A tunnel ventilation fan for tunnel construction

Abstract

This utility model provides a tunnel ventilation fan for tunnel construction, including a movable base frame. A fan is detachably and fixedly mounted on the upper part of the movable base frame. Silencers are flanged at both ends of the fan and are detachably and fixedly mounted to the movable base frame. A housing is embedded and fixedly mounted within the movable base frame. A rotating duct assembly is fitted into the housing. The rotating duct assembly includes a rotating pipe, with a flexible hose connected to one end of the rotating pipe via a flange. A rotating shaft is fixedly mounted at the lower end of the rotating pipe. The arrangement of the rotating pipe, flexible hose, rotating shaft, driven gear, driving gear, motor, encoder, and encoder mounting bracket in this utility model facilitates adjustment of the air inlet direction, allowing the air inlet to be aligned with the construction location, thereby expelling dust generated during construction, making it more suitable for tunnel construction.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and in particular relates to a tunnel ventilation fan used in tunnel construction. Background Technology

[0002] Currently, tunnel ventilation fans are typically installed in tunnels during construction to ventilate the tunnel environment. Existing tunnel ventilation fans are usually tunnel jet fans, which include jet fans with pipe silencers fixed at both ends. A metal mesh is also installed inside one end of the silencer. However, after installation, the direction of the air inlet and outlet of this type of tunnel fan is fixed. When tunnel construction is underway, it is not convenient to align the air inlet with areas where dust is generated during construction. Therefore, although it can ventilate the tunnel, its compatibility with tunnel construction is low. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a tunnel ventilation fan for tunnel construction, which can adjust the direction of the air inlet of the tunnel ventilation fan so that the air inlet can be aligned with the construction location, thereby expelling the dust generated during the construction process, and is more suitable for tunnel construction.

[0004] This utility model is achieved through the following technical solution:

[0005] A tunnel ventilation fan for tunnel construction includes a mobile base frame. A fan is detachably and fixedly mounted on the upper part of the mobile base frame. Silencers are installed at both ends of the fan via flanges. The silencers are detachably and fixedly mounted to the mobile base frame. A housing is embedded and fixedly mounted inside the mobile base frame. A rotating duct assembly is fitted into the housing. The rotating duct assembly includes a rotating pipe. A flexible hose is connected to one end of the rotating pipe via a flange. A rotating shaft is fixedly mounted at the lower end of the rotating pipe. A driven gear and an encoder are fixedly mounted at the upper and lower ends of the rotating shaft, respectively. A driving gear is meshed with one side of the driven gear. A motor is driven and mounted on the lower part of the driving gear. An encoder mounting bracket is fixedly mounted on one side of the encoder.

[0006] Preferably, a metal mesh plate is detachably and fixedly installed inside the outer end of each of the silencers.

[0007] Preferably, both the encoder mounting bracket and the motor are fixedly installed inside the chassis.

[0008] Preferably, the lower end bearing of the rotating shaft is installed inside the housing.

[0009] Preferably, the upper end of the rotating shaft passes through the chassis and is installed with the chassis via a sealed bearing.

[0010] Preferably, the flexible hose flange is connected to the end of one of the silencers furthest from the fan.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, the arrangement of the rotating tube, flexible tube, rotating shaft, driven gear, driving gear, motor, encoder, and encoder mounting bracket is beneficial for adjusting the direction of the air inlet, so that the air inlet can be aligned with the construction location, thereby expelling the dust generated during the construction process, which is more suitable for tunnel construction.

[0013] 2. In this utility model, the fan, silencer, and metal mesh plate are provided to ventilate the tunnel environment during construction.

[0014] 3. In this utility model, the enclosure design helps to protect the rotating duct assembly and reduce the impact of dust on the rotating duct assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the rotating duct assembly of this utility model.

[0017] In the picture:

[0018] 1. Mobile base frame; 2. Fan; 3. Silencer; 4. Metal mesh plate; 5. Chassis; 6. Rotary duct assembly; 61. Rotary tube; 62. Flexible hose; 63. Shaft; 64. Driven gear; 65. Driven gear; 66. Motor; 67. Encoder; 68. Encoder mounting bracket. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings, as shown below. Figure 1 As shown, a tunnel ventilation fan for tunnel construction includes a movable base frame 1. A fan 2 is detachably and fixedly installed on the upper part of the movable base frame 1. The fan 2 is a jet fan. Silencers 3 are installed on flanges at both ends of the fan 2. The silencers 3 are silencers for tunnel ventilation fans. The silencers 3 are detachably and fixedly installed with the movable base frame 1. A housing 5 is embedded and fixedly installed inside the movable base frame 1. A rotating air duct assembly 6 is provided in cooperation with the housing 5.

