Fully mechanized coal mining face tail integral top cutting supporting device

Abstract

The utility model relates to a fully mechanized coal mining face tail integral top cutting supporting device, and belongs to the technical field of coal mining equipment for coal mines. The utility model aims to provide a fully mechanized coal mining face tail integral top cutting supporting device which is good in supporting effect, high in automation degree and capable of reducing the labor intensity of workers. According to the technical scheme, an upper folding protection side is installed on a top beam protection plate on the coal wall side of a top beam, a side telescopic protection plate is installed on the coal wall side of the back of a shield beam, and a lower telescopic protection plate is installed on the coal wall side of the back of a rear connecting rod; in the upper folding protection side, the upper portion of a folding protection plate is hinged to the upper portion of a mounting plate, a cylinder body of a first oil cylinder is hinged to the lower portion of the mounting plate, and the middle of the folding protection plate is hinged to a cylinder rod of the first oil cylinder. In the side telescopic protection plate, a plurality of first telescopic sleeves are arranged side by side, and the side protection plate is fixed on the first telescopic sleeves; in the lower telescopic protection plate, a plurality of second telescopic sleeves are arranged side by side, and the lower protection plate is fixed to the second telescopic sleeves. The device is used for fully mechanized coal mining face tail top cutting support.

Description

Technical Field

[0001] The utility model relates to an integral top cutting support device at the tail of a fully mechanized mining working face, belonging to the technical field of coal mining equipment. Background Art

[0002] Currently, the tail-end support for the roof of a fully mechanized mining face with large mining heights is achieved by installing single columns. Specifically, when the roof is intact and the end and tail frames are less than 2m from the coal wall, single columns with a 1m spacing are used for support. If the end and tail frames are 2m or more from the coal wall, the section from the roof line to the coal wall of the working face must be more densely supported. Depending on the width, at least two rows of columns are installed, with a spacing of 1m. One row is single columns, and the others are evenly distributed. A pedestrian walkway with a width of at least 0.8m is also required. When cracks or breakage occur in the roof, under the aforementioned support conditions, π-shaped steel beams (or 5m wooden beams) must be installed to maintain the roof. Because the single columns are heavy, each support and withdrawal operation requires the installation of ten columns, followed by the withdrawal of the original ten columns for replacement. Both installation and withdrawal require manual lifting, which places a high workload on employees and fails to meet the requirements of intelligent working faces, thereby failing to reduce manpower and increase efficiency. Therefore, it is necessary to change the tail support to an integral support, adopt a top-cut hydraulic support, eliminate the single-column support method, and change the end-tail support process. However, the existing shield hydraulic support has a limited protective area. When the distance from the coal wall is not enough to place another hydraulic support, but there is still a gap of about 0.5-1m, the support effect is poor. The gangue from the goaf may flow into the tail advance support area, causing injuries. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a comprehensive mining face tail integral cutting top support device with good support effect, high degree of automation and reduced labor intensity of workers.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a fully mechanized mining face tail integral top cutting support device, comprising a shielding hydraulic support, an upper folding side guard, a side telescopic guard plate and a lower telescopic guard plate; the shielding hydraulic support comprises a top beam, a shielding beam and a rear connecting rod; the upper folding side guard is mounted on the top beam guard plate on the side of the top beam close to the coal wall; the side telescopic guard plate is mounted on the back of the shielding beam close to the coal wall; and the lower telescopic guard plate is mounted on the back of the rear connecting rod close to the coal wall;

[0005] The upper folding guard comprises a mounting plate, a folding guard plate and a first oil cylinder. The two mounting plates are fixed on the side surfaces of the top beam guard plate. A mounting seat is fixed on the upper portion of each mounting plate. The cylinder bodies of the two first oil cylinders are respectively hinged to the lower portion of one mounting plate. The upper portion of the folding guard plate is hinged to the mounting seat. The middle portion of the folding guard plate is hinged to the cylinder rods of the two first oil cylinders. The length of the folding guard plate is adapted to the length of the top beam guard plate.

[0006] The side telescopic guard plate includes a first telescopic sleeve and a side guard plate. A plurality of first telescopic sleeves are fixed side by side on the back of the shield beam from top to bottom. The side guard plate is fixed on the telescopic component of the first telescopic sleeve. The length of the side guard plate is adapted to the length of the shield beam.

