A ventilation device for a tunneling machine

Abstract

The utility model discloses a kind of ventilation devices for tunnel of shield machine, belong to shield machine technical field, specifically including ventilation mechanism and protection mechanism, the ventilation mechanism is fixedly connected on protection mechanism, the protection mechanism is fixedly connected on shield machine main machine or shield machine rear supporting trailer;The ventilation mechanism includes wind tube, one end of the wind tube is fixedly connected on the fan outlet of shield machine body through mounting seat, for making wind tube and fan outlet communicate, another end of the wind tube is fixedly connected with air outlet;The protection mechanism includes base and protection frame, the base is fixedly connected with protection frame, the protection frame is arranged in the outside of wind tube in a surrounding manner, for forming external protection to wind tube;The utility model can protect wind tube in all directions through protection frame of integrated setting in the outside of wind tube, effectively avoid accidental collision damage in construction, greatly reduce failure rate and maintenance cost, guarantee the continuous reliable operation of ventilation device.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel boring machine technology, and specifically relates to a ventilation device for tunnel boring machines. Background Technology

[0002] During tunnel excavation, tunnel boring machines generate large amounts of dust, harmful gases, and high temperatures at the working face. To ensure the health and safety of construction workers, improve the working environment, and dissipate heat from the equipment, a powerful ventilation system is essential.

[0003] Traditional tunnel boring machine ventilation typically uses flexible or simple rigid ducts for forced or extracted ventilation. However, these ducts lack overall rigid protection and are prone to swaying and twisting during long-distance air delivery. Furthermore, they are easily damaged by collisions and scratches, leading to air leakage, ventilation failure, frequent maintenance, and reduced construction efficiency.

[0004] Therefore, there is a need to provide a ventilation device for tunnel boring machines to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a ventilation device for tunnel boring machines (TBMs), featuring an integrated protective structure that effectively prevents accidental collision damage during construction, significantly reduces failure rate and maintenance costs, and ensures the continuous and reliable operation of the ventilation system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ventilation device for tunnel boring machines, comprising a ventilation mechanism and a protective mechanism, wherein the ventilation mechanism is fixedly connected to the protective mechanism, and the protective mechanism is fixedly connected to the main body of the tunnel boring machine or a trailer attached to the rear of the tunnel boring machine; The ventilation mechanism includes a duct, one end of which is fixedly connected to the fan outlet of the tunnel boring machine body via a mounting base to connect the duct to the fan outlet, and the other end of which is fixedly connected to an air outlet hopper. The protective mechanism includes a base and a protective frame. The protective frame is fixedly connected to the base and is arranged around the outside of the air duct to provide external protection for the air duct.

[0007] Preferably, the ventilation duct includes multiple sections, which are fixedly connected end to end, and each section is a hollow structure with open ends.

[0008] Preferably, a sound-absorbing and noise-reducing layer is fixedly connected to the inner wall of the air duct.

[0009] Preferably, the air outlet hopper has a conical cylindrical structure, and the inner diameter of the end of the air outlet hopper connected to the air duct is smaller than the inner diameter of the other end of the air outlet hopper.

[0010] Preferably, the base includes two parallel main beams, and a plurality of reinforcing beams are provided between the two main beams, with both ends of the reinforcing beams fixedly connected to the main beams.

[0011] Preferably, support blocks are symmetrically fixedly connected to both sides of the lower edge of the air outlet duct, and the support blocks are fixedly connected to the adjacent reinforcing beam.

[0012] Preferably, the main beam is a U-shaped channel steel structure, and multiple reinforcing ribs are fixedly connected inside the U-shaped channel of the main beam. A hook seat corresponding to the reinforcing rib is fixedly connected to the top wall of the main beam, and the hook seat is provided with a lifting hole for the lifting hook to pass through.

[0013] Preferably, the protective frame includes multiple protective rings and multiple protective rods. The multiple protective rings are located between the mounting base and the air outlet and are spaced apart along the axial direction of the air duct. The multiple protective rings are fixedly connected to each other by the multiple protective rods.

[0014] Preferably, the mounting base and the adjacent reinforcing beam, as well as the protective ring and the adjacent reinforcing beam, are fixedly connected by a support plate.

[0015] Preferably, the ventilation device is configured in a two-way ventilation mode. By controlling the running direction of the shield machine fan, the gas at the front of the shield machine can be drawn out to the rear of the tunnel through the ventilation duct, or the air at the rear of the tunnel can be transported to the front of the shield machine through the ventilation duct.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by integrating a protective frame set on the outside of the ventilation duct, can protect the ventilation duct in all directions, effectively avoid accidental collision damage during construction, greatly reduce the failure rate and maintenance costs, and ensure the continuous and reliable operation of the ventilation device.

[0017] 2. The ventilation duct and protective frame of this utility model are rigidly connected by the base, support plate and other components to form a solid whole module. After being installed on the tunnel boring machine or trailer, it does not shake, has stable air resistance, high ventilation efficiency and will not interfere with surrounding equipment.

