RU57293U1 - VIBRATION DEVICE FOR LAYING CONCRETE MIXTURES, PREVIOUSLY HARD - Google Patents

Abstract

The utility model relates to the construction industry, namely, devices for laying concrete mixtures, and can be used for laying and surface compaction of hard concrete mixtures, for example, in the production of highly saturated reinforcement products. The device includes a hopper, a vibration exciter and a sealing pad connected to a receiving window with a flexible connection and a smoothing pad. The sealing pad is rigidly connected to the hopper having an apron for guiding the concrete mixture under it. It is possible to produce hard concrete mixtures due to the message of fluctuations to the bunker and the possibility of breaking the flow of concrete mixture during release. 1 s.p. f-ly, 1 ill.

Description

The utility model relates to the construction industry, namely, devices for laying concrete mixtures, and can be used for laying and surface compaction of hard concrete mixtures, for example, in the production of highly saturated reinforcement products.

A device for laying and compacting pavements according to ed. testimonial. USSR No. 912812, class E 01 C 19/48, publ. in BI No. 10, 1982, containing a feed hopper mounted on the chassis of the base machine, distribution augers mounted on a swinging frame, and a working body in the form of a ramming plate hinged at one of the ends on the struts of the spring-loaded intermediate frame and connected by connecting rods with elastic elements with crankshaft vibration exciter. The device is equipped with a drive for changing the angle of inclination of the working body in the form of power cylinders, and the ramming plate, the intermediate frame and the crankshaft are made up of sections articulated and located symmetrically to the longitudinal axis. The free ends of the intermediate frame section are pivotally connected to the rods of the power cylinders that are mounted on the swinging frame of the base machine. The complexity of the design, the relatively large dimensions and the need for a basic machine make it difficult to use the above device when forming highly saturated reinforcement products.

The closest analogue in technical essence and the set of essential features is a device for laying concrete mixture during the construction of cement concrete pavement according to ed. testimonial. USSR No. 327287, cl. E 01 from 19/48, publ. in BI No. 5, 1972, including a hopper, a running gear, a compacting vibratory beam and a smoothing beam. An additional sealing element, for example a pipe, is rigidly attached to the vibratory screed using brackets parallel to it.

The described device has the following disadvantages.

Since the vibratory bar with the vibrator installed on it is not rigidly connected to the hopper, the vibrations in the upper part of the hopper are transmitted only through the concrete mixture with significant attenuation. At the same time, in the converging channel of the hopper, cramped conditions are created for the movement of the concrete mixture, since it is discharged from the hopper without breaking the flow, which contributes to its compaction and freezing. Therefore, when working with hard concrete mixtures having a high coefficient of adhesion, their release using this device becomes difficult.

The technical task of the proposed utility model is to enable the production of hard concrete mixtures by communicating fluctuations to the bunker and the possibility of breaking its flow upon release.

The problem is solved as follows. A vibrating device for laying concrete mixtures, mainly rigid, is proposed, including a hopper, a sealing and smoothing pad, a vibration exciter. According to the technical solution, the compacting pad having a receiving window and connected by a flexible connection to the smoothing pad is rigidly connected to the hopper having an apron for guiding the concrete mixture under the compacting pad. In this case, vibrations are transmitted to the walls of the hopper, which creates

favorable conditions for the production of hard concrete mixes. The presence of a flow rupture between the outlet window of the hopper and the receiving window of the sealing pad helps to prevent compaction of the rigid concrete mixture (hereinafter - the mix) inside the hopper in a converging channel. An apron is rigidly fixed on the hopper, which allows you to direct the mixture under the sealing pad. The smoothing pad is attached to the sealing pad with a flexible connection. At the same time, the smoothing platform moves along the surface of the mixture being compacted with vibration in the horizontal plane, forming a smooth surface of the product.

It is advisable to install the sealing pad at an angle to the horizontal plane, since in this case, the mixture being sealed penetrates in the best way into all the cavities between the laid fittings, which leads to an increase in the quality of the seal.

The essence of the technical solution is illustrated by an example of a specific design and a drawing, which shows a General view of the proposed device in longitudinal section.

The vibrating device for laying concrete mixtures, mainly rigid (hereinafter referred to as the device) includes a hopper 1 mounted on a rigid frame formed of transverse 2 and longitudinal 3 communication blocks. A frame with a mechanism 4 for controlling the thickness of the coating is supported on the running frame 5 with wheels for moving along the guides (not shown in Fig.). The sealing pad 6 is rigidly connected to the front wall of the hopper 1, which allows using one vibration exciter 7 mounted on the sealing pad 6 to release the mixture from the hopper 1 and carry out its surface sealing. The sealing pad 6 is a steel sheet with a receiving window 8 having a protective wall 9 that prevents the mixture from spilling outside the receiving window 8. The sealing pad 6 is installed at an angle to the horizontal plane to better fill the space under the reinforcement 10 with the mixture. To the sealing

a smoothing pad 12 is attached to the site 6 by means of a flexible connection 11. An apron 13 made of a conveyor belt is fixed on the front wall of the hopper 1 to guide the mixture being released under the sealing pad 6. The hopper 1 with the outlet window 14 is supported on the transverse communication blocks 2 through elastic elements 15. The reinforcement 10 is laid in the mold 16 in accordance with the requirement of the technological process.

The device operates as follows.

Before installing the device in the operating position, reinforcement 10 is placed in the mold 16 filled with the mixture. After that, the running frame 5 is mounted on the rails and the thickness of the molded product required by the technological process is set using the coating thickness adjustment mechanism 4. Then the hopper 1 is filled with the mixture, the exciter 7 is turned on, which excites the vibrations of the sealing pad 6, as well as the associated hopper 1, and the mixture is discharged from the hopper 1. In this case, the mixture is not discharged in a continuous stream, but with its gap at the outlet window 14, that is, vibration from the compaction layers of the mixture to the mixture located in the hopper 6 is not transmitted.

The sealing pad 6 exerts a dynamic effect on the mixture discharged from the hopper 1, directing it to hard-to-reach cavities - under the fittings 10. In this case, the mixture fills the entire volume of the mold 16 with the fittings 10 placed in it. The air during the compaction is displaced along the device between the apron 13 and the base of the form 16, as well as through the receiving window 9.

The vibrational effect of the hopper 1 on the rigid frame is suppressed by means of elastic elements 15. To direct the mixture under the sealing pad 6, an apron 13 is installed on the hopper 1 with the possibility of adjusting the height of its location depending on the depth of the reinforcement 10 in the mold 16.

Simultaneously with the beginning of the release and compaction of the mixture, the drive motor of the mechanism for translational movement of the device (not shown) is turned on and the device moves along the guides along the molded product. At the same time, the smoothing platform 12 makes oscillatory movements in the horizontal plane along the direction of movement of the device, forming a smooth surface of the product. The vibrations of the smoothing pad 12 in the remaining planes are compensated by a flexible connection 11.

Claims (2)

1. A vibration device for laying concrete mixtures, mainly rigid, comprising a hopper, a sealing and smoothing pad and a vibration exciter, characterized in that the sealing pad with a receiving window connected by a flexible connection to the smoothing pad is rigidly connected to the hopper having an apron for directing the concrete mix under the sealing pad. 2. The device according to claim 1, characterized in that the sealing pad is installed at an angle to the horizontal plane.