[0007] The lower telescopic guard plate includes a second telescopic sleeve and a lower guard plate. Multiple second telescopic sleeves are fixed side by side on the back of the rear connecting rod from top to bottom. The lower guard plate is fixed on the telescopic part of the second telescopic sleeve. The length of the lower guard plate is adapted to the length of the rear connecting rod.

[0008] Furthermore, there are two mounting seats on the mounting plate, which are respectively located on both sides of the corresponding first oil cylinder.

[0009] Furthermore, the first telescopic sleeve includes a fixed sleeve, a movable sleeve and a second oil cylinder, the movable sleeve is sleeved in the fixed sleeve, the second oil cylinder is located in the fixed sleeve, one end of the second oil cylinder is connected to the fixed sleeve, and the other end is connected to the movable sleeve, the fixed sleeve is fixed to the shield beam, and the side guard plate is fixed to the movable sleeve;

[0010] The structure of the second telescopic sleeve is the same as that of the first telescopic sleeve.

[0011] Furthermore, a pin hole is formed at the end of the movable sleeve, a connecting plate with the pin hole is fixed on the side guard plate, and the end of the movable sleeve is detachably connected to the connecting plate via a pin shaft.

[0012] Furthermore, the cross-section of the side guard plate is L-shaped, and both ends of the side guard plate have inclined surfaces.

[0013] Furthermore, isolation ribs are fixed between the multiple first telescopic sleeves.

[0014] Furthermore, the side guard plate is provided with a support bar, and the support bar is located between the side guard plate and the plurality of fixing sleeves.

[0015] Compared with the prior art, the present invention has the following beneficial effects.

[0016] 1. In the utility model, the upper folding guard, the side telescopic guard plate and the lower telescopic guard plate improve the safety factor of the tail operation, avoid the withdrawal of the end cutting top single column and the accident rate of the roof falling and collapsing and injuring people during the withdrawal, and reduce the accident rate of the gangue rolling down when the roof collapses after the cutting line.

[0017] 2. After using the utility model, compared with the original workers who need to pass the tail of the machine and return 10 single columns each time, and pass the tail of the machine four times per shift, the workers can reduce the number of single columns they need to support and return by 40, with a total weight of about 3,600 kg, greatly reducing the labor intensity of the workers.

[0018] 3. The utility model can be connected with the front advance bracket or scraper conveyor, and the two cooperate to realize self-movement, which reduces the labor intensity of workers, saves manpower, and improves the automation level of the equipment.

[0019] The utility model realizes automatic mechanized operation, eliminates manual work, reduces labor intensity, improves the end tail support strength, expands the support effect, reduces the operation time of the tail of the machine, increases the number of coal cutting knives, and improves profit output value. The utility model is combined with the actual site of the fully mechanized mining working face, arranged at the side of the tail frame at the end of the machine, and its cutting top line is consistent with the basic frame. It is used in conjunction with the anchor net support and connected to the tail advance support of the machine to jointly complete the mechanized support work of the goaf and the tail advance support. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a structural diagram of the shielded hydraulic support in this utility model.

[0023] Figure 3 It is a structural diagram of the upper folding side guard of the utility model.

[0024] Figure 4 It is a side view of the upper foldable guard of the utility model in the folded state.

[0025] Figure 5 It is a side view of the utility model in the state of the upper folding guard being extended.

[0026] Figure 6 It is a three-dimensional diagram of the middle side telescopic guard plate of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the movable sleeve in the utility model.

[0028] Figure 8 It is a structural schematic diagram of the fixed sleeve in the utility model.

[0029] Figure 9 It is a structural schematic diagram of the lower telescopic guard plate in the utility model.

[0030] Figure 10 It is a three-dimensional diagram of the lower telescopic guard plate in the utility model.

[0031] In the figure: 1 is a shielding hydraulic support, 11 is a top beam, 12 is a shielding beam, 13 is a rear connecting rod, 14 is a top beam guard plate, 2 is an upper folding guard, 21 is a mounting plate, 22 is a folding guard plate, 23 is a first oil cylinder, 24 is a mounting seat, 3 is a side telescopic guard plate, 31 is a first telescopic sleeve, 311 is a fixed sleeve, 312 is a movable sleeve, 32 is a side guard plate, 33 is a connecting plate, 34 is an isolation rib, 35 is a support bar, 4 is a lower telescopic guard plate, 41 is a second telescopic sleeve, and 42 is a lower guard plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0034] The utility model provides the following embodiments.

