SU1736711A1 - Concrete placer - Google Patents

Abstract

This invention relates to the molding of precast concrete and reinforced concrete products. The aim of the invention is to increase reliability. This is achieved by the fact that each tray is made in the form of a circular sector with a central axis, on which bearing supports are fixed, rigidly attached to the side walls of the bunker, while the central axis of the vibrating channel is connected with its drive by means of a chain transmission, and the central axes of the vibrating trays are located below contact lines last. 6 Il.

Description

This invention relates to the molding of precast concrete and reinforced concrete products.

A paver containing a self-propelled gantry, a bunker mounted on it with a feeder in the form of two articulated counter-directed vibro-traps with a convex-curvilinear working surface, turning from the cable-blocking mechanism, and vibrating nozzles with a smoothing device are known.

The disadvantage of this paver is the pinching of the concrete aggregate between the lower edges of the walls of the bunker and the surface of the chutes, which eliminates the possibility of tight closing of the lower opening of the bunker, resulting in the liquid component of the concrete mix (cement milk), lean concrete mixture, contaminated technological equipment below. This is due to the fact that the axes of rotation of the trays are located at one of their ends (upper). When the tray rotates around this axis, its lower end shifts from the lower edge of the wall of the hopper by 100-250 mm. After unloading from the bunker of the concrete mixture at

By closing the lower opening of the bunker, the gravel remaining on the trays falls into the gap between the trays and the lower edges of the bunker, making it difficult to close the opening, and there is also an overload of the drive leading to an electric motor failure.

The purpose of the invention is to increase reliability.

This goal is achieved by the fact that a paver containing a self-propelled portal, a self-propelled bunker mounted on it with a feeder in the form of two articulated counter-directed vibrating channels with a convex-curvilinear working surface, vibrating nozzles with a smoothing device, each vibrolock is made in the form of a circular sector with a central axis, at the ends of which bearings are mounted, rigidly attached to the side walls of the bunker, with the central axis of the vibrating channel associated with its drive by means of a chain Transferring and the central axis of the vibrating troughs placed below the last contact.

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The opening and closing of the lower opening of the hopper 3 is carried out by rotating the vibrating chutes 5 in the form of a circular sector around their axes 6 without detaching them from the lower edges of the walls of the hopper 3, which eliminates pinching between the working surfaces of the vibrating trays 5 and the lower edges of the walls of the hopper 3 of the concrete mix (gravel rubble), and this excludes the expiration of the concrete mix, contamination of downstream equipment, breakdowns of the elements of the drive trays, etc., i.e. increases the reliability of the paver.

Figure 1 shows a paver, side view; figure 2 - view And figure 1 (concrete paver, front view); on fig.Z - bunker, side view (the lower opening of the bunker is closed); figure 4 - section bb in fig.Z; in fig. 5 - bunker, side view (the lower opening of the bunker is partially open); figure 6 is a view In fig.Z.

The paver contains a self-propelled gantry 1 with a 2-way mechanism, a hopper 3 with a 4-way mechanism and a feeder in the form of two symmetric, hinged-mounted drive vibrorails 5 with a convex curvilinear working surface, each in the form of a circular sector with a central axis 6 located in the center of it circular sector, mounted in bearing supports 7, rigidly attached to the side walls of the hopper 3 in such a way that the centroal axes of the vibrating channels are located under the end walls of the hopper 2 lower There are no lines of contact of vibrotracks 5 in the closed position of the lower opening of the bunker 3. The central axis of the vibrotrays is connected to the drive by means of a chain drive in the form of an asterisk 8 connected by chain loops 9 with asterisks 10 of the drives 11 of the vibrotrays turning 5. There are vibrators on the vibrorafts 5 12. The lower edges of the side and end walls of the bunker 3 are attached to the seals 13 and 14 of elastic material, such as sheet rubber or transport tape, which are in constant contact with the working surface of the vibrating chutes 5. To the bottom Seals 15 are attached to the edges of the vibrating chutes 5, which are in contact with each other when the lower opening of the bunker 3 is closed. Under the bunker 3, on the ropes 16 of the drive 17 are hung a vibrating nozzle 18 with a wrapping device 19.

