Ventilation duct for tunnel construction

Abstract

The utility model provides a kind of ventilation duct for tunnel construction, it is related to ventilation duct technical field, including pipeline body;The left and right sides of the pipeline body are provided with erecting bearing cylinder, semicircular head plate with front and rear through holes is set in the middle of the outer circumference of erecting bearing cylinder upper and lower, the outer circumference of the left and right sides of erecting bearing cylinder is all provided with assembly ring groove, the outer end of the assembly ring groove of erecting bearing cylinder is all provided with threaded blind hole upper and lower, the outer circumference of the left and right ends of erecting bearing cylinder is all provided with sealing ring groove, rubber sealing ring is embedded in the sealing ring groove of erecting bearing cylinder, it is convenient to erect support frame to insert the semicircular head plate inside erecting bearing cylinder, and erecting fixing erecting bearing cylinder in construction tunnel inside by erecting support frame, solve the problem that the surface of pipeline does not have any erecting structure, leading to the erecting process of pipeline is more difficult, it is inconvenient to set up erecting structure on the surface of pipeline, so that pipeline can be erected quickly.

Description

Technical Field

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

[0002] Ventilation ducts for tunnel construction are core facilities that improve the underground working environment through mechanical or natural means. They are mainly used to transport fresh air and exhaust polluted gases, ensuring construction safety and efficiency. They need to be dynamically designed in combination with geological conditions, tunneling methods and pollution source characteristics, and must take into account corrosion resistance, vibration resistance and fire resistance. They are a core component of modern tunnel construction.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing ventilation ducts used in tunnel construction: 1. The pipeline surface has no supporting structure, which makes the pipeline installation process difficult and inconvenient to install supporting structures on the pipeline surface to enable the pipeline to be installed quickly. 2. The pipes are fixed together by bolts, which makes the disassembly and assembly process more complicated. It is not convenient to add connecting measures at the ends of the pipes so that they can be quickly connected and assembled. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a ventilation duct for tunnel construction. This addresses the issues of existing ducts lacking any supporting structure on their surface, making the duct installation process difficult and inconvenient to install supporting structures on the duct surface for rapid installation; and the ducts being fixed together with bolts, resulting in cumbersome disassembly and assembly processes, making it inconvenient to add connecting measures at the duct ends for quick assembly.

[0005] The purpose and effectiveness of this utility model for tunnel construction ventilation duct are achieved through the following specific technical means: A ventilation duct for tunnel construction includes a duct body; a support bearing cylinder is provided on both the left and right sides of the duct body, and a semi-circular head plate with front and rear through holes is provided at the top and bottom of the outer circumference of the support bearing cylinder. Assembly ring grooves are opened on the outer circumference of both the left and right sides of the support bearing cylinder, and threaded blind holes are opened at the top and bottom of the outer end of the assembly ring groove of the support bearing cylinder. Sealing ring grooves are opened on the outer circumference of both the left and right ends of the support bearing cylinder, and rubber sealing rings are embedded in the sealing ring grooves of the support bearing cylinder.

[0006] Furthermore, a support frame is inserted from back to front behind the semi-circular head plate of the support cylinder. The support frame has an overall H-shaped structure. Support rods in the front and back directions are provided at both the top and bottom of the support frame. A connecting plate is provided between the support rods of the support frame. A conical head is provided at the rear end of the support rod of the support frame. The outer circumference of the front end of the support rod of the support frame is threaded. A locking nut is installed on the outer circumference of the front end of the support rod of the support frame through the thread.

[0007] Furthermore, the assembly ring groove of the support cylinder is fitted with a mating tension spring, and the surface of the mating tension spring is provided with a corrosion-resistant layer.

[0008] Furthermore, a fixed anti-detachment column is installed inside the threaded blind hole of the support cylinder. The fixed anti-detachment column has threads on its outer circumference, a regular hexagonal groove on its outer end face, and a frosted surface on its inner end face.

[0009] Furthermore, both ends of the support cylinder are fitted with anti-detachment sleeves on their outer circumferences. The upper and lower walls of the inner end of the anti-detachment sleeves are provided with strip-shaped holes that run vertically through the left and right directions. Pull rods in the vertical direction are provided on the outer side of the outer circumference of the anti-detachment sleeves.

