Method for installing air pipe in narrow space of subway station

Abstract

The invention relates to the technical field of air pipe installation, in particular to a subway station narrow space air pipe installation method which comprises the following steps that S1, a walking device is arranged, a lifting device is arranged on the walking device, an adjusting device is arranged on the lifting device, and a bearing device is arranged on the adjusting device; s2, the air pipe is placed on a bearing device, and a lifting device is started to drive the air pipe to reach a mounting area; s3, an adjusting device is started to finely adjust the position of one end of the pre-installed air pipe so that the end of the pre-installed air pipe can be in butt joint with the adjacent air pipe, and then the butt joint position of the adjacent air pipes is fastened; and S4, the pipe body part of the air pipe is fixed through a fixing support installed in the air pipe installation area in advance. By means of the equipment, the air pipe can be conveniently installed, operation is convenient, the installation precision is high, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air duct installation, and in particular to a method for installing air ducts in a narrow space of a subway station. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of urban rail transit systems, subway stations, as an important part of urban public transportation, are receiving increasing attention in their design and construction. During the construction of subway stations, the installation of air ducts is a key link in ensuring the normal operation of the ventilation system in the station.

[0003] Before installing the air duct, it is necessary to install a fixing frame for the air duct in the ceiling area of ​​the subway station where the air duct is installed, and then install multiple air ducts in sequence. At present, the installation of air ducts in subway stations mainly relies on manual operation and the use of simple mechanical tools. However, due to the small space in the subway station, the traditional air duct installation method often faces many challenges, such as limited operating space and difficult to ensure installation accuracy, which leads to low construction efficiency.

[0004] To this end, the present application provides a method for installing air ducts in a narrow space of a subway station. Summary of the invention

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide a method for installing air ducts in a small space in a subway station, so as to solve the problem mentioned in the background technology that due to the limited space in the subway, the installation accuracy is difficult to ensure, resulting in low construction efficiency.

[0006] The above-mentioned object of the present application is achieved through the following technical solution: A method for installing an air duct in a narrow space of a subway station, characterized in that it comprises the following steps: S1, a traveling device is provided, a lifting device is provided on the traveling device, an adjusting device is provided on the lifting device, and a bearing device is provided on the adjusting device; S2, placing the air duct on the carrying device, and starting the lifting device to drive the air duct to the installation area; S3, starting the adjustment device to fine-tune the position of one end of the pre-installed air duct so that it is butted against the adjacent air duct, and then tightening the butt joint of the air duct; S4, fix the pipe body of the air duct using a fixing bracket pre-installed in the branch air duct installation area.

[0007] By adopting the above technical scheme, most of the existing installation methods of air ducts are currently installed manually. When installing air ducts in a small space in a subway station, due to the small space, multiple people often cooperate in the installation, and when the air ducts are connected, it takes a long time to complete the installation, which makes it difficult to ensure the accuracy and the construction efficiency is low. The present application installs a lifting device on the walking device, an adjusting device on the lifting device, and a bearing device on the adjusting device. When the air duct needs to be installed, the equipment is moved to the bottom of the area where the air duct needs to be installed, the air duct is placed on the bearing device, the lifting device is started to make the air duct rise to the bottom of the installation area, and then the adjusting device is started to adjust the position of the air duct so that the interface of the air duct is connected with the interface of the adjacent air duct, and then the interface is fixed. Finally, the pipe body area of ​​the air duct is fixed by using a fixing frame pre-installed in the air duct installation area, and the lifting device is lowered to complete the work. When the air duct is installed using the equipment of the present application, it does not require the cooperation of multiple people, and the installation port of the air duct can be easily connected through the adjusting device. The operation is convenient, the installation accuracy is high, and the construction efficiency is improved.

[0008] A further optimized solution is that the walking device includes a vehicle plate, on which is installed a lifting device for driving the air duct to rise or fall, an adjusting device is installed at the upper end of the lifting device, and the adjusting device is used to adjust the installation position and angle of the air duct, and a bearing device for bearing the air duct is installed at the upper end of the adjusting device.

