SU51093A1 - Pipeline Concreting Device - Google Patents

Description

There are known devices for betonironi pipelines consisting of mobile external and internal formwork, the external formwork moving with the help of a gantry crane, and the internal form using a trolley located inside the pipe and having lifting screws. Such devices are meant to concrete only the upper part of the pipeline, but its lower part must be concreted in advance. Along the finished bottom of the pipeline, the trolley moves, carrying the inner formwork.

The proposed device relates to devices of the specified type, but means to concrete the upper and lower parts of the pipeline at the same time. To do this, in the proposed device, the lifting screws of the inner carriage, which could be placed on the gantry crane, are connected to the lower part of the inner formwork with the help of a stopper. Due to this, the cart can rest on the bottom of the formwork when the upper part of the pipeline is concreted. In addition, the lower part of the formwork has windows that are covered with shutters to install the wheels of the trolley on the concrete of the pipeline when the formwork is removed and moved.

In FIG. 1 depicts the proposed device-view from the end; FIG. 2-side view of the device; FIG. 3-device during the shifting end view; FIG. 4 is a longitudinal vertical section of the device; FIG. 5-table order of work.

Portal farm (crane) 6 on wheels 7 is placed on a track laid on the sides of a trench. The farm bears on itself both an internal formwork with the cart 4, and an external formwork /. The jacks 10 connecting the truss b with the wheels are arranged for precision installation of the formwork. External and internal formwork are placed on a hook // to the farm, with shtruvala 8 at the top you can raise or lower both external and internal formwork.

Outdoor formwork / made of sheet iron with welded stiffness corners and consists of two halves connected by means of joint 3, for which the formwork to the farm is highlighted. The formwork working surface in contact with the concrete may be covered with sheet rubber to eliminate the possibility of the concrete setting to iron. On each side of the outer formwork, there are two detachable screws 14, which, when rotated using the side handwheels, can be used to pull the formwork away from the pipeline.

Screws

secured to the portal

farm sharnarno. The outer formwork has windows 2 for loading concrete and for pre-vibrators,

Internal formwork is the same as. The exterior is made of sheet iron with corners of rigidity and consists of the upper part 9 and lower 12. The entire working surface can also be covered with sheet rubber. In addition, the upper part of the inner formwork consists of two halves interconnected by a hinge 15. The hinges 15 are mounted on special bearings 16 on the carriage 4 and attached to the hooks // for suspending the inner formwork with the carriage to the portal crane. These hooks are located in slots in the formwork, which are closed after the inner formwork is removed from the hooks and the hooks are removed. The lower part 12 of the inner formwork consists of three parts, which are articulated together, and is attached to the screw 17 of the carriage 4 by means of a subgun 18.

The sides of the inner formwork have clamping screws 19 rotated by a ratchet 23 and interconnected by Gall chains on sprockets 20. Rotation of the tightening screws 19 reduce the upper parts of the inner formwork around the hinges 15. The inner cart 4 is connected with vertical screws 17 .

By rotating the screws 17 using the steering wheels 13, the trolley 4 with the upper part 9 of the inner formwork can be raised and lowered. The wheels 22 of the trolley 4 are provided with load-carrying tires of a conical surface close to the surface of the pipeline section bottom. In H (the inner part 12 of the inner formwork there are windows opposite each wheel 22, which can be opened if necessary.

In order to properly install the inner formwork, there are spacers 5, which are removed gradually as concrete is cast, and the holes from them in the outer formwork are plugged with traffic jams.

The work of concreting and demoulding is done in the following order. The outer and inner forms are suspended from the gantry crane. The concrete in the trough is fed to the top of the truss, from where, through special sleeves, into the windows of the external formwork and fills the spaces between the formwork. This produces concrete vibration. Bringing the concrete to the struts D, these struts are taken out, having filled the holes with stoppers, and gradually fill the whole section, leaving the lock (upper part of the pipe) of the plant. After that, the hooks are removed, on which the inner formwork was hung, which is now placed on the bton. The voltage on the beta.h is of the order of 0.2 kg / cm - which is safe. Then hook holes are laid in the inner formwork. and the pipeline is closed through the strip in the external formwork in a pattern. The portal ferra is released for the next section of the pipeline, and the external and internal formwork are left until the concrete is set (about 3 days).

The removal of the outer part of the formwork occurs somewhat earlier than the internal one. For demolding, the portal farm is fastened to the external formwork, which is hooked by hooks //. With detachable screws 14, the sides of the formwork are retracted (both halves are possible at the same time, and each can be done separately), and then, with the upper hand wheels, the entire external formwork is raised to the desired height.

Internal formwork is decomposed as follows. The ratchet rotates the rotates 23, you 19, and thus the two halves of the upper part 9 of the inner formwork, around the hinge 15, come together (folded). in advance open windows in

the lower part of the formwork of the garden vehicle on the concrete (pressure on the concrete is 0.3 kg / cm). By subsequent rotation of the same screw 17, the lower part of the inner formwork is raised to the required height to allow free exit. The sides of the lower part 12 of the inner formwork are pulled away with the help of special chains.

In this form, the entire internal mechanism can be removed from the pipeline and brought back to the farm for further work.

Work on the sites may occur in the following order. The first shift of workers installs 3 sections of 5 meters each, t. e. 15 metrosis and concretes (see table-fig. 5), the second shift also establishes 15 new meters

Total per day concretes 30 p. meters of water (part i-fig. 5) with one tap. After this, plot 11 is established, then 111 and IV. On the fifth day, area I is disassembled and formwork is both externally and internally transferred to area 1, from section II to section il from 111 to TS, etc., from left to right.

The rail track is laid in sections of 120 meters and shifted as it moves.

Preparation of the bottom of the trench and pods under the pipeline is all the time ahead.

The subject matter of the invention.

Claims (4)

1. A device for concreting pipelines, consisting of outer and inner folding formwork, gantry crane and trolley with lifting screws, used to install and move the inner formwork, characterized in that the lifting screws 17 suspended from the portal crane of trolley 4 are connected to the bottom 12 of the internal formwork with the aid of a spacer 18 in order to support the carriage on this (part of the formwork when concreting the upper part of the pipeline, and the lower part of the formwork has windows blocked by gates for installation of 22 trolleys on the pipeline concrete when removing and moving formwork. 2. The form of the device according to claim 1, characterized in that the lower part of the formwork consists of three elements that are interconnected in a hinged manner. 3. In the device according to claims. 1 and 2, the use of screws 19, actuated by a ratchet 23 and chains, designed to install and remove the upper part 9, the inner formwork, which is composed of two elements that are hinged to the carriage. 4. In the device according to claims. 1-3, the use of screws 14 for mounting and removing outer formwork consisting of two elements hinged together. to the author's} certificate of A. A. Runvch and B. A. Chiknaverov 51093. 1, .- fm (a2 I.