Ventilation device for rail transit tunnel construction

Abstract

The utility model belongs to the technical field of tunnel construction, and discloses a ventilation device for rail transit tunnel construction, which comprises a first ventilation pipe, a sealing ring is fixedly arranged outside one side of the first ventilation pipe, and a second ventilation pipe is fixedly arranged inside the other side of the sealing ring. A reinforcing ring is fixedly arranged on the outer side of the second ventilation pipe and fixedly connected with the first ventilation pipe, a bandage is arranged on the outer side of the reinforcing ring in an attached mode, a mounting block is fixedly arranged on one side of the bandage, the other side of the bandage penetrates through the bandage, and a hand wheel is rotationally arranged in the mounting block. According to the ventilation device, the sealing performance of a ventilation pipeline and the subsequent harmful gas discharging work can be guaranteed, the ventilation task can be completed within the specified time, and the safety of workers and the progress of a project are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, in particular to a ventilation device for rail transit tunnel construction. Background Art

[0002] Tunnel ventilators are mainly used to discharge harmful gases released from the ground during tunnel construction due to the explosion of explosives, the use of internal combustion engines, and excavation. They are important conditions for providing a good construction environment for tunnel construction, maintaining the health of workers, ensuring normal and smooth construction, improving work efficiency, and ensuring project quality. The selection of ventilation pipes for tunnel ventilators must fully consider various factors such as the air volume and wind speed in the tunnel, the durability of the ventilation pipes, and the cost. At the same time, due to the long length of the tunnel, the ventilation ducts generally require multiple pipes to be spliced. However, the sealing degree of the splicing affects the quality of ventilation. If leakage occurs at the splicing, the ventilation effect will be greatly reduced.

[0003] At the same time, the patent specification with announcement number CN 219840682 U discloses a ventilation device for tunnel construction, including a mounting plate, with telescopic rods installed at the four corners of the top surface of the mounting plate, and two rows of connecting pipe groups distributed front and back installed on the top surface of the mounting plate. Each group of the connecting pipe groups includes several evenly distributed first connecting pipes, each of which is installed with a control valve, and an air suction hood is installed at the bottom end of each of the first connecting pipes.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned ventilation device for tunnel construction has the following problems: although the utility model has a certain effect in ventilation and exhaust, since most of the ventilation pipes in the tunnel are spliced together by several pipes, and the device does not carefully explain whether the sealing effect of the pipe joints is good, if a leak occurs at the joints, the harmful gases in the tunnel cannot be discharged within the predetermined time, and if the staff enters it at this time, serious consequences will occur.

[0005] Therefore, in order to solve the above problems, a ventilation device for rail transit tunnel construction is proposed. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a ventilation device for rail transit tunnel construction, which has the advantage of good sealing. The utility model fixes the joints of the ventilation ducts to ensure the sealing of the ventilation ducts, and can subsequently effectively discharge harmful gases in the tunnel, thereby completing the ventilation task within the specified time, while ensuring the safety of workers entering the tunnel construction and the progress of the project.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ventilation device for rail transit tunnel construction, comprising a first ventilation pipe, a sealing ring fixedly provided on the outside of one side of the first ventilation pipe, a second ventilation pipe fixedly provided on the inside of the other side of the sealing ring, a reinforcement ring fixedly provided on the outside of the second ventilation pipe, and the reinforcement ring is fixedly connected to the first ventilation pipe, a bandage is fitted on the outside of the reinforcement ring, a mounting block is fixedly provided on one side of the bandage, the other side of the bandage passes through the bandage, a handwheel is rotatably provided inside the mounting block, a main gear is fixedly provided on the other side of the handwheel, the outer teeth of the main gear are connected to the sub-gear, and the sub-gear rotates inside the mounting block, a lower gear is fixedly provided on the other side of the sub-gear, the outer teeth of the lower gear are connected to the fixed teeth, and the fixed teeth are fixedly connected to the bandage.

[0008] Preferably, a rotating shaft is rotatably provided inside the mounting block, and a square shaft is fixedly provided on one side of the rotating shaft.

[0009] Preferably, a limiting sleeve is rotatably provided on the other side of the rotating shaft, the limiting sleeve is in contact with the main gear, and a torsion spring is provided inside the limiting sleeve.

[0010] Preferably, a fixing block is embedded in the interior of the installation block, and the square shaft passes through the fixing block.

[0011] Preferably, a first bracket is fixedly provided on the bottom surface of the first ventilation duct, and a second bracket is fixedly provided on the bottom surface of the second ventilation duct.

[0012] Preferably, a first fan is fixedly provided at one end of the first ventilation duct, and a second fan is fixedly provided at the other end of the second ventilation duct.

