Steps of installation and construction plan of electric single beam crane

The installation of the electric single-beam crane is related to whether the crane can have a low failure rate in the future operation. In order to ensure the smooth progress of the crane installation work, the construction must be carried out in a planned, organized, and step-by-step manner, so that each operator can do it. Know it well. The editor of our factory introduces the installation and construction plan of the electric single-beam crane for your reference:

1. Preparation before single beam crane installation

(1) Selection of installation site

The installation site should have enough area to meet the needs of the installation flip and hoist, and the site should have a power source to prepare for the connection of welding machines and other electric tools.

(2) Preparation of equipment and tools

This construction period requires 2 sets of welding machines, 2 sets of oxygen and acetylene, 2 sets of chain hoists, a wooden ladder, a spreader and a crane.

(3) Preparation of materials

The steel rails, pressure plates, splints, bolts, plates used for making car gears, and materials and welding rods for sliding lines used in this project should be adequately prepared according to actual needs.

(4) Staff arrangement

Participants of this project: 1 electrician, 1 fitter, 1 riveter, 1 welder, 1 lifting worker, and 1 safety/responsible person.

2. Basic safety requirements during single beam crane installation

The construction personnel participating in this phase of the project strictly abide by the safety operation regulations of each type of work, and illegal operations are strictly prohibited. 3. Installation process

(1) Installation of track

①Clean up the site first, and check and accept the cement bearing rail and beam foundation of the crane.

②Leveling and laying out the line.

③ Inspection and straightening of rails, upper position of rails, connection of rail joints, alignment and reinforcement, measurement inspection, leveling and straightening.

④For the installation of the vehicle gear system, the track installation standard must comply with the TJ231-78 "Mechanical Equipment Installation Engineering Construction Acceptance Specification", the difference between the highest point and the lowest point of the full stroke is not more than 10mm, and the left, right and top three sides of the joint The offset should not be greater than 1mm, the joint gap should not be greater than 2mm, and the span deviation should not be greater than 5mm. The relative difference in elevation of two parallel tracks at the same span should not be greater than 10mm at the column and no greater than 15mm at other places.

(2) Installation of sliding wire

The contact surface of the slip line should be flat, straight, free of corrosion, good electrical conductivity, and properly installed. Compensation devices should be provided when crossing the expansion joint of the building. The power supply slide line is painted with red paint on the non-conductive contact surface, and safety signs or indicator lights indicating live electricity are installed at appropriate positions. For example, when installing a safety cable, it should be straight and conductive. For example, when a flexible cable is used for power supply, the wire number should meet the requirements and a traction rope should be provided.

(3) Installation and erection of crane bridge

Before installation, you should open the box together with the representatives of the entrusted installation unit and the manufacturing unit, and check and check whether the delivered goods are consistent with the number of parts listed in the packing list according to the random packing, and whether the random documents are complete. After the check is completed , Make a record, and sign on the spot by the representatives of the three parties. When assembling and erecting the bridge, all participating construction personnel strictly abide by the safety operating procedures of each type of work, and illegal operations are strictly prohibited.

When assembling the crane, put the bridge frame on the cushion frame according to the working position. After it is firmly fixed, assemble the end beam and measure the diagonal difference. The diagonal difference should not be greater than 5mm and the span should not be greater than 3mm. Electric hoist, the running clearance of the trolley should not be greater than 5mm, and finally assemble the control room.

Before installation, you should be familiar with electrical schematic diagrams, wiring diagrams, electrical general diagrams and related technical materials, and understand the operating principles and the functions of various components. In order to accurately install and quickly deal with problems that occur during the installation process. Check that the ground resistance of each electrical component and motor should not be less than 0.8 megohm. In a humid environment, it should be no less than 0.4 megohm. Check whether the lines are correct and confirm that there is no error rate before powering on for trial operation. During the trial operation, check whether the running directions are consistent, whether the travel switch meets the required direction, and whether the upper and lower power-off limiters are safe and reliable. All safety devices must be safe and reliable before they can be hoisted and erected. During the hoisting process, strictly abide by the safe operation regulations and strictly prohibit illegal operations.

4. The live shell and electric wires of the crane should be reliably grounded, and the grounding resistance of the voie de grue and any point on the crane should be greater than 4 ohms. The repeated grounding resistance is not more than 10 ohms. The insulation resistance of the main circuit and control circuit to the ground shall not be less than 0.8 megohm.

5. After the crane is qualified for trial operation, it shall be subjected to no-load test, static load test, and dynamic load test . After passing the self-inspection, carefully fill in the completion report, notify Party A, organize the acceptance by the relevant departments, and deliver it to use after passing the test.

Because the installation of electric single-beam cranes has a certain degree of professionalism, our factory will provide installation services for enterprises, and enterprises can choose whether they need it according to their own conditions. The large-scale tools and equipment that need to be used in the installation process generally need to be prepared by the enterprise, because the installation master is not convenient to carry.

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