Safety protection tail cover of underground coal mine belt conveyor

Abstract

The utility model discloses a safety protection tail cover of an underground coal mine belt conveyor, which relates to the technical field of coal mining and comprises a tail frame. Protection guide rollers distributed in a parabola shape are mounted on the inner walls of two sides of the tail cover; the coal mine located at the edge position collides with the protection guide roller and generates friction, kinetic energy generated by collision can drive the protection guide roller to rotate, the protection guide roller rotates to guide coal briquettes, and therefore the movement track of the coal mine is rectified, the coal briquettes move in the direction away from the machine tail cover, and the coal briquettes are conveyed to the machine tail cover. The tail cover of the rubber belt conveyor is provided with the atomization dust falling mechanism, the atomization dust falling mechanism can carry out dust falling on raised coal dust when the coal briquettes are thrown out from the tail end of the rubber belt conveyor, and therefore coal dust overflowing is reduced, and the tail cover of the rubber belt conveyor is prevented from being damaged due to collision of the coal briquettes. And the adverse effect on the surrounding air environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a safety protection tail cover for an underground belt conveyor in a coal mine. Background Art

[0002] With the continuous improvement of my country's modernization construction level in recent years, the total economic demand for energy has increased significantly, resulting in certain changes in my country's energy structure. However, the overall demand for coal has not decreased significantly. With the increase in coal demand, higher technical standards have been put forward for coal mine production safety. With the widespread application of mechanized equipment in the tunneling working face, the belt conveyor bears the main transportation task of coal and rock. During the construction of the tunneling machine on the comprehensive excavation working face, the tunneling machine transfers the mined coal blocks to the belt conveyor, and then the belt conveyor transports the coal blocks out along the tunnel.

[0003] The belt conveyor mainly includes a frame, a driving mechanism, a roller body, a belt and a protective cover. The protective cover installed on the tail roller of the machine is called the tail roller cover. The tail roller cover mainly plays a role in protecting the tail roller and personnel. However, in actual use, we found that the existing tail roller cover is often hit by coal blocks thrown from the tail of the machine. The impact will cause the tail roller cover to deform. In severe cases, it will cause the tail roller cover to be damaged, which will lead to a very short service life of the tail roller cover, which needs to be replaced frequently and has a large loss. In addition, the dust-proof effect of the existing tail roller cover is poor. A large amount of coal dust will inevitably be raised during the throwing of coal blocks. The coal dust is easily discharged from the inlet and outlet of the tail roller cover into the surrounding air. Due to the small space underground in the coal mine, the coal dust is scattered in the underground tunnel of the coal mine and it is difficult to disperse quickly in a short time. The coal dust will inevitably be inhaled by the workers in the coal mine, which is also a major cause of pneumoconiosis among coal miners. For this reason, we urgently need to design a new type of safety protective tail cover for underground belt conveyors in coal mines to solve the above-mentioned technical problems. Utility Model Content

[0004] The utility model aims to provide a safety protection tail cover for a belt conveyor in an underground coal mine to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A safety protection tail cover of an underground belt conveyor in a coal mine comprises a tail frame, a tail roller is installed on the tail frame, a belt is installed on the tail roller, a discharge port is opened in the middle of the tail frame at the rear of the tail roller, a tail cover is installed on the tail frame, an atomizing dust reduction mechanism is installed on the tail cover, a dust barrier belt is installed at the front port of the tail cover, a plurality of protection guide rollers are installed on the inner walls of both sides of the tail cover, the protection guide rollers are parabolically distributed on the inner walls of both sides of the tail cover, the size of the protection guide rollers gradually increases from top to bottom, a fixing frame is installed on both sides of the tail roller at the bottom of the tail frame, a tape cleaning assembly is installed between the two fixing frames, a plurality of positioning assemblies are installed on the cover edge of the tail cover, and the tail cover is fixedly connected to the tail frame through the positioning assembly.

[0007] As a further solution of the utility model: the positioning assembly includes a threaded rod and a handle, the threaded rod is threadedly connected to the positioning holes provided on the tail cover and the tail frame, and the handle is installed on the top of the threaded rod.

