JPH09175627A - Trough type roller for curve conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trough type roller formed so that a roller stand smoothly slides by centripetal force. SOLUTION: In a trough type roller for a curve conveyor which comprises a center roller 1 and a pair of side rollers 2, 2 tilting relative to the center roller 1 and supports the belt (a) of the curve conveyor in each roller, one piece of arc-like guide rail 4 is provided along in the lateral direction of the belt in a roller stand 3 for journaling each roller and makes a recessed curved surface at the center from both ends located in both side edges of the belt, and both side surfaces of the guide rail 4 in the lateral direction of the belt are embraced and engaged by the plural rotors 5 of a curve conveyor frame to always ensure the smooth slide of the roller stand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trough type roller for supporting a belt of a curved conveyor.

[0002]

2. Description of the Related Art In a curve conveyor in which an endless belt is laid between a head pulley and a tail pulley and the belt is curved, the belt is supported by a trough-shaped roller to prevent falling of a conveyed object. ing.

[0003] The above-mentioned trough roller is, as is known,
It is composed of a center roller and a pair of left and right side rollers that are inclined at a required angle with respect to the center roller.

If the trough-shaped roller is fixedly arranged with the center roller horizontal, a phenomenon occurs in which the belt slides toward the inside of the curve due to the centripetal force due to the belt tension during operation of the curve conveyor. To do.

The above-mentioned centripetal force due to the belt tension is different at the time of starting the operation of the curve conveyor and at the time of load operation. When the load is increased, the centripetal force is also increased. As the amount increases, the curved inner edge of the belt is disengaged from the side rollers, and there is a problem that the conveyed product spills.

Therefore, as a conventional technique for preventing the belt from coming off from the trough-shaped roller, Japanese Patent Laid-Open No. 61-174 has been proposed.
No. 020 publication.

According to this method, a pair of lower carrier stands each having a concave and convex upper surface along the conveyor width direction and having a pair of lower carrier stands are arranged on the conveyor frame along the length direction of the conveyor. The upper and lower carrier stands, each of which has a pair of upper and lower carrier stands connected to each other through a connecting frame, are provided on the lower part of the upper and lower carrier stands to engage with the lower carrier stand to convey the upper carrier stand to the lower carrier stand. The belt is supported by rollers that are supported on the upper carrier stand.

[0008]

According to the above-mentioned structure, the curve conveyor is installed in the place where the soil is likely to change due to the rainfall such as the constructed land and the ground is apt to change or the ground where the uneven settlement is apt to occur. Then, the conveyor frame is distorted due to the above-mentioned ground change and uneven settlement.

Then, since the lower carrier stand and the upper carrier stand are both distorted, the smooth sliding of the upper carrier stand with respect to the lower carrier stand is obstructed by the difference in the distortion of the pair of two members, and the trough-shaped roller to the belt. There was a problem of coming off.

The above-mentioned cause is that two rail members are juxtaposed to form a lower carrier stand, whereas the lower carrier stand has two pairs of members connected by two connecting frames (planar). It is remarkable because it is a parallelogram when it is seen.

Further, the carrier roller may come off due to a defective centering during installation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a trough-shaped roller for a curved conveyor, which ensures smooth sliding of the upper carrier stand.

[0013]

In order to solve the above-mentioned problems, the present invention comprises a center roller and a pair of side rollers inclined with respect to the center roller. In a trough-shaped roller for a curved conveyor to be supported, along with a roller stand that supports each of the above-mentioned rollers along the belt width direction, the upper surface has a concave curved surface from both ends located on both side edges of the belt, and the belt runs One arc-shaped guide rail whose front surface in the direction from both ends is a concave curved surface is provided, and both side surfaces of this guide rail in the belt width direction are caught and engaged by a plurality of rotors provided in the frame of the curve conveyor. Support the roller stand slidably in the direction crossing the running direction of the belt, and place the bell on both sides of the roller stand. It adopts a structure in which a per roller facing the side edge.

Further, the roller stand may adopt a configuration in which the roller stand is tilted forward in the traveling direction of the belt.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A trough-shaped roller for a curve conveyor according to the present invention will be described below with reference to the accompanying drawings.

In the first embodiment of the present invention, as shown in FIGS. 1 and 2, the trough-shaped roller supporting the belt a is composed of a center roller 1 and a pair of side rollers 2 and 2, and a pair of rollers. The side rollers 2 and 2 are arranged in an inclined shape in which the outer ends are higher than the inner ends.

The center roller 1 and the pair of side rollers 2 and 2 are rotatably supported by a roller stand 3.

The roller stand 3 has a concave upper surface along the width direction of the belt a and a center at both ends of the belt a located on both side edges of the belt a. A single arc-shaped guide rail 4 that is an entering curved surface is provided.

The recessed curved surface has an arc shape whose center is located above the bisected position between both ends of the center roller 1.

Further, contact rollers 6 facing the side edges of the belt a are provided at both ends of the roller stand 3.

In the trough-shaped roller having the above-described structure, the roller stand 3 is arranged below the carrier-side belt a of the curve conveyor A with a predetermined distance in front and back, and the carrier-side belt a is used as a center roller. 1 and a pair of side rollers 2 and 2, the guide rails 4 are engaged with each other by a plurality of rotors 5 axially supported by the frame A ′ of the curve conveyor A, so that the roller stand 3 is supported by the belt a. It is mounted so that it can slide in the direction intersecting the traveling direction of.

