JPH09315538A - Safety device of grain conveying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a chain from being skipped and a shaft from being broken caused by biting of grains between a flight chain and a driving sprocket, by reliably removing grains near the sprocket on the grain discharging side when the grains in conveyance are placed on the lower side of the flight chain. SOLUTION: A flight chain 6 provided with many conveying vanes 5 is horizontally stretched between a driving sprocket 3 provided on one end of a grain conveying gutter 2 and a driven sprocket provided on the other end to constitute a flow conveyor. A rotary brush 12 for flicking grains placed on the lower side of the flight chain 6 is provided in the position near the driving sprocket 3 on the grain discharging side and on the lower side of the flight chain 6. The rotary brush 12 is forcibly rotated by obtaining power from the deriving source of the flight chain 6. The rotary brush 12 has such a shape as to flick grains to the outside in the rotating direction of the flight chain 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain transport gutter horizontally suspended between a drive sprocket and a driven sprocket provided at one end and the other end of the grain transport gutter, and a flow chain is horizontally suspended and flows. TECHNICAL FIELD The present invention relates to a safety device for a grain conveyor that constitutes a conveyor and that prevents the chain from jumping, the shaft being broken, or the like caused by the grain being caught between the flight chain and the drive sprocket.

[0002]

2. Description of the Related Art Conventionally, a flow chain is constructed by horizontally suspending a flight chain having a large number of carrier blades between a drive sprocket and a driven sprocket provided at one end and the other end of a grain transport gutter, respectively. The grain transfer machine
For example, there are those described in Japanese Utility Model Publication No. 7-30218.

[0003]

A grain transporter of this type discharges grain fed from a grain feeding section of a grain transport trough by rotating a flight chain equipped with a large number of transport wings to discharge grain from the grain transport trough. When a part of the grain being conveyed gets on the lower side of the flight chain, the grain is caught between the flight chain and the drive sprocket on the grain discharge side and is crushed. As a result, the diameter of the drive sprocket increases. If the diameter of the drive sprocket becomes large, the meshing between the drive sprocket and the flight chain will become inconsistent, which may cause chain jumping, or in some cases, the shaft of the drive sprocket will be broken, resulting in damage accidents. Eliminating grain on the underside of the flight chain is important for long-term safe use of this type of grain carrier.

Therefore, the present invention is intended to solve such a technical problem, and even if the grain being conveyed is placed on the lower side of the flight chain, the grain is discharged from the grain discharging side. To provide a safety device for grain transporters that can be reliably removed near the sprocket to prevent chain jumps, shaft breakage, etc. caused by grain being caught between the flight chain and the drive sprocket. That is the purpose.

[0005]

In order to achieve the above object, a safety device for a grain transporter according to the present invention includes a drive sprocket and a driven sprocket provided at one end and the other end of a grain transport gutter, respectively. In a grain transporter configured by horizontally suspending a flight chain equipped with a large number of transport blades to form a flow conveyor, the flight chain of the flight chain is located near the sprocket on the grain discharge side by the flow conveyor, on the lower side of the flight chain. It is characterized by the provision of a rotating brush that blows off the grains that have been placed on the lower side.

According to the present invention, in the above structure, it is preferable that the rotary brush is forcibly rotated by obtaining power from the drive source of the flight chain.

Further, in the present invention, it is further preferable that the rotary brush has a shape for ejecting grain to the outside of the rotation direction of the flight chain.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In FIGS. 1 to 3, reference numeral 1 is a grain conveyor. In this grain conveyor 1, a drive sprocket 3 and a driven sprocket 4 are provided at one end of a grain transfer gutter 2 which is horizontally installed, and a large number of drive sprockets 3 are provided between the drive sprocket 3 and the driven sprocket 4. Suspending the flight chain 6 with the carrier blade 5 of
This is a flow conveyor. Reference numeral 7 denotes a grain discharge unit, and a grain supply unit is provided above the grain transport gutter 2 (not shown). The grain transporter 1 is for loading and unloading grain into a grain dryer, a grain storage tank (neither is shown), and the like.

In the grain carrying machine 1, a drive motor 8 for rotatably driving the flight chain 6 is provided at one end of the grain carrying trough 2 on the grain discharging side. The drive motor 8 is a gear motor with a built-in reduction mechanism. This drive motor 8 pulley 9 and drive sprocket 3 pulley 1
0 is linked by a transmission belt 11.

A rotary brush 12 is provided at a position on the lower side of the flight chain 6 near the drive sprocket 3 on the grain discharge side to blow off the grain accumulated on the lower side of the flight chain 6. The rotating brush 12 is interlocked with the drive sprocket 3 so as to rotate at high speed forcibly, and wipes while rotating on the lower side of the flight chain 6.

As shown in detail in FIGS. 4 and 5, the rotary brush 12 has a mountain shape in the rotational direction with respect to the rotary shaft 13 and has grains on the outside thereof in the rotational direction of the flight chain 6. It has a shape that pops out.
The rotary brush 12 has appropriate hardness and elasticity to remove and eliminate the crushed grains that adhere and accumulate on the flight chain 6. The rotating brush 12 is replaceable, and when it is worn to the limit of use, it is replaced with a new one. Further, it is preferable to selectively use the rotating brush 12 having various hardness and elasticity according to the kind and the property of the grain to be conveyed.

As described above, in the embodiment, the rotating brush 12 is forced to rotate at a high speed in the direction opposite to the rotating direction of the flight chain 6 as shown in FIG. Needless to say, even if crushed grain adheres and accumulates, the adhered and accumulated grain is separated and removed by the rotating brush 12 next time, so that the grain is caught between the flight chain 6 and the drive sprocket 3. It is possible to prevent chain jumps and shaft breakage that may otherwise occur.

[0013]

According to the present invention, even if a grain being conveyed is placed on the lower side of the flight chain, the grain is surely removed in the vicinity of the sprocket on the grain discharge side, so that the grain can be removed between the flight chain and the drive sprocket. This has the effect of preventing the chain from jumping or the shaft from breaking due to being caught in the shaft.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the configuration of a grain conveyor according to the present invention.

FIG. 2 is an enlarged front view showing a partially cutaway main part of the grain conveyor according to the present invention.

FIG. 3 is a plan sectional view of FIG. 2;

FIG. 4 is a front view of a rotating brush.

FIG. 5 is a plan view of FIG.

[Explanation of symbols]

 1 Grain Conveyor 2 Grain Conveyor 3 Drive Sprocket 4 Driven Sprocket 5 Conveyor Wing 6 Flight Chain 7 Grain Ejector 8 Drive Motor 9 Pulley 10 Pulley 11 Transmission Belt 12 Rotating Brush

Claims (3)

[Claims] 1. A flow conveyor is constructed by horizontally suspending a flight chain having a large number of conveying blades between a drive sprocket and a driven sprocket provided at one end and the other end of a grain conveying gutter, respectively. In the grain transporter, a rotary brush is provided at a position on the lower side of the flight chain near the sprocket on the side where the grain is discharged by the flow conveyor, and a rotating brush that blows off the grain on the lower side of the flight chain is provided. Safety device. 2. The safety device for a grain conveyor according to claim 1, wherein the rotary brush is powered by a drive source of the flight chain to be forcedly rotated. 3. The safety device for a grain conveyor according to claim 1, wherein the rotating brush has a shape for ejecting grains to the outside of the rotating direction of the flight chain.