General Provisions
The transportation of equipment in the metro engineering project involves transporting the equipment from the ground to the installation location within the station.
Therefore, the problem of transporting equipment becomes particularly important, and it is necessary to develop a special plan for moving and lifting equipment and materials.
The low ceiling height and narrow construction site are prominent features of underground railway engineering. In the engineering of Harbin Metro Line 1 AFC system, the transportation of ticket machines and check-in machines is highly difficult.
Therefore, before transporting the equipment, a scientifically reasonable and operationally strong plan for transporting the equipment must be prepared to ensure the safety and efficiency of equipment transportation.
All 18 stations on Harbin Metro Line 1 are underground. The equipment installation position is located in the middle of the station lobby on the mezzanine, and the equipment is bulky and can only be lifted.
1. Transportation Arrangement of Equipment and Materials
According to the construction schedule, there are a total of 18 stations for transporting AFC equipment and materials, which is a relatively heavy and short-cycle task.
From the perspective of actual supply, products from the same manufacturer will be concentrated in a certain period of time, so all equipment transportation will be completed within this period.
2. Steps for lifting the AFC equipment on the ground
Based on the understanding of the transportation conditions of subway stations and the experience accumulated in transporting equipment during the construction of the AFC, our project team developed the following four steps for transporting equipment:
Step one: Transport the equipment by land vehicle to the location of the equipment lifting hole at each station. This is a necessary procedure in the equipment transportation process.
Step two: Use a crane to lower the equipment through the hole that reaches the ground. This is an effective method for transporting equipment.
Step three: Use a crane to lower the equipment to the station floor through the hole.
When the crane cannot reach the lifting point, vertical transport of the equipment is used. This method is used when AFC equipment is transported from the ground to the station mezzanine.
Step Four: Use manual forklifts to move equipment horizontally and position it precisely. Manual transport is used when the equipment cannot be transported to the station mezzanine using a crane.
All AFC equipment and materials can be transported to the required locations using combinations of the above steps.
Preparation for Transport
1. Personnel Organization
| Serial number | Personnel category and type of work | Amount | Main responsibilities |
| 1 | Group leader | Organizational command | |
| two | Deputy team leader | technical guidance | |
| 3 | security supervisor | Security monitoring | |
| 4 | Loading and unloading workers | 10 | Loading and unloading of equipment, handling |
| 5 | Crane operator | 1 | Crane driving and operation |
2. Preparation of Main Machines and Tools
| Serial number | Item | Specifications | Unit | Amount | Comments |
| 1 | Crane | 8T | To define | 1 | |
| two | Crowbar | L=1500mm | Parts | 4 | |
| 3 | walkie talkie | To define | 3 | ||
| 4 | Metal cable | φ10 ~ φ16 | Subway | Quantity according to actual needs | |
| 5 | U-shaped ring | 5T | Parts | 1 | |
| 6 | Sleeper | 300X200 | Parts | Quantity according to actual needs | |
| 9 | Protection equipment | Quantity according to actual needs |
3. Other preparation work
(1) Check whether the size, strength and equipment base of the equipment inlet channel meet the requirements for transportation and installation of the equipment. If there is a problem, resolve it first.
(2) Check whether the AFC equipment unloading location meets operational requirements and whether it needs to be leveled or reinforced.
(3) If working at night, sufficient lighting equipment must be prepared for the unloading site, transport channels and entry platforms.
(4) Before picking up the goods, please carefully check the name, model, specifications, quantity, box number, etc. of the equipment to be extracted based on construction drawings, equipment list and other information, and make a withdrawal list. Complete the procedures with the equipment supplier and agree on the delivery time.
4. Transportation Process
(1) Based on the weight, volume and quantity of the transformed AFC equipment, hoist the equipment onto the road trailer with a crane and secure it with straps. When loading the equipment, remove its chassis, wheels, etc., and place wooden planks under the bottom of the equipment as cushions.
(2) Drive the trailer to the equipment at a speed less than 20km/h. When traveling on a curved road, slow down to ensure safety.
(3) Lift the equipment gently onto the entry platform. Install the equipment chassis and wheels and use chocks to secure the wheels in place.
5. Safety Precautions
(1) Before lifting the equipment, a trial survey must be carried out to observe the strength and balance of the equipment. Only after confirming that it is safe and reliable can a formal withdrawal be carried out. The lifting capacity of the crane must have sufficient margin, and the strength and length of the cable must be checked and confirmed to meet the usage requirements.
(2) The falling speed of the equipment must be slow and constant. Operators must cooperate with each other under the unified command of the commander. Before the equipment lands, support and adjustment must be done to ensure that the equipment landing point is correct and accurate.
(3) When loading the equipment, pay attention to the carrying capacity of the transport vehicle, place the equipment in a suitable position, and secure it firmly with special ropes in four directions.
(4) When transporting the equipment, control the speed according to road conditions to avoid accidents.
(5) Pay attention when listening to and watching weather forecast programs and avoid working during thunderstorms.
