JPS59152806A - Concrete mixer, mixing tank thereof is raised or lowered - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] When mixing concrete, this invention reduces work effort by changing the height from the floor of the mixing tank between when raw materials are input and when concrete is discharged after mixing. Examples thereof will be described below with reference to the drawings.

A gear (2) is fixed to a mixing tank (1) that is installed so as to be able to freely rotate around an autorotation shaft (3), and a small gear (5), a rotation shaft (8), and a reduction gear train are meshed with the gear (2). (9)
(10) and motor (11) rotate the mixing tank (1) at an appropriate speed.

On the other hand, the tank reversal shaft (4), through which the rotation shaft (8) passes concentrically through a bearing, has an arch-shaped arm, and the rotation shaft (3) is fixed to the tip of the arm. A worm wheel (7) for reversing the tank is fixed to the other end, and is supported by a bearing box (6) via a bearing.

The bearing box (6) supports the motor (11) and is pivotally connected to the machine base (17) via a swinging fulcrum shaft (12) that is integrated with a worm that engages with the tank reversing worm wheel (7). The one-third circle worm wheel (13) fixed to this bearing box (6) with bolts (14) is attached to the machine base (17).
It meshes with a swinging worm (15) that is pivotally mounted on a bearing (19) attached to the shaft.

The tank reversing handle (18) is fixed to one end of a swinging fulcrum shaft (12) that is integrated with the worm, while the lifting handle (16) is fixed to the shaft end of the swinging worm (15). .

In this concrete mixer, the lifting handle (
16) to lower the mixing tank (1) to the position shown in Figure 3, and then input the raw materials.Turn the lifting handle (16) to lower the mixing tank (1). 1 to the position shown in Figure 1. After that, turn the tank reversing handle (
By rotating the mixing tank (18), the rotation axis (3) of the mixing tank (1) is held at an appropriate inclination via the tank reversing worm wheel (7) and the tank reversing shaft (4), and the motor (11) )
The mixing tank (1) is rotated by the rotation of the mixing tank (1) to perform the mixing operation. Once mixing is complete, turn the tank inversion handle (18)
By rotating the mixing tank (1), the mixing tank (1) is rotated to the tank reversing axis (4
), and the mixture inside the tank is discharged to the outside.

With conventional concrete mixers, the height of the mixing tank from the floor cannot be changed, so if the mixer is installed at a height that takes into account the height difference between the container and the container that receives the concrete discharged during discharge,
When feeding raw materials, they must be fed at the same height, and when manually feeding the raw materials, the weight of the fed materials becomes large, and a large amount of labor is required, resulting in increased worker fatigue.
There were restrictions on the number of workers depending on their physical strength. Also,
When a conventional concrete mixer is used by being loaded onto a lifting table that moves up and down with power, the weight of the entire device becomes large, and the nature of the work makes it difficult to transport to a construction site, so it is not put into practical use.

When using the concrete mixer according to the invention:
The height of the mixing tank that is suitable for each time of inputting raw materials and discharging the mixture can be easily obtained, so the above problems are solved, and the weight of the entire device is not much different from conventional ones, so there is no problem in transportation. It's a bad thing.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the invention. Figure 2 is A of Figure 1.
-A sectional view. FIG. 3 is a side view when operated in a different state from FIG. 1. Patent applicant Kiyoshi Ajima

Claims (1)

[Claims] Supports the rotation axis of the mixing tank that can rotate with appropriate power,
In addition, a swinging fulcrum shaft is installed at an appropriate position on the bearing box to which the tank reversing shaft, which rotates around a straight line perpendicular to the rotation axis, is pivoted, and the bearing box is swung around this fulcrum shaft. A concrete mixer characterized by being able to change the height of the tank from the floor surface as appropriate.