[0009] By adopting the above technical scheme, when the adjusting device adjusts the angle of the air duct, in order to ensure the stability of the equipment and protect the personal safety of the installation workers, a lifting device is installed on the vehicle plate, and the adjusting device is installed on the lifting device, and a carrying device is installed on the adjusting device. When it is necessary to adjust the angle of the air duct placed on the carrying device, the adjusting device only needs to drive the carrying device to rotate to adjust the installation angle of the air duct, and there is no need for the lifting device to rotate, thereby improving the stability of the equipment when installing the air duct and protecting the personal safety of the installation workers.

[0010] The cam is connected to the second frame by a plurality of levers, the lever being connected to a plurality of levers which are connected to the plurality of levers, and the lever being connected to a plurality of levers which are connected to the plurality of levers.

[0011] By adopting the above technical solution, in order to ensure the stability of the adjustment device installed on the lifting device when it is rising, the driving motor rotates to drive the driving frame to move. When the driving frame drives the first driving rod and the second driving rod to rise or fall, the first driven rod and the second driven rod are driven to rise or fall at the same time, thereby ensuring that the lifting plate can rise or fall in a horizontal state, thereby ensuring that the bearing device installed on the lifting plate can be stably lifted and lowered.

[0012] According to a further optimized solution, an inverted T-shaped groove is provided at the upper end of the rotating frame, and an inverted T-shaped guide rail cooperating with the inverted T-shaped groove is installed on the lifting plate.

[0013] By adopting the above technical solution, in order to further ensure the stability of the lifting plate, an inverted T-shaped groove is opened at the upper end of the rotating frame, and an inverted T-shaped guide rail matching the inverted T-shaped groove is installed at the bottom of the lifting plate. When the lifting plate rises or falls, the inverted T-shaped groove slides on the inverted T-shaped guide rail, thereby further ensuring the stability of the lifting plate during the rising or falling process, and then ensuring the stability of the bearing device installed on the lifting plate.

[0014] According to a further optimized solution, guide grooves are provided at the bottom of both ends of the driving frame, slide rails matching the guide grooves are installed on the vehicle plate, and reinforcing rods are installed between the first driven rod and the second driven rod and between the first driving rod and the second driving rod.

[0015] By adopting the above technical solution, in order to further ensure the stability of the lifting device when it is rising or falling, guide grooves are opened at the bottom of both ends of the driving frame, and slide rails matching the guide grooves are installed on the vehicle plate, thereby ensuring the stability of the first driven rod, the second driven rod, the first driving rod and the second driving rod, and preventing shaking when rising or falling, thereby ensuring the stability of the bearing device installed on the lifting device and the branch pipe installed on the bearing device. In addition, a reinforcing rod is installed between the first driven rod and the second driven rod and the first driving rod and the second driving rod, further ensuring the relative stability of the first driven rod and the second driven rod, and the first driving rod and the second driving rod when rising or falling.

[0016] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein the adjusting device is to be mounted on the front of the engine and the adjusting plate, and the adjusting plate is connected to the front of the engine with a bolt, and the bolt has a round shank to contact with the adjusting plate. The adjusting device is to be mounted on the front of the engine and the adjusting plate is connected to the front of the engine with a bolt, and the bolt has a round shank to contact with the adjusting plate

[0017] By adopting the above technical solution, when installing the branch pipe, if the installation port at one end of the branch pipe cannot be aligned with the position of the adjacent installation port, the adjustment motor is started, the adjustment motor drives the driving gear, and the driving gear engages with the arc-shaped rack, so that the adjustment plate rotates on the lifting plate, and then the installation port of the air duct is easily aligned with the installation port of the adjacent air duct, which is convenient for quick installation.

[0018] A further optimized solution is that the bearing device includes a plurality of door-shaped bearing brackets installed on the upper end of the adjustment plate, and the plurality of door-shaped bearing brackets are arranged in an array along the length direction of the adjustment plate, and bearing plates are installed at two opposite ends of each door-shaped bearing bracket, and the bearing plates are perpendicular to the upper end of the door-shaped bearing bracket, and a spring is installed on the inner side of the bearing plate above the adjustment plate, and a compression plate is installed at the other end of the spring.