III. Raising the ground of AFC equipment for the station mezzanine
(1) Verify that the station meets operational requirements. The entrance platform and station hall level must be prepared with sufficient lighting equipment.
(2) Check that the air duct opening is unobstructed and can accommodate the passage of equipment.
(3) Prepare wood and other materials for temporary covering of lifting holes in the station mezzanine.
1. Transportation Process
(1) Place the equipment where the crane can reach it.
(2) After stabilizing the crane outriggers, follow general lifting operation procedures.
(3) As soon as the equipment reaches the station mezzanine, immediately move the lifting position to ensure the continuity of crane operations.
2. The transportation schematic diagram is as follows:
3. Safety Precautions
(1) Understand and confirm whether the carrying capacity of the transportation channel meets transportation requirements.
(2) When using lifting equipment, first perform a trial lifting, observe the strength and balance of the equipment, and confirm whether it is safe and reliable before officially starting the lifting. The lifting capacity of the crane must have sufficient margin, and the strength and length of the wire rope must be inspected to confirm whether they meet the usage requirements.
(3) The falling speed of the equipment must be slow and constant. Operators must cooperate with each other under the unified command of the commander. Before the equipment lands, the support must be adjusted to ensure that the landing point and direction of the equipment are correct. Pay attention to weather forecasts and avoid working during thunderstorms.
4. Using a crane to lower the equipment to the station lobby level through a hole can be transported step by step;
(1) Check whether the station lobby floor meets operational requirements. And prepare enough lighting equipment.
(2) Prepare wood or other materials to temporarily cover the lifting hole at the station concourse level.
(3) Check and confirm whether the strength of the reserved lifting ring and concrete ceiling meets the lifting requirements (if necessary, tension tests are required). If the strength of the lifting ring or concrete ceiling does not meet the lifting requirements, reinforcing treatment or temporary lifting structures can be constructed. Install lifting devices, steel cables, etc.
5. Transportation process
(1) Cover the lifting hole at the station concourse level with temporary wooden planks.
(2) Use a manual forklift to drag the equipment to the lifting hole at the station concourse level, connect the wire rope to the equipment through a fixed pulley, and then tighten the wire rope through the crane. Leave the equipment hanging slightly above the ground and observe whether the lifting status is normal. Remove the temporary seal from the lifting hole at the station concourse level and continue to synchronize the crane operation to lower the equipment evenly.
When the bottom of the equipment reaches the level of the station lobby, stop descending. Quickly drag the equipment away from the lifting hole.
6. Safety Precautions
(1) Each component of the lifting installation, such as steel cables and chains, must pass strength inspection, and the tension of each part must be carefully calculated and analyzed, leaving a certain margin.
(2) When using lifting equipment, first perform a trial lifting, observe the strength and balance of the equipment, and confirm whether it is safe and reliable before officially starting the lifting. The strength and length of the wire rope must be inspected to confirm that they meet the usage requirements.
(3) The falling speed of the equipment must be slow and constant. Operators must cooperate with each other under the unified command of the commander. Before the equipment lands, the support must be adjusted to ensure that the landing point and direction of the equipment are correct.
(4) A designated person must command and supervise the lifting of the equipment and carefully observe the lifting situation of the equipment to avoid accidents.
(5) When equipment falls to the station lobby level, make sure it is placed in the correct direction. It may be necessary to rotate several times from the equipment entrance to the equipment foundation. If the initial direction is incorrect, it will cause many problems.
(6) When sealing the lifting hole at the station hall level, pay attention to stability. The wooden board must be strong and densely laid, and its strength must be able to support the weight of the equipment and have sufficient margin to avoid the danger of falling.
7. Other preparation work
Check whether the location of the station lobby meets operational requirements and prepare sufficient lighting equipment.
Eliminate obstacles in the transport channel. If there is a large height difference in the shipping channel stairs, construct a relatively flat transition section with lumber or sleepers.
8. When equipment needs to be moved over long distances, use a manual forklift.
Raise the equipment with a jack, insert the manual forklift into the bottom of the equipment and release the jack.
When the ground is relatively flat, the manual forklift can be pulled directly. When the ground is uneven and the hand forklift is difficult to roll, place wooden planks in the direction of movement of the hand forklift and pull the hand forklift.
When you arrive at your destination, use a jack to lift the equipment, remove the manual forklift and release the jack.
The transport scheme is as follows:
9. Safety Precautions
A dedicated person must command and supervise the transportation of the equipment, carefully observe the situation of the equipment to avoid unexpected phenomena such as lateral sliding of the equipment and free sliding along slopes.
When encountering a movement with a certain slope, anti-slip measures should be taken, and triangular wedges and other anti-slip articles should be prepared. When the slope is large, sleeper platforms can be used to reduce the slope.
Pay attention to the effective brake system of the manual forklift.
5. Manual handling plan
Due to the professional characteristics of the project and the actual situation on site, it is not possible to use a crane to lift the equipment.
