SU1618852A1 - Travelling forms - Google Patents

Description

one

(21) 4632896/33; 4632897/33

(22) 01/09/89

(46) 07.01.91. Bul № 1

(71) Kuibyshev branch of the All-Union Institute for the design of the organization of energy construction Orgenergostroy

(72) H, R. Jansufin

(53) 69.057.528 (088.8)

(56) Resilient formwork for the construction of a protective shell. - Energy construction, 1985, N 2.

(54) POSTABLE FORMWORK N.R. Janusushina

(57) The invention relates to construction and is intended primarily for concreting a cylindrical structure, in particular for concreting the shell of an NPP reactor compartment. The purpose of the invention is to increase labor productivity and improve the quality of concrete placement, working conditions and safety. The formwork contains sectors 1, connected by flanges and side plates 3 to the frame ring. The upper 5 and lower 6 seams of sectors 1 are interconnected by paired vertical guides 7 and 8. Hydraulic cylinders 10 and 14 are located in guides 7 and 8, respectively. Vertical guides 7 and 8 are equipped with additional sliders 43 connected to upper sliders 11 and 15 with the help of rods 44. 1 h, p. f-ly, 9 ill.

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The invention relates to construction and is intended primarily for concreting cylindrical structures, in particular for concreting the shell of a reactor compartment of an NPP.

The purpose of the invention is to increase labor productivity, improve the quality of concrete laying, working conditions and safety.

Fig. 1 shows a peremeshna self-lifting suspended on a cylindrical structure, for example at the reactor compartment of a nuclear power plant, formwork, general view; in fig. 2 - the same, top view; in fig. 3-6 - section A-A in FIG. 1 (the kinematics of the location of the formwork component nodes are shown); in fig. 7 is a fragment of the frame ring and the connection of the frame sectors to the frame ring; in fig. 8 is a section BB in FIG. one; in fig. 9 — node I in FIG. eight,

Perestavnaya self-climbing formwork contains sectors 1, connected with flanges 2 and side plates 3 into frame ring 4, Sectors 1 are made of channel beams. The upper 5 and lower 6 CA sectors 1 are interconnected by paired vertical guides 7 and paired vertical guides 8 at the junction of sectors 1, in addition, the top 5 and lower 6 cables are reinforced by diagonal braces 9, B paired vertical guides 7 hydraulic cylinders 10 are located, the upper part of which is attached to the sliders 11, installed in the upper part of the paired vertical guides 7 and having a limited stroke fe, C due to the stops 12, the lower part of the hydraulic cylinders 10 is attached to the axis 13, installed ennym fixedly v.sparennyh vertical guides 7, paired vertical guides 8 mounted hydraulic cylinders 14 which verhne part attached to the slider 15, the bottom - to the sliders 16, the sliders 15 and 16 stroke is limited. lugs 17. The upper part of the vertical guides 8 is equipped with stationary grippers 18 with two spring-loaded clamps 19 and movable (grippers) grippers 20 mounted on sliders 16. Shutters 21 made of sheet and profile

steel with lugs 22 in the lower part, with the help of levers 23 pivotally connected with the lower sliders. Moreover, the lever 23, which passes along the axis of symmetry, has a turn only in the radial plane, and the remaining levers 24 have a free turn. Vertical joints 25 of the formwork panels 21 are fitted with bushings 26 arranged

at equal distances from each other, and made with blue holes, into which the loose bolts 27 are installed, a metal seal 28 of the tee section, made of a thin steel sheet, and two elastic seals 29 located between the vertical walls of the shuttering boards are mounted on them

0 21 and the walls of the metal seal 22.

Two shoulders brackets 30, located in the radial direction and at equal distance from each other, are attached to the lower and center b frame ring 4, the shoulders of the brackets 30 are provided with centering rollers 31, and the outer side with supporting rollers 32 mounted on horizontal axles x 33 located: radially and serving for the installation of scaffolding 34.

Through movable 20 and stationary 18 grippers, two-legged strings 35 are passed, provided with support brackets 36 arranged at equal distances in height.

The strings 35 are fastened in the upper part on height-adjustable hangings.

0

Skah 37, mounted on brackets

38, installed on the arc cage of the reactor compartment shell,

i On the outer side of the frame ring 4 is attached annular pad 39,

5 is made with a fence composed of prefabricated sector pads 40 with hatches 41 and covers 42.

The paired vertical guides 7, 8 are equipped with additional crawlers Installed above the lower ones by themselves 6, and connected to the upper main sliders 11 and 15 by means of two parallel rods 44, the travel of the sliders 43, 15 and 11 with the rods 44 is limited by upper stops 12, 17 and 45, mounted on the upper 5 and lower 6 along the sugar ring 4, brackets 46 are attached to the upper and lower parts of the shuttering panels 21, covering

The upper 5 and lower 6 of the frame rings 4. On the upper part of the shuttering boards 21 are made a series of eyes 47, pivotally connected by means of the lever 23 and 24 with the upper sliders 11 and 15, thus forming a parallelogram system.