Now, when the curve conveyor A is activated, the tension of the carrier-side belt a increases, and the centripetal force due to the belt tension causes the carrier-side belt a to move toward the inside of the curve.

At this time, a centripetal force acts on the roller stand 3 via the center roller 1 and the pair of side rollers 2, 2 which come into contact with the carrier side belt a, so that the roller stand 3 is guided toward the inside of the curve by the rotor 5 and the guide. It slides while being guided by the rail 4 and leans from the posture shown in FIG. 1 to the posture shown in FIGS. 3 and 4, and the carrier side belt a
Is supported by the center roller 1 and the pair of side rollers 2, 2.

The belt tension differs depending on the weight of the conveyed product. The heavier the conveyed product, the larger the belt tension becomes, and the belt tension correlates with the centripetal force. When the roller stand 3 is moved to a large distance, the inclination of the roller stand 3 is increased to follow the movement, and the belt a is meandered.

However, due to this meandering, the contact roller 6
When the side edge of the belt a hits the belt a and the hit roller 6 is pushed up by the belt a, the guide rail 4 slides to the position shown in FIG. To) but guide rail 4
And the weights of the sliding parts such as the center roller 1, the side rollers 2 and 2, and the roller stand 3, and the weight of the belt a and the conveyed object, which acts in the direction of gravity to force the belt a of the conveyor. Restore to the center.

As a result, the carrier-side belt a is reliably supported by the center roller 1 and the pair of side rollers 2 and 2, and the carrier-side belt a is prevented from coming off the rollers.

In this way, the roller stand 3 is slid while the roller stand 3 is slid according to the change in the belt tension.
Since the inclination angle of the curve conveyor changes, the radius of the curve conveyor A can be reduced.

As a method for engaging the guide rails 4 with the rotor 5, in the case shown in the figure, a square angular axis having ridge lines projecting between the upper and lower sides of both sides is used, and a pair of front and rear is a set. Then, the grooved wheels as the rotors 5 arranged on the left and right were fitted and engaged with the ridgeline of the angular axis.
That is, it is possible to fit the groove of the guide rail and the outer periphery of the rotor together, and means other than the above may be used.

In the second embodiment of the present invention, as shown in FIG. 5, the roller stand 3 is tilted forward by a predetermined angle α ° in the traveling direction of the belt a.

Then, the friction between the center roller 1 and the pair of side rollers 2, 2 and the belt a (friction occurs because the belt slides on each roller) increases the resistance.

When the belt a is located at the center (center) of the roller stand 3, the frictional resistance balances left and right and does not meander and travels in the center.

However, when the belt a meanders and shifts to the left, the component force on the right side becomes larger than the component force on the left side, and the belt a tends to shift to the right direction. That is, the action of pulling the belt a in the direction opposite to the meandering occurs.

As a result, the belt has an effect of returning to the center.

[0034]

As described above, in the trough type roller according to the present invention, the roller stand is slidable in the width direction of the belt by engaging and engaging one guide rail with the rotor. , Even if the place where the ground changes easily or the ground has uneven settlement, it does not hinder the smooth sliding of the roller stand due to distortion.

Further, since the contact roller is installed on the side surface of the roller stand, the belt meanders, and when the belt contacts the roller and pushes the roller outward, the roller stand is moved outward with respect to the center of the conveyor frame. The gravity acts on the roller stand, the belt, the conveyed object, etc., and a force for returning (inducing) the guide rail to the center of the frame is generated, and as a result, the meandering of the belt is corrected.

In particular, when the side rollers are tilted forward, the friction between the rollers and the belt due to the tilt of the rollers is increased, and the meandering of the belt is further corrected.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of a trough-shaped roller according to the present invention.

FIG. 2 is a plan view

FIG. 3 is a front view showing the operation.

FIG. 4 is a plan view during operation.

FIG. 5 is a side view of the second embodiment.

[Explanation of Codes] A Curve Conveyor A ′ Frame a Belt 1 Center Roller 2 Side Roller 3 Roller Stand 4 Guide Rail 5 Rotor 6 Contact Roller

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[Procedure amendment]

[Submission date] February 14, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

Particularly, the roller stand is set in the running direction of the belt.
Since it is tilted forward, the friction between the roller and the belt increases, and the effect of correcting the meandering of the belt is remarkable.

Claims (2)

[Claims] 1. A trough-shaped roller for a curve conveyor, which comprises a center roller and a pair of side rollers inclined with respect to the center roller, each roller supporting a belt of the curve conveyor, wherein each of the rollers is supported. A single arc-shaped guide along the width direction of the roller stand, with the upper surface having a concave curved surface in the center from both ends located on both side edges of the belt, and the front surface in the running direction of the belt having a concave curved surface in the center from both ends. A rail is provided, and both sides of the guide rail in the belt width direction are slidably engaged in a direction intersecting the traveling direction of the belt by hugging and engaging with a plurality of rotors provided on the frame of the curved conveyor. A curve controller characterized in that supporting rollers are provided on both ends of the roller stand to face side edges of the belt. Trough type roller for beer. 2. The trough-shaped roller for a curved conveyor according to claim 1, wherein the roller stand is tilted forward in the traveling direction of the belt.