SU1096199A1 - Method of mounting hoisting arrangement for erecting a flue - Google Patents

Abstract

THE METHOD OF INSTALLATION OF ELEVATING DEVICES FOR ESTABLISHING A FUME PIPE, consisting in mounting rods-pushers with rigid and supporting frames with the help of cargo lifting equipment and mounting the lifting head with sub-frame mechanisms and other accessories, with supporting equipment on the frame, with supporting equipment and other accessories. , in order to ensure the construction of pipes from monolithic concrete, first the assembly of guide pipes is made, which are tightly connected to the walls of the barrel of the pipe when concreting its bottom plate, then installing pour-out cassettes are poured in with wedge-mounting devices and fasten cassettes with guide tubes, after which permanently install lifting power jacks with rods one for each cassette on the pipe base, then the rods of these jacks are raised to the bottom of the cassette, loaded into the last rods - pushers and raise them with rods up to the level of each magnetic wedge device, after which the pusher rods are clamped with a magnetic wedge device, and the rods of lifting power jacks are grind down to the loading of the next pusher rods, with this, sliding cylindrical formwork is installed on the upper pusher rods, which are moved along the pusher rods upwards, while at the same time all the pusher rods in the upper part of the concreted body are passed through the stands of the rigid frame and strengthened to the supporting frame, a lifting head is mounted on the carrier, after which the lifting mechanism and all auxiliary equipment are suspended on the latter, which, together with the lifting head, are lifted with the help of shtavlchatel hardening of the concrete under the pipe, simultaneously temporarily raise the formwork in the guide channels along the pusher rods to the level of the upper concreted soil, and repeat all subsequent cycles, while concreting the trunk to the full height of the pipe.

Description

f1 The invention relates to lifting machinery, in particular, to methods of mounting lifting devices for chimney erection. There is a known method for mounting lifting devices for chimney erection, which consists of mounting pushers with rigid and supporting frames using load-lifting devices. and install a lifting head on the supporting frame with lifting mechanisms and all auxiliary equipment C 11. However, the known method is characterized by the impossibility of building pipes from mon litnogo concrete. The purpose of the invention is to provide construction of monolithic concrete pipes. This goal is achieved in that according to the method of installation of lifting devices for the construction of a chimney, which consists in mounting rods with a rigid and supporting frame using lifting devices and installing a lifting head with lifting mechanisms and all auxiliary equipment on the supporting frame , first, the assembly of guide pipes, which are tightly connected to the walls of the barrel of the pipe when concreting its bottom belt, are installed, then the receiving and unloading cassettes with m wedge-mounted devices and fasten the cassettes with guide tubes, then on the pipe base permanently install lifting power jacks with rods one for each cassette, then the rods of these jacks are raised to the bottom level of the cassette, loaded into the last pusher rods and they are raised by the rods up to the level of each magnetic wedge device, after which the pusher rods are clamped by the magnetic wedge device and the rods of the lifting power jacks are lowered until the next pusher rods are loaded at the same time, on the top pushes, the gi-pushers install sliding cylindrical formwork slides, which move upwards along the pusher-pushers, while all the pusher-rods in the top, parts of the concreted board, pass through the rigid frame stands and fasten to the supporting frame , on which the lifting head is mounted, after which, 9, the lifting mechanism and all auxiliary equipment are suspended on the latter, which, together with the lifting head, are used to lift the concrete along the lifting pipe with the help of pushrods, simultaneously to raise the formwork in the guide channels on the pusher rods, to a level of the upper m concreting waistband and repeating all subsequent cycles at the barrel concreting the entire height of the tube. Fig. 1 shows the layout of the guide channels in the body of the reinforced concrete pipe walls, a plan view) in Fig. 2 — a metal receiving and unloading cassette, guiding nozzles and the passage of the hydraulic jack rod, the moment of loading of the pusher rods into the cassette; Fig. 4 shows the connection of a supporting metal frame with push rods of Fig 4; a lifting head with a layout in terms of ready-made elements of trusses and additional links fixed along the top and bottom along c of the trusses of Fig. 5 is a section A-A on Fig. 4, the method of operation of the push rod and the carrier lifting head during the construction of a multi-stemmed chimney in monolithic form; in Fig. 6, the connection of the push rods in working condition and their passage through the guide channel in the pipe body, the section in figure 7 - section bb and 6, a guide channel disposed therein and bar-pushers and the centering insert for mating during operation, a plan view. The method of mounting the lifting device includes making guide channels 1 and arranging them in the body of reinforced concrete walls 2 of the pipe barrel. The metal guide pipes 3 (Fig. 2) are connected to the receiving-unloading cassette 5 by means of flanges 4, after which they are bolted or welded, and the cassette is equipped with a door 6 having an actuator 7. The rods are loaded into the cassette 5. Cathels 8, which are made of gas pipe metal. with reinforced cross-section of the walls. In the upper part of the discharge-unloading cassette 5, a cylinder 9 is installed in which a magnetic wedge device is placed to hold the rods of the pushers 8 in their operating state, when the jack 11, for the next boom loading into the cassette. All pusher rods 8 are connected to the supporting metal frame 12 (fig. 3, node I and tt), after which they are tightly fixed at all nodes of the connections. The supporting frame 12 consists of racks, beams, diagonal braces and struts, which are shown in the drawing by a vector and connected to the supporting lifting head. Pusher rods 8, located at the level of a concrete pipe, are protected from concrete by a cylindrical movable formwork 13, (node II), which, during the process of hardening of concrete, lift body 8 upwards along the connecting rod, and then, together with ancillary equipment, raise it to the height of another concreted on sa pipe. The lifting lifting head consists of six rigid elements of the trusses 14 (Fig. 4), which are located perpendicularly to each other in terms of the plan and are additionally fastened along the lower and upper links of the trusses themselves from a corner, channel bar, I-beam or pipes. individual semi-circles 15 and rings 16, on which ancillary equipment is suspended. Using flexible connections 17 (FIG. 3), including scaffolding working floor 18, vibrating chutes 19, external metal formwork 20, telpher trolley 21 serving for cargo movement, cargo polyspasts for rise hopper 22 with concrete, using a cargo electric winch 23, which is installed outside the pipe, while the entire working area and lifting head are protected by a canopy of tarpaulin 24. At the upper end of the lower shank 8, the centering insert 25 is pressed in the hot state (FIG. 6), provided with a shoulder 26 (Fig. 6), while the centering insert 25 is made of more durable steel and has a bevel 27, between the wall

