SU1313783A1 - Pneumatic concrete placer - Google Patents

Abstract

The invention relates to machines for the pneumatic transportation of concrete mixtures. The purpose of the invention is to reduce the loss of compressed air and increase reliability. The pneumatic concrete spreader contains a chamber 1 with a loading opening 5, a receiving funnel 18, a cover 6 between them, moved horizontally by the cylinders 17 by means of a strip 11 with a wedge 9 and a string 12 SW "117 d IBS 17 ate Fie1

Description

14. In the upper part of the chamber there are fixed horizontal guides 10 with a stop 16. On the upper surface of the key 6, inclined guides 8 are installed. The wedge 9 is placed between the horizontal 10 and inclined 8 guides. Plank 1I is provided with movement limiters 15 relative to cover 6. In chamber 1, through the inlet opening 5, with the cover open, concrete mixture is fed. To close the lid 6 of the loading opening 5, the cylinder rods 17 move the plan. The invention relates to machines for conveying concrete mixtures.

The purpose of the invention is to reduce the loss of compressed air, improving reliability.

FIG. I shows the pneumatic side layer, general view; in fig. 2, the same plan view; in fig. 3 is a view A of FIG. one; in fig. 4 - section bb in fig 3; in fig. 5 shows a section B-B in FIG. .four; in fig. 6, - a cover in a distance and a position

Pneumatic paver includes a welded chamber 1, a spherical bottom 2, which ends with a concrete line 3. An apron 4 is welded to the inside of chamber 1, opposite the concrete pipe 3, under which compressed air is supplied to completely clean the chamber .1 from concrete. Loading hole 5 of chamber 1 it is closed by a lid 6, the bottom plane of which is lined with rubber 7. On the upper plane of the lid 6, inclined directional 8 (for example, a dovetail tail) are rigidly fixed, placed symmetrically relative to the horizontal axis of the Krish 6 with a slope to pex degrees relative to the horizon in the direction of opening the 1Ki 6 and 6, which are mounted with a capacity of 9, moving also along the horizontal guide 10, rigidly fixed on the upper part of the chamber 1 at the inlet opening 1 1 with wedges 9 along the guide 10 through the spring 14 against the stop of the key 6 into the stop 16. With the further movement of the strip 11, the spring 14 is compressed and the wedge 9 moves along the inclined guides 8 of the cover 6, lowering it vertically. After the concrete is dispensed, the cylinder rods 17 move the bar 11 with the wedges 9 in the opposite direction along the guides 8 of the crankshaft 6, which rises and beyond the stops 15 moves the cover 6, opening the charging opening 5 of the chamber 1. 6 Il.

5, and the wedge 9 is connected by a strap 11, in the center of which the cup 12 is rigidly fixed with a movable bottom 13 and a spring 14 interacting with the end of the lid: 6, which is provided with limiters 15 for moving the strap 11 relative to the lid 6,. on the horizontal guides 10, an emphasis 16 is rigidly fixed,

horizontal horizontal movement

covers 6. The ends of the strap 11 are fixed to the rods of two pneumatic cylinders 17 rigidly fixed along the roofs 1si 6 on horizontal guides 10. In the upper part of chamber 1, above above krash1- koy 6, there is a receiving hopper 18. The pneumatic concrete paver works as follows.

After installation of the pneumatic concrete spreader and betonovod 3 at the construction site, through the receiving funnel 18, the loading opening 5 with the open roof 6 into the chamber 1 is loaded with concrete mix. B stock. Cavity pneumatic cylinders 17 serves compressed air. The rods move the bar 11 with the wedges 9 along the grooves of the horizontal guides 10 through the spring 14

Until the cover 6 rests against the stop 16. With further movement of the strip 11, the spring 14, which is in the glass 12 with the adjusting bottom 13, is compressed, the wedge 9 moves along the inclined guides 8 of the cover 6, moving the cover 6 vertically downwards, closing the lower lanes

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With a rubber lining 7, the loading opening 5 of chamber 1. Then, by supplying compressed air to chamber 1, the concrete is transported through the concrete line 3 to the place of its installation. After discharging the concrete from the chamber 1 by supplying compressed air under the apron 4, clean the bottom 2 of the chamber 1 from the remaining concrete, open the lid 6, to do this, pressurized compressed air is supplied to: - the pneumatic cylinder 17, the strip 11 with wedges 9 moves in the inclined direction 8 of the cover 6, but since the force from the compressed spring 14 does not allow the cover 6 to move along with the wedges 9, it rises to the distance N. Planck And passes the distance C to the stops 15 and for the last moves the cover 6, opening the loading opening 5 cameras 1.

After that, the cycle repeats.

The interaction of the inclined guides 8 and the wedges 9 provides the self-braking effect of these two rubbing pairs, which excludes the possibility of accidentally opening the cover 6 of the pneumatic concrete paver with pneumatic cylinders 17

7834

at the moment when camera 1 is located under

pressure.

Claims (1)

Invention Formula A pneumatic concrete paver containing a receiving funnel placed vertically one above the other, a chamber and a space between them with the possibility of horizontal movement of the roof with inclined towards its opening by means of rigidly fixed symmetrically with respect to the horizontal axis of the cover so that, in order to reduce compressed air losses and increase reliability, it is rigidly equipped horizontal guides attached to the upper part of the chamber above the cover with an emphasis limiting the horizontal movement of the se- cond. 0 wedged mi set between. corresponding horizontal and inclined guides with the possibility of longitudinal movement in the latter and connected by a strap, spring-loaded relative to the cover, and movement restrictions on the strap relative to the shank, fixed: on the latter, while the inclined guides are mounted on the top 30 cover. FIG. g 1313783 Buff A 15 5 JO 7 / /five FIG 3 -J FIG 5 Editor V. Kovtun Compiled by E. Guchkova Tehred A. Kravchuk Proofreader. Cherni Subscription Order 2174/22 Edition 778 VNIIPI State Committee ouur for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab.,. /five Proizvod-den-poly FYch the company. Uzhgorod, st. Design. four F14.6 Subscription