JPS6256203A - Method of curling transport belt in curved portion of pipe conveyer - Google Patents

Abstract

PURPOSE:To enable the curling of a pipe conveyer at a curved portion having a small radius of curvature by providing plural sets of expanding rollers, thereby to expand a belt like a conduit pipe or a flat plate to pass a curved portion and again forming the belt into a pipe by rolling rollers in the pipe conveyer for granular powder. CONSTITUTION:A set of support rollers 9 are disposed U-shaped at an inlet of a forwarding path belt 1a in a curved portion A, and expanding rollers 10, 11 are disposed, thereby to form the belt into a flat board. After passing the curved point, the belt is again restored to a pipe form by an expanding roller 12 and a rolling roller 13, and sent to a shape retaining roller 5. A return path belt 1b is similarly formed into a flat board by a support roller 14 and expanding rollers 16, 17 and restored to a pipe form by an expanding roller 18, and a rolling roller 15. Thus, the belt can be runned moderately even at a curved portion having a small radius of curvature.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention involves rolling a large part of a circularly running endless flat belt into a pipe shape, wrapping a powdery object to be conveyed therein,
In a known pipe conveyor for continuous conveyance, the conveyor belt can be smoothly rotated even at a curved portion with an extremely small radius of curvature.

(Prior art and its problems) Unlike other types of conveyors, a pipe conveyor has a conveyor belt rolled into a pipe shape, so as long as the radius of curvature is not excessively large, it can be curved and run without any inconvenience. I can do it.

However, if it is desired to curve the curvature with an extremely small radius due to unavoidable circumstances at the installation location, an excessive compressive force will be applied to the surface of the outgoing belt that wraps around the conveyed object near the center of curvature. An excessive tensile force acts on the surface far from the center of curvature.

Further, the empty return belt tries to deform into a flat shape and comes into strong contact with the shape-retaining rollers on both sides that guide the conveyor belt, and the side edges of the conveyor belt strongly rub against each other as they try to overlap each other deeply.

Therefore, the conveyor belt will be damaged at small curved sections on both the outward and return trips, and its life will be significantly shortened. At the same time, significant stress will be placed on the entire pipe comparator, and the radius of curvature of the curved section will be reduced. , it is difficult to make it smaller than a certain limit.

(Means for Solving the Problems) The present invention deploys a pipe-shaped conveyor belt in a trough-like or flat-plate shape using an appropriate number of sets of developing rollers in a curved portion with a small radius of curvature. Then, the above-mentioned problem is solved by using rounding rollers provided before and after the unfolding roller to roll the product into a pipe shape again.

(Function) In the pipe conveyor to which the present invention is applied, the pipe-shaped conveyor belt unfolds like a gutter in a curved portion with a small radius of curvature. You can run around it without spilling it.

(Example) Fig. 1 and Fig. 2 schematically show a pipe conveyor to which the present invention is applied. 2) and the lower rear roller (3), which rotates freely, is hooked to the flat plate-shaped portion.

FIG. 2 shows a shape-retaining frame (4) for guiding and running a conveyor belt (1) rolled into a pipe shape, and circular holes (4a) (4b) are bored in the lower part of the frame (4). Each circular hole (4a
) (4b) are each surrounded by a plurality of shape retaining rollers (
5) are arranged in an annular manner on the same circumference -1.

In Fig. 1, the outbound belt (]a), which is rolled out into a flat plate shape by rotating around the rear roller (3) from below, is rolled into a gutter shape by a rounding roller (not shown), but just before that, , the conveyed object (7) is dropped from the hopper (6). Next, the outbound belt (1a) is rolled into a pipe shape, wraps around the conveyed object (7), passes through the circular hole (4a) at the top of each shape-retaining frame (4), and passes through the upper front roller. (2) The objects to be transported (7) are put into the receiving hopper (8) surrounding the container (2).

The return belt (1b) that has run around the front roller (2) is rolled up into a pipe shape again, passes through the circular hole (4b) at the bottom of each shape-retaining frame (4), and is rolled to the rear roller (3). Go back and cycle.

The above is a brief description of the structure of a conventional pipe conveyor, and the pipe conveyor shown in FIG.