[0008] As a further solution of the utility model: the atomization dust reduction mechanism includes a water pipe, a spray rack, an atomizing nozzle and a water pump. The water pipe is arranged on the outer wall of the tail cover, one end of the water pipe is connected to the spray rack installed on the top of the tail cover, and a plurality of atomizing nozzles are evenly installed on the bottom of the spray rack. The other end of the water pipe is connected to the water pump installed on the outer wall of the tail cover.

[0009] As a further solution of the utility model: the dust-blocking strips are suspended side by side at the front end of the tail cover, and two adjacent dust-blocking strips are tightly overlapped together.

[0010] As a further solution of the utility model: the tape cleaning assembly includes a cleaning plate, screws and a brush. The brush is installed on the side of the cleaning plate facing the tape, and both ends of the cleaning plate are fixedly connected to the fixing frame by screws.

[0011] As a further solution of the utility model: the bottom surface of the fixing frame is inclined toward the rear side.

[0012] As a further solution of the utility model: tempered glass is installed on the upper part of the tail cover, and the tempered glass is transparent glass.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model installs parabolic protective guide rollers on the inner walls on both sides of the tail cover. When the coal blocks are thrown downward from the tail of the machine, the coal located at the edge will collide with the protective guide rollers and generate friction. The kinetic energy generated by the collision will drive the protective guide rollers to rotate. The rotation of the protective guide rollers can guide the coal blocks, thereby correcting the movement trajectory of the coal blocks, so that the coal blocks move in the direction away from the tail cover, thereby reducing the probability of the tail cover being deformed and damaged by the impact of the coal blocks, better protecting the tail cover, and extending the service life of the tail cover.

[0015] 2. The utility model is provided with an atomizing dust reduction mechanism, which can reduce the coal dust raised when the coal blocks are thrown out from the tail end of the belt conveyor, thereby reducing the spillage of coal dust and reducing the adverse effects on the surrounding air environment.

[0016] 3. The utility model is provided with a belt cleaning component, which can clean the broken coal slag adhered to the belt, so that the broken coal slag is separated from the belt and discharged together with the coal blocks, thereby reducing the dead weight of the belt conveyor and saving electric energy. At the same time, it can effectively reduce the scattering of broken coal slag at the bottom of the belt conveyor, which brings inconvenience to personnel cleaning.

[0017] 4. The utility model installs dust-blocking belts arranged side by side at the front port of the tail cover. The dust-blocking belts are installed on the tail cover in a suspended manner to block the coal dust that attempts to be discharged from the front port of the tail cover. The dust-blocking belts can further reduce the risk of coal dust overflowing from the tail cover and better protect the air environment in the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side sectional view of a safety protection tail cover of a belt conveyor in an underground coal mine.

[0019] Figure 2 This is the overall appearance of a safety protection tail cover of a belt conveyor in an underground coal mine.

[0020] Figure 3 It is a safety protection tail cover for belt conveyor in coal mine Figure 1 A magnified view of the structure at center.

[0021] Figure 4 It is a safety protection tail cover for belt conveyor in coal mine Figure 2 A magnified view of the structure at point B.

[0022] 1. Tail frame; 2. Tail roller; 3. Adhesive tape; 4. Tail cover; 5. Discharge port; 6. Protective guide roller; 7. Dust-blocking belt; 8. Atomizing dust suppression mechanism; 801. Water pipe; 802. Spray rack; 803. Atomizing nozzle; 804. Water pump; 9. Positioning assembly; 901. Threaded rod; 902. Handle; 10. Positioning hole; 11. Fixing frame; 12. Tempered glass; 13. Adhesive tape cleaning assembly; 1301. Cleaning plate; 1302. Screw; 1303. Brush. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1 A safety protection tail cover of an underground belt conveyor in a coal mine comprises a tail frame 1, a tail roller 2 is installed on the tail frame 1, a belt 3 is installed on the tail roller 2, a discharge port 5 is opened in the middle of the tail frame 1 and located behind the tail roller 2, a tail cover 4 is installed on the tail frame 1, and a plurality of protection guide rollers 6 are installed on the inner walls on both sides of the tail cover 4. The protection guide rollers 6 are parabolically distributed on the inner walls on both sides of the tail cover 4, and the size of the protection guide rollers 6 gradually increases from top to bottom. Such a design can protect the side walls of the tail cover 4 from being hit by coal blocks in a larger range.