[0019] By adopting the above technical solution, when installing the air duct, the air duct is placed on the bearing device. If the position of the air duct needs to be adjusted, if the air duct is not restricted by the fixing device, the air duct may slip. In order to solve this technical problem, a plurality of door-shaped bearing brackets are arrayed on the upper end of the adjustment plate, and bearing plates are installed oppositely at the upper ends of each door-shaped bearing bracket, and a spring is installed on the bearing plate, and a compression plate is installed on the other end of the spring. When the air duct is placed on the bearing device, the air duct squeezes the compression plate, and the compression plate squeezes the spring. The compression plate firmly squeezes the air duct due to the rebound force of the spring, so that the air duct can be squeezed onto the door-shaped bearing bracket by the compression plate when the adjustment device rotates, thereby preventing the air duct from sliding off the bearing device during installation, thereby improving the installation efficiency.

[0020] According to a further optimization scheme, an operating platform is arranged on one side of the supporting plate, the operating platform is fixedly connected to the supporting plate, a protective fence is arranged around the operating platform, and the base of the protective fence is fixedly connected to the operating platform.

[0021] By adopting the above technical solution, when workers install the air duct, there may be risks of accidents due to the high distance from the ground. In order to prevent accidents among workers during the construction process, an operating platform is installed on one side of the load-bearing plate, and a protective fence is installed around the operating platform. In this way, when workers install the air duct at a height, the operating platform and the protective fence can ensure the safety of the installation workers and prevent them from falling from a height.

[0022] According to a further optimization scheme, free wheel assemblies are fixedly installed at the four corners of the bottom of the vehicle plate, and the free wheel assemblies are self-locking universal wheels.

[0023] By adopting the above technical solution, self-locking universal wheels are installed at the bottom of the vehicle plate, which can facilitate the movement of the equipment. After adjusting the installation position, the equipment can be self-locked to prevent the equipment from moving during operation, thereby ensuring the stability of the equipment and improving the installation efficiency of the air duct. According to a further optimized solution, a push rod is installed on one side of the vehicle plate.

[0024] By adopting the above technical solution, the push bar facilitates pushing the equipment.

[0025] In summary, this application at least includes the following beneficial technical effects: 1. By setting a walking device, a lifting device, an adjustment device and a carrying device, when using the equipment of the present application to install the air duct, it is not necessary to cooperate with multiple people. It is only necessary to place the equipment under the area where the air duct is pre-installed, and lift the air duct to the installation area through the lifting device, and then dock the installation port of the air duct with the adjacent installation port through the adjustment device, and then fix the docked installation port through the fixing device, and then use the fixing bracket pre-installed in the installation area to fix the pipe body of the air duct. It is easy to operate, has high installation accuracy and improves construction efficiency.

[0026] 2. By setting the first driven rod, the second driven rod, the first driving rod, the second driving rod, the T-shaped groove, the T-shaped guide rail, the guide groove, the slide rail and the reinforcing bar, the stability of the lifting device during lifting is ensured, thereby ensuring the stability of the load-bearing device installed on the lifting plate and the air duct installed on the load-bearing device during rising.

[0027] 3. Through the provided adjustment device, the position of the installation port of the air duct can be adjusted conveniently and quickly, thereby improving the efficiency of docking with the installation port of the adjacent air duct and achieving the purpose of rapid installation.

[0028] 4. By providing the door-shaped load-bearing bracket, spring and compression plate, when the air duct is placed on the door-shaped load-bearing bracket, the spring and the compression plate can firmly fix the air duct to prevent the air duct from sliding from the top during installation.

[0029] 5. The safety of workers can be protected by setting up an operating platform and installing protective fences around the operating platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the embodiment; Figure 2 is a schematic diagram of the overall structure of the embodiment from another viewing angle; Figure 3 is an exploded view of the adjusting device of the embodiment and a schematic diagram of the lifting plate; Figure 4 It is another perspective diagram of the overall structure of the embodiment.

