SU25465A1 - Concrete mixer - Google Patents

Description

The present invention relates to a concrete mixer equipped with an automatic metering device.

In FIG. 1 depicts a top view of a concrete mixer; FIG. its side view; FIG. 3 is a longitudinal vertical section; FIG. 4 - cross section; FIG. 5 and 6- details of the concrete mixer.

The concrete mixer is equipped with two bins 1 and 2, having movable throats 3 and 4, which end with hinged doors 5 with cables 6 and 7 attached to them. Cable 6 is pulled to sector 8 of electromagnet 9, and cable 7 to sector 10 of electromagnet 11. Under lower the walls of the throats 3 and 4 reinforced the legs 12 resting on the teeth 13 of the drum 34 of the concrete mixer, having a gear rim 15, cast together with the gear 13. On the one side the drum 14 has a bottom with a round hole 53, and on the other side is open and covered with -shaped onwards 58, which he relies on rollers 16. Inside drum 14 has ten spiral-shaped ribs 17 and three plates 18 each with slightly raised edges. A cylindrical tank 19 is installed to the right of the bins 1.2, inside of which the screw with blades 20 rotating with holes 54 is rotated. In the diaphragm 21 separating the cylindrical tank 19 there is a hollow shaft 22 around the hollow shaft 22, which connects the upper compartment of the tank with the lower compartment. Above this

hole on the shaft 22 fortified disc 24, covering the hole. Below the hollow shaft 22 has an opening 25 and at the very end the gear 26 on the tightening sleeve. Under the end of the shaft 22 is placed a funnel 27; inside it there is a cone 29 on the double-blade plate 28, which, thanks to the cut finger, can be screwed out of the plate 28 and tightly close the hole at the end of the shaft 22. At the very cone 29 the solder plate 30, the end of which passes inside the shaft 22, slides along its walls during rotation auger. The tube 31 of the funnel 27, at its lower end, enters the casing 32 of the dosing device.

The dosing device consists of cups 33 and 34 without a bottom, having the ability to move up and down in the covers 32, inside of which there are obliquely cut plates 59 - limiting the movement of the cups down. At the top, to prevent the cups from popping out, the edges of the covers are folded inward. The lower ends of the covers 32, connected into one common casing, exit through the round hole 53 into the drum 14. At the bottom, the cups 33 and 34 are closed with covers 36 and 37, which, thanks to weights 38 mounted on the levers 39 of covers 36 and 37, can hold the cups in the casing in the upper position, tightly closed. Plastics 59 and cups 33 and 34 are connected separately through wires to an electric battery.

With electromagnets 40, 9 and 11, the electric circuit is in the open state at the top position of the cups 33 and 34 (wires are not shown in the drawing). On the axis of the levers 39 of the covers there is a common rod connected via cable 42 to sector 55 of electromagnet 40. Behind the drum 14 is an electric motor 56, which rotates the counter drive 43, from which gear 44 rotates in gear with gear 26, which in turn rotates screw 20. From the other pulley 57 and the drive 43, rotation is transmitted to the shaft 45, on the end of which a gear 46, rotating the drum 14, is mounted. Under the bearing 47, a lever 48 with a pair of rollers 49 at the end is fixed. The rollers are included in the electrical circuit of the cups 33 and 34 and the plates 36 and are in contact with each other, thereby closing the contact of the network. With the shaft 50, a disc 51 of insulating material with a recess 52 rotates.

The work of the concrete mixer is as follows. Sand is loaded into the bunker 1, 2 crushed stone is loaded into the bunker, and tank and cement are filled with water and tank 19. The electric motor begins to rotate through the counter drive 43 and the gears 26, 44 and 46 of the screw in the tank 19 and the drum 14. The cement mixed by the screw connects to water and forms a fine milk that leaks through the holes 54, since the screw itself rotating, raises the cement upward for better mixing. From the upper compartment of the tank 19, the milk leaks between the disk 24 and the diaphragm 21 into the lower compartment, where it again passes through a mixing stage similar to the previous one, and finally, reaching the bottom of the tank 19 through the hole 25 in the hollow shaft 22 of the screw begins to pour into the funnel 27 and through the tube and the casing 32 falls into the drum 14. Meanwhile, sand and rubble in pride 3 and 4 fall into the cups 33 and 34.

As soon as one of the cups, the filling speed review, loads so much that it outweighs the load 38, it now drops down onto the cut-off plates 59 and the electric circuit: cup 33 or 34, electromagnet 9 or 11, battery. Electromagnet 9 (or 11J will start to act and bring sector 8 (or 10) to the surface of b Aban 14, which, rotating, lifts the sector along its surface to the top (due to the force of friction), and the last

t not for a cable 6 (or 7). Since this cable is connected to the throats of the bins, one of them will lift up and stop the movement of the material in the cup. When the second bowl is filled, the second throat lift described above is repeated and at the same time the second cup closes the network with an electromagnet 40, which in the same way does not sweat up beyond the common rod 41 and the cable 42 levers with weights 38 and opening the covers 36 and 37 , will allow the material through the casing 32 to get into the drum 14. One of the weights 38, when lifting up, hits the lever 48, which, rising, covers the disk 51 with its rollers 49, which disconnects the circuit (Figs. 5, 6) and electromagnets 40, 9, and 11 release sectors 8,10 and. 55; from this throat, 3 and 4 are dropped to cups 33 and 34, and covers 36 and 37 will slam cups that smoke upwards and the process will be repeated again. As soon as cutout 52 comes to rollers 49, they are combs and the lever will fall down to its original place. For softness of lowering the loads 38 to the common rod 41, the cataract 60 is captured. The material (sand, crushed stone and cement milk), having got into the drum 14, is mixed in it and pushed by the ribs 17 forward to the exit; the plates 18 do not allow the material to slide along the walls of the drum 14. The plate 30, sitting on a fixed cone, protects the channel of the rotating hollow shaft 22 01 of the buildup of a layer of cement

The subject matter of the invention

Claims (3)

1. A concrete mixer, characterized in that the hoppers 1.2 for crushed stone and sand are rotatable on horizontal axes of the throat, driven by teeth 13 on the toothed rim 15 of the drum 14, vertically movable cups 33 are used to dispense the same crushed stone and sand, 34 with a separate bottom, pressed by levers 39, carrying a counterweight 38 whose arm also serves to lift the lever 48 with the contact device, and, finally, to stop the inflow: rubble and sand are used to lift the discharge end of each throat the drum 14 and the sectors 8.10 of electromagnets that are carried along by it at the closing of the current. caused by the lowering of one of the cups 33,34 on the corresponding contact plate. 2. At a concrete mixer according to p-1 application, for feeding into the mixing drum 14 a mixture of cement and water in the form of cement milk, a cylindrical tank 19 with a 54-screw on the vertical hollow shaft 22 having blades x 20 holes. 3. In the case of a concrete mixer according to claim 1, use a diaphragm 21 that separates a cylindrical tank 19 in height into two parts, the central opening of which is slightly wider than j of the diameter of the hollow shaft 22 and covered by a disk 24 fixed to the latter,  ./ J f, -.  „FTj (i --- aX Vijrt- - V: i -  .i fvJKT Jb-i- i .. -T Tmrjfy m: / I 11 W: M yw -...