the push rod 8 and the reinforced concrete wall 2, the guide channel is left a gap 28. The walls of the guide channels of the reinforced concrete channels have a smooth surface, -55 their strength is determined by the metal frame of the pipe stem and the strength of concrete M-300, for faster

When the boom-pusher 8 is lowered into the cassette 5, then the boom is automatically pushed out and: from the cassette after the door 6 is opened.

The switching on and off of the hydraulic jacks 11 is carried out synchronously from one control panel. Steam is supplied and steam steamed after the concrete pipe of the next sa pipe is produced. The rigidity and stability of the entire lifting device is ensured by the two upper pusher rods 8, which are rigidly interconnected. Paired push rods are installed in each guide channel (if necessary, their number can be increased to three) and 1/3 of the length are permanently located in the guide channels. At the concreted level, the pusher rods 8 are placed in metal formwork and pass through the hollow corner posts of a rigid metal frame that is fixed to the rods after the final lifting of the carrier head, which is additionally equipped with hydraulic outriggers, thereby achieving stability of the entire lifting device. The upper rods 8 are rigidly connected to the supporting metal frame 12, the height of which is determined by calculation, but not more than three heights of the concreted concrete pipe, while the upper legs of the frame are rigidly connected to the bearing lifting head, which are additionally fastened with braces for the stability of the head in work process. The dismantling of the entire lifting device is carried out with the aid of aircrafts and other lifting devices in reverse order. First, the aircraft lift the lifting head with attached auxiliary equipment, then remove the rigid frames and the upper two rods-pushers of the guide channels, the remaining rods-pushers are lowered along the guide channels under the weight of their own weight, which are constantly supported by the rod of the hydraulic jack 11 and are clamped by the magnetic wedge device S109

With the proposed method of mounting a lifting device for erecting a chimney, the following are as follows. All the pushers placed in the guide channels are joined to the joint by means of a centering insert with the exception of two or three upper tiashg, which have a rigid connection, while their removal is carried out in reverse order along the same guide channels under its own weight, which are gently lowered with the help of a hydraulic ram rod and periodically held by a magnetic wedge device.

99

The supporting and guiding metal frames are mounted and dismounted in one-piece blocks, including the carrying head, for which aircraft are used for lifting.

The total labor costs for installation and disassembly of the lifting device as a whole are reduced.

All technological operations for lifting the carrying head and all auxiliary equipment are qualitatively improved.

 The time for mounting and dismounting the entire lifting device is reduced by 2-3 times.

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FIG. 5 12

FIG. 6

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Claims (1)

METHOD FOR MOUNTING LIFTING DEVICES FOR CONSTRUCTION OF A SMOKE PIPE, which consists in mounting pusher rods with a rigid and supporting frame using lifting devices and installing a lifting head with lifting mechanisms and all auxiliary equipment on the supporting frame, characterized in that, in order to ensure the construction of pipes made of cast concrete, first they install the guide pipes, which are tightly connected to the walls of the pipe trunk when concreting its lower belt, then install pick-up cassettes, with wedge-mounted devices, and fix cassettes with guide tubes, after which lifting power jacks are fixedly installed on the pipe foundation with rods, one for each cassette, then the rods of these jacks are raised to the lower level of the cassette, loaded into the last push rods and they are raised with their rods up to the level of each magnetic wedge device, after which the push rods are clamped with a magnetic wedge device, and the rods of the lifting power jacks are lowered to loading and the next pusher rods, in this case, sliding cylindrical formwork is installed on the upper pusher rods, which move up the pusher rods, while all the pusher bars in the upper part of the concrete belt are passed through the struts of the rigid frame g and attached to the supporting frame, on which the lifting head is mounted, after which the lifting mechanism and all the auxiliary equipment, which together with the lifting head with the help of calipers are lifted after hardening the concrete, are suspended on the latter of pipe belt simultaneously raise the formwork in the guide channels of the pushing rods to the level of the upper belt and repeated concreting, all subsequent cycles at the barrel concreting the entire height of the tube. SU, .., 1096199 1 1096199