JP2021155217A - Skirt structure of belt conveyor - Google Patents

Abstract

To provide a skirt structure of a belt conveyor that inhibits upward movement of the skirt rubber.SOLUTION: A belt conveyor 10 has a belt B curved in a gutter shape. The belt conveyor 10 comprises a pair of skirts 1, 1. The pair of skirts 1, 1 can introduce a conveyed object C to the belt B. The skirt 1 comprises a skirt plate 1b and a first skirt rubber 1s. The skirt plates 1b are arranged above the belt B and face each other in a width direction of the belt B. The first skirt rubber 1s is sandwiched between an outer surface of the skirt plate 1b and a backing plate 1d, and covers a gap between the belt B and the skirt plate 1b. The first skirt rubber 1s has uneven folds Co formed on both surfaces thereof that increase frictional resistance with the outer surface of the skirt plate 1b. The first skirt rubber 1s can inhibit upward movement of the first skirt rubber 1s with respect to the skirt plate 1b.SELECTED DRAWING: Figure 1

Description

The present invention relates to a belt conveyor skirt structure. In particular, the present invention relates to a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from a belt whose transport surface is curved like a gutter.

For example, a belt conveyor for transporting a transported object such as coal is arranged above a belt, an endless band-shaped rubber belt stretched along a plurality of rollers, a driving unit such as a motor for driving the belt, and a belt. It is equipped with a chute, and a chute into which a transported object such as coal is put. The chute has a pair of skirts at the bottom for introducing the loaded object into the belt.

Such a skirt includes a strip-shaped rubber plate, so-called skirt rubber, which is detachably fixed to the lower part of the chute while extending along the belt. A pair of skirt rubbers surround both wings of the belt via a plate member, and the tip edge of the skirt rubber is placed close to the transport surface of the belt, so that the conveyed object leaks to the outside of the belt while the belt is being driven. Can be suppressed.

However, the skirt structure of the conventional belt conveyor reduces the gap between the tip edge of the skirt rubber and the transport surface of the belt, but if the tip edge of the skirt rubber is pressed against the belt, the skirt rubber or the belt will wear. There was a problem that it was promoted and a large amount of money was incurred to replace the skirt rubber or the belt. On the other hand, if this gap is increased, there is a problem that the conveyed object leaks to the outside from the belt, especially when the particle size of the conveyed object is small.

For such a defect, a skirt structure of a belt conveyor that suppresses wear of the skirt rubber or the belt and prevents leakage of the conveyed material is disclosed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2001-233432

FIG. 5 is a vertical cross-sectional view showing the structure of the skirt structure of the belt conveyor according to the prior art. FIG. 6 is a vertical cross-sectional view showing the configuration of a main part of the skirt structure of the belt conveyor according to the prior art.

Further, FIG. 7 is an enlarged vertical cross-sectional view of a main part for explaining the first operation of the skirt structure of the belt conveyor according to the prior art. FIG. 8 is an enlarged vertical cross-sectional view of a main part for explaining the second operation of the skirt structure of the belt conveyor according to the prior art.

Referring to FIGS. 5 to 8, the conventional belt conveyor 9 includes an endless band-shaped rubber belt B stretched along a plurality of rollers R. The roller R is composed of a central roller R1 and a pair of inclined rollers R2 and R2. The central roller R1 is arranged in a horizontal state. The pair of inclined rollers R2 and R2 are arranged so as to be inclined downward toward the central roller R1 (see FIG. 5). Referring to FIG. 6, the tilt roller R2 is arranged at an inclination angle of about 35 degrees with respect to the central roller R1.

With reference to FIG. 5, the belt B can be curved in a gutter shape by forming the roller R with a central roller R1 arranged in a horizontal state and a pair of inclined rollers R2 and R2 inclined downward. As a result, the transported object C such as coal transported by the belt B can be accumulated in the central portion in the width direction of the belt B.

Further, referring to FIG. 5, the belt conveyor 9 includes a pair of skirts 91 and 91 fixed to the lower part of a chute (not shown). The pair of skirts 91 and 91 can introduce the conveyed object C thrown into the chute into the belt B.

Referring to FIGS. 5 to 8, the skirt 91 includes a skirt plate 9b and a plate-shaped skirt rubber 9s. The skirt plate 9b has a side surface portion Sb and a flange portion 9f (see FIG. 5 or FIG. 6). The pair of side surface portions Sb and Sb are arranged so as to face each other at intervals in the width direction of the belt B.