[0031] Reference numerals: 1, walking device; 10, vehicle plate; 11, free wheel assembly; 12, push rod; 2, lifting device; 200, first fixed frame; 201, second fixed frame; 202, first driven rod; 203, second driven rod; 204, rotating frame; 205, lifting plate; 206, third fixed frame; 207, fourth fixed frame; 208, first driving rod; 209, second driving rod; 210, driving frame; 211, threaded rod; 212, driving driving motor; 213, inverted T-shaped groove; 214, inverted T-shaped guide rail; 215, reinforcing rod; 216, slide rail; 3, adjusting device; 30, connecting column; 31, adjusting plate; 32, locking part; 33, fixing column; 34, arc-shaped through groove; 35, adjusting motor; 36, driving gear; 37, arc-shaped rack; 4, bearing device; 40, door-shaped bearing bracket; 41, bearing plate; 42, spring; 43, compression plate; 44, operating platform; 45, protective fence. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] A method for installing an air duct in a narrow space of a subway station comprises the following steps: S1, a walking device 1 is provided, a lifting device 2 is provided on the walking device 1, an adjusting device 3 is provided on the lifting device 2, and a carrying device 4 is provided on the adjusting device 3; S2, placing the air duct on the carrying device 4, and starting the lifting device 2 to drive the air duct to the installation area; S3, start the adjustment device 3 to fine-tune the position of one end of the pre-installed air duct so that it is connected with the adjacent air duct, and then tighten the connection between the adjacent air ducts; S4, fix the pipe body of the air duct using a fixing bracket pre-installed in the air duct installation area.

[0034] Example, see Figure 1 and Figure 2 The walking device 1 includes a vehicle plate 10, on which is mounted a lifting device 2 for driving the air duct to rise or fall. An adjusting device 3 is mounted on the upper end of the lifting device 2. The adjusting device 3 is used to adjust the installation position and angle of the air duct. A bearing device 4 for bearing the air duct is mounted on the upper end of the adjusting device 3.

[0035] In the embodiment of the present disclosure, the lifting device 2 includes a first fixed frame 200 and a second fixed frame 201 fixedly mounted on the vehicle plate 10, the first fixed frame 200 is rotatably connected to the first driven rod 202, the second fixed frame 201 is rotatably connected to the second driven rod 203, a rotating frame 204 is rotatably connected between the upper ends of the first driven rod 202 and the second driven rod 203, the rotating frame 204 is slidably connected to the lifting plate 205, and a third fixed frame 206 located directly above the first fixed frame 200 and a fourth fixed frame 207 located directly above the second fixed frame 201 are fixedly mounted on one side of the lifting plate 205 away from the rotating frame 204, the third fixed frame 206 is rotatably connected to the first driven rod 202 and the second driven rod 203, and the rotating frame 204 is slidably connected to the lifting plate 205. A driving rod 208, a second driving rod 209 rotatably connected to the fourth fixed frame 207, the first driven rod 202 and the first driving rod 208 are cross-arranged and rotatably connected at the intersection, the second driven rod 203 and the second driving rod 209 are cross-arranged and rotatably connected at the intersection, a driving frame 210 is rotatably connected between the bottom ends of the first driving rod 208 and the second driving rod 209, the driving frame 210 is threadedly connected to a threaded rod 211, one end of the threaded rod 211 is provided with a driving motor 212, the driving motor 212 is fixedly connected to the vehicle plate 10, and is located between the driving frame 210 and the first fixed frame 200, and the output end of the driving motor 212 is fixedly connected to the threaded rod 211.

[0036] Specifically, an inverted T-shaped groove 213 is formed at the upper end of the rotating frame 204 , and an inverted T-shaped guide rail 214 matching the inverted T-shaped groove 213 is installed on the lifting plate 205 .

[0037] Specifically, guide grooves are provided at the bottom of both ends of the driving frame 210, a slide rail 216 matching the guide grooves is fixedly installed on the vehicle plate 10, and a reinforcing rod 215 is fixedly installed between the first driven rod 202 and the second driven rod 203 and between the first driving rod 208 and the second driving rod 209.

[0038] In the embodiments of the present disclosure, refer to Figure 3The adjusting device 3 includes a connecting column 30 vertically mounted at the center of the upper end of the lifting plate 205, the connecting column 30 is rotatably connected to the adjusting plate 31, a through hole is opened at the center of the adjusting plate 31, the connecting column 30 passes through the through hole and is rotatably connected to the adjusting plate 31, and a locking portion 32 is fixedly installed at the upper end of the connecting column 30, a fixing column 33 is installed on the bottom surface of the adjusting plate 31 away from the connecting column 30, and an arc-shaped through slot 34 is opened on the lifting plate 205, and the fixing column 33 passes through the arc-shaped through slot 34 and connects to the lifting plate 2 05 sliding connection, a locking portion 32 is installed on the bottom surface of the fixed column 33, an adjusting motor 35 is installed on the upper end of the adjusting plate 31 away from the locking portion 32, the output end of the adjusting motor 35 passes through the adjusting plate 31 and is rotatably connected to the adjusting plate 31, and a driving gear 36 is fixedly installed, the lifting plate 205 is provided with an arc-shaped groove, the arc-shaped groove and the arc-shaped through groove have the same curvature, and the arc openings are arranged opposite to each other, an arc-shaped rack 37 is installed in the arc-shaped groove, and the driving gear 36 and the arc-shaped rack 37 are meshingly connected.

