the bottom of a front upright post is fixed at the front end of a base, the top of the front upright post is fixed at the front end of a top beam, the bottom of a rear upright post is fixed at the rear end of the base, the top of the rear upright post is fixed at the rear end of the top beam, and a pedestrian passage is formed between the front upright post and the rear upright post; the part of the base and the top beam between the front and rear upright posts is of a high-strength solid plate structure; the bottom lifting mechanism is arranged at the front end of the base, the connecting piece comprises a pushing connecting lug, a push rod and a pushing connecting head, the pushing connecting lug is arranged at the front end of the base, one end of the pushing mechanism is connected with the pushing connecting lug, the other end of the pushing mechanism is connected with the tail of the push rod, and the head of the push rod is connected with the pushing connecting head. The base and the top beam of the hydraulic support are greatly lengthened, the area of the base is greatly increased, the specific pressure of the base is reduced, and meanwhile, the bottom lifting mechanism is arranged at the front end of the base, so that the phenomenon that the base pricks the bottom is avoided, the design of a pedestrian passage is safer, and the ventilation area is also increased.
Description
Technical Field
The utility model relates to the field of coal mines, in particular to a large-section low-coal-seam hydraulic support suitable for a soft-bottom working surface.
Background
The specific gravity of the total coal reserves of the thin coal seam in China is about 17.5%, and the mining of the thin coal seam is always a difficult problem of coal mining due to the difficult mining, low efficiency, poor working conditions and the like. Particularly, in the southwest area of China, the thin coal seam is a main mining coal seam, complex conditions such as soft bottom plate, high gas, extremely thin coal seam and the like generally exist, and mining difficulty is higher.
The thin coal seam supporting equipment is the key for improving the working efficiency and the safety, a roof is supported by mostly adopting a two-column shielding type hydraulic support at present, a pedestrian channel is positioned in the front of a big foot of a base, the length of the base is limited, the specific pressure of a bottom plate is high, and the base pricking condition is easy to occur when the bottom plate of a working face is soft, so that the propulsion of the working face is influenced.
In addition, when the gas content of the coal seam is high, a large ventilation section is needed on the working face, and the conventional two-column shielding type support is difficult to be long due to the fact that the supporting position is small, the ventilation section of the extremely thin coal seam is difficult to guarantee, and the safety of the mining environment is affected.
In order to solve the above problems, people are always seeking an ideal technical solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides the large-section low-coal-seam hydraulic support which is suitable for the soft-bottom working surface, the base and the top beam are greatly lengthened, the area of the base is greatly increased, the specific pressure of the base is reduced, meanwhile, the bottom lifting mechanism is arranged at the front end of the base, the base is prevented from being pricked, the pedestrian passage is safer in design, and the ventilation area is increased.
In order to achieve the purpose, the utility model adopts the technical scheme that: a large-section low-seam hydraulic support suitable for a soft-bottom working surface comprises a top beam, a base, two front upright columns, two rear upright columns, a pushing mechanism, a bottom lifting mechanism and a connecting piece, wherein the top beam is arranged on the base;
the bottom of the front upright post is fixed at the front end of the base, the top of the front upright post is fixed at the front end of the top beam, the bottom of the rear upright post is fixed at the rear end of the base, the top of the rear upright post is fixed at the rear end of the top beam, and a pedestrian passage is formed between the front upright post and the rear upright post;
the front end and the rear end of the base are arranged beyond the front upright post and the rear upright post, and the front end and the rear end of the top beam are arranged beyond the front upright post and the rear upright post;
the part of the base and the top beam between the front and rear upright posts is of a high-strength solid plate structure;
the bottom lifting mechanism is arranged at the front end of the base, the connecting piece comprises a pushing connecting lug, a push rod and a pushing connecting head, the pushing connecting lug is arranged at the front end of the base, one end of the pushing mechanism is connected with the pushing connecting lug, the other end of the pushing mechanism is connected with the tail of the push rod, and the head of the push rod is connected with the pushing connecting head.
The pushing mechanism is a pushing jack, the cylinder bottom of the pushing jack is hinged to the pushing connecting lug, and the piston rod end of the pushing jack is hinged to the tail end of the push rod.
Basically, the top beam and the base both adopt a profile structure with an inward concave middle part.
On the basis, the thickness of the high-strength solid plate type structure of the part of the base and the top beam between the front and rear upright posts is more than or equal to 80 mm.
Basically, the bottom lifting mechanism is a horizontal bottom lifting mechanism.
Basically, the tail end of back timber sets up the screen roof beam, the screen roof beam passes through the connecting rod and is connected with the base.
Compared with the prior art, the utility model has substantive characteristics and progress, and particularly, the utility model abandons the traditional two-column shield support structure, adopts a four-column support shield structure, greatly increases the base and the top beam, and reduces the specific pressure of the bottom plate by increasing the area of the base, so that the working surface can deal with soft bottom and the base bottom pricking condition is prevented; meanwhile, the pedestrian passageway is designed between the front upright post and the rear upright post, so that the extensible length of the base is longer, and the safe passing of people is more guaranteed.
Furthermore, the front end of the base is provided with a bottom lifting mechanism and a pushing jack, so that the occupied space is reduced, the function of lifting the bottom during the frame pulling is realized, and the bottom pricking of the base is further prevented.
Furthermore, the top beam and the base adopt a profile structure with concave middle parts, so that the space for people to pass and the ventilation space are greatly increased.
Furthermore, the parts of the base and the top beam between the front and rear upright posts are of a high-strength solid plate structure, the thickness of the concave part is greatly reduced, the thinnest part is only 80mm, the pedestrian height and the ventilation section in the low coal seam mining environment are effectively guaranteed, and the mining of a coal seam with the thickness of 0.6-1.3m is realized.