Further, referring to FIG. 5 or FIG. 6, the pair of side surface portions Sb and Sb are vertically provided above the belt B. The flange portion 9f is bent at a substantially right angle to the side surface portion Sb. The pair of flange portions 9f and 9f are arranged in opposite directions. The pair of flange portions 9f and 9f can be detachably fixed to the lower part of a chute (not shown).

Referring to FIG. 5, the skirt plate 9b includes a plurality of angle members 9a. The end of the piece of the angle member 9a is joined to the outer surface of the side surface portion Sb by welding or the like. A considerable number of the plurality of angle members 9a are appropriately arranged along the longitudinal direction of the skirt plate 9b.

Referring to FIG. 5, the other piece of the angle member 9a supports the clamp member 9c. The clamp member 9c has a clamp portion 91c having a V-shaped open angle at the tip portion. The clamp portion 91c extends a shaft portion from its base end portion. The shaft portion of the clamp member 9c is inserted into another piece of the angle member 9a. Then, by press-fitting the cotter pin into the shaft portion of the clamp member 9c from the axial direction, the clamp member 9c can be supported by another piece of the angle member 9a.

Referring to FIG. 5, the clamp portion 91c is arranged along the longitudinal direction of the skirt plate 9b. Further, the skirt plate 9b further includes a rectangular backing plate 9d arranged along the longitudinal direction of the clamp portion 91c. The backing plate 9d is arranged so as to face the outer surface of the skirt plate 9b. The skirt rubber 9s is sandwiched between the side surface portion Sb of the skirt plate 9b and the clamp portion 91c via the backing plate 9d.

Referring to FIG. 5, the tip edge of the skirt rubber 9s is close to the transport surface of the belt B with a slight gap. As a result, it is possible to prevent the conveyed object C from leaking to the outside from the belt B. However, when the belt conveyor 9 is operated for a certain period of time, the tip edge of the skirt rubber 9s becomes worn. In this case, it is possible to reset the mounting position of the skirt rubber 9s so that the tip edge of the skirt rubber 9s is close to the transport surface of the belt B, but the belt conveyor 9 is operated for a long period of time. , It was necessary to replace the skirt rubber 9s.

Further, referring to FIG. 5 or FIG. 6, the side surface portion Sb of the skirt plate 9b is arranged so that its end edge is provided with a predetermined gap from the transport surface of the belt B. The skirt rubber 9s covers the gap between the edge of the side surface portion Sb and the transport surface of the belt B.

Referring to FIG. 7, when the belt conveyor 9 is in operation, the skirt rubber 9s is pushed by the conveyed object C in the gap between the skirt plate 9b and the belt B, and a force to move upward is generated (upward arrow in the figure). reference). Further, when the belt conveyor 9 is in operation, the belt B bounces to generate a force for the skirt rubber 9s to move upward (see the upward arrow in the figure).

With reference to FIG. 7, by moving the skirt rubber 9s upward with respect to the belt B, the gap between the edge of the skirt rubber 9s and the transport surface of the belt B becomes large, and the crushed charcoal having a small particle size is transported. There was a problem that the object Cp leaked from the belt B to the outside.

Further, referring to FIG. 8, as the skirt rubber 9s moves upward with respect to the skirt plate 9b, the transported object Cp such as crushed charcoal having a small particle size is placed between the skirt plate 9b and the skirt rubber 9s. Is easier to enter. Then, due to this, there is a problem that the skirt rubber 9s is damaged or the transported object Cp such as crushed charcoal having a small particle size leaks from the belt B to the outside.

The skirt structure of the belt conveyor according to Patent Document 1 is composed of a first skirt rubber made of a thick plate and a second skirt rubber made of a thin plate arranged outside the first skirt rubber. The first skirt rubber closes the gap between the belt and the skirt plate. The second skirt rubber hangs down toward the belt.

In the skirt structure of the belt conveyor according to Patent Document 1, even if the conveyed object leaks from the gap between the first skirt rubber and the belt, the second skirt rubber comes into contact with the belt without a gap, so that the conveyed object is outside the belt. It is said that it can be prevented from leaking to the belt. Further, it is said that the frictional resistance between the second skirt rubber and the belt can be suppressed by bringing the second skirt rubber into contact with the belt in a hanging state.