[0039] In the embodiments of the present disclosure, refer to Figure 4 The bearing device 4 includes a plurality of door-shaped bearing brackets 40 installed on the upper end of the adjustment plate 31. The plurality of door-shaped bearing brackets 40 are arranged in an array along the length direction of the adjustment plate 31. Bearing plates 41 are installed oppositely at both ends of the door-shaped bearing bracket 40. The bearing plates 41 are perpendicular to the upper ends of the door-shaped bearing brackets 40. A spring 42 is installed on the inner side of the bearing plate 41 above the adjustment plate, and a compression plate 43 is installed at the other end of the spring 42.

[0040] Specifically, an operating platform 44 is provided on one side of the carrying plate 41 , and the operating platform 44 is fixedly connected to the carrying plate 41 . A protective fence 45 is provided around the operating platform 44 , and a base of the protective fence 45 is fixedly connected to the operating platform 44 .

[0041] In the embodiment of the present disclosure, free wheel assemblies 11 are fixedly installed at the four corners of the bottom of the vehicle plate 10 . The free wheel assembly 11 is a self-locking universal wheel. A push rod 12 is installed on one side of the vehicle plate 10 .

[0042] In a specific implementation process, one or more assembled air ducts are placed on the door-shaped bearing bracket 40, and the compression spring 42 firmly fixes the compression plate 43 and the air duct, and the driving motor 212 is started. The driving motor 212 drives the threaded rod 211 to rotate, and the threaded rod 211 drives the driving frame 210 to move, thereby driving the first driving rod 208, the second driving rod 209, the first driven rod 202 and the second driven rod 203 to move upward, thereby driving the lifting plate 205, and the bearing assembly and the air duct on the lifting plate 205 to rise. After the air duct reaches the predetermined installation position, the adjustment motor 35 is started, and the adjustment motor 35 drives the driving gear 36 to rotate on the arc-shaped rack 37, thereby driving the adjustment plate 31 to rotate, and the adjustment plate 31 drives the bearing device 4 to rotate, and the bearing device 4 drives the air duct to rotate, thereby making the installation port of the air duct dock with the installation port of the adjacent air duct, and then fixed by the fixing device, and finally the pipe body of the air duct is fixed by the fixing frame pre-installed in the air duct installation area.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for installing air ducts in a narrow space of a subway station, characterized in that: The following steps are involved: S1, a walking device (1) is provided, a lifting device (2) is provided on the walking device (1), an adjusting device (3) is provided on the lifting device (2), and a carrying device (4) is provided on the adjusting device (3); S2, placing the air duct on the carrying device (4), and starting the lifting device (2) to drive the air duct to the installation area; S3, starting the adjustment device (3) to fine-tune the position of one end of the pre-installed air duct so that it is butted against the adjacent air duct, and then tightening the butt joint of the adjacent air duct; S4, fix the pipe body of the air duct using a fixing bracket pre-installed in the air duct installation area.

2. The method for installing air ducts in a narrow space of a subway station according to claim 1, characterized in that: The walking device (1) comprises a vehicle plate (10), on which a lifting device (2) is installed for driving the air duct to rise or fall, an adjusting device (3) is installed at the upper end of the lifting device (2), and the adjusting device (3) is used to adjust the installation position and angle of the air duct, and a bearing device (4) for bearing the air duct is installed at the upper end of the adjusting device (3).

