SU682376A1 - Apparatus for making prestressed concrete products - Google Patents

Description

The invention relates to devices for the manufacture of prefabricated concrete products and can be used to manufacture prestressed bridges of bridge span structures.

Devices are known for the manufacture of prestressed reinforced concrete products, especially for beams of bridge span structures, including a support frame in the form of symmetrically arranged longitudinal beams interconnected by connections and diaphragms, wheel sets, bottom plate, and side and end shields 1 and 2.

However, such devices do not reduce the complexity of manufacturing prestressed concrete products and do not provide for an increase in reliability.

The purpose of the invention is to reduce the labor of manufacturing prestressed concrete products and increase reliability.

This is achieved by the fact that in the device comprising a carrier frame in the form of symmetrically arranged longitudinal beams interconnected by links and diaphragms, wheel sets, pallet, side and end shields, each front shield is made of one fixed and two moving parts, having cut-outs with seals for bundles of reinforcement at their joints, and the upper part of the side shields are made removable and equipped with a vertical supporting fence and hitch, interconnected by an adjusting screw, while the pallet s an longitudinal edges and is rigidly prIKreilen the diaphragms, and the longitudinal beams are arranged above the wheel bunks.

FIG. 1 shows the proposed device for the manufacture of prestressed concrete products.

from the side; on fit. 2 - the same: plan; in fig. 3- device with closed opa.bbkoy. clamping devices and reinforced concrete products, cross section; in fig. 4 - the upper part of the side shield,

fragment; in fig. 5 - end face of the formwork.

The device for the manufacture of pre-stressed reinforced concrete products consists of a supporting frame made

The CCs of two symmetrically arranged beams 1, interconnected by connections 2 and diaphragms 3. Along the ends of the longitudinal beams 1 are located the thrust devices 4, through which the forces are transmitted from the pre-tensioning line;

fittings to the device. For the convenience of servicing the device b: alkn 1 is moved from the concreting zone to the unused area under the open formwork and are located coaxially to the loot m 5. The longitudinal beams 1 have closed box shapes, oh, with built-in wheel pairs 6. PODDON 7 has longitudinal ribs 8 and rigidly attached to the upper diaphragms 3 themselves. The side shields 9 of the arms, equipped with irizhimi devices 10, pivotally attached (To the upper 1 diaphragms 3 along the top 3 of the rear shields 9 are made removable and consist of vertical supporting barrier 11, zatzhek 12, rubber liner 13 and grippers 14, interacting through a screw - nut system 15 with side shields 9. The shield is divided into three parts, two of which are 16 (made movable and attached to one of its sides to the side shields are 9 old pins, and one is fixed 17 rigidly P | rik | replen; to the pallet 7. The boundaries of the joint parts of the face shield extend about 1 high-voltage reinforcement bar 18. In these places there are cuts, equipped with seals 19.

The device works as follows.

With open positioning of the formwork that serves as 1pod: bridges, the device serves to reinforce the molded product with machining | working reinforcement 18. Tensionary reinforcement 18 nat 1G1 is attached to the support means 4. With the help of a crane, side shields 9 of the formwork are raised and exposed using -jimming devices 10. Install reinforcing grids of a plate of a molded product and a vertical supporting barrier 11 fixing the design position of the sheet by means of grippers 14 and a screw-nut system 15. Between the upper and lower releases of the grids llita products

Insert rubber inserts 13 and concrete the product. After a set of products with a strength of 100 1 kg / cm2 is removed, the fencing is removed and the device with the formed

the product and the bottle are fed into the steam chamber.

Such a constructive solution of the described device reduces the laboriousness of manufacturing prestressed

concrete products - and increases the reliability of work.

Claims (2)

Invention Formula A device for the manufacture of prestressed concrete products, mainly beams, bridge spans, deactivating the supporting frame. In the form of symmetrically arranged longitudinal beams connected with each other by connections and diaphragms, wheelsets, pallet, side and face shields, characterized in that, in order to reduce the traffic intensity of the manufacture of prestressed concrete products and increase the reliability of operation, each face shield is made of one fixed component and two movable parts, having cut-outs with sealings for reinforcement bundles in their places of tension, and the upper part of the side shields is made removable and equipped with a vertical supporting fence and pulls connected between an adjusting screw, wherein Loddon .prodolnye has ribs and is fixedly attached to the diaphragms, and the longitudinal beams are arranged above the wheel pairs. Information sources, accepted IBO attention during examination 1 and 2. Mokhortov К-В and others. Manufacturing of precast concrete structures of transport construction. Reference book, M., “Transport, 1970, p. 158, fig. 73, p. 156- 158, fig. 68 “Us P FIG. four