After the outgoing belt (1a) wraps around the conveyed object (7) and travels almost horizontally, it curves upward almost vertically at a curved portion A with a significantly small radius of curvature, and then rises to a curved portion B. , it is curved at a steep angle and almost horizontally.

Figures 3 and 4 show a curved part A. At the entrance of the outgoing belt (1a) in the curved part A (3rd left side, lower part of Figure 4), a U-shaped Belt (1a)
A set of support rollers (9) are arranged to support the outer surface of the
Beyond the support roller (9), an outgoing belt (1
a) a set of first developing rollers (lO) that support the center of the outer surface from below and press both inner sides from above; A set of second developing rollers (11) that supports from below and presses both inner surface sides from above, a set of third developing rollers (12) similar to the first developing rollers (10), and support rollers ( 9) similar to l#I's meme roller (''
3) is provided.

Pipe-shaped outgoing bell that moves to the right from the rear roller (3)
(la) At the curved part A, the first, second and third developing rollers (10) are supported by the support roller (9).
(1, 1) (+2), the wrapped object (7) is rolled around the curved part A without spilling, and is rolled up by the rounding rollers (13). , it rushes into the upper shape retaining roller (5) and rises again into a pipe shape.

At the entrance and exit of the return belt (1b) in the curved part A, the support roller (9) and rounding roller (1
Support roller (14) and rounding roller (15) similar to 3)
are disposed, and between both rollers (14) and (15) are fourth, fifth, and sixth developing rollers (16 )(17)
(18) are arranged in order from the support roller (14).

The descending pipe-shaped return belt (1b) is supported by the support roller (14) at the curved part A, and then moves to the fourth belt (1b).
Fifth and sixth developing rollers (] 6) (17) (] 8
), it unfolds into a gutter shape, moves smoothly around the curved part A, is rounded by the rounding roller (15), enters the left shape-retaining roller (5), becomes a pipe shape again, and moves to the left. do.

Although the curved portion B is not shown in the drawing, it is similar to the curved portion A described in “U”.
1-Asymmetrically configured, the outgoing belt (1a) and the incoming belt (1b) are also developed in a trough-like manner, and the outgoing belt (Ia) is able to easily cover the curved part B, and the outgoing belt (Ia) can wrap around the conveyed object. (7) Run around and pass without spilling.

Note that the return belt (1b) may be developed into a flat plate shape and rotated.

The following describes a case where the present invention is applied to a pipe conveyor that overlaps the outer surface of the negative end of the conveyor belt (1) and the inner surface of the other end, but as shown in FIG. )
Also used for pipe conveyors that polymerize both ends of the inner surface of
The present invention can be applied in the same way as the double series.

(Effects of the Invention) As described above, according to the present invention, the conveyor belt can be run around a curved part with an extremely small radius of curvature without any trouble, so the pipe conveyor is not restricted by the circumstances of the installation location. It can be widely used.

[Brief explanation of drawings]

1 is a front view schematically showing a pipe conveyor to which the present invention is applied; FIG. 2 is an enlarged cross-sectional view taken along line X-X in FIG. 1; FIG. 3 is a cross-sectional view of the curved portion A in FIG. Enlarged view, Figure 4 is the 3rd
FIG. 5 is a front view of the outgoing belt in the figure, and a longitudinal sectional view showing another example of the conveyor belt to which the present invention can be applied. (1) Conveyance belt (1a) Outbound belt (ratio) Return belt (2) Front roller (3) Rear roller (4) Shape retention frame (5) Shape retention roller
(6) Hopper (7) Object to be transported (
8) Receiving hopper (9) Support roller (10)
First developing roller (11) Second developing roller (12
) Third development roller (13) Me L roller (
14) Support roller (15) Rounding roller (1
6) Fourth development roller (17) Fifth development roller (
18) Sixth developing roller (51) conveyor belt = 8- Fig. 3 Fig. 4

Claims (1)

[Claims] In a pipe conveyor in which most of the endless belt-shaped conveyor belt that runs in circulation is rolled into a pipe shape and the conveyed object is wrapped around it and continuously conveyed, in the curved part with a small radius of curvature, the pipe-shaped conveyor belt is rolled out into a gutter-like or flat-plate shape using an appropriate number of sets of rolling rollers, and then rolled into a pipe shape again using rounding rollers provided before and after the rolling rollers. How to run a conveyor belt around a curved part of a pipe conveyor.