The general contractor and our company jointly establish a special equipment transportation team, consisting of a team leader, deputy team leader, safety supervisor and loading and unloading workers.
The team leader should frequently inspect the moving work, the deputy team leader should always be at the forefront during the moving process and participate in commanding the moving work on site throughout the process.
The safety supervisor supervises the handling work at each station on site throughout the process and is directly responsible to the team leader. If any safety hazards are found, the safety supervisor has the right to stop work and issue a stop work order.
1. Personnel organization
| Serial number | Personnel category and type of work | Position | Main responsibilities |
| 1 | group leader | Organizational command | |
| two | Deputy team leader | Technical guidance | |
| 3 | security supervisor | Security monitoring | |
| 4 | Loading and unloading worker | 10 | Equipment handling |
3. Main equipment configuration
| Name | Specification and model | Amount | Company | Comments |
| hydraulic forklift | 3T | 1 | To define | |
| Crowbar | L=1500mm | 4 | Parts | |
| hand hammer | 5 pounds | two | Parts | |
| Punch | two | Parts | ||
| Protection equipment | Quantity according to actual needs |
3. Equipment model
| Name | Specification and model | Weight | Amount | Unit | comments |
| television | 1806*920*850 | 400kg | 1 | To define | |
| AG | 1078*1992*300 | 175kg | two | To define |
4. Investigation before handling
To ensure that there is a designated unloading area and that the equipment can be transported to the site in a timely manner upon arrival, our company will conduct a detailed investigation with the general contractor before the equipment arrives at the station.
The investigation includes decorating the lobby floor, confirming that the ground floor and ceiling of the lobby equipment area have been completed and that there is an equipment storage area in the lobby that does not hinder the construction of other units.
The investigation also includes ensuring that conditions exist for transporting equipment from outside the station to the atrium, and that equipment can be transported downwards from the entrance and exit; ensure the safety of personnel and equipment during transport; and investigate whether there is a temporary storage area for equipment after it is unloaded outside the station.
5. Technical and security measures
(1) Investigate the unloading environment, handling route and placement position of equipment in the lobby before unloading and handling to make sufficient preparations.
(2) Ensure that there are sufficient handling personnel and avoid work overload. Protection personnel must participate throughout the process.
(3) The loading capacity of the forklift used for unloading must meet the weight requirements of the equipment and must not be operated while sick.
(4) Lifting ropes and bars must be tight and securely tied.
(5) Sufficient lighting tools shall be provided to meet the needs of the building.
(6) Safety protective equipment must be used.
(7) All obstacles along the handling route must be eliminated before construction.
(8) During the lifting process, the equipment must be lifted and placed carefully to avoid damage to the equipment and other professional products.
(9) The command must be unified and orderly during the handling process.
6. Dealing with organization and protection measures
(1) Discharge:
First, organize the moving personnel to ensure that the unloading work is unified and organized. At the same time, unloading personnel must wear work gloves and take effective safety measures.
During unloading, each step (including landing and moving equipment) must be ensured to present no safety hazards before proceeding, to prevent personnel from being crushed, bumped or struck, and to prevent damage to equipment.
During unloading, the team leader or deputy leader must participate in the command throughout the process, and the safety supervisor must be responsible for safety supervision. If any unsafe factors are found, work must be stopped immediately.
(2) Handling:
Before handling equipment, the handling route must be thoroughly inspected and obstacles along the route must be eliminated. Lift cables should be checked for broken wires and can fully support the weight of the equipment.
The firmness of the binding must also be confirmed before lifting. Furthermore, the stability of the lift bar must be checked for any safety hazards. Several people must be used for lifting during the handling process.
Two people must stand next to the equipment to provide protection, while one person is responsible for command.
The command must be unified. During lifting, equipment must be lifted and placed carefully to avoid damage to equipment and other professional products. When putting on the equipment, attention must be paid to the feet to avoid leg injuries.
Only after a unified command can personnel bend down to place the equipment.
7. Equipment installation:
Construction methods, technical requirements
(1) The appearance of the equipment must be free from damage such as peeling paint, impacts, etc., and there must be no damage to equipment, modules, meters, etc.
(2) Equipment loading and unloading operations must be strictly in accordance with national regulations.
(3) Transportation and loading and unloading of the product must strictly follow the product installation and use instructions.
(4) During lifting of the equipment, no or other equipment is allowed under the equipment.
(5) The equipment must be securely tied with steel cables and retractable cable ties during transportation.
(6) There must be anti-theft measures for the storage of equipment and materials, and a dedicated person must be set up to keep watch or protective fences must be installed.
(7) Contractors are required to notify station supervisors and construction units to pay attention to equipment protection.
8. Protection of the finished product
(1) After the equipment installation is completed, protect it with the original packaging, wooden box or plastic sheet.
(2) Install warning protection strips around the equipment after installation is completed.
(3) Send personnel to carry out daily inspections after equipment installation is completed, check for damage or theft, and immediately deal with any problems found.
