SU1608291A1 - Device for making foundation pit - Google Patents

Abstract

The invention relates to construction and can be used for the construction of foundations without excavation. The purpose of the invention is the expansion of technological capabilities. A device for forming trenches contains a tamper in the form of vertical sections 1 pivotally connected in the upper part with contiguous internal cavities 2 and inclined grooves 3 in them, a section spreading mechanism, a section spread limiter. The section extension mechanism is made in the form of a vertical rod 4 and a horizontal bar 5 rigidly connected with it, at the ends of which the rollers 6 are fixed with the possibility of their movement along inclined grooves 3. The section extension limiter is made in the form of arc-shaped guides and a finger fixed in them on the corresponding sections, 1 C f-ly, 2 ill.

Description

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FIG. t

The invention relates to construction equipment and is intended for the construction of foundations without excavation.

The purpose of the invention is the expansion of technological capabilities.

FIG. 1 shows the tamping agent at the initial moment of the excavation of the pit, general view; in fig. 2 - the same, after deepening the pit to a predetermined depth.

The tamping device with a strap 5, which with the help of rollers 6, which are rolling down in inclined grooves 3, pushes sections 1 off. At the end of the sliding sections 1 to an predetermined value, the guide shank with anvil and falling weight is disconnected from vertical rod 4 and the eyelet 9 is attached to it. By tensioning the cable attached to the eyelet 9, the vertical rod 4 together with the horizontal bar 5 and its

Vanov contains the base machine with the boom rollers 6 lifted upwards, with the role- Sne shown), the tamping organ, the tracks 6, rolling in the inclined grooves 3,

The hinged of vertical sections hinged at the top of sections 1 with adjoining internal cavities 2 and inclined grooves 3 in them, the mechanism for sliding sections 1 consisting of a vertical rod 4 and a horizontal bar rigidly connected to it 5, at the ends of which are placed rollers 6 with the possibility of movement along inclined slots. 3, and a transfer plate 7 with a hole 8 for gripping during its lifting. The upper end of the vertical rod 4 is connected to the opening 9 or to the guide rod 10, provided with an anvil and a falling weight, by means of a bolted connection 0. The section opening angle

15

section 1 is pulled to the center, after which the tamping unit is freely removed from the constructed trench. Then the transmission plate 7 rises from the pit.

When tamping down the trenches with a positive slope of the walls in unstable soils, such limiters 11 of the expansion of sections 1 are installed, at which the stability of the walls and the angle necessary for the free raising of the tamping organ during the construction of the trench is ensured. After the trench is deepened to a predetermined depth, the tamping unit and then the transfer plate 7 are removed from it.

Construction of pits with vertical

regulated by interchangeable arcuate walls is no different from exhausting

vyvani ditches taper down. The difference is only in the installation of the corresponding spread stops 11.

control, movably fixed in the arcuate grooves from the ends of section 1 with bolts. Shields (not shown) are installed between the sliding sections 1 and the ends of the tamping body to eliminate the ingress of soil.

The device works as follows.

When the trenches are tamped down with a negative slope of the walls after installing the transfer plate 7 on the site of the constructed trench, it is driven into the ground by a tamping body suspended by the eye 9 to a predetermined depth. At the same time, at the time of the fall of the tamping organ, its sections 1 are shifted, i.e. in contact with each other by internal surfaces. After striking the transfer plate 7 of section 1, sliding their bottom surfaces along the inclined planes of the transfer plate 7, the size of the spread of section 1 is limited by the spacing limits 14 of the slide. At the end of the deepening of the transfer plate 7 to a predetermined depth, with the rammer raised, the stops 14 are replaced with others that are necessary to obtain the specified slopes of the excavation walls. Then the rammer is installed in the trench on the transfer plate 7 and the eyelet 9 is replaced with a guide bar with an anvil and a drop weight on it. Then, by reciprocating the falling load,

a strap 5, which with the help of rollers 6, rolling down in inclined grooves 3, pushes sections 1. When the sections 1 are moved up to a predetermined value, the guide shank with anvil and falling weight is disconnected from the vertical rod 4 and attached to there is a hole 9. By tensioning the cable attached to the eye 9, the vertical rod 4 together with the horizontal bar 5 and its

section 1 is pulled to the center, after which the tamping unit is freely removed from the constructed trench. Then the transmission plate 7 rises from the pit.

When tamping with a positive slope of the walls in unstable soils, such limiters 11 of the expansion of sections 1 are installed, at which the stability of the walls and the angle necessary for the free raising of the tamping organ during the construction of the excavation is ensured. After the trench is deepened to a predetermined depth, the tamping unit and then the transfer plate 7 are removed from it.

Construction of pits with vertical

the walls are no different from

 the walls are no different from

0

0

vyvani ditches taper down. The difference is only in the installation of the corresponding spread stops 11.

Thus, the proposed device for pulling out the pits, containing a tamping body in the form of a truncated wedge with a top down, made of vertical sections fixed at the top, of the transfer plate, wedge-shaped top up, the sector sliding mechanism and the guide rod with an anvil and a falling weight on it, allowing It is necessary to construct pits with positive, zero and negative slope of the walls, depending on the strength and stability of the soil. Therefore, the proposed device is versatile and acceptable when tamping pits in any subsiding soils.

Claims (2)

1. A device for the formation of trenches containing a tamper in the form of hingedly connected vertical sections in the upper part, each of which has an internal cavity with a sliding mechanism placed inside it and a limiter for the separation of the sections, in order to expand the technological capabilities expansion of sections is made in the form of a centrally located vertical rod with rigidly fixed the guide rod is struck 55 at its lower end by a horizontal bar with end rollers, in the cavity of the tamper there are slots inclined to its base, in which they are mounted with along the anvil, which are transmitted to the vertical rod 4. The vertical rod 4 is lowered down along with the horizontal of its lower end by a horizontal bar with face rollers, in the tamping cavity there are slots inclined to its base, in which the movement of the strip's rollers, the vertical sections are made with arcuate grooves, and the limiter of the expansion of the sections is in the form of arcuate guides and fingers placed in them fixed to the respective sections. 2. A device according to claim 1, characterized in that it is provided with a transfer plate having a triangular shape in cross section, and the tamping sections are made with a curvilinear support surface interacting with the transfer plate. x Faye. 2