Coal conveying device of onboard conveyor of roadheader

Abstract

According to the coal conveying device of the onboard conveyor of the roadheader, a shovel plate part comprises a gravel shovel plate, and the gravel shovel plate is hinged to a roadheader body; two groups of feeding wheels are arranged on the gravel shovel plate, and a conveyor belt assembly is arranged at the bottom of the roadheader main body between the two groups of feeding wheels; a plurality of feeding blades are arranged in the circumferential direction of the feeding wheel, the feeding blades comprise a plurality of arc-shaped blades, the arc-shaped blades are provided with a plurality of linear blades at intervals, and the maximum length from the linear blades to the circle center of the feeding wheel is larger than the length from the arc-shaped blades to the circle center of the feeding wheel. Compared with the prior art, by means of the arc-shaped blades, the long linear blades can make contact with far materials firstly, accumulated broken stone materials are scattered, large materials can be crushed, stress of the arc-shaped blades is reduced, and the service life of the arc-shaped blades can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of full - face roadheaders, in particular to a coal material conveying device for the airborne conveyor of a full - face roadheader. Background Technique

[0002] A full - face roadheader, abbreviated as a fully mechanized roadheader, is a comprehensive mechanized device integrating functions such as tunneling, rock loading, coal transportation, and even support and track nailing. It is also called a roadheader, mainly used in the processes of coal mine exploitation, roadway excavation, etc. It includes a traveling device, a tunneling device, a dust - reducing device, and a conveying device. During the traveling of the traveling device, the tunneling head of the tunneling device is used to tunnel the mining face. After the tunneling head completes the mining, materials such as rocks and coal ores fall to the ground, and the materials are transported out of the tunneling face through the conveying device of the full - face roadheader. The existing conveying device usually includes a scraper plate part located at the bottom of the full - face roadheader and a conveyor belt device. Two groups of blade assemblies on the scraper plate part scrape the materials on the ground onto the conveyor belt device for transportation. However, when the existing scraper plate part is in use, in order to reduce the wear of the blades, the existing blades are usually designed to be arc - shaped. However, the inventor found that when the arc - shaped blades rotate, the materials will adapt, and the materials at the outer edge of the blades cannot be scraped. Moreover, there is material accumulation and large - sized materials. The arc - shaped blades are relatively smooth, with poor crushing and piling - breaking effects. The arc - shaped blades bear a large impact and are prone to damage. Compared with straight - shaped blades, the maintenance and replacement costs are relatively high, and large - sized materials falling onto the conveyor belt device are likely to cause damage to it. Content of the Utility Model

[0003] To solve the technical problems existing in the above - mentioned background technique, the utility model provides a coal material conveying device for the airborne conveyor of a full - face roadheader.

[0004] The technical solution of the utility model is as follows:

[0005] A coal material conveying device for the airborne conveyor of a full - face roadheader, the full - face roadheader includes a full - face roadheader main body, a tunneling arm is installed at the front end of the full - face roadheader main body, a cantilever section is installed at the front end of the tunneling arm, a tunneling head is installed at the front end of the cantilever section, and a scraper plate part is arranged at the bottom of the tunneling head. The scraper plate part includes a crushed stone scraper plate, and the crushed stone scraper plate is hinged to the full - face roadheader main body;

[0006] Two groups of feeding wheels are arranged on the crushed stone scraper plate, and a conveyor belt assembly is arranged at the bottom of the full - face roadheader main body between the two groups of feeding wheels;

[0007] A plurality of feeding blades are circumferentially arranged on the feeding wheels, and the feeding blades include a plurality of arc - shaped blades. A plurality of straight - shaped blades are arranged at intervals between the plurality of arc - shaped blades, and the maximum length of the straight - shaped blades from the center of the feeding wheel is greater than the length of the arc - shaped blades from the center of the feeding wheel.

[0008] To improve the crushing effect on the materials on the ground, crushing plates are provided on the upper end surfaces of the arc-shaped blades and the straight-shaped blades.

[0009] To ensure the feeding and crushing effects, three arc-shaped blades are arranged circumferentially along the feeding wheel, and two straight-shaped blades are provided, and are spaced between the three arc-shaped blades.

[0010] To increase the range of material pushing and reduce the accumulation of materials on the gravel shoveling plate, the minimum distance between the two right-angled shapes during the rotation on different feeding wheels is less than 1 / 2 of the width of the conveyor belt assembly.