[0035] like Figure 1 、 Figure 2 As shown, the utility model is a fully mechanized mining face tail integral top cutting support device, which is characterized by comprising a shielding hydraulic support 1, an upper folding guard 2, a side telescopic guard plate 3 and a lower telescopic guard plate 4. The shielding hydraulic support 1 comprises a top beam 11, a shielding beam 12 and a rear connecting rod 13. The upper folding guard 2 is mounted on the top beam guard plate 14 on the coal wall side of the top beam 11, the side telescopic guard plate 3 is mounted on the back of the shielding beam 12 on the coal wall side, and the lower telescopic guard plate 4 is mounted on the back of the rear connecting rod 13 on the coal wall side.

[0036] like Figure 3 、 Figure 4 、 Figure 5As shown, the upper folding guard 2 includes a mounting plate 21, a folding guard plate 22 and a first oil cylinder 23. The two mounting plates 21 are fixed to the side surfaces of the top beam guard plate 14. A mounting seat 24 is fixed to the upper portion of each mounting plate 21. The cylinder bodies of the two first oil cylinders 23 are each hinged to the lower portion of a mounting plate 21. The upper portion of the folding guard plate 22 is hinged to the mounting seat 24. The middle portion of the folding guard plate 22 is hinged to the cylinder rods of the two first oil cylinders 23. The length of the folding guard plate 22 is adapted to the length of the top beam guard plate 14.

[0037] like Figure 6 、 Figure 7 、 Figure 8 As shown, the side telescopic guard plate 3 includes a first telescopic sleeve 31 and a side guard plate 32. A plurality of first telescopic sleeves 31 are fixed side by side from top to bottom on the back of the shield beam 12. The side guard plate 32 is fixed on the telescopic part of the first telescopic sleeve 31. The length of the side guard plate 32 is adapted to the length of the shield beam 12.

[0038] like Figure 9 、 Figure 10 As shown, the lower telescopic guard plate 4 includes a second telescopic sleeve 41 and a lower guard plate 42. Multiple second telescopic sleeves 41 are fixed side by side from top to bottom on the back of the rear connecting rod 13. The lower guard plate 42 is fixed on the telescopic part of the second telescopic sleeve 41. The length of the lower guard plate 42 is adapted to the length of the rear connecting rod 13.

[0039] There are two mounting seats 24 on the mounting plate 21 , which are respectively located on both sides of the corresponding first oil cylinder 23 .

[0040] like Figure 6 、 Figure 7 、 Figure 8 As shown, the first telescopic sleeve 31 includes a fixed sleeve 311, a movable sleeve 312, and a second oil cylinder. The movable sleeve 312 is sleeved in the fixed sleeve 311. The second oil cylinder is located in the fixed sleeve 311. One end of the second oil cylinder is connected to the fixed sleeve 311, and the other end is connected to the movable sleeve 312. The fixed sleeve 311 is fixed to the shield beam 12, and the side guard plate 32 is fixed to the movable sleeve 312.

[0041] The structure of the second telescopic sleeve 41 is the same as that of the first telescopic sleeve 31 .

[0042] like Figure 6 As shown, a pin hole is formed at the end of the movable sleeve 312 , and a connecting plate 33 with a pin hole is fixed on the side guard plate 32 . The end of the movable sleeve 312 is detachably connected to the connecting plate 33 via a pin shaft.

[0043] The cross section of the side guard plate 32 is L-shaped, and both ends of the side guard plate 32 have inclined surfaces.

[0044] Isolation ribs 34 are fixed between the plurality of first telescopic sleeves 31 .

[0045] The side guard plate 32 is provided with a support bar 35 , and the support bar 35 is located between the side guard plate 31 and the plurality of fixing sleeves 311 .

[0046] The cross section of the lower guard plate 42 is L-shaped.

[0047] When the utility model is used underground, it is arranged at the side of the tail frame at the rear end of the machine, and its cutting top line is consistent with the basic frame. Then the first oil cylinder 23, the first telescopic sleeve 31, and the second telescopic sleeve 41 are controlled to extend toward the coal wall side, the folding guard plate 22 is propped up, and the side guard plates 32 and the lower guard plates 42 are extended. In this way, the support range of the shielding hydraulic support 1 is widened, and injuries caused by falling waste rock in the goaf are avoided. In addition, the utility model can be coordinated with the previous advance support or scraper conveyor to achieve self-movement, eliminating the need for workers to support and return the single column, reducing the labor intensity of the workers, and improving the intelligence level of the working face.