[0013] Preferably, a foldable hose is fixedly provided at the other end of the second ventilation pipe, a lifting platform is fixedly provided on the bottom surface of the foldable hose, and moving wheels are fixedly provided on the bottom surface of the lifting platform.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model increases the sealing performance by arranging a sealing ring between the first ventilation duct and the second ventilation duct, and at the same time adds a reinforcement ring for reinforcement, and then drives the main gear, the sub-gear and the lower gear to rotate by rotating the hand wheel, and the mounting block simultaneously pulls the bandage to tighten the reinforcement ring, thereby increasing the overall sealing performance. The utility model fixes the joints of the ventilation ducts to ensure the sealing performance of the ventilation ducts, and can subsequently effectively discharge harmful gases in the tunnel, thereby completing the ventilation task within the specified time, and at the same time ensuring the safety of workers entering the tunnel for construction and the progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a ventilation device for rail transit tunnel construction proposed by the present invention;

[0017] Figure 2 This is a schematic diagram of the second fan installation structure proposed by the present utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the installation block proposed in the utility model;

[0019] Figure 4 This is a schematic diagram of the sealing ring installation structure proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the installation block proposed in the utility model.

[0021] In the figure: 1. first bracket; 2. first fan; 3. first ventilation duct; 4. second ventilation duct; 5. second bracket; 6. folding hose; 7. lifting platform; 8. moving wheel; 9. second fan; 10. sealing ring; 11. reinforcement ring; 12. bandage; 13. mounting block; 14. hand wheel; 15. main gear; 16. secondary gear; 17. lower gear; 18. fixed gear; 19. limiting sleeve; 20. rotating shaft; 21. square shaft; 22. fixing block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5As shown, the utility model provides a ventilation device for rail transit tunnel construction, including a first ventilation pipe 3, a sealing ring 10 is fixedly provided on the outside of one side of the first ventilation pipe 3, a second ventilation pipe 4 is fixedly provided on the inside of the other side of the sealing ring 10, a reinforcement ring 11 is fixedly provided on the outside of the second ventilation pipe 4, and the reinforcement ring 11 is fixedly connected to the first ventilation pipe 3, a bandage 12 is fitted on the outside of the reinforcement ring 11, a mounting block 13 is fixedly provided on one side of the bandage 12, the other side of the bandage 12 passes through the bandage 12, a hand wheel 14 is rotatably provided inside the mounting block 13, a main gear 15 is fixedly provided on the other side of the hand wheel 14, and the outer teeth of the main gear 15 are meshingly connected to the auxiliary gear 15. Gear 16, and the sub-gear 16 rotates inside the mounting block 13, and a lower gear 17 is fixedly provided on the other side of the sub-gear 16, and the outer meshing teeth of the lower gear 17 are connected with a fixed tooth 18, and the fixed tooth 18 is fixedly connected to the bandage 12, and the first ventilation pipe 3 and the second ventilation pipe 4 are sealed by the sealing ring 10, and then reinforced by the reinforcement ring 11, and then the final tightening action is performed by the bandage 12, so as to ensure the sealing of the first ventilation pipe 3 and the second ventilation pipe 4, so that the harmful gas discharged from the tunnel can be effectively discharged, and the ventilation task can be completed within the specified time, ensuring the safety of the workers when entering the tunnel construction and the progress of the project.

[0024] Specifically, a rotating shaft 20 is rotatably provided inside the mounting block 13 , and a square shaft 21 is fixedly provided on one side of the rotating shaft 20 . The square shaft 21 can be freely rotated through the square shaft 21 , and the square shaft 21 is configured to be square in shape for easier operation.

[0025] Furthermore, a limit sleeve 19 is provided on the other side of the rotating shaft 20. The limit sleeve 19 is fitted with the main gear 15, and a torsion spring is provided inside the limit sleeve 19. When the limit sleeve 19 rotates outside the square shaft 21, it can only rotate in one direction. A limit is provided in the other direction for limiting the position, and the torsion spring helps the limit sleeve 19 to reset after rotation.

[0026] Furthermore, a fixing block 22 is embedded in the interior of the mounting block 13, and the square shaft 21 passes through the fixing block 22. When the rotating shaft 20 is not desired to rotate, the fixing block 22 is used to limit it to ensure its stability.

[0027] It is worth noting that a first bracket 1 is fixedly provided on the bottom surface of the first ventilation pipe 3, and a second bracket 5 is fixedly provided on the bottom surface of the second ventilation pipe 4. Since the length of the pipe is too long, multiple support frames are required for support.

[0028] It is worth noting that a first fan 2 is fixedly provided at one end of the first ventilation duct 3, and a second fan 9 is fixedly provided at the other end of the second ventilation duct 4. Since the ventilation project is large, multiple fans need to work simultaneously.

[0029] It is worth mentioning that a foldable hose 6 is fixedly provided at the other end of the second ventilation pipe 4, a lifting platform 7 is fixedly provided on the bottom surface of the foldable hose 6, and a moving wheel 8 is fixedly provided on the bottom surface of the lifting platform 7. The foldable hose 6 is driven to move freely by the moving wheel 8 and the lifting platform 7, so as to more accurately discharge harmful gases in the corners of the tunnel.