[0018] 3. This utility model effectively reduces airflow noise by setting a sound-absorbing and noise-reducing layer on the inner wall of the ventilation duct, and the conical air outlet makes the air delivery softer, together creating a relatively quiet and comfortable environment for tunnel construction. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a side view of the structure of this utility model; In the diagram: 1. Air duct; 2. Mounting base; 3. Air outlet duct; 4. Main beam; 5. Reinforcing beam; 6. Support block; 7. Reinforcing rib; 8. Hook seat; 9. Lifting hook; 10. Protective ring; 11. Protective rod; 12. Support plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example Please see Figure 1-3 This embodiment provides the following technical solution: a ventilation device for tunnel boring machines, including a ventilation mechanism and a protective mechanism. The ventilation mechanism is fixedly connected to the protective mechanism, and the protective mechanism is fixedly connected to the main body of the tunnel boring machine or the trailer attached to the rear of the tunnel boring machine. Through the ventilation mechanism and the protective mechanism, a solid integral module can be formed. After being installed on the tunnel boring machine or the trailer, it will not shake, the wind resistance will be stable, the ventilation efficiency will be high, and it will not interfere with the surrounding equipment.

[0022] The ventilation system includes a ventilation duct 1. One end of the ventilation duct 1 is fixedly connected to the fan outlet of the tunnel boring machine body via a mounting base 2, so as to connect the ventilation duct 1 with the fan outlet. The other end of the ventilation duct 1 is fixedly connected to an air outlet 3. The ventilation duct 1 includes multiple sections, and the ends of the multiple sections are fixedly connected by welding. The sections are hollow structures with open ends. By setting the ventilation duct 1 as a whole welded together, the air can be easily circulated.

[0023] Support blocks 6 are symmetrically fixedly connected to both sides of the lower edge of the air outlet duct 3. The support blocks 6 are fixedly connected to the adjacent reinforcing beam 5. In some embodiments, both ends of the support blocks 6 are fixedly connected to the air outlet duct 3 and the reinforcing beam 5 respectively by screws. The support blocks 6 can provide stable support for the end of the air duct 1 that is suspended on the protective mechanism.

[0024] In some embodiments, multiple support blocks 6 can be fixedly connected to both sides of the lower edge of the air duct 1, and both ends of the support blocks 6 can be fixedly connected to the air duct 1 and the adjacent reinforcing beam 5 respectively by screws.

[0025] In some embodiments, a sound-absorbing and noise-reducing layer is fixedly connected to the inner wall of the ventilation duct 1, and the air outlet 3 at one end of the ventilation duct 1 is a conical cylindrical structure. The inner diameter of the end of the air outlet 3 connected to the ventilation duct 1 is smaller than the inner diameter of the other end of the air outlet 3. By setting the sound-absorbing and noise-reducing layer on the inner wall of the ventilation duct 1, the airflow noise can be effectively reduced, and the conical cylindrical structure of the air outlet 3 can make the air delivery softer, together creating a relatively quiet and comfortable environment for tunnel construction.

[0026] The protective mechanism includes a base and a protective frame. The base includes two parallel main beams 4, which are fixedly connected to the main body of the tunnel boring machine or the trailer attached to the back of the tunnel boring machine by screws. Multiple reinforcing beams 5 are set between the two main beams 4, and both ends of the reinforcing beams 5 are fixedly connected to the main beams 4 by welding. The main beams 4 and the reinforcing beams 5 together form a solid planar load-bearing platform.

[0027] In some embodiments, the main beam 4 is a U-shaped channel steel structure, and multiple reinforcing ribs 7 are fixedly connected in the U-shaped channel of the main beam 4. The top wall of the main beam 4 is fixedly connected with a hook seat 8 corresponding to the reinforcing ribs 7. The hook seat 8 is provided with a lifting hole for the lifting hook 9 to pass through. The lifting hook 9 facilitates the overall lifting and relocation by forklift or hook.

[0028] A protective frame is fixedly connected to the base. The protective frame is set around the outside of the air duct 1 to form external protection for the air duct 1. By integrating the protective frame set on the outside of the air duct 1, the air duct 1 can be protected in all directions, effectively avoiding accidental collision damage during construction, greatly reducing the failure rate and maintenance costs, and ensuring the continuous and reliable operation of the ventilation device.

[0029] In some embodiments, the protective frame includes multiple protective rings 10 and multiple protective rods 11. The multiple protective rings 10 are located between the mounting base 2 and the air outlet duct 3 and are spaced apart along the axial direction of the air duct 1. The multiple protective rings 10 are fixedly connected to each other by multiple protective rods 11. The multiple protective rods 11 are distributed circumferentially around the air duct 1 on the outer side of the air duct 1. One of the outermost protective rings 10 is fixedly welded to the mounting base 2, and each protective rod 11 is fixedly welded to each protective ring 10. The protective rings 10 and the protective rods 11 form a cage-like structure, which can effectively resist impacts from the side and above.

