Arrangement method of flatness of main beam of single beam crane

Arrangement method of flatness of main beam of single beam crane.

The main beam of the single-girder crane is not flat, which directly affects the subsequent processing. First, we will process the flatness of the main beam before moving on to the next process. The time of sand blasting and plating will then make the product whiter and flawless. However, the structural characteristics of the main beams of different bridge cranes are different. We must first understand the following two points of the product:

The single beam lifts the material and the shape of the panel. (board, roll, shaped piece, ruler).

Dispose of the dimensions of the main beam and the surface of the single-girder crane (depending on the product, different flatness processes can be chosen to achieve cost and operability control), what leveling effect the main beam is to achieve, and the working environment of the beam. And the requirements for use (directly with the appearance or in an environment with high dust and humidity)?

Currently, there are two ways to handle the flatness of the crane's main beam (the gantry crane manufacturer):

The use of professional mechanical treatment is to remove the polished convex portion by cutting and plastic deformation of the surface of the material to obtain a smooth surface polishing method, and generally uses a grindstone, a polishing liquid or the like.

Chemical polishing, chemical polishing is to make the data in the chemical medium, the local convexity of the micro-protrusion is preferentially dissolved, so as to obtain a smooth surface. The main advantage of this method is that it can polish complex workpieces without complicated equipment and can polish many steel sheets simultaneously. The problem of chemical polishing is the application of polishing fluids and product materials. The surface roughness obtained by chemical polishing is usually 10 μm.

In the years of development, the use of single-girder cranes laid the foundation for the development of the industry. We believe that we will have a good performance in the future development. Quality has always been favored by everyone. We know that its daily maintenance is essential. Let us analyze the maintenance of the single beam crane.

1, a variety of limiters, check whether the limiter is sensitive and reliable

2. Raise the hook to the position. The distance between the hook housing and the reel housing should be greater than 50 m.

3. Lower the hook to the position and make sure that the wire rope on the ring is no less than 3 turns.

4. Whether the bumps at both ends of the I-beam can be safe and secure.

5. The travel mechanism stroke limiter is sensitive and can move quickly.

6. Check the motor and brake. There is no abnormal sound during the crane lifting process. No obvious abnormalities were found when the cart motor was running.

7. Check that the wire rope is safe and reliable. The wire rope is not twisted or worn; check the number of broken wires. If the scrapping standard is met, the new scrapping standard will be replaced. Check for wear and corrosion on the surface of the wire rope. When the corrosion amount of the surface of the wire rope is greater than 30%, it should be scrapped and replaced. New wire rope.