Tower crane slewing bearing washer spraying protective device

Abstract

The invention discloses a tower crane slewing bearing washer spraying protective device. The tower crane slewing bearing washer spraying protective device comprises at least two protective blocks (3) which are put together to form an annulus; the top surface of each protective block (3) is provided with at least one handle (4), and the bottom surface of each protective lock is provided with a cylinder (5); there is a one-to-one correspondence between the number and the positions of the cylinders (5) and bolt mounting holes (6) formed in a slewing bearing washer (1), and the cylinders are in interference fit with the bolt mounting holes formed in the slewing bearing washer. The cylinders of the protective blocks are in interference fit with the bolt mounting holes formed in the slewing bearing washer, the protective blocks are attached to the surface of the slewing bearing washer, the surface of the slewing bearing washer and the bolt mounting holes are completely protected, and the protective effect can not be affected when spraying and turning over are conducted.

Description

technical field [0001] The invention relates to a spray protection device, which is especially suitable for the slewing ring of the tower crane. Background technique [0002] The installation and maintenance instructions of the slewing bearing used in the tower crane clearly stipulate that: before installation, the installation reference surface and the installation plane of the slewing bearing must be cleaned to remove oil, burrs, paint and other foreign matter. Such as figure 1 As shown, the slewing bearing gasket is the installation plane of the slewing bearing, so it needs to be protected before spraying paint. Since the slewing bearing gasket is a plate with a large radius, and other parts except the slewing bearing gasket cannot be blocked, so the current slewing bearing gasket is sprayed. Generally, stickers and butter are used for protection. Glue is used to paste a layer of stickers on the surface of the slewing bearing washer. The surface of the protective slewing...

AI Technical Summary

Problems solved by technology

[0003] The above method can also protect the slewing bearing washer when spraying paint, but it has the following disadvantages: 1. Long working hours are required and the efficiency is low: since the sticker can only be pasted on the surface of the slewing bearing washer, the rest needs to be painted, so the sticker needs to be Completely cover the upper surface of the slewing bearing gasket, and need to remove the excess part, which is cumbersome and the cleaning effect is not good; after the paint is sprayed, since the sticker is pasted with glue, it will also take a long time to completely remove the sticker, which is time-consuming and laborious

[0004] 2. The surface of the slewing bearing washer can be pasted, but there are many ribs in the structure under the slewing bearing washer, which cannot be pasted. There is no protection for the bolt mounting holes of the slewing bearing washer, and the protection effect is poor.

[0005] 3. During mass production, the progress of paint spraying and assembly is limited, which limits the efficiency of mass production

[0006] To sum up, the conventional method of stickers, applying butter and removing stickers or butter is time-consuming, and the protective effect is not good

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