Material transportation construction method for subway station stair section

Abstract

The present application relates to the material transportation method in the subway station extension project under operation state, in particular to the material transportation construction method of the subway station stair section, aiming at the problem of material transportation difficulty in the construction site, two transportation systems are made, one is the electric monorail material lifting system for transporting long pipeline, and the other is the electric double-track material lifting system for transporting the rest equipment. The electric double-track material lifting system mainly transports small volume goods such as sandstone, air pipe, bridge, cable, valve, distribution box and water pump, and the electric monorail material lifting system mainly transports long goods such as pipeline, channel steel and angle steel. The implementation of the method improves the construction efficiency and ensures the construction safety.

Description

TECHNICAL FIELD

[0001] The present application relates to a material transportation method in a metro station expansion project under operation, in particular to a material transportation construction method for a stair section of a metro station. BACKGROUND

[0002] With the rapid development of China's economy and the acceleration of modern life pace, the subway has become an indispensable means of transportation in major cities, and has made great contributions in relieving urban traffic congestion, facilitating people's travel and improving urban operation efficiency. However, the rapid development of cities has caused some old subway stations to be unable to meet the operation demand, and need to be expanded and reconstructed. When the underground expansion project of the metro station is constructed, since the main structure of the metro station has been completed, there is no special construction passage for the expansion project, and the materials and equipment can only enter and exit through the entrance and exit stair section, which is difficult to construct, and once a safety accident occurs in the expansion and reconstruction project of the metro station under operation, unpredictable consequences will be caused. SUMMARY

[0003] The present application provides a material transportation construction method for a stair section of a metro station to solve the problem of difficult material transportation in the expansion and reconstruction project of the metro station under operation.

[0004] The present application is implemented by using the following technical solution: a material transportation construction method for a stair section of a metro station, comprising the following steps: transportation equipment manufacturing, material transportation, mechanical and electrical engineering construction, decoration engineering construction, system debugging and acceptance.

[0005] The transportation equipment includes an electric single-track material lifting system and an electric double-track material lifting system, the electric single-track material lifting system includes a winch, a pulley, a slide rail and a slide rail support, the winch and the pulley are fixed on the upper part of the stair passage, and the slide rail is laid on the stair passage through the slide rail support;

[0006] The electric double-track material lifting system includes a winch, a pulley, a slide rail, a slide rail support and a transportation vehicle, the winch and the pulley are arranged on the upper part of the stair passage to provide power for the transportation vehicle, two slide rails are laid on the stair passage through the slide rail support, a chassis capable of sliding above the slide rail is arranged on the slide rail, a pin shaft is arranged at the end of the chassis, the transportation vehicle is supported on the chassis, a sleeve is arranged at the bottom of the transportation vehicle, the pin shaft is sleeved in the sleeve, a rollover prevention rod is rotatably arranged on the front side wall of the transportation vehicle, the rollover prevention rod is L-shaped, the middle part of the long side of the rollover prevention rod is hingedly connected to the front side wall of the transportation vehicle, the short side of the rollover prevention rod is below the chassis at the bottom of the transportation vehicle, and the transportation vehicle and the chassis are connected into an integral whole.

[0007] The electric double-track material lifting system mainly transports small-volume goods such as sand, air pipes, bridge frames, cables, valves, distribution boxes and water pumps. When the goods are transported to the bottom of a stairway and need to be transported by the overturning of the transport vehicle, the anti-overturning rod is rotated, the short side of the anti-overturning rod is separated from the bottom frame of the transport vehicle, the transport vehicle is overturned upward, the transport vehicle can rotate around the pin shaft, and the transported goods are poured out after the transport vehicle is overturned. The electric single-track material lifting system mainly transports long goods such as pipes, channel steels and angle steels. The slide rail is a straight rail, which can slide the long strip material from the top end of the slide rail to the bottom, and the winch and the steel wire can also be used to pull the long strip material, so that the long strip material can be transported from bottom to top, and the transportation efficiency is ensured.

