Spraying device in heading machine

Abstract

According to the spraying device in the heading machine, a water collection plate is arranged on the side, away from a heading arm, of a water distribution cavity plate, and a first through hole communicated with a first water passing hole is formed in the water collection plate; a plurality of water distribution cavity rings are installed on the outer edge face of the cantilever section at intervals, a plurality of second water passing holes are formed in each water distribution cavity ring, a water collection lantern ring is correspondingly arranged on the side, away from the tunneling arm, of each water distribution lantern ring, and a plurality of second through holes communicated with the second water passing holes are formed in the water collection lantern ring; atomizing nozzles are installed at the ends, away from the tunneling arm, of the first through hole and the second through hole correspondingly, and the water distribution cavity plate and the water distribution cavity ring are connected with a water source through a water pumping assembly. The two water distribution cavity rings and the two communicated water collection lantern rings are arranged and matched with the atomizing nozzles which are obliquely installed in the circumferential direction, the atomizing nozzles are annularly arranged, and the dust falling area of the heading machine head is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines, in particular to a spray device inside a tunnel boring machine. Background Art

[0002] With the rapid growth of urban rail transit, railways, highways, water conservancy, municipal engineering and other construction projects, tunneling machinery has also ushered in rapid development. The most commonly used equipment is the tunneling machine, which is a machine used to dig tunnels under the flat ground. It is a comprehensive equipment that integrates mechanical rock crushing, slag discharge and support to implement continuous operations. It mainly includes a walking mechanism, a tunneling mechanism, a loading mechanism, a transfer mechanism and a dust reduction mechanism. As the walking mechanism moves forward, the tunneling machine head in the working mechanism continuously crushes rocks. During the crushing process and when the machine is stopped, a dust reduction device is required to reduce dust in the tunneling tunnel. The existing dust reduction device is usually Spray device, but the existing spray device is usually arranged at the front end of the tunneling arm, and a row of atomizing nozzles are arranged horizontally, which can achieve a certain degree of dust reduction. However, in actual use, the inventor found that the dust reduction effect is poor, and it can only reduce dust in the area near the tunneling head. The dust reduction angle and method are relatively single. As the tunneling work progresses, due to the high-speed rotation of the tunneling head, more dust will float in the air, and when the rock falls, it will fall to the bottom of the tunnel and generate more dust. It cannot play a dust reduction role in a larger range. When the dust is small, the dust reduction component with the same effect is also turned on, which may waste more water resources. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a spray device inside a tunnel boring machine.

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

[0005] A spray device in a tunnel boring machine, the tunnel boring machine comprising a tunnel boring machine body, a tunnel boring arm installed at the front end of the tunnel boring arm, a cantilever section installed at the front end of the cantilever section, a tunnel boring machine head installed at the front end of the cantilever section, a shovel plate portion provided at the bottom of the tunnel boring machine head, a water distribution cavity plate installed at the upper end of the front part of the tunnel boring arm, a plurality of first water holes provided in the water distribution cavity plate, a water collecting plate provided at a side of the water distribution cavity plate away from the tunnel boring arm, a first through hole connected to the first water hole provided in the water collecting plate;

[0006] The outer edge surface of the cantilever section is provided with a plurality of water distribution cavity rings at intervals, and each water distribution cavity ring is provided with a plurality of second water holes, and a water collection ring is correspondingly provided on the side of each water distribution ring away from the tunneling arm, and a plurality of second through holes connected with the second water holes are provided in the water collection ring;

[0007] Atomizing nozzles are installed at the ends of the first through hole and the second through hole away from the tunneling arm, and the water distribution cavity plate and the water distribution cavity ring are connected to a water source through a water pump assembly.

[0008] In order to increase the water spraying area, two water distribution cavity rings are provided, and two water collection rings are provided correspondingly.

[0009] In order to spray water to reduce dust at different heights, the outer diameter of the water distribution cavity ring is consistent with its corresponding water collection ring, and the outer diameter of the water distribution cavity ring close to the tunneling arm is larger than the other one.

[0010] In order to facilitate the installation of the atomizing nozzle on the outer edge surface of the water collecting collar, the second through hole is formed in an L shape from the end surface of the water collecting collar toward the outer edge surface thereof.

[0011] In order to direct the water mist sprayed by the atomizing nozzle toward the excavation working face, a bent pipe is installed at the second through hole on the outer edge of the water collecting ring. The end of the bent pipe away from the second through hole is inclined toward the outside of the water collecting ring and is equipped with the atomizing nozzle.

[0012] In order to enable the spray to reduce dust on the outside of the tunneling machine head, the end of the bent pipe away from the second through hole is inclined at an angle of 40°-55° toward the outside away from the water collecting collar.