However, in the skirt structure of the belt conveyor according to Patent Document 1, it is difficult to prevent the skirt rubber from moving upward with respect to the skirt plate, and it is possible to prevent the conveyed material from leaking outward from the belt. There is a problem that it is not easy.

It is a skirt structure of a belt conveyor provided with a skirt and arranged facing the belt so that the transported object does not leak to the outside from the belt whose transport surface is curved like a gutter, and the skirt rubber is on the upper side with respect to the skirt plate. There is a demand for a skirt structure of a belt conveyor that suppresses movement to. The above can be said to be the subject of the present invention.

The present invention has been made in view of such a problem, and is a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from the belt, and is a skirt plate. On the other hand, it is an object of the present invention to provide a skirt structure of a belt conveyor that suppresses the movement of the skirt rubber upward.

The present inventor is a skirt rubber provided on a belt conveyor recessed in a girder shape to prevent leakage of conveyed material. The skirt rubber is sandwiched between the outer surface of the skirt plate and the backing plate, and the skirt is placed on both sides of the skirt rubber. By forming uneven folds that increase the frictional resistance with the outer surface of the plate, it is thought that the skirt rubber can be suppressed from moving upward with respect to the skirt plate. We have invented a skirt structure for various belt conveyors.

(1) The skirt structure of the belt conveyor according to the present invention is a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from the belt whose transport surface is curved like a gutter. The skirts are arranged above the belt, a pair of skirt plates arranged to face each other in the width direction of the belt, a backing plate arranged to face the outer surface of the skirt plate, and an outer surface of the skirt plate. A flat plate-shaped first skirt rubber that is sandwiched between the backing plates and covers the gap between the transport surface of the belt and the edge of the skirt plate is provided, and the first skirt rubber rubs against the outer surface of the skirt plate. Concavo-convex folds that increase resistance are formed on both sides on the base end side.

(2) The skirt structure of the belt conveyor according to the present invention is a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from the belt whose transport surface is curved like a gutter. The skirts are placed above the belt, and on a pair of skirt plates that are arranged to face each other in the width direction of the belt, a backing plate that is arranged to face the outer surface of the skirt plate, and an outer surface of the skirt plate. It is provided with an L-shaped second skirt rubber that holds and covers the gap between the transport surface of the belt and the edge of the skirt plate, and the second skirt rubber is arranged along the outer surface of the skirt plate. In addition to being vertically hung toward the transport surface of the belt, the vertical portion sandwiched between the outer surface of the skirt plate and the backing plate is bent substantially at right angles from the base end portion of the vertical portion, and the inclined surface of the belt is bent. The vertical portion has a horizontal portion extending toward the skirt plate, and the vertical portion forms uneven folds on both sides that increase frictional resistance with the outer surface of the skirt plate.

(3) It is preferable that the horizontal portion of the second skirt rubber has an edge close to the inclined surface of the belt.

The skirt structure of the belt conveyor according to the present invention includes a pair of skirt plates arranged above the belt and opposed to each other in the width direction of the belt, a backing plate arranged to face the outer surface of the skirt plate, and a contact with the outer surface of the skirt plate. A flat plate-shaped first skirt rubber that is sandwiched between plates and covers the gap between the transport surface of the belt and the edge of the skirt plate, and the first skirt rubber has an uneven shape that increases the frictional resistance with the outer surface of the skirt plate. Since the folds of the skirt are formed on both sides on the base end side, it is possible to prevent the first skirt rubber from moving upward with respect to the skirt plate.

Further, the skirt structure of the belt conveyor according to the present invention includes a pair of skirt plates arranged above the belt and opposed to each other in the width direction of the belt, a backing plate arranged to face the outer surface of the skirt plate, and an outer surface of the skirt plate. It is provided with an L-shaped second skirt rubber that covers the gap between the transport surface of the belt and the edge of the skirt plate, and the second skirt rubber holds the outer surface of the skirt plate and the vertical portion sandwiched between the backing plates. Since the vertical portion has uneven folds on both sides that increase the frictional resistance with the outer surface of the skirt plate, it is possible to prevent the second skirt rubber from moving upward.

