CS257104B1 - Device to prevent dilatation of bandages during installation - Google Patents

Abstract

The device for preventing expansion of boiler casings solves the connection of boiler casing beams using a supporting pin equipped with a cam fitting into oval holes, thereby achieving a non-yielding mutual suspension, but after moving the pin to the second position allowing expansion of boiler casings as required by the expansion conditions of the boiler. The device is advantageous to use when assembling steam boilers with membrane walls of heating surfaces

Description

BACKGROUND OF THE INVENTION The present invention relates to a device for preventing dilatation of a boiler band during assembly by means of a dual purpose pin and oval holes.

Until now, a solution is known that prevents mutual expansion during assembly. tight bandage connection. Auxiliary beams placed above the upper bandage and under the lower bandage and interconnected by threaded rods serve for the connection. The nut secures the rigid position of the horizontal beams by the boiler bandage.

The disadvantage of the known solution is the considerable consumption of auxiliary disposable material, the costs associated with the production, as well as the increase in the labor of assembly.

The essence of the device for preventing dilatation of the boiler band according to the invention is that the support pin provided with the cam fits into the oval opening in the vertical beam, thereby creating a fixed non-detachable suspension of the bandage. The advantage of using the solution according to the invention is to provide a stable position, which allows hanging of lower lying vertical and thus horizontal beams to the highest placed beam, without any additional requirements on the provisional, what. it will reduce material intensity and labor in manufacturing and assembly.

In the accompanying drawings, two examples of use and the use of the suspension of vertical beams are shown, in Fig. 1A the side elevation, Fig. 1B, Fig. 3A, and Fig. 3B, the section in which the connection is prevented Fig. 2B shows a side view of the boiler band during the assembly and in Fig. 2A, in Fig. 2B in the side view, in Fig. 4A and in Fig. 4B in the section the released expansion during operation of the boiler.

An oval hole is made in the vertical beam 2 during manufacture. The same hole is made in the suspension handle. In the second hinge bracket 3, a circular hole for the cylindrical bearing pin 4 is drilled. In the part engaging the oval holes in the hinge handle 1 and the vertical girder Z, the cylindrical cross-sectional support pin 4 has a cam which serves as a dilatation prevention function. In order not to spontaneously displace the support pin 4, its position is secured to one side by a washer 5 and a cotter pin 7. On the other hand, the position is stabilized by means of a spacer tube S of the washer 9 and secured by a split pin.

Upon completion of the assembly, i.e. when it is no longer necessary to exclude the dilatation, it is released as follows: The cotter pin 8 and the washer 9 are withdrawn, the spacer tube B is removed, which has already fulfilled its task and is no longer needed. Replace the washer 9 and secure with the cotter pin 8. The support pin 4 is moved in the "K" direction so that the support pin cam extends out of the oval holes in the vertical beam 1 and in the hinge handle 2. Rotate the extended support pin 4 o ISO3 cam it ceases to fulfill its basic function, preventing dilatation and becomes a safeguard against arbitrary axial movement of the bearing pin.

The invention can be advantageously used in the installation of steam-boilers with membrane walls.

Claims (1)

predmetvynálezu Device for preventing dilatation dilatation by the fact that in the oval opening there is a boiler mounting during the mounting, which is located by a pin (4) equipped with a cam engaging on the boiler bandage through the oval holes in the hanging ear (1) of the outer ear with oval holes marked and vertical beam (2).