[0011] To be able to dust the falling stones in the mining area and the mining area of the tunneling cutter head, multiple water distribution cavity rings are installed at intervals on the outer edge surface of the cantilever section, and a water pumping assembly is connected. Multiple first water passing holes are circumferentially opened in each water distribution cavity ring;

[0012] A water collection sleeve ring is correspondingly arranged on the side of each water distribution sleeve ring away from the tunneling arm. Multiple first through holes communicating with the first water passing holes are opened in the water collection sleeve ring, and atomizing nozzles are installed at the first through holes.

[0013] To be able to dust the gravel near the conveyor belt assembly, a water distribution cavity plate and a water collection plate are provided on the lower end surface of the tunneling arm, and the water distribution cavity plate is communicated with the water pumping assembly. Multiple second water passing holes and second through holes communicating with each other are respectively opened in the water distribution cavity plate and the water collection plate, and atomizing nozzles facing the gravel shoveling plate are installed at the ends of the second through holes.

[0014] The specific design of the water pumping assembly is that the water pumping assembly includes a high-pressure water pump arranged in the tunneling arm, and the high-pressure water pump is connected to a water source through a water inlet pipe and the water outlet end is connected to a water outlet pipe penetrating the tunneling arm;

[0015] The water outlet pipe is connected to a multi-way pipe, and its two water outlets are connected to a first branch pipe and a second branch pipe. The first branch pipe is communicated with the inner cavity of the water distribution cavity plate, the second branch pipe extends towards the tunneling machine head, and is respectively communicated with the inner cavities of multiple water distribution cavity rings through multiple third branch pipes.

[0016] To facilitate the installation of the atomizing nozzle on the side inclined towards the gravel shoveling plate, the second through hole is opened in an L shape extending from the end surface of the water distribution cavity plate towards its bottom surface.

[0017] To facilitate the installation of the atomizing nozzle, a bent pipe is installed at the second through hole on the bottom surface of the water distribution cavity plate, and the end away from the second through hole is inclined towards the gravel shoveling plate and the atomizing nozzle is installed.

[0018] The beneficial effects of the present utility model are as follows: The present utility model is a coal material conveying device for the on-board conveyor of a full-section tunneling machine. Firstly, through the setting of the tunneling arm and the tunneling head, the tunneling work can be realized, and through the gravel shovel plate arranged on the shovel plate part, the conveying of the mined gravel can be realized in cooperation with the feeding wheel and the blade. Secondly, the feeding blades are divided into arc-shaped and straight-shaped, and the length of the straight-shaped blade is greater than that of the arc-shaped blade. On the one hand, the different lengths enable multiple blades to pick up gravel materials at different distances. On the other hand, the longer straight-shaped blade can first touch the farther materials, disperse the accumulated gravel materials, and break up the larger pieces of materials, reducing the force on the arc-shaped blade and improving the service life of the arc-shaped blade. Compared with replacing and repairing the straight-shaped blade, the cost is greatly reduced. Finally, by setting multiple water distribution sleeve rings and atomizing nozzles, dust can be reduced at the position of the falling stones at the bottom of the tunneling head, and through the atomizing nozzles connected by the water collecting plate, dust can be reduced for the gravel materials at the conveyor belt assembly position, greatly reducing the dust of the materials at the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0020] In the drawings:

[0021] Figure 1 It is a schematic diagram of a partial structure of a full-section tunneling machine;

[0022] Figure 2 It is a partial side view of the full-section tunneling machine (the tunneling head is not shown);

[0023] Figure 3 It is a top view of the shovel plate part;

[0024] Figure 4 It is a schematic diagram of the structure of the water pump assembly;

[0025] The components represented by the reference numerals in the drawings are:

[0026] 1. Full-section tunneling machine main body; 2. Tunneling arm; 3. Cantilever section; 4. Tunneling head; 5. Shovel plate part; 51. Gravel shovel plate; 52. Feeding wheel; 53. Arc-shaped blade; 54. Straight-shaped blade; 55. Crushing plate; 6. Conveyor belt assembly; 7. Water distribution cavity ring; 8. Water pump assembly; 81. High-pressure water pump; 82. Water inlet pipe; 83. Water outlet pipe; 84. Multi-way pipe; 85. First branch pipe; 86. Second branch pipe; 87. Third branch pipe; 88. Bent pipe; 89. Electromagnetic valve; 9. First water passing hole; 10. Water collecting sleeve ring; 11. First through hole; 12. Atomizing nozzle; 13. Water distribution cavity plate; 14. Water collecting plate; 15. Second water passing hole; 16. Second through hole. Detailed implementation manners