It is a vertical cross-sectional view which shows the structure of the skirt structure of the belt conveyor by 1st Embodiment of this invention. It is a figure which shows the structure of the 1st skirt rubber provided in the skirt structure of the belt conveyor by 1st Embodiment, and FIG. 2A is a perspective view of the 1st skirt rubber seen from the front side and the right side side, FIG. (B) is a perspective view of the first skirt rubber as viewed from the front side and the left side, and FIG. 2 (C) is a right side view of the first skirt rubber. It is a vertical cross-sectional view which shows the structure of the skirt structure of the belt conveyor by the 2nd Embodiment of this invention. It is a figure which shows the structure of the 2nd skirt rubber provided in the skirt structure of the belt conveyor by 2nd Embodiment, and FIG. 4A is a perspective view of the 2nd skirt rubber seen from the front side and the right side side, FIG. (B) is a perspective view of the second skirt rubber as viewed from the front side and the left side, and FIG. 4 (C) is a right side view of the second skirt rubber. It is a vertical cross-sectional view which shows the structure of the skirt structure of the belt conveyor by the prior art. It is a vertical cross-sectional view which shows the structure of the main part of the skirt structure of the belt conveyor by the prior art. It is an enlarged vertical sectional view of the main part for demonstrating the first operation of the skirt structure of the belt conveyor by the prior art. It is an enlarged vertical sectional view of the main part for demonstrating the second operation of the skirt structure of the belt conveyor by the prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[First Embodiment]
(Structure of skirt structure of belt conveyor)
First, the configuration of the skirt structure of the belt conveyor according to the first embodiment of the present invention will be described. In addition, since the components having the same reference numerals as those given in the prior art have the same action, the following description may be omitted.

Referring to FIG. 1, the belt conveyor 10 according to the first embodiment of the present invention includes an endless band-shaped rubber belt B stretched along a plurality of rollers R. The belt B is curved like a gutter by forming the roller R with a central roller R1 arranged in a horizontal state and a pair of inclined rollers R2 and R2 inclined downward.

Referring to FIG. 1, the belt conveyor 10 includes a pair of skirts 1.1 fixed to the bottom of a chute (not shown). The pair of skirts 1.1 can introduce the transported object C such as coal charged into the chute into the belt B.

Referring to FIG. 1, the skirt 1 includes a skirt plate 1b and a flat plate-shaped first skirt rubber 1s. The skirt plate 1b has a side surface portion Sb and a flange portion 1f. The pair of side surface portions Sb and Sb are arranged so as to face each other at intervals in the width direction of the belt B. Further, the pair of side surface portions Sb and Sb are vertically provided above the belt B. The flange portion 1f is bent at a substantially right angle to the side surface portion Sb. The pair of flange portions 1f and 1f are arranged in opposite directions. The pair of flange portions 1f and 1f can be detachably fixed to the lower part of a chute (not shown).

Referring to FIG. 1, the skirt plate 1b includes a plurality of angle members 9a. The end of the piece of the angle member 9a is joined to the outer surface of the side surface portion Sb by welding or the like. A considerable number of the plurality of angle members 9a are appropriately arranged along the longitudinal direction of the skirt plate 1b.

Referring to FIG. 1, the other piece of the angle member 9a supports the clamp member 9c. The clamp member 9c has a clamp portion 91c having a V-shaped open angle at the tip portion. The clamp portion 91c extends a shaft portion from its base end portion. The shaft portion of the clamp member 9c is inserted into another piece of the angle member 9a. Then, by press-fitting the cotter pin into the shaft portion of the clamp member 9c from the axial direction, the clamp member 9c is supported by the other piece of the angle member 9a.

Referring to FIG. 1, the clamp portion 91c is arranged along the longitudinal direction of the skirt plate 1b. Further, the skirt plate 1b further includes a rectangular backing plate 1d arranged along the longitudinal direction of the clamp portion 91c. The backing plate 1d is arranged to face the outer surface of the skirt plate 1b. The first skirt rubber 1s is sandwiched between the side surface portion Sb of the skirt plate 1b and the clamp portion 91c via the backing plate 1d.

Further, referring to FIG. 1, the side surface portion Sb of the skirt plate 1b is arranged so that its end edge is provided with a predetermined gap from the transport surface of the belt B. The first skirt rubber 1s covers the gap between the edge of the side surface portion Sb and the transport surface of the belt B.

Referring to FIG. 2, the first skirt rubber 1s has uneven folds Co formed on both sides on the base end side. These folds Co extend along the longitudinal direction of the first skirt rubber 1s. By sandwiching the first skirt rubber 1s with folds Co between the side surface portion Sb of the skirt plate 1b and the clamp portion 91c, the frictional resistance between the skirt plate 1b and the outer surface can be increased (see FIG. 1).

