A ventilation device for long tunnel construction

Abstract

This utility model discloses a ventilation device for long tunnel construction, including a fan, a fixing rope, and a ventilation duct cloth. One end of the ventilation duct cloth is connected to the air outlet of the fan, and the other end of the ventilation duct cloth extends into the tunnel and is detachably connected to multiple ventilation duct cloths in sequence, extending along the tunnel to the working face. The ventilation duct cloth is fixed to the tunnel wall by the fixing rope. The other end of the ventilation duct cloth is detachably fixed to an auxiliary ventilation duct, which is also fixed to the tunnel wall by the fixing rope. The side wall of the air outlet of the auxiliary ventilation duct is provided with at least two through holes, and an adjusting rope is inserted into the through holes. This application adjusts the size of the air outlet of the auxiliary ventilation duct by adjusting the rope, thereby adjusting the distance of air discharge from the air outlet, which facilitates the air flow in the working face area. In addition, a side ventilation duct can also be installed on the auxiliary ventilation duct. The side ventilation duct can be fixed outside the cab of the construction machinery to blow away dust in the construction area, which is convenient for construction.

Description

Technical Field

[0001] This utility model relates to the field of reservoir construction technology, and in particular to a ventilation device for long tunnel construction. Background Technology

[0002] During the construction of long tunnels, ventilation facilities need to be installed inside the tunnel. Currently, a combination of blowers and ventilation ducts is generally used to force air into the tunnel face. The blower is located outside the tunnel, and one end of the ventilation duct is connected to the blower's outlet. The other end of the ventilation duct extends into the tunnel and is detachably connected to multiple ventilation ducts in sequence, extending along the tunnel to the tunnel face. The ventilation ducts are fixed to the tunnel wall with ropes. Ultimately, fresh air from outside the tunnel is forced into the tunnel for cooling and ventilation. To ensure construction, the outlet of the ventilation duct cannot be too close to the tunnel face, resulting in slow airflow in the tunnel face area. Therefore, dust generated during construction will disperse in the tunnel face area, creating a harsh construction environment. Although the construction workers are in the sealed cab of the construction machinery, dust still obstructs their vision and affects the construction. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a ventilation device for long tunnel construction. Existing ventilation devices suffer from slow airflow and dust accumulation at the tunnel face, resulting in a harsh construction environment that hinders construction.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a ventilation device for long tunnel construction, comprising a fan, a fixing rope, and a ventilation duct cloth. One end of the ventilation duct cloth is connected to the air outlet of the fan, and the other end of the ventilation duct cloth extends into the tunnel and is detachably connected to multiple ventilation duct cloths in sequence, extending along the tunnel to the tunnel face. The ventilation duct cloth is fixed to the tunnel wall by the fixing rope. The feature is that the other end of the ventilation duct cloth is detachably and fixedly connected to an auxiliary ventilation duct, which is also fixed to the tunnel wall by the fixing rope. The side wall of the air outlet of the auxiliary ventilation duct is provided with at least two through holes, and an adjusting pull rope is inserted into the through holes.

[0005] Furthermore, a side air duct is provided on the side wall of the auxiliary air duct, and the angle between the axis of the side air duct and the axis of the auxiliary air duct is an acute angle.

[0006] Furthermore, the fixing rope is provided on the side ventilation duct.

[0007] Furthermore, there are multiple side ducts, which are detachably connected to the auxiliary duct.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. This application adds an auxiliary air duct to the existing ventilation device formed by the air duct cloth and fan. The size of the air outlet of the auxiliary air duct can be adjusted by adjusting the operation of the pull rope, thereby adjusting the distance of the air discharged from the air outlet, which facilitates the air flow in the working face area. In addition, a side air duct can also be installed on the auxiliary air duct. The side air duct can be fixed outside the cab of the construction machinery to blow away the dust in the construction area, which facilitates construction.

[0010] 2. In this application, the angle between the axis of the bypass ventilation duct and the axis of the auxiliary ventilation duct is an acute angle, which facilitates the entry of high-pressure air from the auxiliary ventilation duct into the bypass ventilation duct. At the same time, there can be multiple bypass ventilation ducts, which can be installed on multiple construction machines by fixing ropes; they can even be fixed to the tunnel wall at the nearest point to the working face by fixing ropes.

[0011] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only three of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 A magnified view of A in the middle.

[0015] Figure 3 This is a schematic diagram of the side ventilation duct and auxiliary ventilation duct.