[0013] The water pump assembly is specifically designed as follows: the water pump 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 a water outlet end is connected to a water outlet pipe running through the tunneling arm;

[0014] 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 connected to the inner cavity of the water distribution cavity plate, and the second branch pipe extends toward the tunneling machine head and is connected to the inner cavity of the water distribution cavity ring through two third branch pipes.

[0015] In order to facilitate graded water supply and achieve dust reduction for different dust amounts generated, solenoid valves are provided at the first branch pipe and the third branch pipe.

[0016] In order to reduce dust when the shovel plate is transporting materials, a water distribution cavity plate and a water collecting plate are symmetrically arranged on the lower end surface of the excavation arm, and the multi-way pipe is connected to the water distribution cavity plate through the fourth branch pipe. A plurality of third through holes are provided in the water collecting plate, and an atomizing nozzle facing the shovel plate is installed at the end of the third through hole.

[0017] The beneficial effects of the utility model are as follows: the utility model is a spray device inside a tunnel boring machine. Firstly, through the arrangement of a tunneling arm, a cantilever section and a tunnel boring machine head, basic tunneling work can be achieved, tunnel excavation and ore mining can be completed, and basic dust reduction work can be achieved in the tunnel boring machine head area through the water collecting plate arranged at the front end of the tunneling arm in cooperation with the atomizing nozzle; secondly, by arranging two water distribution cavity rings and two connected water collecting rings, in cooperation with the atomizing nozzles installed obliquely in the circumferential direction, the atomizing nozzles are arranged in a ring shape, thereby expanding the dust reduction area for the tunnel boring machine head; finally, through the arrangement of a water pump assembly, the pipeline cooperates with the solenoid valve, so that the driver can open the corresponding solenoid valve according to the dust size of the tunneling working face, and all of them can be opened to maximize the dust reduction effect, and when the dust is small, the driver can open one or more solenoid valves according to actual needs, which can save water flow and achieve graded dust reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the partial structure of the tunnel boring machine;

[0021] Figure 2 It is a side view of the partial structure of the tunnel boring machine;

[0022] Figure 3 This is the enlarged view of point A;

[0023] Figure 4 This is an enlarged view of point B;

[0024] Figure 5 It is a side sectional view of the water distribution cavity ring;

[0025] Figure 6 It is a schematic diagram of the structure of the water pump assembly;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Tunneling machine body; 2. Tunneling arm; 3. Cantilever section; 4. Tunneling machine head; 5. Shovel plate; 6. Water distribution cavity plate; 7. First water through hole; 8. Water collecting plate; 9. First through hole; 10. Water distribution cavity ring; 11. Second water through hole; 12. Water collecting collar; 13. Second through hole; 14. Atomizing nozzle; 15. Bend pipe; 16. High-pressure water pump; 17. Water inlet pipe; 18. Water outlet pipe; 19. Multi-way pipe; 20. First branch pipe; 21. Second branch pipe; 22. Third branch pipe; 23. Solenoid valve; 24. Fourth branch pipe; 25. Third water through hole; 26. Third through hole. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0029] Example

[0030] This embodiment provides a spray device in a tunnel boring machine, Figure 1 The tunnel boring machine includes a tunnel boring machine body 1, and a tunnel boring arm 2 is installed at the front end of the tunnel boring machine body 1, a cantilever section 3 is installed at the front end of the tunnel boring arm 2, and a tunnel boring machine head 4 is installed at the front end of the cantilever section 3, wherein the tunnel boring machine body 1 can drive the tunnel boring arm 2 to swing in multiple directions, and can drive the tunnel boring machine head 4 to rotate through the driving device configured by itself, which is the basic function of the tunnel boring machine, and the existing technology can be used without further elaboration. A shovel plate part 5 is provided at the bottom of the tunnel boring machine head 4, and the shovel plate part 5 is connected to the comprehensive tunnel boring machine body as a whole. The tunnel boring machine body 1 can drive the shovel plate part 5 to move up and down and the rotation of the internal blades, and the existing technology can also be used.

