SU1250466A1 - Concrete placer - Google Patents

Description

FIELD: production of precast concrete products | in particular, to devices for laying concrete mixture into the mold.

The aim of the invention is to increase reliability and improve operating conditions.

Figure 1 shows the proposed paver, side view; Fig.2 bunker, side view; on fig.Z - section aa in figure 2; figure 4 - section bb in fig 2; on fig.Z - section bb in,

The paver contains a portal 1 by a mechanism 2 of movement, a carriage 3 with a mechanism A of movement, a bunker 5, fixedly mounted on the carriage 3 and equipped with a bracket 6 and a feeder 7, made in the form of two oppositely directed removable vibrolocks 8 and 9 having a convex-curvilinear working surface downward towards the discharge (exit) windows 10 and 11, respectively. The angle between the tangent in the upper part of the working surface of the vibroblocks 8 and 9 and the horizontal is not less than 30.

The vibrating lines 8 and 9 are attached to the bracket 6 of the bunker 5 by means of an elastic element 12 installed between the vertical edges of the bracket and the vibrating channels 8 and 9, and fasteners 13 equipped with locking devices 14 and 15.

The conical heads of the fasteners 13 through elastic elastic sleeves 16 are installed in the conical holes of the bracket 6, designed to fasten two oppositely directed vibratory tracks 8 and 9, and staggered Elastic elastic sleeves 17 and elastic washers 18 are installed to prevent direct contact of the fasteners 13 with vibrating channels 8 and 9.

The discharge (exit) openings 10 and I1 of the bunker 5 are overlapped with slides 19 and 20, made in the form of a segment of a shaft mounted in bearing supports 21, which are attached to the walls of the bunker 5

Sh. Ber 19 is driven into rotation through the chain drive 22 from the actuator 23, and the gate 20 through the chain gear 24 from the drive 25. Drives 23 and 25 are mounted on brackets 26.

To the lower edges of the end walls 27 of the bunker 5, aprons 28 of elastic material (rubber, conveyor belt) are attached.

On the trolley 3, under one of the discharge (exit) windows 10 of the hopper 5 on the suspensions 29 a narrow leveling device 30 is mounted with a drive 31 of its lifting and lowering. Under the other discharge (exit) window 11 of the bunker 5 on the portal 1 a wide leveling device 32 is mounted with a drive 33 of its raising and lowering. The size of the wide screeding device 32 provides for the molding of products with a maximum width dp of a particular molding station.

Under the vibrating troughs 8 and 9, there are No. 1 stiffening ribs 34 and a platform 35 for installing vibrators 36 (on vibrating channels 8) and 37 (on vibrating channels 9) on them. Elastic-elastic pads 38 are placed between the side walls of the bunker 1 and vibrating channels 8 and 9.

The paver works as follows.

In the initial position, the discharge (exit) window 10 of the bunker 5 is blocked by the gate 19, and the discharge (exit) window 11 by the gate 20. The narrow 30 and wide 32 leveling devices are lifted by the drives 31 and 33 to the extreme upper position

The hopper 5 is filled with concrete t mixture. The movement mechanism 2 is turned on and the paver is fitted to the mold into which the concrete mix is to be laid (not shown).

If narrow products (columns, piles, girders, beams, etc.) are fastened to the form, the narrow leveling device 30 is lowered onto the mold by turning on the drive 31.

- The drive 23 is put into operation, as a result of which, through the chain drive 22, the rotation is transmitted to the gate 19, which, turning in the bearing supports 2I, opens the discharge (exit) window 10 of the bunker 5 to the required value. the concrete mixture from the bunker 5 enters the narrow fixing device 30 and through it into the opening of the mold.

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The movement mechanism 2 is put into operation and a paver with a working vibrator 36 on the vibrating channel 8 is driven along the entire mold, as a result of which the concrete mix fills the mold opening along its entire length.

Drive 31 is put into operation and (narrow leveling, device 30 is raised to its highest position.

If it is necessary to form two or more narrow products in the form, then the described operations are repeated as many times.

Include vibrator, 36 vibratory flow 8

The actuator 23 is activated in the reverse direction, as a result of which the gate 19 is rotated in the bearing supports 21 and closes the discharge (exit) window 10 of the hopper 5.

During the molding of wide flat products, a wide leveling device 32 is lowered onto the form, which is accomplished by switching on the drive 33.

The actuator 25 is activated, as a result of which, through the chain drive 24, the rotation is transmitted to the gate 20, which, turning in the bearing supports 21, opens the discharge (exit) window 1I of the bunker 5 by the required amount.

The vibrator 37 and the mechanism 4 for moving the trolley 3 are engaged in operation.

As a result of the shuttle moves of the hopper 5 with the operating vibrator 37 on the vibrating channel 9 on the trolley 3, the concrete mix is filled with the capacity of the wide leveling device 32 and the opening of the form under it.

The movement mechanism 2 is turned on and the paver is driven along the entire mold with a working vibrator.

50466

37 on the vibrating channel 9 of the hopper 5. And since the trolley 3 makes shuttle shuttles across portal 1 at that time, as a result, the form throughout its entire area is filled with concrete.

The vibrator 37 is turned off. 9.

The actuator 25 is activated 10 in the opposite direction, as a result of which the gate 20 rotates in the bearing supports 21 and closes the unloading (exit e) window 11 of the hopper 5. fs The actuator 33 is activated and

wide leveler 32 lifts to the highest position. This completes the paver's work. 20 The curved convex-curvilinear profile of the working surface of the vibrating chutes 8 and 9 (each subsequent to the previous ones is located in descending order) allows a significant increase in the flow rate of concrete outflow, i.e. performance.

Opening the gates 19 and 20 of the discharge ports 10 and 11 of the bunker 5 to the required value allows you to adjust the performance in a wide range.

Gaskets 12 and 38 of elastic elastic material (rubber) exclude the possibility of vibration transmission to bunker 5, which is also promoted by elastic elastic sleeves I6 and 17 and washers 18.

The locking device 14 exclude turning fastening elements. Comrade 13 when tightening or unscrewing their nuts, and locking devices 15 - spontaneous unscrewing the nuts of fasteners 13 when the vibrators 36 and 37 work.

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Editor L. Lezhnin

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Compiled by E. Shulenina Tehred O. Gortvay Corrector I. Muska

Order 4367/15 Circulation 555 Signature

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

A concrete paver containing a hopper mounted on a self-propelled portal with a composite vibratory feeder located in its lower part in the form of opposed sections with symmetrically vertical axis of the hopper with convex-curved working surfaces, characterized in that, in order to increase reliability and improve operating conditions, the hopper is equipped with mounted on its side walls symmetrically to the vertical axis with slide gates and an arm placed in its cavity, and each section of the composite vibrator with one con It is placed under one of the slide gates, while the other is supported on the bracket by means of an elastic element. fivl