[0008] The subway station stair section material transportation construction method further increases the movable partition plate in the middle of the transport vehicle, and divides the internal space of the transport vehicle into an A area and a B area, wherein the A area is at the front side of the transport vehicle, the B area is at the rear side of the transport vehicle, the volume of the B area is cotα times of the volume of the A area, the bottom length of the A area is cotα times of the bottom length of the B area, α is the inclination angle of the stairway, and the sleeve pipe at the bottom of the transport vehicle is on the boundary line between the A area and the B area. In this way, the front and rear moments of the trolley are consistent, the trolley can be overturned only by providing a small external force, and the diversification of transportation is ensured.

[0009] The method improves the construction efficiency and ensures the construction safety, and has the following technical advantages:

[0010] 1. Advancement: The stair transportation equipment of the method is more convenient and faster than the traditional transportation method.

[0011] 2. Simplicity: The method uses simple materials and solves the material transportation problem by using simple principles, and the transportation system is simple to manufacture and easy to operate.

[0012] 3. Economy: The technology reduces the manpower for carrying, improves the construction efficiency and saves the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the electric single-track material lifting system.

[0014] Figure 2 It is a schematic diagram of the electric double-track material lifting system.

[0015] Figure 3 It is a structural schematic diagram of the transport vehicle.

[0016] Figure 4 It is a schematic diagram of the overturning of the transport vehicle.

[0017] Figure 5 It is a schematic diagram of the labor-saving overturning of the transport vehicle.

[0018] In the figure: 1 - hoist, 2 - pulley, 3 - slide rail, 4 - slide rail support, 5 - transport vehicle, 6 - chassis, 7 - sleeve, 8 - anti-rollover rod, 9 - movable partition, 10 - stairway. Embodiment

[0019] The subway station stair section material transportation construction method comprises the following steps: transport equipment manufacturing, material transportation, mechanical and electrical engineering construction, decoration engineering construction, system debugging and acceptance.

[0020] Transport equipment manufacturing

[0021] Since there is no normal construction passage on site, only the inclined stairway 10, material transportation is difficult, so a material transportation equipment is needed to ensure normal transportation of materials and ensure the construction period node. Due to the characteristics of subway mechanical and electrical and decoration engineering, there are single equipment, long strip equipment, sand and stone materials, so it is decided to make two transportation systems, one is an electric monorail material lifting system for transporting long strip pipelines, and the other is an electric double-track material lifting system for transporting other equipment. The electric double-track material lifting system mainly transports small-volume goods such as sand, air pipes, bridge frames, cables, valves, distribution boxes, and water pumps, and the electric monorail material lifting system mainly transports long goods such as pipes, channel steels, and angle steels.

[0022] Electric monorail material lifting system

[0023] The electric monorail material lifting system for long strip equipment is made according to the "slide principle" and comprises a hoist 1, a pulley 2, a slide rail 3, and a slide rail support 4. The hoist 1 and the pulley 2 are fixed to the upper part of the stairway, the slide rail 3 is laid on the stairway 10 through the slide rail support 4, and the slide rail 3 is a straight track that can transport long strip materials from the top end to the bottom. The hoist 1 and the steel wire can also be used to pull the long strip materials, so that the long strip materials can be transported from bottom to top, ensuring the transportation efficiency.