[0031] In this embodiment, as one of the main design points of this scheme, a water distribution cavity plate 6 is installed at the upper front end of the tunneling arm 2, and the interior is a cavity. The water distribution cavity plate 6 is set in a U shape and is buckled on the tunneling arm 2. Figure 3 , and a plurality of first water holes 7 are provided in the water distribution chamber plate 6, a water collecting plate 8 is provided on the side of the water distribution chamber plate 6 away from the tunneling arm 2, which is also set to a U shape, and a first through hole 9 connected to the first water hole 7 is provided in the water collecting plate 8, and an atomizing nozzle 14 is installed at the end of the first through hole 9, and the model of the atomizing nozzle 14 is JTB9. The water entering the water distribution chamber plate 6 can enter the first through hole 9 through the first water hole 7, and then be sprayed out in the atomizing nozzle 14 to reduce dust in the tunneling machine head 4 area. In addition, in order to facilitate dust reduction on the shovel plate part 5 and reduce dust during material transportation, the water distribution chamber plate 6 and the water collecting plate 8 are symmetrically provided on the lower end surface of the tunneling arm 2, combined with Figure 2 (The boring machine head 4 is not shown in this view), the structure and connection relationship of the water distribution chamber plate 6 and the water collecting plate 8 are consistent with those of the upper end, and a plurality of interconnected third water holes 25 and third through holes 26 are respectively provided in the water distribution chamber plate 6 and the water collecting plate 8. The third through hole 26 is provided in an L-shape extending from the end surface of the water distribution chamber plate 6 toward its bottom surface, and an atomizing nozzle 14 facing the shovel plate part 5 is installed at the end of the third through hole 26. The water of the water distribution chamber plate 6 enters the third through hole 26 through the third water hole 25, and is finally sprayed to the shovel plate part 5 by the atomizing nozzle 14 to reduce dust.

[0032] Secondly, the outer edge surface of the cantilever section 3 is provided with a plurality of water distribution cavity rings 10 at intervals, combined with Figure 4 and Figure 5, and each water distribution cavity ring 10 is provided with a plurality of second water holes 11, and a water collecting ring 12 is correspondingly arranged on the side of each water distribution ring away from the tunneling arm 2, and a plurality of second through holes 13 connected with the second water holes 11 are arranged in the water collecting ring 12, and an atomizing nozzle 14 is installed on the end of the second through holes 13 away from the tunneling arm 2. In this scheme, two water distribution cavity rings 10 are arranged at intervals, and two water collecting rings 12 are correspondingly arranged, and each water collecting ring 12 is located at the front side of the corresponding water distribution cavity ring 10.

[0033] On the basis of the above structure, the water distribution cavity ring 10 and its corresponding water collecting ring 12 have the same outer diameter, and the outer diameter of the water distribution cavity ring 10 close to the excavation arm 2 is larger than the other one, that is, the outer diameter of the water collecting ring 12 at the front end is smaller. On the one hand, it can block the atomizing nozzle 14 installed on the rear end water collecting ring 12, and on the other hand, it makes the spray more layered, which is convenient for graded spray dust reduction at multiple heights and multiple positions in the excavation area.

[0034] It should be noted that the second through hole 13 is opened in an L shape from the end face of the water collecting ring 12 toward its outer edge face, that is, the second through hole 13 is clamped to the outer edge face of the water collecting ring 12, and a bent tube 15 is installed at the second through hole 13 on the outer edge of the water collecting ring 12. In this scheme, the end of the bent tube 15 away from the second through hole 13 is inclined at an angle of 40°-55° toward the outside away from the water collecting ring 12, and the end of the bent tube 15 away from the second through hole 13 is inclined toward the outside away from the water collecting ring 12 and an atomizing nozzle 14 is installed, so that the atomizing nozzle 14 can be inclined at a certain angle toward the outer circle of the winding head, and then the water mist sprayed from the atomizing nozzle 14 can diffuse toward the outer circle of the tunneling head 4, and because it is arranged circumferentially on the water collecting ring 12, the atomizing nozzle 14 near the bottom can spray dust reduction in the direction of the gravel dropped by the tunneling head 4.

[0035] In this solution, the water distribution cavity plate 6 and the water distribution cavity ring 10 are connected to the water source through a water pump assembly, wherein, in combination with Figure 6 The water pump assembly includes a high-pressure water pump 16 arranged in the tunneling arm 2, and the high-pressure water pump 16 is connected to the water source through a water inlet pipe 17, and the water outlet end is connected to a water outlet pipe 18 that runs through the tunneling arm 2, and the water outlet pipe 18 is connected to a multi-way pipe 19, which is a four-way pipe in this scheme, and its two water outlets are connected to a first branch pipe 20 and a second branch pipe 21, the first branch pipe 20 is connected to the inner cavity of the water distribution cavity plate 6, and can supply water to the inner cavity of the water distribution cavity plate 6, the second branch pipe 21 extends toward the tunneling machine head 4, and is respectively connected to the inner cavity of the water distribution cavity ring 10 through two third branch pipes 22, and can supply water to the inner cavities of the two water distribution cavity rings 10, the multi-way pipe 19 is connected to the water distribution cavity plate 6 through the fourth branch pipe 24, and can supply water to the water distribution cavity plate 6 at the lower end.

