JPH0133528Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor with an excessive bending prevention device in which unit moving members are endlessly connected.

Conventionally, when driving an endless conveyor body by connecting adjacent unit moving members with hinges, the conveyor body may be bent excessively at the turning point at the end of the conveyor body, resulting in sharp angles. This creates resistance to the drive of the main body, which becomes an obstacle when driving the conveyor, and in particular, a non-powered conveyor may become unable to move.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and provide an excessive bending prevention device having a trapezoidal cross section and disposed on the inner surface of the conveyor body at each connecting portion of unit moving members.

Next, the present invention will be described by way of examples with reference to the drawings. In FIG. 1, a conveyor body A is constructed by endlessly connecting a large number of unit moving members 1 with hinges 2 on the inner surface of the conveyor body A. The unit moving member 1 generally has a rectangular parallelepiped outer shape, and a hollow member may be used if necessary. Since the unit moving member 1 has a rectangular parallelepiped outer shape, each of its side plates is in contact with the adjacent front and rear side plates so that the mutual rotation angle does not exceed 180°. The inner surface of the upper row of the conveyor body A is supported by a plurality of pulleys 3, and the outer surface of the lower row is supported by rollers 4. Also idler 6,7
are arranged at the bottom of the upper row of the conveyor body A. As shown in the figure, since the unit moving member 1 has a rectangular parallelepiped outer shape, the upper row portion does not bend due to contact between the side surfaces of the unit moving member 1. A protrusion 9 is provided protruding from the inner surface of each unit moving member 1. Further, a star-shaped wheel 8 is rotatably disposed inside the conveyor body A, and the projection 9 and the wheel 8 are in an engaged state. The conveyor overbending prevention device 10 of the present invention is installed at each end of the inner surface of the unit moving member 1. This excessive bending prevention device 10 has a trapezoidal cross section. The short top and bottom surface of the trapezoid is joined to the inner surface of the movable member 1, and the apex of the obtuse angle θ of the trapezoid is located at each connecting portion of the movable members 1. The excessive bending prevention device 10 does not necessarily have to have a trapezoidal cross-section, but may have any cross-sectional shape (triangular, polygonal) as long as it has an obtuse angle. Any obtuse angle θ is selected as necessary within the range of 90°<θ<180°.

Now, when the conveyor in Figure 1 is driven from right to left as shown by arrow B, at the turning section at the end of the conveyor,
The excessive bending prevention device 10 acts to prevent the conveyor body A.
moves in an arc as a whole and does not encounter any resistance. FIG. 2 shows a case where the overbending prevention device 10 of the present invention is not installed, and the conveyor body forms an acute angle at C, creating a large resistance to driving.

In FIG. 1, the star-shaped wheel 8 engages with the protrusion 9, and when the conveyor is installed horizontally and is driven by power, this star-shaped wheel 8 can also be driven by power; When operating without power, the conveyor movement can also be assisted by driving power to the star wheel.

Since the present invention has the above-described structure, the angle C (see FIG. 2) formed by the bent portion between adjacent unit moving members 1, 1 is always an obtuse angle and does not cause resistance during conveyor movement. In addition, the contact between the side plates of unit members 1 prevents deflection of the conveyor between the pulleys, and the contact between the star wheel and the protrusion installed on the inner surface of the unit moving member separates the pulley from the lower moving part. Eliminates frictional resistance and reduces conveyor driving power.

In the above embodiment, the rectangular parallelepiped unit moving member 1
Although the description has been made for the case of a conveyor body in which the parts are connected by hinges, the excessive bending prevention device of the present invention is generally applicable to chain conveyors, slat conveyors, bucket conveyors, etc., which have pitches, that is, unit moving members.
It is effective for things other than belt conveyors such as pan conveyors, which have infinitely small pitches. It is also effective for both horizontal, powered types and tilted, non-powered types.

[Brief explanation of the drawing]

Fig. 1 is an explanatory side view of a conveyor with a unit moving member equipped with the excessive bending prevention device of the present invention, and Fig. 2 is a side view illustrating the shape of a conveyor of the same shape as Fig. 1 when it is driven without the excessive bending prevention device. It is a diagram. DESCRIPTION OF SYMBOLS 1... Unit moving member, 2... Hinge, 3... Pulley, 4... Roller, 8... Star wheel, 9... Protrusion, 10... Excessive bending prevention device.

Claims (1)

[Scope of utility model registration request] In a non-powered conveyor for installation on an inclined surface, which has a connection section in which a plurality of unit moving members 1 are connected in an endless manner with hinges 2, the upper endless conveyor is connected to pulleys 3 provided slightly inward from the turning sections at both ends of the conveyor. The lower endless conveyor is supported by rollers 4 provided below it, and each unit member 1 has front and rear edges adjacent to each other of a side plate fixed along the traveling direction. Constructed so that the angle between the adjacent unit moving members in contact with the edge of the side plate does not exceed 180° with respect to the endless inward direction,
In addition, a protrusion 9 is provided on the endless inner surface of each unit moving member 1, and a conveyor excessive bending prevention device 10 is further provided that has an obtuse angle θ in the cross section and the top of the obtuse angle θ is located at the connecting portion of the unit moving member. A non-powered conveyor with an excessive bending prevention device, characterized in that a star wheel 8 is provided which engages with the protrusions on the endless load side and non-load side.