The formwork works as follows.

Oil is pumped from a pumping station (not shown) into the piston cavity of the hydraulic cylinders 10 and 14. The rods of the hydraulic cylinders 14 are moved down by the amount q with the movable gripping device 20 before supporting the spring-loaded clamps 19 on the support brackets 36 of the strings 35. In connection with the cessation of movement of the rods of the hydraulic cylinders 14 in the hydraulic system, pressure occurs and the hydraulic cylinders 10 and 14 move the upper 11, 15 and - lower 43 sliders associated with rods 44. While moving the upper 11, 15 and lower 43 sliders by the amount of 5, the levers 23 and 24 are output from

dead zone, upon further movement of 11, 15 and 43 sliders by the amount C, the shuttering boards 21 are separated from the concrete surface, while the pressure in the hydraulic system drops to almost 0, and when the upper sliders 11 and 15 come into contact with the stops 12 and 17, the pressure in the hydraulic system the rods of the hydraulic cylinders 14 also increase the movable gripping device 20, which, resting on the support bracket 3b of the string 35, lifts the frame ring 4 with the formwork panels 21 and the annular platform 39 by d + e. In this case, the lower spring-loaded clips 19 stationary gripping devices 18 must be higher by the amount e of the support brackets 36 strings 35.

Then, the oil is drained from the hydraulic system, the frame ring 4 with the shuttering panels 21 and the annular pad 39 is lowered by a value of 6, and the pyrotechnic with the upper spring-loaded clips 19 of the stationary gripping device 18 to the support bracket 36 of the strings 35.

When oil is supplied from the hydraulic system to the rod cavity of the hydraulic cylinders 10 and 14, all the sliders 11, 15 and 43 begin to descend before the shuttering panels 21 come into contact with the concrete surface, the resulting resistance leads to an increase in pressure in the system,

as a result, the movable gripping device 20 rises by an amount a + d + 6 to stops 48. Upon further movement of the cylinder rods 10 and 14, overcoming the resistance of the formwork shields 21 connected by a parallelogram system, the sliders 11, 15 and 43 move by an amount with . 3 this moment, the top 5 and bottom 6 are the most stretched. Upon further movement of the sliders 11, 15 43 by the value of b (beyond the dead zone), the formwork shells 21 will not spontaneously move away from the concrete surface.

Claims (2)

Invention Formula 0 five five 1, Retrofit formwork containing sectors, annular removal of shielding with fencing and hatches, formwork boards, characterized in that, in order to increase productivity, improve the quality of concrete laying, labor conditions and safety, the formwork is equipped with hydraulic cylinders, 0 sliders, stops motionless and movable grippers with spring-loaded latches, metal seals of the T-section, elastic seals, two-shouldered brackets and two-branch strings with support brackets, and the formwork sectors are made in the form of frames with lower and upper frames connected by means of intermediate and end paired vertical guides, while the cylinders in the end vertical guides are attached to the lower and upper parts of the sliders, the course of which is limited by stops, and in intermediate verticals the bottom guides are attached to the sliders with stops, and the top cylinders are fixed to the guide rails through the axis, with the formwork panels hinged to the top on the bottom of the frame, and the bottom part of the boards are equipped with eyelets that are pivotally connected to the sliders with levers, while the metal the T-section gasket and the elastic gasket are installed in the vertical joints of the formwork panels, and the arms of the brackets on the inner side are provided with a center ptrchchtsha rix0 five 0 five sixteen Kami and from the outside support rollers, and two-leg strings are passed through moving and stationary gripping devices, which are placed in the middle part of the end vertical guides, while the levers placed along the axis of symmetry of the sectors are rotated in the radial plane and the rest are from possibility of free rotation. 2. The formwork according to claim 1, characterized in that, in order to improve the quality of the concrete surface, the paired vertical lines sh 88528 The rulers are equipped with additional sliders placed above the lower frames themselves and connected to the main sliders by means of two parallel rods, and the travel of the sliders with the rods is limited to the stops mounted on the upper and lower frames, and to the upper and lower 10 parts The formwork panels are attached with brackets covering the upper and lower frames, and on the upper part of the formwork panels there are a row of in-ears, pivotally connected with power with additional sliders to form a parallelogram of the system. 35 35 55 1 Sh four# FIG. 2 Fig.Z 2588191 and FIG. 6 4j i Od I 2 / I turned Z ЯЯ 28,29 / 21 FIG. 9