[0016] In the diagram, 1-fan, 2-fixing rope, 3-air duct cloth, 4-auxiliary air duct, 5-through hole, 6-adjusting rope, 7-side air duct. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information. Example 1

[0020] like Figure 1-3 As shown, a ventilation device for long tunnel construction includes a fan 1, a fixing rope 2, and a ventilation duct cloth 3. One end of the ventilation duct cloth 3 is connected to the air outlet of the fan 1, and the other end of the ventilation duct cloth 3 extends into the tunnel and is detachably connected to multiple ventilation duct cloths 3 in sequence, extending along the tunnel to the tunnel face. The ventilation duct cloth 3 is fixed to the tunnel wall by the fixing rope 2. The other end of the ventilation duct cloth 3 is detachably and fixedly connected to an auxiliary ventilation duct 4, which is also fixed to the tunnel wall by the fixing rope 2. At least two through holes 5 are provided on the circumference of the side wall of the air outlet of the auxiliary ventilation duct 4, and an adjusting rope 6 is inserted into the through hole 5. By adjusting the rope 6, the size of the air outlet of the auxiliary ventilation duct 4 can be adjusted, thereby adjusting the distance of air discharge from the air outlet, increasing the air velocity at the tunnel face, facilitating air flow in the tunnel face area, dispersing dust in the construction area, and facilitating construction. Example 2

[0021] like Figure 3 As shown, this embodiment is obtained by adding technical features such as the side ventilation duct 7 on the basis of embodiment one. The other technical features are the same as those in embodiment one, and the similarities will not be repeated here. The difference between this embodiment and embodiment one is that: a side ventilation duct 7 is provided on the side wall of the auxiliary ventilation duct 4, and the angle between the axis of the side ventilation duct 7 and the axis of the auxiliary ventilation duct 4 is an acute angle; a fixing rope 2 is provided on the side ventilation duct 7; there are multiple side ventilation ducts 7 and they are detachably connected to the auxiliary ventilation duct.

[0022] In this embodiment, the diameter of the auxiliary air duct 4 matches the diameter of the air duct cloth 3. The length of the auxiliary air duct 4 can be adjusted according to actual conditions, such as 2-5m, but shorter than the length of a single section of the air duct cloth. The diameter of the side air duct 7 can be 1 / 10-1 / 6 of the diameter of the auxiliary air duct 4 to avoid excessive side air ducts affecting the air discharged from the auxiliary air duct 4, while ensuring the air volume of the side air duct. The side air duct 7 can be detachably connected to the auxiliary air duct 4, facilitating the disassembly and replacement of side air ducts 7 of different lengths. The connection method is the same as the connection method between the air duct cloth 3. At the same time, the side air duct 7 is connected to the auxiliary air duct 4, and the side air duct 7 is not used. When necessary, the side ventilation duct 7 can be tied tightly with ropes to prevent air from the auxiliary ventilation duct 4 from being discharged from the side ventilation duct 7. The axis of the side ventilation duct 7 and the axis of the auxiliary ventilation duct 4 form an acute angle, which facilitates the entry of high-pressure air from the auxiliary ventilation duct 4 into the side ventilation duct 7. At the same time, there can be multiple side ventilation ducts 7, which can be set on multiple construction machines by fixing ropes 2. They can even be fixed to the tunnel wall closest to the working face by fixing ropes 2. Moreover, the auxiliary ventilation duct 4 can also be equipped with a side ventilation duct 7, which can be fixed to the outside of the cab of the construction machine to blow away the dust in the cab area and increase the driver's visibility.

[0023] The usage process of the technical solution formed by the above embodiments is as follows: the ventilation duct cloth 3 and the fan 1 are laid in the existing way, which will not be repeated in this application. Then, the auxiliary ventilation duct 4 is connected to the end of the ventilation duct cloth 3 (the connection method is the same as the connection method between ventilation duct cloths 3 in the prior art). According to the dust situation at the working face, the size of the air outlet of the auxiliary ventilation duct 4 is adjusted by adjusting the pull rope 6 (the two ends of the adjustment pull rope 6 are exposed, and the air outlet of the auxiliary ventilation duct 4 is adjusted by tying the two ends), which increases the air flow velocity at the working face, thereby adjusting the distance of the air discharged from the air outlet. At the same time, when a side ventilation duct 7 is set on the auxiliary ventilation duct 4, the side ventilation duct 7 can be fixed to the construction machinery cab or closer to the working face by fixing rope 2 (the connection of fixing rope 2 on the side ventilation duct 7 is the same as the connection method of fixing rope 2 on the ventilation duct 3), which increases the air flow in the local area and improves the personnel's visibility.

[0024] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A ventilation device for long tunnel construction, comprising a fan, a fixing rope, and a ventilation duct cloth, one end of which is connected to the air outlet of the fan, and the other end of which extends into the tunnel and is detachably connected to multiple ventilation duct cloths in sequence, extending along the tunnel to the tunnel face; the ventilation duct cloth is fixed to the tunnel wall by the fixing rope, characterized in that: The other end of the ventilation duct is detachably and fixedly connected to an auxiliary ventilation duct, which is also fixed to the tunnel wall by the fixing rope. The side wall of the air outlet of the auxiliary ventilation duct has at least two through holes, and an adjustment rope is inserted into the through holes.

2. The ventilation device for long tunnel construction according to claim 1, characterized in that: A side air duct is provided on the side wall of the auxiliary air duct, and the angle between the axis of the side air duct and the axis of the auxiliary air duct is an acute angle.

3. A ventilation device for long tunnel construction according to claim 2, characterized in that: The fixing rope is installed on the side ventilation duct.

4. A ventilation device for long tunnel construction according to claim 3, characterized in that: The bypass duct is multiple and can be detachably connected to the auxiliary duct.

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