A coal cleaning device for a scraper conveyor maintenance

Abstract

The present application relates to the technical field of coal mine fully mechanized working face conveyor, and specifically relates to a coal cleaning device for scraper conveyor maintenance, which comprises a left connecting frame, a right connecting frame, a left coal cleaning plate and a right coal cleaning plate. The left and right connecting frames are fixed as a whole through positioning pins and bolts, and are fixed with the vertical rings on both sides of the scraper through U-shaped bolts, so that the whole device moves synchronously with the scraper chain. The left and right coal cleaning plates are fixed with the corresponding connecting frames through bolts, with the lower edges falling on the middle slot shovel plate and the bottom being designed in a boat head type to smoothly pass through the slot joint and avoid jamming. The present application adopts symmetrical modular lightweight design, is convenient to disassemble and assemble, can clean the side floating coal of the shovel plate in both directions during forward and reverse operation of the scraper conveyor, is suitable for super-long working face dumbbell pin maintenance operation, effectively replaces manual coal cleaning, greatly reduces labor intensity, reduces underground high-risk operation, improves working face maintenance efficiency and starting rate, and has good popularization and application value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine underground fully mechanized working face conveyor, in particular to a coal cleaning device for scraper conveyor maintenance. BACKGROUND

[0002] In the production process of the fully mechanized working face, the daily inspection of the dumbbell pin on the side of the middle trough scraper conveyor is a key link to ensure the safe operation of the equipment, and its state is directly related to the reliability of the chute connection and the stability of the chain operation. Once the pin body falls off, it is easy to cause major mechanical and electrical accidents such as chute misalignment and chain breakage. At present, before the on-site inspection operation, the scraper conveyor needs to be withdrawn by one step to create a working space, and then the workers use shovels to clean the floating coal accumulated on the side of the scraper.

[0003] This operation mode is particularly problematic under the condition of an ultra-long working face: first, the number of troughs in the ultra-long working face is large, and the amount of floating coal accumulation is large, so the time-consuming of manual coal cleaning increases exponentially. In addition, the low efficiency of manual work leads to a large amount of occupation of the maintenance window period, which seriously affects the effective start-up rate of the working face. Second, the side of the scraper is adjacent to the coal wall, the working space is narrow, and the roof conditions are complex. The personnel work back and forth under the coal wall for a long time and a long distance, facing the significant safety risks of spalling and falling gangue, which belongs to a high-risk operation link.

[0004] In addition, the quality of manual coal cleaning is greatly affected by the skills and physical strength of the workers, and it is more difficult to ensure that the floating coal is completely removed under the environment of an ultra-long working face. The dumbbell pin and the connecting part may still be blocked by floating coal, leading to incomplete hidden danger investigation and equipment failure hidden danger. With the rapid development of fully mechanized working face towards ultra-long distance, intelligentization and fewer people, the traditional manual coal cleaning mode has been difficult to meet the needs of efficient and safe production. Therefore, it is urgent to develop a special coal cleaning device to replace the manual shovel coal cleaning operation, realize the rapid, safe and efficient cleaning of the floating coal on the side of the scraper, effectively shorten the auxiliary time of maintenance, improve the convenience and reliability of the dumbbell pin inspection, reduce the safety risk of personnel operation, and provide technical support for safe and efficient mining of the ultra-long working face. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a coal cleaning device for scraper conveyor maintenance, which aims to replace the traditional manual shovel coal cleaning operation and realize the rapid, safe and efficient cleaning of the floating coal on the side of the scraper. The present application adopts a symmetrical modular design, which is simple and reliable in structure, light in single weight and easy to disassemble and assemble. Under the driving of the scraper chain, it can quickly clean the floating coal on the side of the middle trough scraper from the beginning to the end or from the end to the beginning, which can greatly improve the coal cleaning efficiency.

