Gangue clamping prevention device for upper opening iron grate of underground coal bunker

Abstract

The utility model relates to an underground coal bunker upper opening iron grate waste rock clamping prevention device which comprises a longitudinal beam and a pair of cross beams connected with the longitudinal beam, the pair of cross beams are symmetrically arranged on the left side and the right side of the center of the longitudinal beam, a circular truncated cone is arranged on the longitudinal beam close to the center where the cross beams are connected, and a pair of long supporting legs are symmetrically arranged at the bottoms of the left end and the right end of the longitudinal beam. I-shaped steel main legs are arranged in the centers of the bottoms of the longitudinal beams, short supporting legs are symmetrically arranged at the bottoms of the two ends of the pair of cross beams, fixing bases are arranged at the bottom ends of the long supporting legs, the short supporting legs and the I-shaped steel main legs, and the fixing bases are detachably connected to the iron grate net face. The device is convenient to mount and dismount, prevents the phenomenon that large coal gangue blocks at the grate opening, improves the production efficiency, effectively avoids the dangerous operation condition, improves the operation safety of personnel, and is reliable in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of coke pushing rods, in particular to a gangue-preventing device for an upper iron grate of an underground coal bunker. Background Art

[0002] The iron grate at the entrance of the underground coal bunker in a mine is generally formed by multiple 30kg / m steel rails crisscrossing vertically and horizontally, forming a mesh structure with an interval of about 500mm. Its main purpose is to filter out large pieces of coal gangue, prevent large pieces of coal gangue from causing excessive impact on the bunker body when entering the bunker, and also prevent large pieces of coal gangue from supporting each other after entering the bunker, thereby causing adverse factors such as bunker blockage. The existing technology is that when the coal flow is large and there are many large pieces of coal gangue, large pieces of coal gangue are easy to support each other above the rail grate, thereby blocking the leakage space of the rail grate, causing coal gangue to accumulate at the top of the coal bunker in a short time. When this happens, the operator needs to use a long-handled tool to pry the large pieces of coal gangue. The prying process is time-consuming, labor-intensive and has certain risks. Not only does it affect the normal production progress, but there is also a potential risk of personal injury accidents.

[0003] Therefore, there is an urgent need for an anti-stuck gangue device for the iron grate at the top of an underground coal bunker, which is convenient for installation and disassembly, prevents large pieces of coal gangue from being stuck in the grate mouth, improves production efficiency, effectively avoids dangerous operating conditions, and improves the safety of personnel operations. Summary of the invention

[0004] The invention discloses a gangue-prevention device for the upper iron grate of an underground coal bunker, which is convenient for installation and disassembly, prevents large pieces of coal gangue from being stuck in the grate opening, improves production efficiency, effectively avoids dangerous operation situations, and improves the safety of personnel operation.

[0005] A device for preventing gangue from being stuck on an iron grate at the top of an underground coal bunker comprises a longitudinal beam and a pair of transverse beams connected thereto, wherein:

[0006] A pair of cross beams are symmetrically arranged on the left and right sides of the center of the longitudinal beam, a truncated cone is arranged at the center of the upper side of the longitudinal beam, a pair of long supporting legs are symmetrically arranged at the bottom of both ends of the longitudinal beam, an I-beam main leg is arranged at the center of the bottom of the longitudinal beam, and a pair of short supporting legs are symmetrically arranged at the bottom of both ends of the cross beam, and the bottom ends of the long supporting legs, the short supporting legs and the I-beam main legs are all provided with fixed bases, and the fixed bases can be detachably connected to the iron grate mesh surface.

[0007] Preferably, the cross sections of the longitudinal beam and the cross beam are both in the shape of an I, and a plurality of drill holes are provided on the longitudinal beam, the cross beam, the long supporting legs and the short supporting legs.

