CS254156B1 - Vysfrveciezarieni for 4-year concreting of the bridge lamella - Google Patents

Abstract

The device has extendable booms; by which it is itself moved, provided with a lifting device and a mobile transport beam with lifting devices driving on the booms and their beams. By combining the movements of the booms and the carrier beam, a substantial part of all forming operations can be carried out with the individual mold molds suspended on the lifting devices. The advantage is that a crane is required for molding, it can be reinforced with armo-baskets, clamped by a pre-concreted slat to reduce the weight of the device. The procedure and the equipment are suitable for all practically occurring bridge constructions constructed by flying concrete.

Description

3 4 254136

BACKGROUND OF THE INVENTION The invention relates to a vacuum cleaner for flying concrete bridge lamellas. In the present time, several devices are known for flying concrete bridge slats.

A concrete truck device is based on the principle that the transfer and posting of the forming device is by means of a high, mostly trussed structure, with a cantilevered portion on which the front part of the lower molding platform is hung, while the rear part is hinged at the rear end of the Cracker. The vehicle runs on the top plate of the slat. The stability of the water is ensured either by a counterweight or by a track anchored to the slat with the guiding of the traveling wheels preventing them from being lifted. The lateral parts of the mold are hinged on the cross members of the cantilever structure.

The disadvantage of this otherwise reliable device is its high weight and size, as well as the impossibility of reinforcing it with lamellar armrests for inaccessibility from above.

Also known is a device in which the front part of the molding platform is vacuumed by a new crane, the back part of the non-squeezing beam traveling over the upper plate. After fixing the platform to the previously constructed slats with screws and other assembly of the other equipment is the help of cranes.

The disadvantage is the necessity of using bridge cranes.

The aforementioned drawbacks are eliminated by the suction molding device for the concrete slab bracing according to the invention, placed on the upper plate of a previously constructed bridge slat, the principle of which is to deposit the slat of the bridge by successive vacuuming and joining individual parts by a vacuum cleaner.

The vacuuming device has at least two rollers mechanically or hydraulically extractable from the beams fixed by the upper edge of the bridge plate and one carrier carrying the beams and the boom of the suction device. The extension of the mold parts suspended on the boom carrier lifters is accomplished by vacuuming the booms and moving the carrier. The entire vacuum cleaner is pumped into the new position. The advantage of this device is that it releases the lower control platform for the shifting armrests, makes it available for the concrete work and the upper surface of the bridge slat between the equipment beams for the movement of other technological devices. It permits both a stepped concrete slab and its concrete concreting, allowing a further advantageous clamping of the lower molding platform of the built-up bridge slat with inclined suspension rods and subsequent loading with the process equipment and concreted slab, thereby substantially reducing the weight of the device. There is no need for a crane for the operation of the equipment;

In the accompanying drawings, there is shown a retractable device, wherein in FIG. Fig. 2 shows the lower mold platform suspended from the boom and transport beam; Fig. 3 shows the transport carrier and booms in the retracted position; the lower molding platform is about the bridge most fastened by fasteners and sloping suspension rods; Fig. 4 shows the vacuuming of the formwork suspended on the boom lifters and the transport beam, in Fig. 5 a cross section and B device.

The vacuum device (Figs. 2 and 5) consists of the following main parts: at least two carriages 1, into which the lugs 2 and the carrier beam 7 are inserted. The arms 2 are made of beams 1 fixed by the lamelumosta 16 by holding elements, e.g. At the end of the booms, there is a transfer pin 5 and a hinge 3, which can also be a continuous beam (FIG. 5 is a sectional view of a suspended lifting device 4, e.g. hand or electric hoists). The transport beam 7 is provided with a bogie 6 by means of which it can be driven over the upper beam 1 and the beam 2, which, if necessary, permits the transport of the beam to the extended beams 2, thereby releasing the upper surface of the beam by the intermediate beams. 7 may be independent of the vacuuming of the booms 2, or their movement may be coupled to the puller 18. a further lifting device 4 is placed on the lower part of the transport beam 7 and its lower lugs 17, which are attached to the suspension rods 10, can be attached to the lower-forming platform 8 to the lamella 16 when it is fastened by clamps 13.

The operation of the device begins by moving it (Fig. 1) to a previously constructed lamella 16 in such a way that the beam 2 is extended so that the thrust rod 5 can be caught by the lamella face and is moved after releasing the retaining elements of the beam 1 by inserting the beam 2 into the beam 1 the device on the lamella 16. After detaching the face 5 from the formwork 11a, releasing the lower molding platform 8 from the lamella 16, it moves (FIG. 2) mounted on the hinge rods 10 of the boom 2 and the transport beam 7 into the new position. Thereafter, the lower forming platform 8 is fastened to the lamella 16 by the clamps 13, releasing the suspension rod 10, whereby the supports 14 of the lamella support 16 and the outriggers are retracted backward by the support 1 (Fig. 3). After storing the armrests 15, the lower forming platform 8 suspends the slat 16 by sloping suspension rods 12. The formwork 11 is moved after the bottom slab of the newmost slat has been concreted

Claims (1)

SUBJECT Slider. a device for overhead concreting of a bridge slat consisting of beams, jibs and a transport beam, characterized in that the beams (1) have extendable jibs (2), the ends of which are provided with hinges (3) for the pulley Y N AL EZU machines ( 4) and retaining pins (5), wherein at. The chassis (6) of the transport beam (7) is provided with supports (17) for the suspension rods (10) and at the bottom. parts by hoists