JPH0513525Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial Application Field>> This invention relates to a concrete pouring machine for pouring concrete into a molding frame of a concrete block.

<Conventional Technology> Conventionally, a concrete feeding machine has been used in which a screw conveyor is installed under a hopper and concrete is sent out from the tip of the conveyor.

<<Problem to be solved by the invention>> In conventional concrete pouring machines, the shaft of the screw itself is supported by a bearing, and it was necessary to disassemble the bearing when extracting the screw. For this reason, it is not easy to wash away the concrete remaining inside the screw conveyor after use.

The purpose of this invention is to solve such problems in concrete pouring machines.

<<Means for Solving the Problems>> The concrete feeding machine of this invention consists of a hopper that receives concrete and a screw conveyor that transports the concrete falling from the hopper in the lateral direction. The screw conveyor includes a screw, a cylindrical housing enclosing the screw, a spindle supported through a bearing at the rear of the housing and driven by a motor, and a shaft that rotates the screw so that the screw can be removed in the axial direction. It consists of a slip joint connected to the spindle, and a pin inserted into the housing through a hole drilled in the housing when the screw shaft is removed.

<<Operation>> When removing the screw, first insert the pin into the housing and use the motor to rotate the spindle in the opposite direction. Then, the screw rotates while rubbing against the pin, and is restrained by the pin and pushed forward. Eventually, the sliding joint comes off and the screw separates from the spindle.

<<Embodiment>> In FIG. 1, symbol A is a hopper, below which a housing 1 of a screw conveyor B extends horizontally. A bearing 2 is attached to the rear end of the housing 1, and a spindle 3 is rotatably supported by the bearing 2.

Reference numeral 4 designates an electric motor, and sprockets 5 and 6 are fixed to the motor shaft and spindle 3, respectively, and both sprockets are connected by a chain 7.

The screw 8 has a blade 8 around the shaft 8a.
b is wound spirally.

The screw shaft 8a and the spindle 3 are connected by a slip joint 9. That is, as shown in FIG. 2, the rear end of the screw shaft 8a has a hexagonal cross section, and the end of the spindle 3 has a hole 10 with a hexagonal cross section, into which the screw shaft is inserted. The corner portion 11 is fitted and the two shafts are connected. If you pull the screw 8 in the axial direction, the corner 11 will open into the hole 1.
Get out of 0.

Reference numeral 12 is a hole drilled in the housing 1, and reference numeral 13 is a pin inserted into the housing through this hole.

Reference numeral 14 is a disc attached to the screw shaft 8a in order to shield the bearing 2 from concrete.

This concrete pouring machine is constructed as described above, and normally, when the motor 4 is rotated, the spindle 3 and the screw 8 are rotated counterclockwise (as indicated by the arrow in the figure) via the chain 7. In this way, when concrete is poured from the hopper A, the concrete falls into the housing 1, is pushed forward by the blade 8b of the right-handed screw 8, is sent out from the tip of the housing 1, and falls into a formwork (not shown).

When removing screw 8 for cleaning etc.
Insert the pin 13 into the hole 12, rotate the motor 4 in the opposite direction, and turn the screw 8 in the direction opposite to the arrow. Then, the screw 8 rotates while rubbing against the pin 13, is restrained by the pin 13, and is pushed forward, and the sliding joint 9 is removed. The screw 8 separated from the spindle is pulled out of the housing 1.

《Effects》 In the concrete pouring machine of this invention, the shaft of the screw and the spindle are connected by a slip joint, so by inserting the pin into the housing and turning the spindle in the opposite direction, the slip joint is released and the screw is connected to the housing. It has the effect of being able to be easily extracted from outside.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the concrete pouring machine, and FIG. 2 is an explanatory diagram of the slip joint. A... Hotsupa, B... Screw conveyor, 1
... Housing, 2 ... Bearing, 3 ... Spindle, 4 ... Motor, 8 ... Screw, 9 ... Slip joint, 12 ... Hole, 13 ... Pin.

Claims (1)

[Scope of utility model registration request] The screw conveyor consists of a hopper A that receives concrete, and a screw conveyor B that laterally transfers the concrete that falls from the hopper. a spindle 3 supported via 2 and driven by a motor 4;
and a slip joint 9 connecting the shaft of the screw to the spindle so that the screw can be pulled out in the axial direction.
A concrete pouring machine comprising a pin 13 inserted into the housing through a hole 12 drilled in the housing when the screw shaft is removed.