[0030] Among them, the first fan 2 and the second fan 9 are prior art and will not be described in detail. At the same time, the present invention also includes a power supply, a controller and a switch, which are not the main technical points of the present patent and will not be described in detail. The "front, back, left and right" perspectives of the present device are as follows: Figure 1 The direction shown in the figure is the reference.

[0031] Working principle and process:

[0032] Before using a ventilation device for rail transit tunnel construction, first, the first bracket 1 and the second bracket 5 and the first ventilation pipe 3 and the second ventilation pipe 4 are connected and fixed, and then a sealing ring 10 is provided inside the connection between the first ventilation pipe 3 and the second ventilation pipe 4. The sealing ring 10 is made of soft rubber material and has a great sealing effect. Then, a reinforcement ring 11 is put on the outside of the first ventilation pipe 3 and the second ventilation pipe 4 for reinforcement. Then, the hand wheel 14 is turned, and the hand wheel 14 drives the main gear 15. The main gear 15 drives the sub-gear 16 and the lower gear 17 to rotate. When the lower gear 17 rotates, it will come into contact with the fixed tooth 18, thereby driving the mounting block 13 and one end of the bandage 12 to move. Since the bandage 12 is in contact with the reinforcement ring 11, when the mounting block 13 drives one end of the bandage 12 to move, the bandage 12 will wrap around the reinforcement ring 11, and the main gear 15 will toggle the limit sleeve 19 when it rotates. Then, when the main gear 1 When the bandage 12 is to be loosened, the fixing block 22 is pulled out and the rotating shaft 20 is driven to rotate by the square shaft 21. At this time, the limiting direction of the limiting sleeve 19 is also changed, and the bandage 12 can be loosened. At the same time, a first fan 2 is provided at the top of the first ventilation pipe 3, and a second fan 9 is provided at one end of the second ventilation pipe 4. Since the pipe is too long, multiple fans are required to carry out ventilation work. At the same time, the foldable hose 6 is driven to move freely by the moving wheel 8 and the lifting platform 7, so as to more accurately discharge the harmful gas in the corner of the tunnel. The utility model fixes the joints of the ventilation pipes to ensure the sealing of the ventilation pipes, and can effectively discharge the harmful gas in the tunnel later, so as to complete the ventilation task within the specified time, while ensuring the safety of the workers when entering the tunnel construction and the progress of the project.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for rail transit tunnel construction, comprising a first ventilation pipe (3), characterized in that: A sealing ring (10) is fixedly provided on the outside of one side of the first ventilation tube (3), a second ventilation tube (4) is fixedly provided on the inside of the other side of the sealing ring (10), a reinforcement ring (11) is fixedly provided on the outside of the second ventilation tube (4), and the reinforcement ring (11) is fixedly connected to the first ventilation tube (3), a bandage (12) is fitted on the outside of the reinforcement ring (11), a mounting block (13) is fixedly provided on one side of the bandage (12), and the other side of the bandage (12) passes through the bandage ( 12), a hand wheel (14) is provided for rotation inside the mounting block (13), a main gear (15) is fixedly provided on the other side of the hand wheel (14), the outer teeth of the main gear (15) are connected to the sub-gear (16), and the sub-gear (16) rotates inside the mounting block (13), a lower gear (17) is fixedly provided on the other side of the sub-gear (16), the outer teeth of the lower gear (17) are connected to the fixed teeth (18), and the fixed teeth (18) are fixedly connected to the bandage (12).

2. A ventilation device for rail transit tunnel construction according to claim 1, characterized in that: A rotating shaft (20) is rotatably provided inside the installation block (13), and a square shaft (21) is fixedly provided on one side of the rotating shaft (20).

3. A ventilation device for rail transit tunnel construction according to claim 2, characterized in that: A limiting sleeve (19) is rotatably provided on the other side of the rotating shaft (20), the limiting sleeve (19) is fitted with the main gear (15), and a torsion spring is provided inside the limiting sleeve (19).

4. A ventilation device for rail transit tunnel construction according to claim 1, characterized in that: A fixing block (22) is embedded in the interior of the installation block (13), and the square shaft (21) passes through the fixing block (22).

5. The ventilation device for rail transit tunnel construction according to claim 1, characterized in that: A first bracket (1) is fixedly provided on the bottom surface of the first ventilation pipe (3), and a second bracket (5) is fixedly provided on the bottom surface of the second ventilation pipe (4).

6. A ventilation device for rail transit tunnel construction according to claim 1, characterized in that: A first fan (2) is fixedly provided at one end of the first ventilation pipe (3), and a second fan (9) is fixedly provided at the other end of the second ventilation pipe (4).

7. The ventilation device for rail transit tunnel construction according to claim 1, characterized in that: A folding hose (6) is fixedly provided at the other end of the second ventilation pipe (4), a lifting platform (7) is fixedly provided on the bottom surface of the folding hose (6), and a moving wheel (8) is fixedly provided on the bottom surface of the lifting platform (7).

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