[0026] See also Figure 2 A tempered glass 12 is installed on the upper part of the tail cover 4. The tempered glass 12 is transparent glass. The tempered glass 12 can be arranged to facilitate personnel to check the coal block conveying situation from the outside of the tail cover 4.

[0027] See also Figure 2 and Figure 4 A plurality of positioning components 9 are installed on the cover edge of the tail cover 4. The tail cover 4 is fixedly connected to the tail frame 1 through the positioning components 9. The positioning components 9 include a threaded rod 901 and a handle 902. The threaded rod 901 is threadedly connected to the positioning holes 10 provided on the tail cover 4 and the tail frame 1. The handle 902 is installed on the top of the threaded rod 901. The arrangement of the positioning components 9 can facilitate personnel to disassemble and replace the tail cover 4.

[0028] In this embodiment, the protective guide roller 6 can rotate to guide the coal blocks, thereby correcting the movement trajectory of the coal mine, so that the coal blocks move in the direction away from the tail cover 4, thereby reducing the probability of the tail cover 4 being deformed and damaged by the impact of the coal blocks, better protecting the tail cover 4, and extending the service life of the tail cover 4.

[0029] Example 2

[0030] See also Figure 1-2 On the basis of the above-mentioned embodiment 1, an atomizing dust reduction mechanism 8 is installed on the tail cover 4, and the atomizing dust reduction mechanism 8 includes a water pipe 801, a spray rack 802, an atomizing nozzle 803 and a water pump 804. The water pipe 801 is arranged on the outer wall of the tail cover 4, and one end of the water pipe 801 is connected to the spray rack 802 installed on the top of the tail cover 4. A plurality of atomizing nozzles 803 are evenly installed on the bottom of the spray rack 802. The other end of the water pipe 801 is connected to the water pump 804 installed on the outer wall of the tail cover 4. A dust barrier belt 7 is installed at the front port of the tail cover 4. The dust barrier belts 7 are suspended side by side at the front port position of the tail cover 4, and two adjacent dust barrier belts 7 are tightly overlapped together.

[0031] The atomizing dust reduction mechanism 8 of this embodiment can reduce the coal dust raised when the coal blocks are thrown out from the tail end of the belt conveyor, thereby reducing the overflow of coal dust and reducing the adverse effects on the surrounding air environment.

[0032] Example 3

[0033] See also Figure 1 and Figure 3 On the basis of the combination of the above-mentioned embodiment 1 and embodiment 2, a fixing frame 11 is installed on both sides of the tail roller 2 at the bottom of the tail frame 1, and a tape cleaning assembly 13 is installed between the two fixing frames 11. The tape cleaning assembly 13 includes a cleaning plate 1301, a screw 1302 and a brush 1303. The brush 1303 is installed on the side of the cleaning plate 1301 facing the tape 3. The two ends of the cleaning plate 1301 are fixedly connected to the fixing frame 11 by screws 1302. The setting of the screws 1302 can make the tape cleaning assembly 13 detachable, which is convenient for replacing the brush 1303 after it is damaged or reaches its service life. The bottom surface of the fixing frame 11 is tilted toward the rear side, and the tilted design can facilitate the coal slag falling on the fixing frame 11 to be guided backward.

[0034] The belt cleaning assembly 13 of this embodiment can clean the broken coal slag adhered to the belt 3, so that the broken coal slag is separated from the belt 3 and discharged together with the coal blocks, thereby reducing the dead weight of the belt conveyor and saving electric energy. At the same time, it can effectively reduce the broken coal slag scattering at the bottom of the belt conveyor, which brings inconvenience to the cleaning personnel.