[0024] Electric double-track material lifting system

[0025] An electric double-track material lifting system is constructed based on the "conveyor belt principle" to transport small-volume materials such as sand, gravel, electrical control boxes, and water pumps. The electric double-track material lifting system includes: a winch 1, pulleys 2, slide rails 3, slide rail supports 4, and a transport vehicle 5. The winch 1 and pulleys 2 are located above the stairwell 10, providing power to the transport vehicle 5. Two slide rails 3 are laid on the stairwell 10 via slide rail supports 4. A base frame 6 is installed on each slide rail 3, allowing it to slide above. A pin is installed at the end of the base frame 6, supporting the transport vehicle 5. A sleeve 7 is installed at the bottom of the transport vehicle 5, and the pin is fitted onto this sleeve 7. Inside, an anti-tipping bar 8 is rotatably installed on the front side wall of the transport vehicle 5. The anti-tipping bar is L-shaped, with the middle of its long side hinged to the front side wall of the transport vehicle, and the short side located below the bottom frame of the transport vehicle. It can connect the transport vehicle 5 and the bottom frame 6 into one unit to prevent the transport vehicle from tipping over. A movable partition 9 is also added in the middle of the transport vehicle, dividing the interior space of the transport vehicle into area A and area B. Area A is located on the front side of the transport vehicle, and area B is located on the rear side of the transport vehicle. The stair passage has an inclination angle of 30°. The volume of area B is 1.732 times that of area A, and the bottom length of area A is 1.732 times that of area B. The sleeve 7 at the bottom of the transport vehicle is on the boundary line between area A and area B. In this way, the front and rear torques of the vehicle are consistent, requiring only a small external force to tip the vehicle over, and also ensuring the diversification of transportation.

[0026] The principle behind the tipping of the transport vehicle is as follows: the internal space of the transport vehicle is divided into area A and area B, such as... Figure 5 As shown, with sleeve 7 as the fulcrum, according to the lever principle, the force in area A is F1 = resistance * resistance arm = material density * volume A * 9.8 N / kg * 1.732a, and the force in area B is F2 = effort * effort arm = material density * volume B * 9.8 N / kg * a. The principle of saving effort: since volume B = 1.732 * volume A, then F1 = F2. When the anti-rollover bar 8 is released, only a small amount of power is needed to make the transport vehicle rotate 90° clockwise along the pin 7 fulcrum, thus achieving the function of unloading the cargo.

[0027] Material transportation

[0028] Electric double-track material hoisting systems can transport small-volume materials such as sand and bricks for civil engineering; and various materials such as air ducts, cable trays, air valves, water valves, silencers, fans, water pumps, and distribution boxes for electromechanical installation projects.

[0029] Prepare the materials to be transported, sort and place the materials, transport by category and specifications, after sorting, the staff at the top of the stairway will fill the materials into the transport car, and use the anti-slip card to fix the materials to ensure that the materials do not slip. After the materials are filled, the communication station at the bottom of the stairway closes the ramp entrance, uses the communication system to confirm that there are no obstacles such as personnel on the slide rail track, and requests the power system operator to start the winch to lift the goods. The goods are transported to the construction section, and the communication station at the construction section requests the power system operator to brake the winch, and the construction personnel confirm the braking of the transport car. After the transport car is braked, the construction personnel carry the materials to the construction site.

[0030] The electric monorail material lifting system can transport various materials such as pipes, angle steels, and flat steels for electromechanical installation engineering.

[0031] The operator uses a steel cable to bundle pipe lifting rings and places the pipe on the single slide rail. The winch driver operates the winch at the platform, and the pipe slides up or down along the slide rail. The pipe reaches the top or bottom of the stairway, and the personnel carry the pipe and remove the lifting ring.

[0032] Electromechanical engineering construction

[0033] The electromechanical engineering in the property area of the station mainly includes: power lighting system, ventilation and air conditioning system, water supply and drainage and fire fighting system.

[0034] (1) The power lighting system mainly includes: low-voltage power distribution system, lighting system, emergency lighting system, lightning protection grounding system, intelligent lighting control system, and fire equipment power monitoring system.

[0035] (2) The ventilation and air conditioning system mainly includes: air conditioning system, ventilation system, and smoke control system.

[0036] (3) The water supply and drainage and fire fighting system mainly includes: production and living water supply system, fire hydrant system, automatic sprinkler fire extinguishing system, fire extinguisher system, sewage system, wastewater system, and rainwater system.

