JPS6030250Y2 - belt conveyor device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a belt conveyor device for conveying grain to be dried in, for example, a grain drying system, and in particular, on the back side of the belt, a large number of left and right pairs are arranged at predetermined intervals in the longitudinal direction. The carrier roller is installed in a V-shape when viewed in the direction of belt movement (front view) to support the belt, thereby bending the belt in a ■-shape and making it possible to convey powdered grain. This relates to improvements in the arrangement structure.

Conventionally, in this type of belt conveyor device, a pair of left and right carrier rollers that support the belt are all installed in a V-shape when viewed in the belt traveling direction, and in this state, the upper part of the carrier roller is positioned at the front in the belt traveling direction. , the lower part of the carrier roller is positioned behind it and is oriented in an inverted V-shape in plan view, so that the component force when supporting the belt with the carrier roller is applied to the center of the belt as it advances.
This prevents the belt from swinging left and right and meandering.

However, if all the carrier rollers are arranged in the above-mentioned direction and force is applied to the center of the belt, the force that presses the belt toward the center is large, so an even larger amount of force is applied to the belt. When a heavy object such as grain is loaded, the center of the belt bends downward due to its own weight, and if this is severe enough, the center of the belt may fold over and wind around the belt drive roller at the end of the belt. may be damaged.

The present invention was developed in view of these circumstances, and supports the belt by arranging a large number of pairs of left and right carrier rollers in a V-shape on the back side of the belt at predetermined intervals in the longitudinal direction of the belt. In the belt, some pairs of carrier rollers are tilted in an inverted V-shape with respect to the direction in which the belt travels in plan view, and press the belt toward the center to prevent meandering.
The other pair of carrier rollers are tilted in a V-shape to provide a belt conveyor device that can counteract the weight of the conveyed object by pushing the belt outward.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

Referring to FIG. 1, as an example of how the belt conveyor device according to the present invention is used in a grain drying system, one end of the belt conveyor device 1 installed horizontally is connected to a large elevator 3 through a chute 2.
The elevators 3 are connected to the elevators 3 and further connected to the individual dryers 4 to carry the grains therein.

A plurality of storage tanks 5 for storing grains are arranged directly above the belt conveyor device 1, and by opening a shutter (not shown) in a hopper 6 at the bottom of the storage tanks 5, the grains can be transferred onto the belt conveyor device 1. The grains transported by the belt conveyor device 1 are fed into the input hopper 7 at the bottom of the loading elevator 3 through the chute 2, and are then fried by the elevator 3 to separate the grains into individual grains. It is designed to be carried into the dryer 4 of

Incidentally, reference numeral 8 is an elevator for circulating grain provided in the dryer 4.

Next, referring to FIGS. 2 to 4, the belt conveyor device will be described in detail. A driving roller 10 is pivotally supported at one end of a long frame 9 structured like a ladder, and a driven roller is supported at the other end. 11 is pivoted,
An endless belt 12 of a predetermined width is wound between these rollers 10 and 11, and the drive roller 10 is mounted on the frame 9 by a transmission means 13 and is connected to a variable speed reducer mounted on a stand 14. It runs on the belt 12 by being connected to a motor 15 and rotating.

Further, on the back side of the belt 12, a pair of left and right carrier rollers 16 and 17 are installed in a V-shape to support the belt 12, so that the belt 12 can be bent in a V-shape to collect powder and granular materials such as grains. However, in such a pair of carrier rollers 16, 17, one pair of carrier rollers 16a, 17a is inclined in an inverted V-shape with respect to the belt traveling direction in plan view, and the other pair of carrier rollers 16a, 17a is carrier roller 16b
, 17b are, on the contrary, inclined in a V-shape with respect to the belt traveling direction in plan view.

In this way, the pair of carrier rollers 16a in opposite directions
, 17a, 16b, and 17b are arranged alternately along the conveyance path, whereas at the location just below the hopper 6, there is only a pair of carrier rollers 16b and 17b that are inclined in a V-shape.

With this structure, when the grain is dropped onto the belt 12 by the hopper 6, the belt 12 is bent into a V-shape by the carrier rollers 16 and 17, which are installed in a V-shape and support the belt 12. Powder such as grain is placed on top of the belt in a chevron shape depending on the angle of repose, and in this state, the drive roller 10 rotates and travels on the belt 12, thereby conveying the grain.

On the other hand, at this time, for example, the four pairs of carrier rollers 16b and 17b below the hopper 6 are all inclined in a V-shape, so here, the component force when supporting the belt 12 with these carrier rollers 16b and 17b is Acting in the outward direction of the belt, the belt 12 is expanded outward, thereby reducing the inward contraction of the belt 12 and reducing the weight of the grain even if a large load is applied due to the weight of the grain in the hopper 6. be able to withstand it sufficiently.

In addition, at a location away from the hopper 6, the carrier rollers 16a, 17a tilted in an inverted V-shape and the carrier rollers 16b, 17b tilted in a V-shape are arranged alternately, so that the former presses toward the belt center and the latter The outward pressure of the belt acts alternately, and as a result, the belt 12 runs without meandering or shrinking inward more than necessary, and the grain can be stably conveyed.

As described above, according to the present invention, the pair of carrier rollers 16a, 17a tilted in an inverted V-shape and the pair of carrier rollers 16b, 17b tilted in a reverse V-shape are arranged in a mixed manner, thereby eliminating the lateral vibration unlike the conventional one. At the same time, the lowering of the center of the belt is reduced, making the belt 12 less likely to be damaged and improving its durability.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of how the belt conveyor device according to the present invention is used, FIG. 2 is a plan view showing an example of the belt conveyor device according to the present invention, FIG. 3 is a side view of the same, and FIG. is a front view of the same main part. 1...Belt conveyor device, 2...Chute, 3.8...Elevator, 4...Dryer, 5...Accommodation tank , 6, 7...
Hopper, 9...Frame, 10...Drive roller, 11...Followed roller, 12...Curved belt, 13...Transmission means, 14... ...Installation is on the stand, 15...Motor, 169 17?
16 at 17 at16b, 17b...
carrier roller.

Claims (1)

[Scope of utility model registration request] A large number of pairs of left and right carrier rollers installed in a V-shape when viewed from the front on the back side of the belt are arranged at predetermined intervals in the longitudinal direction of the belt to support the belt. A belt conveyor device characterized in that the carrier rollers of the other pair are tilted in an inverted V-shape with respect to the direction of the belt conveyor.