FI57157C - MASKIN FOER YTBELAEGGNING AV VAEGAR - Google Patents

Description

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Patent mMdelat ^ V ^ (51) Kv.lk. * / Lnt.CI. * E 01 C 21/00 FINLAND - FINLAND (21) P · * · "» · * '··' · '"™ -p« t * nt * n »6knln | 751982 (22) Hakamltptlvi — Araekntnpdaf 08.07-75 'F 1 * (23) Starting point — GUtlfhetadaf 08.07.73 (41) Tullut Julktaakal - BIMt effantlig 09.01.77

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Pfttant- och registarstyraisan v 'AflrtkM Utla | d odi utUkriftm publkarad 29 - 02.80 _ (32) (33) (31) Pyyhitty «uoJktut - Begird prlorltat (71) Pirkkalan Rakenne ja Vuokrakone Oy, Jousitie 10, 33960 Pirkkala 6,

Suomi-Finland (FI) "(72) Heikki Peltoniemi, Pirkkala, Suomi-Finland (FI) (7 * 0 Leitzinger Oy (5M Road coating machine - Maskin för ytbeläggning av vägar

The invention relates to a machine for coating roads so that the binder applied to the roadbed is collected by collecting means at the front of the machine in a mixing device in which the aggregate is mixed with aggregate. an endless conveyor belt starting from next to it, sloping to the top of the machine, for collecting aggregate from the road surface in proportion to the production of concrete.

Machines of this type have been proposed since the 1940s with the aim of producing concrete roads in such a way that the maximum production speed is achieved while labor costs are kept to a minimum.

However, in these known machines, insufficient attention has been paid to the dosing accuracy of the concrete components in order to maintain the first-class quality of the concrete despite the variations in the thickness of the aggregate layer to be collected, the driving speed and the like.

The object of the invention is to further develop said type of machine so that the concrete components can be metered with high accuracy while the concrete manufacturing and casting functions can be maintained continuously without interruption.

A machine according to this object, in order to achieve the invention is characterized in that below the conveyor belt on the return side captured the reverse channel for an additional aggregate, and below the conveyor belt upper end is provided with a balance as the dosing unit-quantity amounting to dispense the aggregate amounts of the concrete mixer, that it is also arranged an automatic weighing device controlled by the cement delivery device and the machine there are two parallel rock and cement dosing systems operating in succession. When the dispensing device provided with a balance amount to clear an kiviai-nesmäärän of the concrete mixer's below the conveyor belt on the return side an additional aggregate to be escape through the return passage. Thus, the layer thickness of the aggregate on the front of the machine can vary considerably, while the dosing remains at a predetermined constant value. Due to the fact that the machine has two parallel rock and cement dosing systems operating in parallel, the metered feed of ingredients can be better adapted to the operating cycles of the concrete mixer, i.e. pre-weighed amounts of proportionate aggregate and cement are available immediately after emptying the concrete mixer.

The invention will now be described with reference to the accompanying drawing, which schematically shows a side view of a machine according to the invention.

the front of the machine is a steel brush 1, which collects in proportion to the aggregate layer 2 on the conveyor belt 3. The conveyor belt 3 carries the rock material in a dispenser 4, the dosing device of the four connection punnitusvaaka detects the desired aggregate amount of a dispensing device, turns the delivery device on the ground of the arrow as illustrated according to the aggregate number contained in the drains of the concrete mixer 5.

From the cement tank 6, the screw conveyor 7 conveys the cement to the cement hoist 8, the bottom of which is controlled by an automatic weighing device to open to empty the desired amount of cement into the concrete mixer 5. The operating speeds of the belt 4 and the screw conveyor 7 can be adjusted.

3 by 57157 periods. The operating periods of the dispensers are dimensioned to correspond to the emptying periods of the mixer 5. To ensure continuity of operation and to avoid casting interruptions, two parallel, alternating aggregate and cement dosing systems have been arranged. The water tank 9 is led to the mixer 5 by means of a water dosing pump.

The mixer 5 is of a self-draining type known per se, which discharges the concrete mass into a tank 10 of a concreting machine, the lower end of which has means 11 for lowering the desired, adjustable thickness concrete mass layer 12 to the road surface.

Claims (1)

A machine for coating roads in such a way that the binder applied to the road surface is collected by collecting means at the front of the machine in a mixing device in which the aggregate is mixed with aggregate and from which the finished coating mass is a wire brush (1) and the next beginning to collect, obliquely in proportion to the upper part of the machine to, an endless conveyor belt (3) for the production of concrete aggregate from the road surface, characterized in that the conveyor belt (3) below the return side is captured in the return channel for additional aggregate, and below the conveyor belt (3), the upper end a dosing device (4) with a scale is provided for dosing a certain amount of aggregates into the concrete mixer (5), and a cement dosing device (8) controlled by an automatic weighing device is also provided, and e This machine has two parallel alternating dosing systems for aggregates and cement (4 and 8).