SU1214813A1 - Apparatus for levelling-out and compacting concrete - Google Patents

Description

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The invention relates to the construction and can be used in the production of works both outside and inside industrial buildings for the installation of coatings of concrete mix.

The purpose of the invention is to increase the efficiency of distribution and compaction of concrete mixes.

FIG. 1 shows a device for leveling and compacting concrete mixtures, a general view; FIG. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. 2

The device for leveling and compacting concrete mixtures, mounted on the chassis of the base machine, contains a support column 1 with a bracket 2, on which is fixed an arrow 3 pivoting in the vertical and horizontal planes, on which a hinge 4 is used to mount a handle 5 with an end section 6 and the tilting mechanism 7 of the end section. On the bracket 8 of the end section 6, a leveling device is fixed with a vibration exciter. On the case of the hydraulic cylinder 9 exciter excitably pivotally mounted hub 10 with eyelets, 11. On the latter, by means of axles 12, the blade 13 and the double-contour frame 14 are fixed. The housing of the hydraulic cylinder 9 is rigidly connected to the end section 6, and the stem is pivotally connected to the brackets 15 of the double-contour framework 14 by means of a finger 16. The dumps 13 with double-contour frames 14 balanced with respect to the hub 10 by springs 17, resting on plates 18 rigidly connected to the hub 10. The rods 19 of springs 17 are connected to the finger 16 at one end, the nuts 20 with lock nuts 21 are installed at their free end, by means of which tension of springs 17 and position of double-contour frames 14 with dumps 13, Under axis 12, smoothing plates 22 are installed. Double-contour frame 14 is fixed at the level of cutting edges of the blade 13. One of the contours 23 of frame 14 is removed from the working surfaces of the blade 13, and the second circuit 24 is adjacent or equidistant from them.

The rotation of the boom 3 in a horizontal plane is carried out by a mechanism

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rotation of the base machine, inclination - by the hydraulic cylinder 25. The rotation of the hand 5 is carried out by the mechanism 26. The hydraulic cylinder of the outriggings 27, the hydraulic cylinders of the blade 28, the inclination of the boom 3 and the inclination of the end section 6 of the handle are provided with hydraulic locks to fix the set position.

The device works as follows.

Q way.

The base machine with the mounted device drives up to the concrete mix unloaded from the dump truck to the site, and is mounted on the outboard

and the supports 27 and the blade of the bulldozer 28 so that the axis of rotation of the supporting column 1 is perpendicular to the base. The position is controlled by the tilt indicator installed in the base machine cab and is provided by separately controlling each of the outriggers 27 and the blade 28. By means of the hydraulic cylinder 25, the boom 3 is lowered to the stop, the boom 3 and the handle 25 5 are turned by the screed The mace and hydraulic cylinder 7 are lowered to contact with them, then the leveling device is brought to the concrete mix, turning it so that the plane of symmetry of the working surface of the blade 13 coincides with the direction of movement ivayuschego tool. Include a pathogen of vibrations and begin to level

 concrete mix. In this case, the internal contour of the frame 14 oscillates in the horizontal plane, and the blade 13, which is rigidly connected to the double-contour frame 14, in the vertical plane. When the leveling device is moved, the external contour 23 of the vibrating frame 14 is first introduced into the concrete mix, the adhesion is destroyed and the concrete smudge in the shear plane is unfolded. The inner contour 24 of the frame 14, adjacent to the working surface of the blade 13 and equidistant from it, again unclenches the concrete mix. When the blade 13 is moved, the outer contour 23 of the vibrating two-contour frame 14 destroys adhesion along the front of the moving prism of the concrete mix and creates a liquid

55 phase in the shear plane, i.e. in the sole of the moving prism of the concrete mix the inner contour 24 of the frame 14 restores the liquid phase

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directly in front of the blade. The liquid phase reduces the force required to move the concrete mix. Following the inner contour 24 of frame 14, the blade 13 oscillates in a vertical plane, which significantly reduces the friction of the concrete mixture over the working surface of the blade, as a result of which the force required to move the blade 13 and, hence, level the concrete mix is reduced.

After leveling, the concrete mixture laid in the base is compacted by a vibrating double-contour frame 14. In this case, the excess concrete mix inside the frame is designed to fill possible recesses on the treated surface and cavities in the thickness of the coating, and the compacted surface is smoothed. The plates 22 of the double-contour frame 14 oscillate in the plane of the concrete pavement.

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FIG. 3

Claims (1)

A DEVICE FOR LEVELING AND SEALING A CONCRETE MIXTURE containing a boom mounted on the chassis of the base machine by means of a support column, a boom swivel in the vertical and horizontal planes and pivotally connected to it with a tilting mechanism and a leveling device in the form of a vibration exciter and dumps symmetrical with respect to it, that, in order to improve the efficiency of distribution and compaction of concrete mixtures, the leveling device is equipped with a rotary hub, dumps are rigidly knitted with them and set them at the level of the cutting edges with a horizontal double-contour outside zaglazkivarschimi plates and exciter is designed as a hydraulic cylinder, the rod of which is articulated _about a The relative shafts simply supported by springs at ® gndrotsilindre mounted on the hub, the latter being hingedly connected to lugs with double-circuit frames. SU ... 1214813 1 12