[0027] The exemplary implementation manners of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0028] Embodiment

[0029] This embodiment provides a coal material conveying device for the on-board conveyor of a full-face roadheader. Refer to Figure 1 , the full-face roadheader includes a full-face roadheader main body 1, a tunneling arm 2 is installed at the front end of the full-face roadheader main body 1, a cantilever section 3 is installed at the front end of the tunneling arm 2, and a tunneling head 4 is installed at the front end of the cantilever section 3. Among them, the full-face roadheader main body 1 can drive the tunneling arm 2 to swing in multiple directions, and can drive the tunneling head 4 to rotate through the driving device configured thereon, which is the basic function of the full-face roadheader and can be implemented by using the prior art without redundant description. A scraper plate part 5 is arranged at the bottom of the tunneling head 4, and the scraper plate part 5 is integrally connected to the full-face roadheader main body 1. The scraper plate part 5 includes a crushed stone scraper plate 51. The full-face roadheader main body 1 can drive the crushed stone scraper plate 51 to move up and down, which can also be implemented by using the prior art. The crushed stone scraper plate 51 is hinged to the full-face roadheader main body 1, and the full-face roadheader main body 1 can drive the crushed stone scraper plate 51 to move up and down around the hinge point.

[0030] In this embodiment, two groups of feeding wheels 52 are arranged on the crushed stone scraper plate 51. Combining Figure 2 and Figure 3 , a driving assembly for driving the feeding wheels 52 to rotate is arranged inside the full-face roadheader main body 1. A conveyor belt assembly 6 is arranged at the bottom of the full-face roadheader main body 1 between the two groups of feeding wheels 52, which is consistent with the design of the existing full-face roadheader. A plurality of feeding blades are circumferentially arranged on the feeding wheels 52. As one of the main design points of this solution, the feeding blades include a plurality of arc-shaped blades 53, and the direction in which the arc-shaped blades 53 bulge outwards is the same as the rotation direction of the feeding wheels. The arc-shaped blades 53 gradually become narrower from the direction towards away from the feeding wheels 52. A plurality of linear blades 54 are arranged at intervals among the plurality of arc-shaped blades 53. The linear blades 54 refer to those surrounded by straight lines on all sides. In this solution, the overall shape is trapezoidal, which is convenient for piling up and crushing materials. In this solution, three arc-shaped blades 53 are arranged along the circumference of the feeding wheels 52, and two linear blades 54 are arranged, and are spaced between the three arc-shaped blades 53. By arranging the linear blades 54 at intervals, it can touch the piled or larger pieces of materials at multiple positions during rotation, and can improve the efficiency of piling up and crushing.

[0031] Moreover, in order to further improve the piling up and crushing effect of the blades, crushing plates 55 are arranged on the upper end surfaces of the arc-shaped blades 53 and the linear blades 54. Through the upwardly protruding crushing plates 55, the feeding area of the blades can be enlarged, the feeding efficiency can be improved, and the larger crushed stone materials can also be broken.

[0032] On the basis of the above structure, the maximum length of the straight blade 54 from the center of the feeding wheel 52 is greater than the length of the arc blade 53 from the center of the feeding wheel 52, that is, the overall length of the two straight blades 54 is greater than that of the arc blade 53. When the feeding wheel drives all the blades to rotate, the longer straight blade 54 first comes into contact with the material, enabling it to break up and crush the material first. Then, as the roadheader advances, the arc blade 53 deflects the material into the conveyor belt assembly. Because compared with the relatively smooth arc blade 53, it is more destructive to the piled-up material and larger material, and can replace the arc blade 53 for crushing, which can protect it and slow down its damage speed. Moreover, the minimum distance between the two right-angled blades on different feeding wheels 52 during the rotation process is less than 1 / 2 of the width of the conveyor belt assembly 6. Such a design can ensure that the straight blade 54 has a larger rotation range on the gravel shovel plate 51, deflecting more material into the conveyor belt assembly 6 and reducing the accumulation on the gravel shovel plate 51.