[0008] Preferably, the top end of the I-beam main leg is detachably equipped with a "π"-shaped connecting piece, and the "π"-shaped connecting piece includes a first U-shaped vertical groove, and the first U-shaped vertical groove has first U-shaped clamping grooves on both sides of the upper part, and two fixing holes are provided in the middle of the first U-shaped vertical groove, and the positions of the fixing holes correspond to the drilling positions of the long supporting legs, and the first U-shaped clamping groove is clamped to the lower part of the crossbeam.

[0009] Preferably, the connection between the longitudinal beam and the transverse beam is detachably equipped with an "L"-shaped connecting piece, and four fixing holes are respectively provided on both sides of the "L"-shaped connecting piece, and the positions of the fixing holes correspond to the drilling positions on the longitudinal beam and the transverse beam.

[0010] Preferably, a "T"-shaped connecting piece is provided at the connection between the cross beam and the short supporting leg, and at the connection between the longitudinal beam and the long supporting leg. The "T"-shaped connecting piece includes a second U-shaped vertical groove, the upper end of the second U-shaped vertical groove is connected to the second U-shaped clamping groove, the upper side of the second U-shaped clamping groove is connected to the cross plate, and the second U-shaped vertical groove and the cross plate are respectively provided with fixing holes, the second U-shaped clamping groove is clamped to the lower part of the longitudinal beam or the cross beam, the second U-shaped vertical groove is connected to the long supporting leg or the short supporting leg through the fixing hole, and the cross plate is connected to the longitudinal beam or the cross beam through the fixing hole.

[0011] Preferably, a fixing seat groove is provided at the bottom of the fixing base, and the fixing seat groove is mounted on the steel bar of the iron grate mesh surface. A plurality of locking holes are provided on the fixing base, and the locking holes are fixed to the mesh surface by fixing bolts and nuts.

[0012] Preferably, the “π”-shaped connecting piece, the “L”-shaped connecting piece, and the “T”-shaped connecting piece are all made of thick steel plates.

[0013] Beneficial effects of the utility model: The utility model is a device for preventing gangue from getting stuck on the iron grate at the top of an underground coal bunker. By adding the device to the original iron grate at the wellhead, the cross-shaped combination plus the frustum on the top makes the force area that the original large pieces of gangue are in contact with smaller, making the contact point pressure greater, breaking up large pieces of gangue more quickly, and effectively preventing the phenomenon of large pieces of gangue getting stuck at the grate mouth. The device is designed with detachable longitudinal beams, cross beams, and each supporting leg, which is convenient for installation and disassembly. It is suitable for a variety of production scenarios and does not require large-scale modification. The device has a simple and reliable structure, which improves production efficiency while effectively avoiding dangerous operating conditions and enhancing its practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a device for preventing gangue from being stuck on the upper opening iron grate of an underground coal bunker according to the utility model;

[0015] Figure 2 This is a schematic diagram of a "T"-shaped connecting piece of a device for preventing gangue from being stuck on the upper opening of an underground coal bunker according to the utility model;

[0016] Figure 3This is a schematic diagram of a fixed base of an anti-stuck gangue device for an upper iron grate of an underground coal bunker according to the utility model;

[0017] Figure 4 This is a schematic diagram of an "L"-shaped connecting piece of an anti-stuck gangue device for an upper iron grate of an underground coal bunker according to the utility model;

[0018] Figure 5 This is a schematic diagram of a "π"-shaped connecting piece of a device for preventing gangue from being stuck on the upper opening of an underground coal bunker according to the utility model;

[0019] Figure 6 The utility model is a gangue-prevention device for the upper iron grate of an underground coal bunker and a schematic diagram of the iron grate.