[0006] The technical scheme adopted by the present application is: a coal cleaning device for maintenance of a scraper conveyor, which adopts symmetrical modular design and comprises a left connecting frame 1, a right connecting frame 2, a left coal cleaning plate 3 and a right coal cleaning plate 4. The right connecting frame 2 and the left connecting frame 1 are symmetrically designed and comprise a connecting plate 11, a bottom plate 12, a reinforcing rib 13, a pressing plate 14 and a horizontal plate 15, and the difference is that the connecting plate 11 is provided with a pin hole at the position corresponding to the positioning pin 111. The left coal cleaning plate 3 is provided with a vertical plate 31, a bottom plate B 32, an upper connecting plate 33, a lower connecting plate 34, a rib plate A 35 and a rib plate B 36. The right coal cleaning plate 4 and the left coal cleaning plate 3 are symmetrically designed and comprise a vertical plate 31, a bottom plate B 32, an upper connecting plate 33, a lower connecting plate 34, a rib plate A 35 and a rib plate B 36. The left coal cleaning plate 3 and the right coal cleaning plate 4 are respectively connected and fixed with the left connecting frame 1 and the right connecting frame 2 through bolts, and the lower edge falls on the shovel plate of the middle groove A.

[0007] Further, the left connecting frame 1 and the right connecting frame 2 are respectively connected and fixed with the vertical rings B on both sides of the scraper C through two U-shaped bolts 5, so that the coal cleaning device moves forward and backward synchronously with the scraper chain, and the floating coal on the side of the shovel plate of the middle groove A is quickly cleaned.

[0008] The coal cleaning device for maintenance of the scraper conveyor adopts symmetrical modular design, has simple and reliable structure, light weight of single piece, convenient disassembly and assembly, does not need an additional power source, can automatically complete the forward and reverse bidirectional quick cleaning of the floating coal on the side of the shovel plate along with the operation of the scraper conveyor, greatly improves the coal cleaning efficiency, reduces the labor intensity, improves the operation safety and starting rate of the fully mechanized working face, and has good popularization and application value.

[0009] The technical scheme of the present application will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The installation schematic view of the coal cleaning device for the scraper conveyor of the present application; Figure 2 The Figure 1 Left view; Figure 3 The Figure 1 A-A sectional view; Figure 4 The schematic view of the left coupling frame structure of the present application; Figure 5 The Figure 4 Bottom view; Figure 6 The schematic view of the left coal cleaning plate structure of the present application; Figure 7 The Figure 6 Left view; Figure 8 The Figure 6 Top view; In the figure: 1 left coupling frame, 11 coupling plate, 111 positioning pin, 12 bottom plate A, 121 weight-reducing hole, 13 reinforcing rib, 14 pressing plate, 15 horizontal plate, 2 right coupling frame, 3 left coal cleaning plate, 31 vertical plate, 32 bottom plate B, 33 upper coupling plate, 34 lower coupling plate, 35 rib plate A, 36 rib plate B, 4 right coal cleaning plate, 5 U-shaped bolt, A middle groove, B vertical ring, C scraper, L safety distance. DETAILED DESCRIPTION

[0011] The specific embodiment of the present application is described in detail below in combination with the accompanying drawings: As Figures 1 to 8As shown, the coal cleaning device for the scraper conveyor maintenance of the present application adopts symmetrical modular design, comprising left connecting frame 1, right connecting frame 2, left coal cleaning plate 3 and right coal cleaning plate 4; the left connecting frame 1 is provided with connecting plate 11, bottom plate A 12, reinforcing rib 13, pressing plate 14 and horizontal plate 15, the connecting plate 11 is provided with positioning pin 111, the bottom plate A 12 is provided with weight-reducing hole 121, and the connecting plate 11, bottom plate A 12, reinforcing rib 13 and horizontal plate 15 are welded into one body; the pressing plate 14 is arranged below the bottom plate 12 and directly above the vertical ring B; the right connecting frame 2 is symmetrically designed with the left connecting frame 1, comprising connecting plate 11, bottom plate 12, reinforcing rib 13, pressing plate 14 and horizontal plate 15, the difference is that the connecting plate 11 is provided with pin hole at the position corresponding to the positioning pin 111; the left connecting frame 1 and the right connecting frame 2 are fixed into one body through the positioning pin 111 and bolt connection; the left coal cleaning plate 3 is provided with vertical plate 31, bottom plate B 32, upper connecting plate 33, lower connecting plate 34, rib plate A 35 and rib plate B 36, the upper connecting plate 33 and the lower connecting plate 34 are respectively provided with upper and lower aligned connecting holes, the upper connecting plate 33 is welded into one body with the vertical plate 31 through the rib plate A 35, and the lower connecting plate 34 is welded into one body with the vertical plate 31 and the bottom plate B 32 through the rib plate B 36; the bottom plate B 32 is designed in the shape of bow stem, which can smoothly pass through the slot gap of the middle slot A, avoiding jamming; the right coal cleaning plate 4 is symmetrically designed with the left coal cleaning plate 3, comprising vertical plate 31, bottom plate B 32, upper connecting plate 33, lower connecting plate 34, rib plate A 35 and rib plate B 36; the left coal cleaning plate 3 and the right coal cleaning plate 4 are respectively fixed with the left connecting frame 1 and the right connecting frame 2 through bolts, and the lower edge falls on the shovel plate of the middle slot A, and the left coal cleaning plate 3 and the right coal cleaning plate 4 keep a safe distance L from the two ends of the middle slot A.