[0010] Furthermore, a tunnel ventilation pipe is tightly fitted between the docking anti-detachment cylinders, and a limiting ring plate is provided on the outer circumference of both ends of the tunnel ventilation pipe. An annular sealing gasket is fitted on the outer circumference of the limiting ring plate of the tunnel ventilation pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The method facilitates the insertion of the support frame into the semi-circular head plate of the support cylinder, thereby fixing the support cylinder inside the construction tunnel. This solves the problem that the pipeline is difficult to install due to the lack of any support structure on the pipeline surface, making it inconvenient to set up support structures on the pipeline surface for rapid installation.

[0012] The convenient anti-detachment cylinder is fixed on the support cylinder by a fixed anti-detachment column. The two anti-detachment cylinders are pressed against the tunnel ventilation pipe by the force of the joint tightening spring, so that they can be quickly connected. This solves the problem that the pipe is fixed by bolts, which makes the disassembly and assembly process of the pipe more complicated and inconvenient to add joint measures at the pipe ends so that the pipe can be quickly connected and assembled. Attached Figure Description

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

[0014] Figure 2 This is a disassembled structural diagram of the present invention.

[0015] Figure 3This is an assembly cross-sectional view of the support cylinder and support frame of this utility model.

[0016] Figure 4 This is an assembly cross-sectional view of the support cylinder and the anti-detachment cylinder of this utility model.

[0017] Figure 5 This is an assembly diagram of the support cylinder and the fixed anti-detachment column of this utility model.

[0018] Figure 6 This is a schematic diagram of the assembly of the anti-detachment sleeve and the tunnel ventilation pipe of this utility model.

[0019] In the diagram: 1. Pipe body; 2. Supporting cylinder; 3. Supporting frame; 4. Connecting top tension spring; 5. Fixing anti-detachment column; 6. Connecting anti-detachment cylinder; 7. Tunnel ventilation pipe. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0021] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown: This utility model provides a ventilation duct for tunnel construction, including a duct body 1; support bearing cylinders 2 are provided on both the left and right sides of the duct body 1 to facilitate the support of various components; the support bearing cylinder 2 has a semi-circular head plate with front and rear through holes at the top and bottom of its outer circumference, facilitating the insertion of the front end of the support bearing frame 3 into the interior; assembly ring grooves are provided on the outer circumference of both the left and right sides of the support bearing cylinder 2 to facilitate the connection of the tension spring 4 and the anti-detachment cylinder 6; threaded blind holes are provided at the top and bottom of the outer end of the assembly ring groove of the support bearing cylinder 2 to facilitate the installation of the anti-detachment column 5 by thread; sealing ring grooves are provided on the outer circumference of both the left and right ends of the support bearing cylinder 2 to facilitate the installation of rubber sealing rings; rubber sealing rings are embedded in the sealing ring grooves of the support bearing cylinder 2 to facilitate the sealing between the support bearing cylinder 2 and the anti-detachment cylinder 6; the semi-circular head plate with front and rear through holes at the top and bottom of its outer circumference, facilitating the insertion of the support bearing frame 3 into the interior of the support bearing cylinder 2; the semi-circular head plate with front and rear through holes at the top and bottom of the outer circumference ... A support frame 3 is inserted from back to front behind the round-headed plate, facilitating the insertion of the rear end of the support frame 3 into the tunnel wall to support the support cylinder 2. The support frame 3 has an overall H-shaped structure for easy load bearing. Support rods in the front and rear directions are provided at both the top and bottom of the support frame 3, facilitating insertion into the tunnel wall to bear force and support the support cylinder 2. A connecting plate is provided between the support rods of the support frame 3 to limit the rear of the support cylinder 2. A conical head is provided at the rear end of the support rod of the support frame 3 for easy hammering into the tunnel wall for fixation. The outer circumference of the front end of the support rod of the support frame 3 is threaded to facilitate the installation of a locking nut to prevent the support cylinder 2 from falling off. A locking nut is installed on the outer circumference of the front end of the support rod of the support frame 3 through the thread to lock the support cylinder 2 and prevent it from falling off.