[0035] The working principle of the utility model is:

[0036] During use, the coal blocks enter the tail cover 4 under the conveyance of the belt conveyor. The protective guide rollers 6 on the inner walls on both sides of the tail cover 4 are hit by the coal blocks thrown from the tail and produce friction with the coal blocks. The friction drives the protective guide rollers 6 to rotate quickly to guide the coal blocks (correct the direction), so that the coal blocks move away from the tail cover 4, thereby protecting the tail cover 4 from or being hit by the coal mine, thereby extending the service life of the tail cover 4. In the process of throwing the coal blocks downward, a large amount of coal dust is bound to be raised. At this time, under the suction of the water pump 804, the external water body enters the spray rack 802 through the water pipe 801, and then is sprayed from the atomizing nozzle 803 installed on the spray rack 802 for dust reduction. The coal material adhered to the surface of the belt 3 of the belt conveyor will be brushed off by the brush 1303 installed under the tail roller 2 when it moves to the bottom of the tail roller 2 with the belt 3, and then is discharged together with the coal blocks.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety protection tail cover for an underground belt conveyor in a coal mine, comprising a tail frame (1), a tail roller (2) being mounted on the tail frame (1), a belt (3) being mounted on the tail roller (2), a discharge port (5) being provided in the middle of the tail frame (1) and located behind the tail roller (2), characterized in that: The tail frame (1) is provided with a tail cover (4), the tail cover (4) is provided with an atomizing dust reduction mechanism (8), the front port of the tail cover (4) is provided with a dust shielding belt (7), the inner walls on both sides of the tail cover (4) are provided with a plurality of protective guide rollers (6), the protective guide rollers (6) are parabolically distributed on the inner walls on both sides of the tail cover (4), the size of the protective guide rollers (6) gradually increases from top to bottom, a fixing frame (11) is provided on both sides of the tail roller (2) at the bottom of the tail frame (1), a tape cleaning assembly (13) is provided between the two fixing frames (11), a plurality of positioning assemblies (9) are provided on the cover edge of the tail cover (4), and the tail cover (4) is fixedly connected to the tail frame (1) via the positioning assemblies (9).

2. The safety protection tail cover of the belt conveyor for underground coal mine according to claim 1 is characterized by: The positioning assembly (9) comprises a threaded rod (901) and a handle (902); the threaded rod (901) is threadedly connected to a positioning hole (10) provided on the tail cover (4) and the tail frame (1); and the handle (902) is mounted on the top of the threaded rod (901).

3. The safety protection tail cover of the belt conveyor in coal mine according to claim 1 is characterized by: The atomizing dust reduction mechanism (8) comprises a water pipe (801), a spray rack (802), an atomizing nozzle (803) and a water pump (804); the water pipe (801) is arranged on the outer wall of the tail cover (4); one end of the water pipe (801) is connected to the spray rack (802) installed on the top of the tail cover (4); a plurality of atomizing nozzles (803) are evenly installed on the bottom of the spray rack (802); and the other end of the water pipe (801) is connected to the water pump (804) installed on the outer wall of the tail cover (4).

4. The safety protection tail cover of the belt conveyor for underground coal mine according to claim 1 is characterized by: The dust-blocking strips (7) are suspended side by side at the front end of the tail cover (4), and two adjacent dust-blocking strips (7) are tightly overlapped together.

5. The safety protection tail cover of the belt conveyor in underground coal mine according to claim 1 is characterized by: The adhesive tape cleaning assembly (13) comprises a cleaning plate (1301), screws (1302) and a brush (1303); the brush (1303) is mounted on the side of the cleaning plate (1301) facing the adhesive tape (3); and both ends of the cleaning plate (1301) are fixedly connected to a fixing frame (11) via screws (1302).

6. The safety protection tail cover of the belt conveyor in coal mine according to claim 1 is characterized by: The bottom surface of the fixing frame (11) is arranged to be inclined toward the rear side.

7. The safety protection tail cover of the belt conveyor in coal mine according to claim 1 is characterized by: The upper part of the tail cover (4) is provided with tempered glass (12), and the tempered glass (12) is transparent glass.

Images