[0037] Decoration and renovation engineering construction

[0038] (1) Floor paving

[0039] In order to find a good position and elevation, should start from the door, first laid 2-3 rows of brick, as a reinforcement to pull vertical and horizontal elevation line, should be from the inside to the outside of the operation, people should not tread on the just laid brick, each brick should follow the line, the operation procedure is: before paving the brick board into half cut bucket of water to soak wet, dry after the surface no clear water, can be used. Find the level of water wet, evenly coated with cement paste (water-cement ratio of 0.4-0.5), the brushing area should not be too large, paving how much brushing how much. Combined layer of composite materials mixed: the use of cement mortar, mix ratio is 1:3 (cement: sand) dry mortar. With the mixing, before the initial setting, to prevent affecting the quality of adhesion. Paving, brick back to the top of the adhesive mortar, paving to the already brushed cement paste leveling layer, brick on the ridge slightly above the horizontal elevation line, find the right, straight, square after, brick on the pad, with a rubber hammer, in order to achieve the brick mortar full, close, solid, with the drain, the brick to the drain with a grinder saw into the kiss. Paving tiles when good one time to pave a room, large area construction, should be taken in stages, parts of the paving.

[0040] (2) aluminum alloy ceiling

[0041] Aluminum plate cover panel surface flat, neat edge, not allowed to have dirt, cracks, missing corners, warping, peeling, color difference and incomplete pattern defects.

[0042] Light steel keel divided into U-shaped and T-shaped keel two. Ceiling keel with galvanized steel plate (strip) as raw material, using cold bending process production, keel accessories with galvanized steel plate (strip) as raw material, after stamping, used to combine to the top of light steel keel accessories.

[0043] The fasteners, screws, nails used in the installation of ceiling cover panels should be galvanized. The material, specifications, installation spacing and connection method of the hangers and keels meet the design requirements. The metal hangers and keels are subjected to surface corrosion treatment.

[0044] System debugging

[0045] (1) Perform power lighting system debugging, including power supply line self-throwing, local and remote control switching, intelligent lighting function debugging.

[0046] (2) Fire pump, wastewater pump, sewage pump, and water collection pump automatic input, shutdown, and overwater level alarm test of the water supply and drainage system.

[0047] (3) Ventilation and air conditioning system includes linkage debugging of air conditioning units, fans, multi-connected machines, air conditioners, etc.

Claims

1. A construction method for transporting materials in stairwells of subway stations, characterized by: Includes the following steps: Transportation equipment manufacturing → Material transportation → Electromechanical engineering construction → Decoration and renovation engineering construction → System debugging → Acceptance; The transportation equipment includes an electric monorail material lifting system and an electric double-rail material lifting system. The electric monorail material lifting system includes a winch (1), a pulley (2), a slide rail (3) and a slide rail bracket (4). The winch (1) and pulley (2) are fixed to the upper part of the stair passage, and the slide rail (3) is laid on the stair passage through the slide rail bracket (4). The electric double-track material lifting system includes: a winch (1), pulleys (2), slide rails (3), slide rail brackets (4), and a transport vehicle (5). The winch (1) and pulleys (2) are installed on the upper part of the stair passage to provide power for the transport vehicle. Two slide rails (3) are laid on the stair passage through the slide rail brackets (4). A base frame (6) that can slide on the slide rails (3) is provided. A pin is provided at the end of the base frame (6). The transport vehicle (5) is supported on the base frame (6). A sleeve (7) is provided at the bottom of the transport vehicle (5). The pin is fitted inside the sleeve (7). An anti-tipping bar (8) is rotatably installed on the front side wall of the transport vehicle. (8) is L-shaped. The middle of the long side of the anti-tipping bar (8) is hinged to the front side wall of the transport vehicle (5). The short side of the anti-tipping bar (8) is below the bottom frame (6) of the transport vehicle, and connects the transport vehicle (5) and the bottom frame (6) into one unit. An movable partition (9) is added in the middle of the transport vehicle, which divides the internal space of the transport vehicle into area A and area B. Area A is in front of the transport vehicle (5), and area B is in the rear of the transport vehicle (5). The volume of area B is cotα times the volume of area A, and the bottom length of area A is cotα times the bottom length of area B. α is the inclination angle of the stair passage. The sleeve (7) at the bottom of the transport vehicle is on the boundary line between area A and area B.

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