[0022] The mounting ring groove of the support cylinder 2 is fitted with a mating tension spring 4 to facilitate the application of force to the mating anti-detachment cylinder 6. The mating tension spring 4 has a corrosion-resistant layer on its surface to increase its service life. A fixing anti-detachment column 5 is installed inside the threaded blind hole of the support cylinder 2 to facilitate the anti-detachment of the mating anti-detachment cylinder 6. The fixing anti-detachment column 5 has threads on its outer circumference for easy assembly and disassembly via the threads. A regular hexagonal groove is formed on the outer end face of the fixing anti-detachment column 5 to facilitate assembly and disassembly via tools. The inner end face of the fixing anti-detachment column 5 has a frosted surface to increase friction with the support cylinder 2 and prevent loosening. Both ends of the support cylinder 2 are fitted with mating anti-detachment cylinders 6 on their outer circumferences to facilitate the connection of the mating anti-detachment cylinders 6. The anti-detachment cylinder 6 is designed to move left and right. It has vertically extending slots on its inner upper and lower walls, allowing the anti-detachment column 5 to pass through and limit its left and right movement. The outer circumference of the anti-detachment cylinder 6 is equipped with vertically extending pull rods, allowing the anti-detachment cylinder 6 to compress the anti-detachment spring 4 and release its pressure on the tunnel ventilation pipe 7. The tunnel ventilation pipe 7 is tightly secured between the anti-detachment cylinders 6, facilitating air transport. Limiting ring plates are installed on the outer circumference of both ends of the tunnel ventilation pipe 7, facilitating sealing with the annular sealing gasket of the anti-detachment cylinder 6. An annular sealing gasket is fitted around the outer circumference of the limiting ring plate of the tunnel ventilation pipe 7, ensuring a seal between the anti-detachment cylinder 6 and the tunnel ventilation pipe 7.

[0023] The specific usage and function of this embodiment are as follows: In this utility model, such as Figure 1As shown, the pipe body 1 is mounted on the tunnel wall. At this time, the tunnel ventilation pipe 7 is interrupted in the middle to facilitate the display of the structures at both ends of the tunnel ventilation pipe 7. The rear end of the support frame 3 is inside the tunnel wall. To clearly show the structure of the rear end of the support frame 3, the tunnel wall is removed here. When the support frame 3 is installed, the conical head at the rear end of the support frame 3 is driven into the tunnel wall. The driving depth and spacing of the support frame 3 can be adjusted according to the actual situation to form a stable support. The frame with the connecting tension spring 4, the fixed anti-detachment column 5, and the connecting anti-detachment cylinder 6 is then installed. Take out the support cylinder 2 and place it between the front ends of the support rods of the support frame 3, so that the front ends of the support rods of the support frame 3 are inserted into the semi-circular head plate of the support cylinder 2, thereby positioning the support cylinder 2. Install the locking nut on the outer circumference of the front end of the support rod of the support frame 3, and lock the support cylinder 2 onto the support frame 3 to prevent it from falling off. This method solves the problem that the pipeline is difficult to install because there is no support structure on the pipeline surface. Then, hold the pulling rod of the anti-detachment cylinder 6 and pull the anti-detachment cylinder 6 to compress the anti-detachment spring 4, so that the anti-detachment cylinder is properly secured. The spacing between the 6 sections is sufficient for the placement of the tunnel ventilation pipe 7. The tunnel ventilation pipe 7 is then placed between the anti-detachment sleeves 6. The pulling force on the anti-detachment sleeves 6 is released, allowing them to slide towards the tunnel ventilation pipe 7 under the action of the connecting spring 4. This allows the anti-detachment sleeves 6 to fit around the outer circumference of the tunnel ventilation pipe 7's end, pressing the annular sealing gasket against the limiting ring plate of the tunnel ventilation pipe 7 for sealing, thereby reducing air leakage. The anti-detachment sleeves 6 create a clamping force on the tunnel ventilation pipe 7, thus completing the assembly and installation of the pipe body 1. When disassembling the tunnel ventilation pipe 7, the pulling rod of the anti-detachment sleeve 6 is held and pulled to loosen the anti-detachment sleeve. The compression spring 4 of the anti-detachment sleeve 6 causes the anti-detachment sleeve 6 to detach from the outer circumference of the end of the tunnel ventilation pipe 7, releasing the clamping force on the tunnel ventilation pipe 7. Then the tunnel ventilation pipe 7 can be removed. This method solves the problem that the disassembly and assembly process of pipes is relatively cumbersome due to the bolt connection between pipes. In particular, the rubber sealing ring of the support sleeve 2 forms a seal with the inner wall of the anti-detachment sleeve 6, thereby reducing air leakage. At the same time, the fixing anti-detachment column 5 passes through the strip hole of the anti-detachment sleeve 6, which not only restricts the rotation of the anti-detachment sleeve 6 but also allows axial extension and contraction, ensuring that pressure is always maintained under the action of the anti-detachment spring 4.