[0020] In this implementation plan, in conjunction with the appendix Figure 2As shown, the rotating duct assembly 6 includes a rotating tube 61. One end of the rotating tube 61 is flanged and connected to a flexible hose 62. The flexible hose 62 is an accordion-style telescopic rubber hose. A rotating shaft 63 is fixedly installed at the lower end of the rotating tube 61. A driven gear 64 and an encoder 67 are fixedly installed at the upper and lower ends of the rotating shaft 63, respectively. A driving gear 65 is meshed on one side of the driven gear 64. A motor 66 is driven and installed at the lower part of the driving gear 65. An encoder mounting bracket 68 is fixedly installed on one side of the encoder 67. The motor 66 drives the rotating shaft 63 to rotate through the driving gear 65 and the driven gear 64, thereby driving one end of the rotating tube 61 to rotate and adjust the orientation of the air inlet of the rotating tube 61. The encoder 67 is used to detect the rotation angle and number of rotations of the rotating shaft 63 and transmit the data to the power distribution control box. The user can control the rotation angle of the rotating shaft 63 by controlling the rotation of the motor 66 through the power distribution control box. The flexible hose 62 allows one end of the rotating tube 61 to have a certain range of motion relative to the silencer 3, so that the rotating tube 61 can adjust the orientation of the air inlet.

[0021] In this embodiment, specifically, a metal mesh plate 4 can be detachably and fixedly installed inside the outer end of each silencer 3.

[0022] In this embodiment, specifically, the encoder mounting bracket 68 and the motor 66 are both fixedly installed inside the housing 5.

[0023] In this embodiment, specifically, the lower end bearing of the rotating shaft 63 is installed inside the housing 5.

[0024] In this embodiment, specifically, the upper end of the rotating shaft 63 passes through the housing 5 and is installed with the housing 5 via a sealed bearing.

[0025] In this embodiment, specifically, the flexible hose 62 is flanged and connected to the end of one of the silencers 3 that is furthest from the fan 2.

[0026] In this embodiment, specifically, a power distribution control box is also installed inside the mobile base frame 1.

[0027] In this embodiment, specifically, the power distribution control box is electrically connected to the fan 2, the motor 66 and the encoder 67, and the power distribution control box serves to supply power and control the fan 2, the motor 66 and the encoder 67.

[0028] Working principle

[0029] In this invention, the tunnel fan is moved to the vicinity of the tunnel construction site, and one end of the air outlet is connected to the tunnel exhaust network through an external pipeline. The position of the rotating pipe 61 can be adjusted by rotating the air duct assembly 6 so that the air inlet of the rotating pipe 61 can be aligned with the construction location, thereby expelling the dust generated during the construction process. This is more suitable for tunnel construction. The fan 2 draws air out of the tunnel to provide ventilation. The silencer 3 is used to reduce the noise generated by the fan 2 during operation. The metal mesh plate 4 prevents large objects from entering the silencer 3.

[0030] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A tunnel fan for tunnel construction, characterized in that, The tunnel fan for tunnel construction includes a mobile chassis (1). A fan (2) is detachably and fixedly installed on the upper part of the mobile chassis (1). Silencers (3) are flange-mounted at both ends of the fan (2). The silencers (3) are detachably and fixedly installed on the mobile chassis (1). A chassis (5) is fixedly installed inside the mobile chassis (1). The chassis (5) is cooperatively provided with a rotary air duct assembly (6). The rotary air duct assembly (6) includes a rotary pipe (61). One end of the rotary pipe (61) is flange-connected to a hose (62). A rotary shaft (63) is fixedly installed at the lower end of the rotary pipe (61). A driven gear (64) and an encoder (67) are respectively fixedly installed at the upper and lower ends of the rotary shaft (63). A driving gear (65) is meshingly installed on one side of the driven gear (64). A motor (66) is transmission-installed at the lower part of the driving gear (65). An encoder mounting bracket (68) is fixedly installed on one side of the encoder (67).

2. The tunnel fan for tunnel construction according to claim 1, characterized in that, A wire mesh panel (4) is detachably and fixedly installed inside the outer end of each silencer (3).

3. The tunnel fan for tunnel construction according to claim 1, wherein, The encoder mounting bracket (68) and the motor (66) are both fixedly installed inside the chassis (5).

4. The tunnel fan for tunnel construction according to claim 1, wherein The lower end of the rotary shaft (63) is installed by a bearing inside the chassis (5).

5. The tunnel fan for tunnel construction according to claim 1, characterized in that, The upper end of the rotary shaft (63) penetrates through the chassis (5) and is installed by a sealed bearing with the chassis (5).

6. The tunnel fan for tunnel construction according to claim 1, characterized in that, The hose (62) is flange-connected to one end of one of the silencers (3) far away from the fan (2).

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