[0020] In the figure:

[0021] Longitudinal beam 1, cross beam 2, truncated cone body 3, long supporting leg 4, short supporting leg 5, I-beam main leg 6, fixed base 7, fixed seat groove 701, locking hole 702, iron grate mesh 8, "π"-shaped connecting piece 9, first U-shaped vertical groove 91, first U-shaped card groove 92, "L"-shaped connecting piece 10, "T"-shaped connecting piece 11, second U-shaped vertical groove, second U-shaped card groove 112, second U-shaped card groove 112, cross plate 113. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0023] Embodiment 1:

[0024] like Figure 1-6 As shown, the utility model is a device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker, comprising a longitudinal beam 1 and a pair of cross beams 2 connected thereto, wherein:

[0025] A pair of cross beams 2 are symmetrically provided on the left and right sides of the center of the longitudinal beam 1, a truncated cone 3 is provided at the center of the upper side of the longitudinal beam 1, a pair of long supporting legs 4 are symmetrically provided at the bottom of both ends of the longitudinal beam 1, an I-beam main leg 6 is provided at the center of the bottom of the longitudinal beam 1, and a pair of short supporting legs 5 are symmetrically provided at the bottom of both ends of the cross beam 2, and the bottom ends of the long supporting legs 4, the short supporting legs 5 and the I-beam main legs 6 are all provided with fixed bases 7, and the fixed base 7 can be detachably connected to the iron grate mesh surface 8.

[0026] The cross sections of the longitudinal beam 1 and the cross beam 2 are both in an I-shape, and a plurality of holes are provided on the longitudinal beam 1, the cross beam 2, the long supporting leg 4 and the short supporting leg 5.

[0027] The top of the I-beam main leg 6 is detachably equipped with a "π"-shaped connecting piece 9, which includes a first U-shaped vertical groove 91. The first U-shaped vertical groove 91 has first U-shaped clamping grooves 92 on both sides of the upper part. The middle of the first U-shaped vertical groove 91 is provided with two fixing holes, and the positions of the fixing holes correspond to the drilling positions of the long supporting leg 4. The first U-shaped clamping groove 92 is clamped at the lower part of the crossbeam 2.

[0028] The connection between the longitudinal beam 1 and the cross beam 2 can be detachably equipped with an "L"-shaped connecting piece 10, and four fixing holes are respectively provided on both sides of the "L"-shaped connecting piece 10, and the positions of the fixing holes correspond to the drilling positions on the longitudinal beam 1 and the cross beam 2.

[0029] The connection between the cross beam 2 and the short support leg 5 and the connection between the longitudinal beam 1 and the long support leg 4 are both provided with a "T"-shaped connecting piece 11, and the "T"-shaped connecting piece 11 includes a second U-shaped vertical groove 111 ， The upper end of the second U-shaped vertical groove 111 is connected to the second U-shaped card slot 112, and the upper side of the second U-shaped card slot 112 is connected to the cross plate 113. The second U-shaped vertical groove 111 and the cross plate 113 are respectively provided with fixing holes. The second U-shaped card slot 112 is clamped to the lower part of the longitudinal beam 1 or the cross beam 2. The second U-shaped vertical groove 111 is connected to the long supporting leg 4 or the short supporting leg 5 through the fixing hole, and the cross plate 113 is connected to the longitudinal beam 1 or the cross beam 2 through the fixing hole.

[0030] The bottom of the fixed base 7 is provided with a fixed base groove 701, and the fixed base groove 701 is mounted on the steel bar of the iron grate mesh surface 8. The fixed base 7 is provided with a plurality of locking holes 702, and the locking holes 702 are fixed to the mesh surface 8 by fixing bolts and nuts.

[0031] The “π”-shaped connecting piece 9, the “L”-shaped connecting piece 10, and the “T”-shaped connecting piece 11 are all made of thick steel plates.

[0032] When the device is in use, during assembly, align the drilled holes on the longitudinal beam 1 and the cross beam 2 with the drilled holes on the "L"-shaped connecting piece 10, and tighten them with screws and nuts. After the longitudinal beam 1 and the cross beam 2 are fixed, the two long support legs 4 are used to support the cross beam 2, and the two short support legs 5 are used to support the longitudinal beam 1. The middle of the longitudinal beam 1 is connected to the main leg 6 of the I-beam with a "π"-shaped connecting piece 9 to further strengthen the device, and tighten it with screws and nuts; the remaining four support legs are fastened with screws and nuts through the "T"-shaped connecting piece 11; after the device is assembled through the above connection method, the iron grate mesh surface 8 is clamped through the fixing seat groove 701 on the fixing base 7, and then the screw nut is passed through the locking hole 702 to fasten the device to the iron grate mesh surface 8. When the coal blocks enter the coal bin via the belt conveyor, the frustum 1 can crush the large pieces of coal gangue, while the cross beam 2 and the longitudinal beam 1 can disperse and divert the coal blocks, thereby preventing the large pieces of coal gangue from being stuck on the iron grate, effectively avoiding dangerous working conditions while improving production efficiency.

