Contact channel safety protection door

Abstract

The utility model relates to a safety protection door for a contact channel, which is characterized in that channel steels are identical in size, a plurality of channel steels are connected end to end to form guide rails and are arranged on two sides of a contact channel hole on the inner wall of a duct piece in two rows in an attached manner, notches of the channel steels of the two rows of guide rails are oppositely arranged, and the channel steels connected end to end are fixedly connected. Each steel channel is fixedly connected with the inner wall of the pipe piece through a bolt; a plurality of baffles are sequentially arranged in the two rows of channel steel in a sliding mode. The safety protection door is provided with the guide rail along the inner arc of the duct piece, large opening and closing space is not needed, operation platform space of a connection channel opening is directly reduced, and a rail-mounted area is not occupied; the problem that a safety protection door cannot be installed under the condition that no prefabricated steel pipe piece is designed at the connection channel is solved, the safety protection door can be flexibly applied to common concrete pipe pieces, the emergency disposal effect after dangerous cases occur is not affected, and excavation safety of the connection channel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a communication passage safety protection door. Background Art

[0002] During the construction of connecting passages in urban subway shield tunnels, shield underground integrated pipeline corridors, and other projects, steel safety doors are typically welded to the prefabricated steel blocks of the connecting passage's special lining rings to prevent and reduce the risk of mud and water inrush caused by excavation of the connecting passages and segment openings. With the development of urban subway construction at all levels and the emphasis on construction safety, many cities have listed the installation of safety doors as one of the primary control conditions for the acceptance of conditions before excavation of connecting passages. However, the design requirements for tunnel excavation and connecting passages vary from place to place. In some areas, the special lining rings of connecting passages use reinforced concrete segments, without prefabricated steel blocks to weld to the safety doors. Furthermore, steel safety doors are heavy, difficult to open and close, and require a large amount of welding. During actual installation, auxiliary tools such as hand winches are required, causing significant inconvenience in installation and use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to develop a communication channel safety protection door which does not occupy the track area, is easy to install and has a small processing volume.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A communication channel safety protection door includes a guide rail, multiple baffles, a connecting pipe and a handle. Each channel steel has the same size. Multiple channel steels are connected end to end to form a guide rail, which is arranged in two rows on both sides of the communication channel opening on the inner wall of the pipe segment. The notches of the channel steels in the two rows of guide rails are arranged opposite to each other. The channel steels connected end to end are fixedly connected, and each channel steel is fixedly connected to the inner wall of the pipe segment by bolts; multiple baffles are slidably arranged in the two rows of channel steels.

[0006] The beneficial effects of the present invention are as follows: compared with traditional safety doors, the present safety protection door is installed with guide rails along the inner arc of the pipe segment, and does not require a large opening and closing space, which directly reduces the operating platform space at the entrance of the connecting channel. At the same time, the feature of not occupying the track area also makes it possible for the excavation of the connecting channel and the shield tunneling to be carried out in parallel; it solves the problem that safety protection doors cannot be installed in the case of some shield tunnel connecting channels without prefabricated steel pipe segments. The invention can be flexibly applied to ordinary concrete pipe segments and does not affect the emergency response effect after dangerous situations occur in the tunnel during excavation, thereby ensuring the safety of excavation of the connecting channel; the construction process is simple, the processing volume is small, a large amount of steel materials are saved, the use is flexible, and the labor and equipment costs required for installation, processing and connection are saved, which indirectly shortens the project construction period and provides safe and controllable excavation conditions for the connecting channel.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, adjacent channel steels are fixed by welding.

[0009] Furthermore, the installation directions of the bolts all point to the center of the inner wall of the pipe segment.

[0010] Furthermore, it also includes a connecting pipe, which is provided on the center line of the baffle and is a square pipe; the baffle is a steel plate.

[0011] Furthermore, it also includes handles, and handles are provided at both ends of the baffle.

[0012] Furthermore, caulking material is filled between the channel steel and the inner wall of the pipe segment.

[0013] Furthermore, the inside of the channel steel is coated with engine oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a first structural diagram of a communication channel safety protection door of the utility model;

[0015] Figure 2 This is a second structural diagram of a communication channel safety protection door of the utility model;

[0016] Figure 3 This is a third structural schematic diagram of a communication channel safety protection door of the utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0018] 1. Guide rail; 11. Channel steel; 12. Bolt; 2. Segment; 21. Opening of connecting channel; 3. Baffle; 4. Connecting pipe; 5. Handle. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figures 1 to 3 As shown, embodiment 1 of the utility model is a communication channel safety protection door, including a guide rail 1, multiple baffles 3, a connecting pipe 4 and a handle 5. Each channel steel 11 has the same size. Multiple channel steels 11 are connected end to end to form a guide rail 1, which is arranged in two rows on both sides of the communication channel opening 21 on the inner wall of the pipe segment 2, and the notches of the channel steels 11 of the two rows of guide rails 1 are arranged opposite to each other. The channel steels 11 connected end to end are fixedly connected, and each channel steel 11 is fixedly connected to the inner wall of the pipe segment 2 by bolts 12; multiple baffles 3 are slidably arranged in the two rows of channel steels 11 in sequence.

