SU1366614A1 - Forms for lining gas ducts - Google Patents

Abstract

The invention relates to the construction and can be used in the lining of gas ducts, the erection of vaults of thermal and chemical units. The purpose of the invention is the expansion of technological capabilities and reduction of labor costs for lining works. To achieve this goal, the shuttering shield 1 is made in the form of a coil spring and is equipped with fur

Description

the height of the adjustment of its diameter, consisting of folic chains 4 and ve- 5 stars. The supporting formwork elements consist of a threaded horizontal screw-9 with nuts, which are pivotally connected to the rods and strips 15. The lining is laid on the surface of the shield 1 and

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using its correction mechanism, they press the lining layer against the lined surface. After the lining has hardened by rotation of the screw 9, the diameter of the supporting elements is reduced, and then the shield 1, and the formwork is moved to the next process lock. 3 il.

The invention relates to the construction and can be used in the lining of gas ducts, the erection of vaults of thermal and chemical units.

The purpose of the invention is the expansion of technological capabilities and reduction of labor costs for lining works.

FIG. 1 shows a formwork for lining ducts, a general view of FIG. 2 is a view A of FIG. 1, in FIG. 3 view B in FIG. 2

The formwork consists of a spiral spring 1 with a slot 2, a guide 3, roller chains 4 fixed along slot 2 and in contact with sprockets 5 mounted on shaft 6 with a stopper 7, and a housing 8 fixed on the surface of the outer coil of spring 1. Supporting the elements include a horizontal screw 9 with nuts 10 and 11, having right and left threads, on which are hinged the sleeves 12, in which the bolts 13 fix the rods 14, hinged to the ends of the strips 15 in contact with the surface of the inner ring of the spring 1. The sleeves 12 with the rods 14 are supported by the stops 16.

After the lining is installed, a spring 1 is installed in the lower part of the duct body inside it and is diluted by rotating the shaft 6 with Asterisks 5 mounted on it, which, in contact with chains 4, move the coils 1 relative to each other, increasing its diameter . After dilution of the spring 1, supporting elements are installed in it, in which

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the rods 14 with the strips 15 are fixed at the required radius by bolts 13 in the bushes 12. The spring 1 is lined up to the contact of the surface of the inner turn with the strips 15 and the resulting surface, which has been greased with grease. After the liner has hardened, turning the screw 9 will remove the nuts 10 and 0 11, while the sleeves 12 with the rods 14, installed perpendicular to the surface of the spring 1, are set at an angle to each other and, by reducing the external diameter of the supporting elements, allow them to be removed from the spring Then the spring is pulled out and removed from the flue or moved to the next process lock.

Claims (1)

Claim 1 The formwork for lining gas ducts, which includes the formwork shield and supporting elements, is so that, in order to expand technological capabilities and reduce labor costs for the lining works, the formwork is equipped with a formwork mechanism consisting of a shaft with sprockets and roller chains in contact with them, mounted on the back of the formwork panel, and the panel is made of a coil spring with free ends and a slot, 35 along which the chains are fixed, and the supporting elements are made in vi,. de horizontal screws with nuts vertical rods pivotally connected with plankami. " 20 thirty but