[0048] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fully mechanized mining face tail integral top cutting support device, characterized by: The invention comprises a shielding hydraulic support (1), an upper folding guard (2), a side telescopic guard plate (3) and a lower telescopic guard plate (4); the shielding hydraulic support (1) comprises a top beam (11), a shielding beam (12) and a rear connecting rod (13); the upper folding guard (2) is mounted on the top beam guard plate (14) on the coal wall side of the top beam (11); the side telescopic guard plate (3) is mounted on the coal wall side of the back of the shielding beam (12); and the lower telescopic guard plate (4) is mounted on the coal wall side of the back of the rear connecting rod (13); The upper folding guard (2) comprises a mounting plate (21), a folding guard plate (22) and a first oil cylinder (23). The two mounting plates (21) are fixed on the side of the top beam guard plate (14). A mounting seat (24) is fixed on the upper part of each mounting plate (21). The cylinder bodies of the two first oil cylinders (23) are respectively hinged to the lower part of one mounting plate (21). The upper part of the folding guard plate (22) is hinged to the mounting seat (24). The middle part of the folding guard plate (22) is hinged to the cylinder rods of the two first oil cylinders (23). The length of the folding guard plate (22) is adapted to the length of the top beam guard plate (14). The side telescopic guard plate (3) comprises a first telescopic sleeve (31) and a side guard plate (32). A plurality of first telescopic sleeves (31) are fixed side by side from top to bottom on the back of the shield beam (12). The side guard plate (32) is fixed on the telescopic component of the first telescopic sleeve (31). The length of the side guard plate (32) is adapted to the length of the shield beam (12). The lower telescopic guard plate (4) comprises a second telescopic sleeve (41) and a lower guard plate (42). A plurality of second telescopic sleeves (41) are fixed side by side on the back of the rear connecting rod (13) from top to bottom. The lower guard plate (42) is fixed on the telescopic component of the second telescopic sleeve (41). The length of the lower guard plate (42) is adapted to the length of the rear connecting rod (13).

2. The tail end integral top cutting support device of a fully mechanized mining face according to claim 1 is characterized in that: There are two mounting seats (24) on the mounting plate (21), which are respectively located on both sides of the corresponding first oil cylinder (23).

3. The tail end integral top cutting support device of a fully mechanized mining face according to claim 1 is characterized in that: The first telescopic sleeve (31) comprises a fixed sleeve (311), a movable sleeve (312) and a second oil cylinder. The movable sleeve (312) is sleeved in the fixed sleeve (311). The second oil cylinder is located in the fixed sleeve (311). One end of the second oil cylinder is connected to the fixed sleeve (311), and the other end is connected to the movable sleeve (312). The fixed sleeve (311) is fixed to the shield beam (12), and the side guard plate (32) is fixed to the movable sleeve (312). The structure of the second telescopic sleeve (41) is the same as that of the first telescopic sleeve (31).

4. The tail end integral top cutting support device of a fully mechanized mining face according to claim 3 is characterized in that: The end of the movable sleeve (312) is provided with a pin hole, a connecting plate (33) with a pin hole is fixed on the side guard plate (32), and the end of the movable sleeve (312) is detachably connected to the connecting plate (33) via a pin shaft.

5. The tail end integral top cutting support device of a fully mechanized mining face according to claim 1 or 3, characterized in that: The cross section of the side guard plate (32) is L-shaped, and both ends of the side guard plate (32) have inclined surfaces.

6. The tail end integral top cutting support device of a fully mechanized mining face according to claim 1 or 3, characterized in that: Isolation ribs (34) are fixed between the multiple first telescopic sleeves (31).

7. The tail end integral top cutting support device of a fully mechanized mining face according to claim 3 is characterized in that: The side guard plate (32) is provided with a support bar (35), and the support bar (35) is located between the side guard plate (32) and a plurality of fixing sleeves (311).

8. The tail end integral top cutting support device of a fully mechanized mining face according to claim 1 or 3, characterized in that: The cross section of the lower guard plate (42) is L-shaped.

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