[0012] In the embodiment, the left connecting frame 1 and the right connecting frame 2 are respectively connected with the two vertical rings B of the scraper C through two U-shaped bolts 5, at this time, the bottom plate A 11 and the pressing plate 14 of the left connecting frame 1 and the right connecting frame 2 are respectively in contact with the scraper C and the vertical ring B, so that the coal cleaning device and the scraper chain are reliably connected, the coal cleaning device moves synchronously with the scraper chain in forward and reverse directions, and the floating coal on the side of the shovel plate of the middle slot A is pushed to the coal wall side under the action of the vertical plate 31, thereby replacing the manual work to quickly clean the floating coal.

[0013] The detailed description of the technical solutions of the present application by means of the preferred embodiments is illustrative rather than formal limitation. Based on the description of the present application, those skilled in the art can modify the technical solutions recorded in the embodiments, or replace some technical features with equivalent ones, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A coal cleaning device for overhauling a scraper conveyor, characterized in that: The coal cleaning device adopts a symmetrical modular design, including a left connecting frame (1), a right connecting frame (2), a left coal cleaning plate (3), and a right coal cleaning plate (4); the left connecting frame (1) is provided with a connecting plate (11), a bottom plate A (12), a reinforcing rib (13), a pressure plate (14), and a horizontal plate (15). The connecting plate (11) is provided with a positioning pin (111), and the bottom plate A (12) is provided with a weight reduction hole (121). The connecting plate (11), the bottom plate A (12), the reinforcing rib (13), and the horizontal plate (15) are welded together; the pressure plate (14) is arranged below the bottom plate (12) and located directly above the vertical ring (B); The right connecting frame (2) and the left connecting frame (1) are symmetrically designed, including a connecting plate (11), a base plate (12), a reinforcing rib (13), a pressure plate (14) and a horizontal plate (15). The difference is that the connecting plate (11) has a pin hole at the corresponding position of the positioning pin (111); the left connecting frame (1) and the right connecting frame (2) are connected and fixed as a whole by positioning pin (111) and bolts. The left coal cleaning plate (3) is provided with a vertical plate (31), a bottom plate B (32), an upper connecting plate (33), a lower connecting plate (34), a stiffener A (35), and a stiffener B (36). The upper connecting plate (33) and the lower connecting plate (34) are respectively provided with vertically aligned connecting holes. The upper connecting plate (33) is welded to the vertical plate (31) through the stiffener A (35), and the lower connecting plate (34) is welded to the vertical plate (31) and the bottom plate B (32) through the stiffener B (36). Its feature is that the bottom plate B (32) is designed in the shape of a ship's bow and can smoothly pass through the groove joint of the middle groove (A) to avoid jamming. The right coal cleaning plate (4) and the left coal cleaning plate (3) are symmetrically designed, including a vertical plate (31), a bottom plate B (32), an upper connecting plate (33), a lower connecting plate (34), a stiffener A (35), and a stiffener B (36). The left coal cleaning plate (3) and the right coal cleaning plate (4) are connected and fixed to the left connecting frame (1) and the right connecting frame (2) respectively by bolts. The lower edge rests on the shovel plate of the middle trough (A). The left coal cleaning plate (3) and the right coal cleaning plate (4) maintain a safe distance (L) from the two ends of the middle trough (A).

2. The coal cleaning device for maintenance of a scraper conveyor according to claim 1, characterized in that, The left connecting frame (1) and the right connecting frame (2) are respectively connected and fixed to the vertical rings (B) on both sides of the scraper (C) by two U-bolts (5), so that the coal cleaning device moves synchronously in both directions with the scraper chain to complete the rapid cleaning of floating coal on the side of the shovel plate in the middle trough (A).

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