SU143702A1 - Core to mold for the manufacture of hollow, preferably cylindrical products - Google Patents

Description

Cores to molds for making hollow, preferably cylindrical, products are known, including a housing and a vibrator. In this case, first install the external connector formwork, then the reinforcement cage and vibrating core, turn on the latter and serve the concrete above. At the end of the concreting process, the vibrating core is removed with the help of lifting mechanisms, the outer formwork is removed and the resulting product is heat treated. It is also known to use in the manufacture of cavities in reinforced concrete products devices that protect the finished part of the product from sliding in the process of concreting their subsequent sections.

However, when using known cores to molds for the manufacture of hollow products, the manufactured products are not of sufficiently high quality. The core to hollow-molds made according to the invention is free from this disadvantage. The essence of the invention is that the core body is made up of separate parts separated by an elastic gasket. A separate vibrator is installed in each of these parts.

Figure 1 shows schematically the proposed core to the form for the manufacture of hollow products.

The described core consists of the upper part / and the lower part 2, the vibrator 3, the vibrator 4, the elastic gasket 5 and the bolts 6, with which the parts 1 to 2 are connected to each other. The core is two-stage, upper part / 1100 mm high, with an upper diameter of 1060 mm and lower diameters of 1040 mm equipped with a vibrator 3 and connected to the lower part 2 of a strictly cylindrical shape with a diameter of 1040 mm and a height of 1000 mm with the help of bolts 6 by means of an elastic gasket 5 15 mm thick. The bottom part 2 has its own vibrator 4, a cone 8 with a lifting bracket 9 is attached to the top part / bolted 7.

No. 143702-2 Each vibrator has a separate power supply, which allows one part of the core to be put into operation independently of the other or both parts together, depending on the concreting stage. During operation, one half of the external formwork is installed, then the reinforcement cage of the casing and the vibrating core, the second half of the formwork is put in and locked with locks. Both stages of the vibrating core are turned on, concrete is fed from above and the first position 2 meters high is concreted. After that, the vibrating core is switched off and raised by a crane 1 m upwards. The top stage of the core is turned on, and concreting continues. During concreting, the vibrating core is kept on the weight by the crane, after finishing the concreting of the second position, the core is switched off and back up by 1 m, the third position is concreted, and then the subsequent position, after which the vibrating core is removed, and the finished product remains in the outer formwork shell

The lower stage of the core is turned on only when concreting the first position, later it serves only to protect the lower concrete part from possible concrete creep during concreting of the following positions.

Subject invention

The core to the form for the manufacture of hollow, predominantly cylindrical, products, including a housing and a vibrator, characterized in that. that, in order to improve the quality of manufactured products, its body is composed of separate parts separated by an elastic gasket, each of which has a separate vibrator.