SU1600966A1 - Agitator truck - Google Patents

Abstract

The invention relates to devices for preparing and transporting a concrete mix and allows for improved work efficiency. The mixer truck contains a vehicle with a mixing drum 2 having a bottom 5, with mixing blades, a coaxially mounted shaft 6 with vanes, a drive 7 of reversible rotation with a clutch 8 on. Spiral blades are made in the form of sections 3 and 4, section 3 is fixed on the inner surface of the drum, section 4 - on the shaft 6 with a gap relative to the body. The clutch is made with the possibility of contact with the shaft 6 and the housing of the drum 2. The mixer truck can be equipped with radial blades fixed on the inner surface of the drum 2 between the blades of section 3 at the bottom 5. 1 Cpf-ly, 3 Il.

Description

one

(21) 4440772 / 23-33

(22) 06/15/88

(46) 23.10. 90. Bul, No. 39

(71) Moscow Scientific and Production Association for Construction and Road Engineering VNIstroy-Dormash

(72) V.I. Sidorov, V.Z. Semenchenko, B.G.Lyzo, A.I.Ilin, N.A.Ivanov, S.A. Kudelin and V.I. Khazov

(53) 621.929.9 (088.8)

(56) Application of the Federal Republic of Germany No. 2611054,

cl. In 28 C 5/42, published. 1980

(54) AUTOMATIC MIXER

(57) The invention relates to devices for preparing and transporting a concrete mix and will allow;

improve work efficiency. The mixer truck contains a vehicle with a mixing drum 2, an immersion bottom 5, with mixing blades, a coaxially mounted shaft 6 with vanes, a reverse rotation drive 7 with a clutch 8 on. Spiral blades are made in the form of sections 3 and 4, section 3 is fixed on the inner surface of the drum, section 4 - on the shaft 6 with a gap relative to the body. The inclusion clutch is arranged to contact the shaft 6 and the drum casing 2. The mixer truck can be equipped with radial blades fixed on the inner surface of the drum 2 between the blades of section 3 at the bottom 5. 1 c.p. f-ly, 3 ill.

SL

The invention relates to the construction, namely to devices for preparation and transportation (concrete mix.

The purpose of the invention is to increase work efficiency.

FIG. 1 shows an auto concrete mixer, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 — auto mixer with a gear coupling and additional paddles.

: The mixer truck consists of a vehicle 1 and mounted on it with the ability to rotate; mixing drum 2, in the core of which a single multiple spiral j-: onacTb is installed, consisting of two sections 3 c 4. 4. One section 3 spiral-shaped guasti fixed to the inner walls i: e of the mixing drum 2, and the other located on the bottom side 5 of the bafaban 2, section 4 of the spiral-shaped lobe Ti are rigidly fixed on the shaft 6 and installed with a gap relative to the drain of the drum 2. Shaft 6 directly- Yo connected to 7 rivodom reverse rotation. Between the shaft 6 and the drum 2, a clutch 8 is mounted.

The walls of the drum 2 can be equipped with additional radial blades 9 located between sections 3 and 4 of the spiral-shaped blade. Mixer works as follows.

During the loading of the mixture, the clutch 8 is set in a position in which the shaft 6 is rigidly connected to the drum 2, as a result of which, when the shaft 6 rotates, the drum 2 is rotated. After the mixture is loaded, the clutch 8 separates the shaft 6 from the drum 2. The mixture is driven by section 4 of the blade.

The mixture moved by them acts on the blades of section 3 rigidly connected to the drum 2, as a result of which the torque is transferred from the shaft 6 to the mixing drum 2, due to which the latter is rotated. This facilitates also the radially fixed blades 9. As the loose mixture is mixed, its rheological characteristics change, which leads to a mutual slippage of the shaft 6 relative to the drum 2, and the more the mixture is plasticized, the greater the slippage of the drum 2 relative to the shaft 6. Thus , determining the amount of slip as the difference between the speed of rotation of the shaft 6 and the speed of rotation of the mixing drum 2, which can be determined using a tachometer or using any other known The leg device, you can see the degree of readiness sme- B in the drum 2.

Intensive mixing of the mixture is achieved due to the fact that the spiral-shaped blades of section 4 forcefully move the material from the bottom 5 to the blade and 6 seconds, and then get into the zone of action of the blades 3, the material is mixed by the gravity method while feeding it to the bottom 5 of the drum 2, after which the cycle repeats.

To unload the mixture, the clutch 8 connects the drum 2 with the shaft 6. The blades of sec. 4, rotating with. drum 2, move the mixture to the blade m sections 3, which pick it up and served to the place of discharge.

Claims (1)

1.Auto-concrete mixer, containing a mounted hp with the possibility of rotating on a vehicle a mixing drum with a bottom and with spiral vanes, a coaxially mounted shaft with blades, a reverse rotation drive with an activation clutch, characterized in that, in order to improve the working efficiency, the spiral blades made in the form of two sections, one of which is fixed on the shaft with a gap relative to the housing, and the other - on the inner surface of the drum, and the start-up clutch - with the possibility of contact with the shaft and housing the drum. 2, Concrete mixer truck according to claim. 1, characterized in that it is provided with additional radial blades fixed on the inner surface of the drum between the spiral blades at the bottom of the drum.