[0036] It should also be noted that in order to be able to control each chamber so as to supply water when needed, the first branch pipe 20, the third branch pipe 22 and the fourth branch pipe 24 are each provided with an electromagnetic valve 23, and the on-off of the pipeline is controlled by the electromagnetic valve 23. This design facilitates the driver to control the on-off of each pipeline according to the amount of dust and the size of the dust in the excavation area, avoiding the waste of water resources caused by water supply to all pipelines when the dust is relatively small, making the dust reduction position more accurate.

Claims

1. A spray device in a tunnel boring machine, the tunnel boring machine comprising a tunnel boring machine body (1), a tunnel boring arm (2) being mounted at the front end of the tunnel boring machine body (1), a cantilever section (3) being mounted at the front end of the tunnel boring arm (2), a tunnel boring machine head (4) being mounted at the front end of the cantilever section (3), a shovel plate section (5) being arranged at the bottom of the tunnel boring machine head (4), characterized in that: A water distribution chamber plate (6) is installed at the upper front end of the tunneling arm (2), and a plurality of first water holes (7) are provided in the water distribution chamber plate (6); a water collecting plate (8) is provided on the side of the water distribution chamber plate (6) away from the tunneling arm (2), and a first through hole (9) communicating with the first water hole (7) is provided in the water collecting plate (8); The outer edge surface of the cantilever section (3) is provided with a plurality of water distribution cavity rings (10) at intervals, and each water distribution cavity ring (10) is provided with a plurality of second water holes (11), and a water collection ring (12) is provided on a side of each water distribution ring away from the tunneling arm (2), and the water collection ring (12) is provided with a plurality of second through holes (13) in communication with the second water holes (11); Atomizing nozzles (14) are installed at the ends of the first through hole (9) and the second through hole (13) away from the tunneling arm (2), and the water distribution cavity plate (6) and the water distribution cavity ring (10) are connected to a water source via a water pump assembly.

2. The internal spray device of the boring machine according to claim 1, characterized in that: The water distribution cavity rings (10) are provided in two pieces, and the water collection sleeve rings (12) are provided in two pieces correspondingly.

3. The internal spray device of the boring machine according to claim 2, characterized in that: The water distribution cavity ring (10) has the same outer diameter as its corresponding water collection sleeve ring (12), and the outer diameter of the water distribution cavity ring (10) close to the tunneling arm (2) is larger than the other one.

4. The internal spray device of the boring machine according to claim 1, characterized in that: The second through hole (13) is formed in an L-shape from the end surface of the water collecting collar (12) toward the outer edge surface thereof.

5. The internal spray device of the boring machine according to claim 4, characterized in that: A bent tube (15) is installed at the second through hole (13) on the outer edge of the water collecting collar (12); one end of the bent tube (15) away from the second through hole (13) is inclined toward the outside away from the water collecting collar (12) and is installed with an atomizing nozzle (14).

6. The internal spray device of the boring machine according to claim 5, characterized in that: The end of the bent tube (15) away from the second through hole (13) is inclined at an angle of 40°-55° toward the outside away from the water collecting collar (12).

7. The internal spray device of the boring machine according to claim 2, characterized in that: The water pump assembly comprises a high-pressure water pump (16) arranged in the tunneling arm (2), and the high-pressure water pump (16) is connected to a water source via a water inlet pipe (17), and a water outlet end is connected to a water outlet pipe (18) that runs through the tunneling arm (2); The water outlet pipe (18) is connected to a multi-way pipe (19), and its two water outlets are connected to a first branch pipe (20) and a second branch pipe (21), the first branch pipe (20) is connected to the inner cavity of the water distribution cavity plate (6), and the second branch pipe (21) extends toward the tunneling machine head (4) and is respectively connected to the inner cavity of the water distribution cavity ring (10) through two third branch pipes (22).

8. The internal spray device of the boring machine according to claim 7, characterized in that: The first branch pipe (20) and the third branch pipe (22) are both provided with solenoid valves (23).

9. The internal spray device of the boring machine according to claim 1, characterized in that: The lower end surface of the tunneling arm (2) is symmetrically provided with a water distribution chamber plate (6) and a water collection plate (8), and the multi-way pipe (19) is connected to the water distribution chamber plate (6) through a fourth branch pipe (24), and a plurality of third water holes (25) and third through holes (26) are respectively provided in the water distribution chamber plate (6) and the water collection plate (8), and an atomizing nozzle (14) facing the shovel plate part (5) is installed at the end of the third through hole (26).

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