SU985227A1 - Arrangement for erecting archs - Google Patents

Description

(54) DEVICE FOR CONSTRUCTING AROKS

The invention relates to the construction industry and can be applied for the erection of arches of stone or similar material requiring high quality and accuracy of work.

The closest to the proposed technical essence and the achieved result is a device for the erection of arches, including a half circle in the form of a half ring with racks

The erection of the arch using such a circle is maintained in the design position from the n t to the castle on both sides simultaneously. It is advisable to build the arch from elements fitted to each other by the ends and contoured into the arch, simultaneously with the subsequent numbering to facilitate assembly on the circle. A necessary condition for ensuring the quality and productivity of erection is the exact equality of the inner radius of the arch and the outer radius circling on its working surface, but since ensuring this equality is technologically difficult, during the erection process it is necessary to fit either the arch elements on the inner radius or the radius of the working surface. In addition, when erecting an arch using a known device, it would inevitably deform under the weight of the arch (according to the standards, lowering the lock should not exceed 1/200 of the arch's arrow).

The deformation went round even within the allowable limits when erecting high-quality arches leads to the opening of the seams between the ends of the stone elements, which reduces the quality. To ensure the required level of quality, additional ends of stone elements have to be adjusted, which negatively affects productivity.

The purpose of the invention is to increase the production, quality and quality of the construction

20 arches.

The set point is achieved by the fact that in the device for the erection of arches., Which included spinning in the form of a paw. A piece with racks, a circle was provided with supports with flexible tension plates, and the racks were made in the form of jacks connected to base plates. spinning hinged.

In addition, flexible tensioning

Claims (2)

30 is equipped with pipes with bars attached to them, made of a surface deformable material. FIG. 1 shows a device with an arch assembled in a horizontal position and fixed on it; in fig. 2 shows section A-A in FIG. 1 in FIG. 3 shows a section B-B in FIG. 1 in FIG. 4 shows a section B-B in FIG. 2 on) 1ig. 5, node 1 in FIG. 1: in FIG. 6 I section of GG in FIG. 5. The device for erecting stone arches includes a flat semi-circular circle composed of channels 1 bent in the bow ring and connected between each other on top and bottom by sheets 2 and 3, to which rigid base plates are fixed. 4. Base plates are equipped with a flexible tensioning on catfish 5. with bolts b and through sulfur 7 pivotally attached to supports 8 placed on racks made in the form of hydraulic jacks 9, the pressure and drain cavities of which are interconnected by means of nozzles 10 and I. To prevent distortions at vertical In addition to the support 8, there are telescopic guides made up of glasses 12 and plungers 13. One of the plungers is threaded on the surface and provided with a nut 3.4. Hydraulic jacks 9 Istakan 11 12 are mounted on plates 15, supported by angle pairs 16 and 17, which serve for small movements of the entire device together with the arch assembled on it in a direction perpendicular to the design plane, the position of the arch. Tensors 18 are strung on tension straps with 5, to which sheets 19 are welded, with wooden bars 20 bolted to them, and dia. The meter on sa 5 is less than the inner diameter of the tubes 18, which ensures the latter can freely slide along the entire length of the sa. The circle was lined on one side with sheet rubber 21, preventing chipping of the corners of stone elements 22 with anchors 23. Stand 24 serves as a support during the assembly of the arch on the circle in a horizontal position. The device works as follows. After placing the elements 22 arcs on the circle according to the numbering, tightening the bolts 6 through the flexible one. sticking to c 5, the tubes 18 and the bars 20 in the joints of the elements, expansion forces are created. In this case, the arch as a whole rests on the support plates 4. Then it is circled with the arch in the direction shown in FIG. 2 with an arrow, rises to the design position. With the help of hydraulic jacks, as well as by moving the angles 16 relative to the angles 17, the alignment is performed and the installation is circled with the arch in the exact design position. After that, by moving the nuts 14 down until it stops, the device is fixed {to prevent the lowering circling with the arch if there are leaks in the glands of the working cavities of the hydraulic jacks), the anchors 23 are welded to the wall fixtures, set the formwork and make the cement with cement mortar. After the cement mortar has hardened, it is once uncovered: the bolts 6 are loosened, the working fluid is discharged from the working cavities of the hydraulic jacks 9 into the drain, T1 Removing the nuts 14 lowers the arch and brings it to a horizontal position. Such an embodiment of the device makes it possible to eliminate the fitting of the ends of the arch elements, the fitting of the arch according to the inner radius or circling on the working surface. The accuracy of arch processing along the inner radius does not affect the quality of the seams, is-. the opening of the seams from its own weight is included. All this allows improving the quality and productivity by 50-60%. Claim 1. Arrangement for building arches / including circling in the form of a half-ring with racks, characterized in that, in order to improve the performance and quality of construction, it is swirled with support plates with a flexible tension gage, and the racks are made in the form of jacks connected to base plates spinning hingedly. 2. A device according to claim 1, characterized in that the flexible tension device is equipped with tubes with bars attached thereto, made with a surface deformable material. Sources of information taken into account during the examination 1. Smirnov N.А. and others. Building technology, production. L., Stroyizdat, 1978, p. 198-199 (prototype). 23 V - 1SG Xi- - h ipua.Z fl / 2 - L (rig. 3