3. The method for installing air ducts in a narrow space of a subway station according to claim 1, characterized in that: The lifting device (2) comprises a first fixed frame (200) and a second fixed frame (201) fixedly mounted on a vehicle plate (10); a first driven rod (202) is rotatably connected to the first fixed frame (200); a second driven rod (203) is rotatably connected to the second fixed frame (201); a rotating frame (204) is rotatably connected between the upper ends of the first driven rod (202) and the second driven rod (203); a lifting plate (205) is slidably connected to the rotating frame (204); a third fixed frame (206) located directly above the first fixed frame (200) and a fourth fixed frame (207) located directly above the second fixed frame (201) are fixedly mounted on a side of the lifting plate (205) away from the rotating frame (204); the third fixed frame (206) The first driving rod (208) is rotatably connected to the fourth fixed frame (207); the second driving rod (209) is rotatably connected to the fourth fixed frame (207); the first driven rod (202) and the first driving rod (208) are cross-arranged and rotatably connected at the intersection; the second driven rod (203) and the second driving rod (209) are cross-arranged and rotatably connected at the intersection; a driving frame (210) is rotatably connected between the bottom ends of the first driving rod (208) and the second driving rod (209); the driving frame (210) is threadedly connected to a threaded rod (211); one end of the threaded rod (211) is provided with a driving motor (212); the driving motor (212) is fixedly connected to the vehicle plate (10); and the output end of the driving motor (212) is fixedly connected to the threaded rod (211).

4. The method for installing air ducts in a narrow space of a subway station according to claim 3, characterized in that: An inverted T-shaped groove (213) is formed at the upper end of the rotating frame (204), and an inverted T-shaped guide rail (214) matching the inverted T-shaped groove (213) is installed on the lifting plate (205).

5. The method for installing air ducts in a narrow space of a subway station according to claim 3, characterized in that: The bottoms of both ends of the driving frame (210) are provided with guide grooves, a slide rail (216) matching the guide grooves is installed on the vehicle plate (10), and a reinforcing rod (215) is installed between the first driven rod (202) and the second driven rod (203) and between the first driving rod (208) and the second driving rod (209).

6. The method for installing air ducts in a narrow space of a subway station according to claim 1, characterized in that: The adjusting device (3) comprises a connecting column (30) vertically mounted at the center of the upper end of the lifting plate (205); the connecting column (30) is rotatably connected to the adjusting plate (31); a through hole is provided at the center of the adjusting plate (31); the connecting column (30) passes through the through hole and is rotatably connected to the adjusting plate (31); a locking portion (32) is fixedly mounted on the upper end of the connecting column (30); a fixing column (33) is mounted on the bottom surface of the adjusting plate (31) away from the connecting column (30); an arc-shaped through slot (34) is provided on the lifting plate (205); the fixing column (33) passes through the arc-shaped through slot (34) and is connected to the lifting plate (205); The lifting plate (205) is slidably connected, a locking portion (32) is installed on the bottom surface of the fixing column (33), an adjusting motor (35) is installed on the upper surface of the adjusting plate (31) away from the locking portion (32), the output end of the adjusting motor (35) passes through the adjusting plate (31) and is rotatably connected to the adjusting plate (31), a driving gear (36) is fixedly installed on the output end of the adjusting motor (35), the lifting plate (205) is provided with an arc-shaped groove with the same arc as the arc-shaped through groove (34), an arc-shaped rack (37) is installed in the arc-shaped groove, and the driving gear (36) and the arc-shaped rack (37) are meshingly connected.

7. The method for installing air ducts in a narrow space of a subway station according to claim 1, characterized in that: The bearing device (4) comprises a plurality of door-shaped bearing brackets (40) mounted on the upper end of the adjustment plate (31), the plurality of door-shaped bearing brackets (40) being arranged in an array along the length direction of the adjustment plate (31), and bearing plates (41) being mounted oppositely at two ends of each door-shaped bearing bracket (40), the bearing plates (41) being perpendicular to the upper end of the door-shaped bearing bracket (40), a spring (42) being mounted on the inner side of the bearing plate (41) above the adjustment plate, and a compression plate (43) being mounted on the other end of the spring (42).

8. The method for installing air ducts in a narrow space of a subway station according to claim 7, characterized in that: An operating platform (44) is provided on one side of the carrying plate (41), the operating platform (44) is fixedly connected to the carrying plate (41), a protective fence (45) is provided around the operating platform (44), and a base of the protective fence (45) is fixedly connected to the operating platform (44).

9. The method for installing air ducts in a narrow space of a subway station according to claim 1, characterized in that: Freewheel assemblies (11) are fixedly installed at the four corners of the bottom of the vehicle plate (10), and the freewheel assemblies (11) are universal wheels with self-locking function.

10. The method for installing air ducts in a narrow space of a subway station according to claim 9, characterized in that: A push rod (12) is installed on one side of the vehicle plate (10).

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