[0024] Example 2: The difference from Example 1 is that the regular hexagonal groove of the fixed anti-detachment column 5 can also be set as a regular heptagonal groove, so that the fixed anti-detachment column 5 can only be rotated by a special tool that cooperates with the regular heptagonal groove, thus preventing non-workers from rotating and disassembling the fixed anti-detachment column 5.

[0025] Example 3: The difference from Example 1 is that the outer circumferential surface of the pull rod of the anti-detachment cylinder 6 can also be set as a frosted surface, thereby increasing the friction between the outer circumferential surface of the pull rod of the anti-detachment cylinder 6 and the hand, and preventing the slippage of the hand when gripping the outer circumferential surface of the pull rod of the anti-detachment cylinder 6.

Claims

1. A ventilation duct for tunnel construction, characterized in that: The system includes a pipe body (1); the pipe body (1) is provided with a support cylinder (2) on both the left and right sides. The support cylinder (2) is provided with a semi-circular head plate with front and rear through holes in the middle of the outer circumference. The support cylinder (2) is provided with an assembly ring groove on both the left and right sides of the outer circumference. The support cylinder (2) is provided with a threaded blind hole at the outer end of the assembly ring groove. The support cylinder (2) is provided with a sealing ring groove at both the left and right ends of the outer circumference. A rubber sealing ring is embedded in the sealing ring groove of the support cylinder (2).

2. The ventilation duct for tunnel construction as described in claim 1, characterized in that: The support frame (3) is inserted from back to front behind the semi-circular head plate of the support cylinder (2). The support frame (3) is an H-shaped structure. Support rods in the front and back directions are provided on both the top and bottom of the support frame (3). A connecting plate is provided between the support rods of the support frame (3). A conical head is provided at the rear end of the support rod of the support frame (3). The outer circumference of the front end of the support rod of the support frame (3) is threaded. A locking nut is installed on the outer circumference of the front end of the support rod of the support frame (3) through the thread.

3. The ventilation duct for tunnel construction as described in claim 2, characterized in that: The assembly ring groove of the support cylinder (2) is fitted with a mating tension spring (4), and the surface of the mating tension spring (4) is provided with a corrosion-resistant layer.

4. The ventilation duct for tunnel construction as described in claim 3, characterized in that: The threaded blind hole of the support cylinder (2) is equipped with a fixed anti-detachment column (5). The outer circumference of the fixed anti-detachment column (5) is threaded, the outer end face of the fixed anti-detachment column (5) is provided with a regular hexagonal groove, and the inner end face of the fixed anti-detachment column (5) is provided with a frosted surface.

5. The ventilation duct for tunnel construction as described in claim 4, characterized in that: The support cylinder (2) has a docking anti-detachment cylinder (6) on both outer circumferences at both ends. The upper and lower walls of the inner end of the docking anti-detachment cylinder (6) are provided with strip holes that run through the left and right directions. Pull rods in the upper and lower directions are provided on the outer circumference of the docking anti-detachment cylinder (6).

6. The ventilation duct for tunnel construction as described in claim 5, characterized in that: The tunnel ventilation pipe (7) is tightly fitted between the docking anti-detachment cylinder (6). Limiting ring plates are provided on the outer circumference of both ends of the tunnel ventilation pipe (7). An annular sealing gasket is fitted on the outer circumference of the limiting ring plate of the tunnel ventilation pipe (7).

Images