[0033] In this embodiment, the present solution also designs a dust reduction assembly. Among them, a plurality of water distribution chamber rings 7 are installed at intervals on the outer edge surface of the cantilever section 3. The water distribution chamber rings 7 are sleeved on the cantilever section 3, and a plurality of water distribution chamber rings 7 are arranged at intervals and connected to a water pumping assembly 8 to provide water source for the inner cavity. A plurality of first water passing holes 9 are circumferentially formed in each water distribution chamber ring 7. On the side of each water distribution sleeve ring away from the roadheader arm 2, a water collection sleeve ring 10 is correspondingly arranged. Each water collection sleeve ring 10 is installed on the side of the corresponding water distribution chamber ring 7 close to the roadheader head 4. A plurality of first through holes 11 communicating with the first water passing holes 9 are formed in the water collection sleeve ring 10. An atomizing nozzle 12 is installed at the first through hole 11. The model of the atomizing nozzle 12 can be JTB9. The water pumping assembly 8 can send the water source through the first water passing holes 9 into the first through holes 11 and finally spray out from the atomizing nozzle 12.

[0034] On the basis of the above structure, two water distribution chamber rings 7 are provided, and two corresponding water collection sleeve rings 10 are provided. Secondly, the outer diameters of the water distribution chamber ring 7 and its corresponding water collection sleeve ring 10 are the same, and the outer diameter of the water distribution chamber ring 7 close to the roadheader arm 2 is greater than the other one, which can realize dust reduction in areas of different heights. Moreover, the first through hole 11 is formed in an L shape from the end face of the water collection sleeve ring 10 towards its outer edge surface, and a bent pipe 88 is installed at the end. The end of the bent pipe 88 away from the second through hole 16 is inclined towards the outside away from the water collection sleeve ring 10 and an atomizing nozzle 12 is installed, so that the atomizing nozzle 12 is inclined towards the tunneling face.

[0035] Moreover, a water distribution chamber plate 13 and a water collection plate 14 are provided on the lower end face of the tunneling arm 2. The water distribution chamber plate 13 is communicated with the water pumping assembly 8. A plurality of communicating second water passing holes 15 and second through holes 16 are respectively formed in the water distribution chamber plate 13 and the water collection plate 14. The end of the second through hole 16 is provided with an atomizing nozzle 12 facing the gravel shoveling plate 51. The second through hole 16 is formed in an L shape extending from the end face of the water distribution chamber plate 13 towards its bottom surface, aiming to vertically downwardly open the second through hole 16 to facilitate the installation of the pipeline of the atomizing nozzle 12. The pipeline adopts a bent pipe 88 and is installed at the second through hole 16 on the bottom surface of the water distribution chamber plate 13. The end far from the second through hole 16 is inclined towards the gravel shoveling plate 51 and the atomizing nozzle 12 is installed. When the feeding wheel rotates to dial the material, the water pumping assembly 8 provides water source for the water distribution chamber plate 13, and then through the second water passing holes 15 and the second through holes 16, the water source is sprayed onto the gravel shoveling plate 51 by the atomizing nozzle 12 to dust the dialed material.

[0036] On the basis of the above structure, combined with Figure 4 , the water pumping assembly 8 includes a high-pressure water pump 81 arranged in the tunneling arm 2. The high-pressure water pump 81 is connected to the water source through a water inlet pipe 82, and the water outlet end is connected to a water outlet pipe 83 passing through the tunneling arm 2. The water outlet pipe 83 is connected with a multi-way pipe 84, and its two water outlets are connected with a first branch pipe 85 and a second branch pipe 86. The first branch pipe 85 is communicated with the inner cavity of the water distribution chamber plate 13. The second branch pipe 86 extends towards the tunneling head 4 and is respectively communicated with the inner cavities of a plurality of water distribution chamber rings 7 through a plurality of third branch pipes 87. Moreover, electromagnetic valves 89 are arranged on the first branch pipe 85 and the third branch pipes 87. By controlling different electromagnetic valves 89, water supply to the atomizing nozzles 12 at different positions is realized. The driver can open the corresponding electromagnetic valve 89 according to the demand, so that the dust reduction position is more accurate and flexible.