Drawings
Fig. 1 is a structural schematic diagram of a large-section low-coal-seam hydraulic support suitable for a soft bottom working surface in the utility model.
Fig. 2 is a schematic structural view of the horizontal bottom lifting mechanism and the pushing jack of the utility model.
In the figure: 1. a top beam; 2. a base; 3. a front pillar; 4. a rear pillar; 5. a horizontal bottom lifting mechanism; 6. pushing a jack; 7. a conveyor; 8. pushing the connecting lug; 9. a push rod; 10. a pushing connector; 11. covering the beam; 12. a connecting rod.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
As shown in fig. 1 and 2, the large-section low-seam hydraulic support suitable for the soft-bottom working surface comprises a top beam 1, a base 2, two front vertical columns 3, two rear vertical columns 4, a pushing jack 6, a horizontal bottom lifting mechanism 5, a connecting piece, a shield beam 11 and a connecting rod 12.
The bottom of the front upright post 3 is fixed at the front end of the base 2, the top of the front upright post 3 is fixed at the front end of the top beam 1, the bottom of the rear upright post 4 is fixed at the rear end of the base 2, the top of the rear upright post 4 is fixed at the rear end of the top beam 1, the part of the base 2 and the top beam 1 between the front upright post and the rear upright post is of a high-strength solid plate type structure, the thickness of the high-strength solid plate type structure is larger than or equal to 80mm, the top beam and the base are both of a profile structure with concave in the middle, a pedestrian passage is formed between the front upright post 3 and the rear upright post 4, the region forming the pedestrian passage is a concave region, the space and the ventilation section of a pedestrian are raised in the concave region, and the mining of a coal bed with the thickness of 0.6-1.3m can be realized.
Front and back both ends of base 2 surpass front column 3 and rear column 4 and set up, both ends surpass front column 3 and rear column 4 and set up around back timber 1.
The tail end of the top beam 1 is provided with a shield beam 11, and the shield beam 11 is connected with the base 2 through a connecting rod 12.
The support is supported in a roadway, and the extrusion of a pedestrian passageway to the space in the front of the big foot of the base can be reduced by means of four-column support, the base can extend to the edge of the roadway, and the pedestrian passageway is designed in the area between the front upright column and the rear upright column, so that the area of the base is increased, the specific pressure of a bottom plate is reduced, and the traffic safety can be ensured; the specific pressure is reduced, and the horizontal bottom lifting mechanism is arranged at the front end of the base, so that the bottom pricking condition of the base can be effectively avoided. The base and the top beam are arranged between the front and rear upright posts and are of a high-strength solid plate structure, so that the height of a space for passing people and the ventilation area are increased to the maximum extent.
The support has the advantages of low mining height, good safety, large ventilation section, good bottom plate stability and the like, and effectively realizes safe and efficient mining of the soft-bottom high-gas thin coal seam working face.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.
Claims (6)
1. The utility model provides a big section low seam hydraulic support suitable for soft end working face which characterized in that: comprises a top beam, a base, two front upright columns, two rear upright columns, a pushing mechanism, a bottom lifting mechanism and a connecting piece;
the bottom of the front upright post is fixed at the front end of the base, the top of the front upright post is fixed at the front end of the top beam, the bottom of the rear upright post is fixed at the rear end of the base, the top of the rear upright post is fixed at the rear end of the top beam, and a pedestrian passage is formed between the front upright post and the rear upright post;
the front end and the rear end of the base are arranged beyond the front upright post and the rear upright post, and the front end and the rear end of the top beam are arranged beyond the front upright post and the rear upright post;
the part of the base and the top beam between the front and rear upright posts is of a high-strength solid plate structure;
the bottom lifting mechanism is arranged at the front end of the base, the connecting piece comprises a pushing connecting lug, a push rod and a pushing connecting head, the pushing connecting lug is arranged at the front end of the base, one end of the pushing mechanism is connected with the pushing connecting lug, the other end of the pushing mechanism is connected with the tail of the push rod, and the head of the push rod is connected with the pushing connecting head.
2. The hydraulic support for the low-profile coal seam with the soft bottom working surface, which is suitable for the soft bottom working surface, is characterized in that: the pushing mechanism is a pushing jack, the cylinder bottom of the pushing jack is hinged to the pushing connecting lug, and the piston rod end of the pushing jack is hinged to the tail end of the push rod.
3. The hydraulic support for the large-section low-coal seam suitable for the soft bottom working surface as claimed in claim 1 or 2, wherein: the top beam and the base both adopt a profile structure with the concave middle part.
4. The hydraulic support for the low-profile coal seam with the soft bottom working surface as claimed in claim 3, wherein: the thickness of the high-strength solid plate structure of the part of the base and the top beam between the front and rear upright posts is more than or equal to 80 mm.
5. The hydraulic support for the low-profile coal seam with the soft bottom working surface as claimed in claim 4, wherein: the bottom lifting mechanism is a horizontal bottom lifting mechanism.
6. The hydraulic support for the low-profile coal seam with the soft bottom working surface as claimed in claim 5, wherein: the tail end of the top beam is provided with a shield beam, and the shield beam is connected with the base through a connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717218.0U CN216305979U (en) | 2021-07-27 | 2021-07-27 | Large-section thin coal seam hydraulic support suitable for soft bottom working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717218.0U CN216305979U (en) | 2021-07-27 | 2021-07-27 | Large-section thin coal seam hydraulic support suitable for soft bottom working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216305979U true CN216305979U (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121717218.0U Active CN216305979U (en) | 2021-07-27 | 2021-07-27 | Large-section thin coal seam hydraulic support suitable for soft bottom working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216305979U (en) |
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2021
- 2021-07-27 CN CN202121717218.0U patent/CN216305979U/en active Active
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