[0030] The mounting base 2 and the adjacent reinforcing beam 5, as well as the protective ring 10 and the adjacent reinforcing beam 5, are fixedly connected by a support plate 12. The support plate 12 provides overall support for the mounting base 2 and the protective ring 10.

[0031] The ventilation system is configured for bidirectional ventilation. By controlling the direction of the shield machine's fan, it can draw the gas from the front of the shield machine to the rear of the tunnel through the ventilation duct 1, or transport the air from the rear of the tunnel to the front of the shield machine through the ventilation duct 1. It can be flexibly switched according to different needs such as tunneling and cleaning during the construction stage, and has wide adaptability.

[0032] The working principle of this utility model is as follows: When in use, the operator uses a lifting device such as a forklift to pass the hook through the lifting hole of the hook seat 8, which can lift the entire ventilation device smoothly and place it on the shield machine host or the designated area on the shield machine trailer. The main beam 4 of the base is then fixed to the shield machine host or the shield machine trailer by bolts. Subsequently, the outlet flange of the tunnel boring machine's fan is connected to and tightened with mounting base 2; When the tunnel boring machine advances forward, the fan is started to draw the dust and exhaust gas generated at the front of the tunnel boring machine into the air duct 1. When the airflow flows through the inner wall of the air duct 1, which is covered with a sound-absorbing and noise-reducing layer, some of the noise is absorbed and reduced. Finally, the airflow is smoothly and evenly discharged to the rear of the tunnel through the gradually expanding conical air outlet 3. When the fan rotates in the reverse direction, it draws fresh air from behind the tunnel into the ventilation duct 1 through the air outlet 3. As the airflow passes through the inner wall of the ventilation duct 1, which is covered with a sound-absorbing and noise-reducing layer, some of the noise is absorbed and reduced. Finally, the airflow is delivered to the working area at the front of the tunnel boring machine to provide fresh air for the personnel and dilute the dust.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation device for tunnel boring machines, characterized in that: It includes a ventilation mechanism and a protective mechanism, wherein the ventilation mechanism is fixedly connected to the protective mechanism, and the protective mechanism is fixedly connected to the shield machine host or the shield machine's rear trailer; The ventilation mechanism includes a duct (1), one end of which is fixedly connected to the fan outlet of the shield machine body via a mounting base (2) to connect the duct (1) with the fan outlet, and the other end of which is fixedly connected to an air outlet hopper (3). The protective mechanism includes a base and a protective frame. The protective frame is fixedly connected to the base and is arranged around the outside of the air duct (1) to form external protection for the air duct (1).

2. The ventilation device for tunnel boring machines according to claim 1, characterized in that: The ventilation duct (1) includes multiple sections, which are fixedly connected end to end. Each section is a hollow structure with open ends.

3. A ventilation device for tunnel boring machines according to claim 2, characterized in that: A sound-absorbing and noise-reducing layer is fixedly connected to the inner wall of the air duct (1).

4. A ventilation device for tunnel boring machines according to claim 1, characterized in that: The air outlet hopper (3) has a conical cylindrical structure. The inner diameter of the end of the air outlet hopper (3) connected to the air duct (1) is smaller than the inner diameter of the other end of the air outlet hopper (3).

5. A ventilation device for tunnel boring machines according to claim 1, characterized in that: The base includes two parallel main beams (4), and a plurality of reinforcing beams (5) are provided between the two main beams (4). Both ends of the reinforcing beams (5) are fixedly connected to the main beams (4).

6. A ventilation device for tunnel boring machines according to claim 5, characterized in that: Support blocks (6) are symmetrically fixedly connected to both sides of the lower edge of the air outlet hopper (3), and the support blocks (6) are fixedly connected to the adjacent reinforcing beam (5).

7. A ventilation device for tunnel boring machines according to claim 5, characterized in that: The main beam (4) is a U-shaped channel steel structure. Multiple reinforcing ribs (7) are fixedly connected in the U-shaped channel of the main beam (4). A hook seat (8) corresponding to the reinforcing rib (7) is fixedly connected to the top wall of the main beam (4). A lifting hole for the lifting hook (9) to pass through is provided on the hook seat (8).

8. A ventilation device for tunnel boring machines according to claim 6, characterized in that: The protective frame includes multiple protective rings (10) and multiple protective rods (11). The multiple protective rings (10) are located between the mounting base (2) and the air outlet (3) and are spaced apart along the axial direction of the air duct (1). The multiple protective rings (10) are fixedly connected to each other by the multiple protective rods (11).

9. A ventilation device for a tunnel boring machine according to claim 8, characterized in that: The mounting base (2) and the adjacent reinforcing beam (5) and the protective ring (10) and the adjacent reinforcing beam (5) are fixedly connected by a support plate (12).

10. A ventilation device for a tunnel boring machine according to any one of claims 1-9, characterized in that: The ventilation device is configured for bidirectional ventilation mode. By controlling the running direction of the shield machine fan, the gas at the front of the shield machine is drawn out to the rear of the tunnel through the air duct (1), or the air at the rear of the tunnel is transported to the front of the shield machine through the air duct (1).

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