CN204429555U - Tower crane rotation supporting bead jet printing protecting device - Google Patents

Abstract

The utility model discloses a spraying protection device for a slewing support washer of a tower crane, which comprises at least two protection blocks (3) which are joined together to form a ring; the top surface of each protection block (3) is provided with at least one handle (4). , there are cylinders (5) evenly distributed on the bottom surface; and the number and position of the cylinders (5) correspond one-to-one to the bolt mounting holes (6) on the slewing bearing washer (1), and are interference fit. The cylinder of the protective block and the bolt mounting hole of the slewing ring are interference fit, and the protective block is closely attached to the surface of the slewing ring to fully protect the surface of the slewing ring and the bolt mounting hole, and the protection effect will not be affected when the spraying is turned over.

Description

Tower crane slewing ring washer spray protection device

technical field

The utility model relates to a spraying protective device, which is especially suitable for a slewing support washer of a tower crane.

Background technique

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. As shown in Figure 1, the slewing ring gasket is the installation plane of the slewing ring, so it needs to be protected before spraying paint. Since the slewing ring gasket is a large radius plate, and other parts except the slewing ring gasket cannot be blocked, so the current slewing ring Spray protection of support washers generally adopts stickers, smearing butter and other methods. Glue is used to paste a layer of stickers on the surface of the slewing ring washer, and the surface of the protective slewing ring washer is sprayed with paint. Clean up.

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 To completely cover the upper surface of the slewing bearing gasket, it is cumbersome to remove the excess part, 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.

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.

3. During mass production, the progress of paint spraying and assembly is limited, and the efficiency of mass production is limited.

To sum up, in conventional methods, it is time-consuming to stick stickers, apply butter, and remove stickers or butter, and the protective effect is not good.

Contents of the invention

In view of the above existing technical problems, the purpose of this utility model is to provide a reusable and easy-to-operate tower crane slewing bearing washer spraying protection device, which greatly reduces the man-hours of slewing bearing washer spraying protection and improves the protection effect at the same time.

In order to achieve the above purpose, the utility model provides a protection device for spraying the slewing bearing gasket of a tower crane, which includes at least two protection blocks, which are jointly assembled into a ring; the top surface of each protection block is provided with at least one handle, and the bottom surface is evenly distributed. Cylinders; and the number and position of the cylinders correspond to the bolt mounting holes on the slewing ring washer one by one, and are interference fit, and the cylinders are inserted into the bolt mounting holes of the slewing ring washer during use. The protective device is inserted into the bolt mounting hole of the slewing bearing washer, and the protective block is closely attached to the surface of the slewing bearing washer, and the protective effect will not be affected when the spraying is turned over.

Further, the two ends of the protective block are provided with opposite step structures, so that two adjacent protective blocks can be matched end to end. The stepped fit between the protective blocks can ensure the protective effect even if the two ends are worn for a long time.

Preferably, two handles are symmetrically arranged on the top surface of each protective block. It is convenient to install and remove the protective block.

Preferably, there are four protective blocks with the same structural shape.

Further, the front end of the cylinder is provided with chamfers.

Preferably, the protective block is made of rubber.

The utility model has the following advantages: 1. Easy to use: before spraying the slewing bearing washer, the protective blocks are connected from end to end and installed on the surface of the slewing bearing washer in turn, which is convenient and quick to install and dismantle.

2. Good protection effect: the cylindrical body of the protective block and the bolt mounting hole of the slewing bearing gasket are interference fit, and the protective block is closely attached to the surface of the slewing bearing washer, so as to fully protect the surface of the slewing bearing washer and the bolt mounting hole, and it will not be affected when the spraying is turned over protective effect.

3. Reusable: After protection, remove the protective block and store it properly. It can be used repeatedly for a long time, and the protective effect can be guaranteed.

4. Making multiple sets of this protective device can improve the efficiency of spraying and assembly during production.

Description of drawings

Figure 1 is a schematic structural view of the slewing bearing washer;

Figure 2 is a schematic diagram of the implementation of the utility model;

Fig. 3 is a schematic structural view of the protective block in Fig. 2;

In the figure: 1. Slewing ring washer, 2. Protective device, 3. Protective block, 4. Handle, 5. Cylinder, 6. Bolt mounting hole.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 2 and 3, the utility model includes four protective blocks 3, which are made of rubber and have the same structure, and are assembled into a ring together. The top surface of each protective block 3 is symmetrically provided with two handles 4, the bottom surface is evenly distributed with cylinders 5, and the front end of the cylinder 5 is provided with chamfers, and the number and position of the cylinders 5 are consistent with the bolts on the slewing bearing washer 1. The mounting holes 6 are in one-to-one correspondence and are interference fit. The two ends of the protective block 3 are provided with opposite step structures, so that two adjacent protective blocks 3 can cooperate end to end.

Before the upper and lower supports are sprayed, install a set of protective device 2 made of rubber on the slewing bearing washer, and insert the protective block 3 bottom cylinder of the protective device 2 into the bolt installation hole 6 of the slewing bearing washer 1, and the protective block 3 is connected to the slewing ring. The surface of the support washer 1 is close to each other, and the protective blocks 3 are fitted in steps. After the paint is sprayed, when the slewing bearing needs to be installed, the protective device 2 can be removed. It is easy to use, has good protective effect and can be used repeatedly.

Through the application of this technology, the spraying protection effect of the slewing bearing washers of the upper and lower supports of QTZ63EA is significantly improved, and the process time of spraying protection of the slewing bearing washers is reduced by 95%. Other products can also take advantage of this patented technology.

Claims (6)

1. A tower crane slewing ring gasket spraying protection device, characterized in that it includes at least two protection blocks (3), and together form a ring; the top surface of each protection block (3) is provided with at least one handle (4 ), the bottom surface is evenly distributed with cylinders (5); and the number and position of the cylinders (5) correspond to the bolt mounting holes (6) on the slewing bearing washer (1) one by one, and are interference fit. 2. A tower crane slewing bearing gasket spray protection device according to claim 1, characterized in that, the two ends of the protection block (3) are provided with opposite step structures, so that two adjacent protection blocks (3) End to end cooperation. 3. A tower crane slewing bearing gasket spray protection device according to claim 1 or 2, characterized in that, two handles (4) are symmetrically arranged on the top surface of each protection block (3). 4. A tower crane slewing bearing gasket spraying protection device according to claim 1 or 2, characterized in that there are four protection blocks (3) with the same structural shape. 5. A tower crane slewing bearing gasket spray protection device according to claim 1 or 2, characterized in that, the front end of the cylinder (5) is provided with chamfers. 6. The spray protection device for the slewing bearing gasket of the tower crane according to claim 1 or 2, characterized in that, the protection block (3) is made of rubber.