[0021] Compared with traditional safety doors (square door frames, which need to be connected to steel pipe segment baffles), this safety protection door installs the guide rail 1 along the inner arc of the pipe segment 2, and does not require a large opening and closing space, which directly reduces the operating platform space of the connecting channel opening 21. At the same time, the feature of not occupying the track area also makes it possible for the excavation of the connecting channel and the shield tunneling to be carried out in parallel; it solves the problem that safety protection doors cannot be installed in the design of some shield tunnel connecting channels without prefabricated steel pipe segments. The invention can be flexibly applied on ordinary concrete pipe segments and does not affect the emergency response effect after dangerous situations occur in the tunnel during excavation, thereby ensuring the safety of excavation of the connecting channel; the construction process is simple, the processing volume is small, a large amount of steel materials are saved, and it is flexible to use, saving the labor and equipment costs required for installation, processing and connection, indirectly shortening the project construction period, and providing safe and controllable excavation conditions for the connecting channel. In specific implementation, the channel steel 11 is made of 6m*60mm*20mm channel steel bars and is cut into 20cm sections using a cutting machine; the baffle 3 is 10mm thick, 45cm wide, and its length is determined according to the net distance between the channel steels 11 on both sides.

[0022] Embodiment 2 of the present invention is a communication channel safety protection door. Based on embodiment 1, adjacent channel steels 11 are fixed by welding. The welding strength is high and the integrity of the channel steels 11 is good.

[0023] In Example 3 of the present invention, a safety door for a communication passage is provided. Based on Example 1, the bolts 12 are installed in directions pointing toward the center of the inner wall of the pipe segment 2. This ensures uniform force distribution and prevents localized force concentration on the inner wall of the pipe segment 2, which could cause cracks in the inner wall and pose a safety hazard.

[0024] Example 4 of the present invention is a communication channel safety protection door. Based on Example 1, it further includes a connecting pipe 4, which is disposed along the centerline of the baffle 3 and is a square tube; the baffle 3 is a steel plate. This enhances the structural strength of the baffle 3 and prevents it from bending and causing jamming when sliding within the guide rail 1. In practice, the square tube has a diameter of 50 x 50 mm and is the same length as the baffle 3. The thickness of the square tube + the thickness of the baffle 3 equals the distance between the two legs of the channel steel 11.

[0025] Example 5 of the present invention is a communication channel safety protection door. Based on Example 4, it further includes handles 5 , which are provided at both ends of the baffle 3 . This facilitates the operator to grip the baffle 3 and slide it, saving effort. In a specific implementation, both handles 5 are arranged with the connecting tube 4 as the axis of symmetry.

[0026] Example 6 of the present invention provides a communication channel safety door. Based on Example 1, caulking material is added between the channel steel 11 and the inner wall of the pipe segment 2 to prevent water leakage from the communication channel opening 21 after installation. In practice, the caulking material is foam glue or grease. To prevent water leakage from the front of the safety door, sponge strips can be inserted between each baffle 3.

[0027] Embodiment 7 of the present invention is a communication channel safety protection door. Based on any one of embodiments 1 to 6, the channel steel 11 is coated with engine oil to reduce the friction of the baffle 3 sliding in the guide rail 1, making installation more convenient.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A communication channel safety protection door, characterized in that: The invention comprises a guide rail (1), a plurality of baffles (3), a connecting pipe (4) and a handle (5), wherein each channel steel (11) has the same size, and a plurality of the channel steels (11) are connected end to end to form a guide rail (1), and are arranged in two rows on both sides of a communication channel opening (21) on the inner wall of a pipe segment (2), and the notches of the channel steels (11) of the two rows of the guide rails (1) are arranged opposite to each other, and the channel steels (11) connected end to end are fixedly connected, and each channel steel (11) is fixedly connected to the inner wall of the pipe segment (2) by means of the bolts (12); a plurality of the baffles (3) are sequentially slidably arranged in the two rows of the channel steels (11).

2. A communication channel safety protection door according to claim 1, characterized in that: Adjacent channel steels (11) are fixed by welding.

3. A communication channel safety protection door according to claim 1, characterized in that: The installation directions of the bolts (12) all point to the center of the inner wall of the tube segment (2).

4. A communication channel safety protection door according to claim 1, characterized in that: It also includes a connecting pipe (4), which is provided on the center line of the baffle (3), and the connecting pipe (4) is a square pipe; the baffle (3) is a steel plate.

5. A communication channel safety protection door according to claim 4, characterized in that: It also includes handles (5), and both ends of the baffle (3) are provided with the handles (5).

6. A communication channel safety protection door according to claim 1, characterized in that: The space between the channel steel (11) and the inner wall of the tube segment (2) is filled with caulking material.

7. A communication channel safety protection door according to any one of claims 1 to 6, characterized in that: The channel steel (11) is coated with engine oil.

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