[0033] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A device for preventing gangue from being stuck on the upper iron grate of an underground coal bunker, characterized in that: It comprises a longitudinal beam (1) and a pair of transverse beams (2) connected thereto, wherein: A pair of cross beams (2) are symmetrically arranged on the left and right sides of the center of the longitudinal beam (1); a truncated cone (3) is arranged at the center of the upper side of the longitudinal beam (1); a pair of long supporting legs (4) are symmetrically arranged at the bottom of both ends of the longitudinal beam (1); an I-beam main leg (6) is arranged at the center of the bottom of the longitudinal beam (1); a pair of short supporting legs (5) are symmetrically arranged at the bottom of both ends of the cross beam (2); the bottom ends of the long supporting legs (4), the short supporting legs (5) and the I-beam main leg (6) are all provided with fixed bases (7); and the fixed bases (7) are detachably connected to the iron grate mesh surface (8).

2. The device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker as claimed in claim 1, characterized in that: The longitudinal beam (1) and the cross beam (2) both have an I-shaped cross section, and a plurality of drill holes are provided on the longitudinal beam (1), the cross beam (2), the long supporting leg (4) and the short supporting leg (5).

3. The device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker as claimed in claim 2, characterized in that: The top of the I-beam main leg (6) is detachably equipped with a "π"-shaped connecting piece (9), the "π"-shaped connecting piece (9) comprising a first U-shaped vertical groove (91), the first U-shaped vertical groove (91), and first U-shaped clamping grooves (92) are respectively arranged on both sides of the upper part, and two fixing holes are arranged in the middle of the first U-shaped vertical groove (91), and the positions of the fixing holes correspond to the drilling positions of the long supporting leg (4), and the first U-shaped clamping groove (92) is clamped to the lower part of the crossbeam (2).

4. The device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker as claimed in claim 2, characterized in that: The connection between the longitudinal beam (1) and the transverse beam (2) is detachably equipped with an "L"-shaped connecting piece (10), and four fixing holes are respectively provided on both sides of the "L"-shaped connecting piece (10), and the positions of the fixing holes correspond to the positions of the drill holes on the longitudinal beam (1) and the transverse beam (2).

5. The device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker as claimed in claim 2, characterized in that: The connection between the cross beam (2) and the short supporting leg (5) and the connection between the longitudinal beam (1) and the long supporting leg (4) are both provided with a "T"-shaped connecting piece (11), and the "T"-shaped connecting piece (11) includes a second U-shaped vertical groove (111) ， The upper end of the second U-shaped vertical groove (111) is connected to the second U-shaped clamping groove (112), the upper side of the second U-shaped clamping groove (112) is connected to the transverse plate (113), the second U-shaped vertical groove (111) and the transverse plate (113) are respectively provided with fixing holes, the second U-shaped clamping groove (112) is clamped to the lower part of the longitudinal beam (1) or the transverse beam (2), the second U-shaped vertical groove (111) is connected to the long supporting leg (4) or the short supporting leg (5) through the fixing hole, and the transverse plate (113) is connected to the longitudinal beam (1) or the transverse beam (2) through the fixing hole.

6. The device for preventing gangue from being stuck in the upper iron grate of an underground coal bunker as claimed in claim 1, characterized in that: The bottom of the fixed base (7) is provided with a fixed base groove (701), and the fixed base groove (701) is mounted on the steel bar of the iron grate mesh surface (8). The fixed base (7) is provided with a plurality of locking holes (702), and the locking holes (702) are fixed to the iron grate mesh surface (8) by fixing bolts and nuts.

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