Claims

1. A coal conveying device for an onboard conveyor of a tunnel boring machine, the tunnel boring machine comprising a tunnel boring machine body (1), a tunneling arm (2) being installed at the front end of the tunnel boring machine body (1), a cantilever section (3) being installed at the front end of the tunneling arm (2), a tunnel boring machine head (4) being installed at the front end of the cantilever section (3), and a shovel plate section (5) being provided at the bottom of the tunnel boring machine head (4), characterized in that: The shovel plate portion (5) comprises a stone crushing shovel plate (51), and the stone crushing shovel plate (51) is hinged to the main body (1) of the excavator; Two groups of feed wheels (52) are arranged on the stone crushing shovel plate (51), and a conveyor belt assembly (6) is arranged at the bottom of the excavator body (1) between the two groups of feed wheels (52); The feed wheel (52) is circumferentially arranged with a plurality of feed blades, and the feed blades include a plurality of arc-shaped blades (53), a plurality of straight blades (54) are arranged at intervals between the plurality of arc-shaped blades (53), and the maximum length of the straight blades (54) from the center of the feed wheel (52) is greater than the length of the arc-shaped blades (53) from the center of the feed wheel (52).

2. The coal conveying device of the conveyor mounted on the multi-purpose excavator according to claim 1, characterized in that: The upper end surfaces of the arc-shaped blades (53) and the straight-line blades (54) are both provided with crushing plates (55).

3. The coal conveying device of the conveyor mounted on the multi-purpose excavator according to claim 1, characterized in that: Three arc-shaped blades (53) are arranged along the circumference of the feed wheel (52), and two straight-line blades (54) are provided and are spaced between the three arc-shaped blades (53).

4. The coal conveying device of the conveyor mounted on the tunnel boring machine according to claim 1, characterized in that: The minimum distance between two right-angled paths on different feed wheels (52) during rotation is less than 1 / 2 of the width of the conveyor belt assembly (6).

5. The coal conveying device of the conveyor mounted on the tunnel boring machine according to claim 1, characterized in that: The outer edge surface of the cantilever section (3) is provided with a plurality of water distribution cavity rings (7) at intervals and is connected to a water pump assembly (8), and each water distribution cavity ring (7) is provided with a plurality of first water holes (9) in the circumferential direction; A water collecting ring (10) is correspondingly arranged on one side of each water distribution ring away from the tunneling arm (2), and a plurality of first through holes (11) connected to the first water holes (9) are arranged in the water collecting ring (10), and an atomizing nozzle (12) is installed at the first through hole (11).

6. The coal conveying device of the conveyor mounted on the multi-purpose excavator according to claim 5, characterized in that: The lower end surface of the excavation arm (2) is provided with a water distribution chamber plate (13) and a water collection plate (14), and the water distribution chamber plate (13) is connected to the water pump assembly (8), and the water distribution chamber plate (13) and the water collection plate (14) are respectively provided with a plurality of connected second water holes (15) and second through holes (16), and an atomizing nozzle (12) facing the stone crushing shovel plate (51) is installed at the end of the second through hole (16).

7. The coal conveying device of the conveyor mounted on the multi-purpose excavator according to claim 6, characterized in that: The water pump assembly (8) comprises a high-pressure water pump (81) arranged in the excavation arm (2), and the high-pressure water pump (81) is connected to a water source via a water inlet pipe (82), and a water outlet end is connected to a water outlet pipe (83) that runs through the excavation arm (2); The water outlet pipe (83) is connected to a multi-way pipe (84), and its two water outlets are connected to a first branch pipe (85) and a second branch pipe (86), the first branch pipe (85) is connected to the inner cavity of the water distribution cavity plate (13), and the second branch pipe (86) extends toward the tunneling machine head (4) and is respectively connected to the inner cavities of multiple water distribution cavity rings (7) through multiple third branch pipes (87).

8. The coal conveying device of the conveyor mounted on the multi-purpose excavator according to claim 6, characterized in that: The second through hole (16) is formed in an L shape extending from the end surface of the water distribution chamber plate (13) toward the bottom surface thereof.

9. The coal conveying device of the conveyor mounted on a multi-purpose excavator according to claim 8, characterized in that: A bent pipe (88) is installed at the second through hole (16) on the bottom surface of the water distribution chamber plate (13), and an end away from the second through hole (16) is inclined toward the stone crushing shovel plate (51) and is installed with an atomizing nozzle (12).

Images