The paver works as follows.

The movement mechanism 2 of the portal 1 is put into operation, whereby the paver is fitted to the form (not shown) to which it is to be delivered.

laying concrete mix. After that, the movement mechanism 2 of the portal 1 is turned off. The drive 17 is activated, whereby the vibrating nozzles 18 are lowered onto the upper

edges of form boards. Further, the drives 11 of the rotation of the vibrating chutes 5 or both of them, or one of them either, are activated, whereby the vibratory troughs 5 with the axles 6 are rotated in the bearing supports 7 and

the lower opening of the hopper 3 is opened to the required value. After that, vibrators 12 or both, or one of them, are either put into operation, as a result of which the concrete mixture located on the vibratoles 5 liquefies and intensively flows out of the hopper 3 into the container of the vibrating nozzle 18, and from it into a form. Then, the mechanism 4 for moving the bunker 3 is put into operation. Through the shuttle aisles of the bunker 3 with the open

the lower opening and the working vibrators 12 along the vibrating nozzle 18 are filled with the concrete mixture of the entire capacity of the vibrating nozzle 18 and through it the forms over its entire width. Then, the movement mechanism 2 of the portal 1 is activated, whereby the paver moves along the mold. And since at this time the bunker 3 with an open lower opening and working vibrators 12 on

from the mechanism 4 to move the shuttle passes along the vibrating nozzle 18, the concrete mixture, which flows intensively from the hopper 3, constantly fills the tank with the vibrating nozzle 18 and through

its shape over its entire width.

If the vibrating nozzles contain exciters of sufficient power to compact the concrete mix, then the paver also compresses the concrete paver with the laying of the concrete mix. After compaction of the concrete mix in the form of one way or another, the upper open surface of the product is smoothed with a smoothing device 19.

The vibrators 12 are turned off. Drivers 11 turn the vibrating channels 5 in the opposite direction to close the lower opening of the bunker 3, as a result of which the vibrating channels 5 touch the seals 15 attached to them until the lower opening of the bunker is completely closed. Drive 17 is engaged in reverse

the direction whereby the vibrating nozzles 18c by the smoothing device 19 rises to the uppermost (transport) position. The mechanism 2 for moving the portal 1 is put into operation and the paver is distilled to the place of loading of the hopper 3 with concrete. This completes the paver cycle.

When the hopper 3 is loaded with a concrete mix, the latter, falling on the vibrating trays 5, promotes their convergence, i.e. tighter closure of the lower opening of the bunker, which prevents the outflow of cement milk from the bunker. When the lower edges of the vibrating channels 5 (or seals 15) touch, the movement of the vibrating channels 5 is eliminated, thus eliminating the load on the chain loops 9 of the drives 11, i.e. overload is eliminated, resulting in improved device reliability.

In addition, the proposed device is more economical from the point of view of material intensity, energy intensity, labor intensity of manufacture and operation.

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Claims (1)

The invention of the paver includes a self-propelled portal, a bunker mounted on it with a feeder in the form of symmetric hinged-mounted driving vibrolots with a convex-curvilinear working surface and vibrating nozzles with a smoothing device, characterized in that, in order to improve reliability, each vibroflow is designed as circular sector with a central axis, at the ends of which bearings are mounted, rigidly attached to the side walls of the bunker, with the central axis of the vibrating channel associated with it is driven by a chain transmission, and the central axes of the vibrolocks are located below the contact line of the latter. 17 FIG. 7 "M eight 14 Fig.N Bb 12 15 Editor M. Bandura 87V S Compiled by A.Semenovfig s Tehred M.MorgentalKorrektor S.Shevkun / / 12 15 13 7