(Action of skirt structure of belt conveyor)
Next, the operation and effect of the skirt structure of the belt conveyor according to the first embodiment will be described. Referring to FIG. 1, the skirt 1 includes a pair of skirt plates 1b and 1b arranged above the belt B and opposed to each other in the width direction of the belt B, and a backing plate 1d arranged to face the outer surface of the skirt plate 1b. A flat first skirt rubber 1s that is sandwiched between the outer surface of the skirt plate 1b and the backing plate 1d and covers the gap between the transport surface of the belt B and the edge of the skirt plate 1b is provided.

With reference to FIG. 1 or 2, since the first skirt rubber 1s has uneven folds Co that increase the frictional resistance with the outer surface of the skirt plate 1b on both sides on the base end side, the skirt plate 1b On the other hand, it is possible to prevent the first skirt rubber 1s from moving upward.

With reference to FIG. 1 or 2, as shown in FIG. 7, the first skirt rubber 1s is pressed against the outer surface of the skirt plate 1b even when a force is generated to move the first skirt rubber 1s upward. Since the uneven folds Co that increase the frictional resistance are formed on both sides on the base end side, it is possible to prevent the first skirt rubber 1s from moving upward with respect to the skirt plate 1b. Since the movement of the first skirt rubber 1s to the upper side can be suppressed, it is possible to suppress the gap between the edge of the first skirt rubber 1s and the transport surface of the belt B from expanding, and it is possible to limit the leakage of the transported object C. ..

Further, with reference to FIG. 1 or FIG. 2, since it is possible to suppress the movement of the first skirt rubber 1s upward with respect to the skirt plate 1b, the particle size between the skirt plate 1b and the first skirt rubber 1s It becomes difficult for the transported object Cp such as small crushed charcoal to enter (see FIG. 8). As a result, it is possible to prevent the damage of the first skirt rubber 1s from progressing, and it is possible to limit the leakage of the conveyed object C.

[Second Embodiment]
(Structure of skirt structure of belt conveyor)
Next, the configuration of the skirt structure of the belt conveyor according to the second embodiment of the present invention will be described. In addition, since the components having the same reference numerals as those given in the first embodiment have the same action, the following description may be omitted.

Referring to FIG. 3, the belt conveyor 20 according to the second embodiment of the present invention includes an endless band-shaped rubber belt B stretched along a plurality of rollers R. The belt B is curved like a gutter by forming the roller R with a central roller R1 arranged in a horizontal state and a pair of inclined rollers R2 and R2 inclined downward.

Referring to FIG. 3, the belt conveyor 20 includes a pair of skirts 2 and 2 fixed to the bottom of a chute (not shown). The pair of skirts 2 and 2 can introduce the transported object C such as coal charged into the chute into the belt B.

Referring to FIG. 3, the skirt 2 includes a skirt plate 1b and an L-shaped second skirt rubber 2s. The skirt plate 1b has a side surface portion Sb and a flange portion 1f. The pair of side surface portions Sb and Sb are arranged so as to face each other at intervals in the width direction of the belt B. Further, the pair of side surface portions Sb and Sb are vertically provided above the belt B. The flange portion 1f is bent at a substantially right angle to the side surface portion Sb. The pair of flange portions 1f and 1f are arranged in opposite directions. The pair of flange portions 1f and 1f can be detachably fixed to the lower part of a chute (not shown).

Referring to FIG. 3, the skirt plate 1b includes a plurality of angle members 9a. The end of the piece of the angle member 9a is joined to the outer surface of the side surface portion Sb by welding or the like. A considerable number of the plurality of angle members 9a are appropriately arranged along the longitudinal direction of the skirt plate 1b.

Referring to FIG. 3, the other piece of the angle member 9a supports the clamp member 9c. The clamp member 9c has a clamp portion 91c having a V-shaped open angle at the tip portion. The clamp portion 91c extends a shaft portion from its base end portion. The shaft portion of the clamp member 9c is inserted into another piece of the angle member 9a. Then, by press-fitting the cotter pin into the shaft portion of the clamp member 9c from the axial direction, the clamp member 9c is supported by the other piece of the angle member 9a.

Further, referring to FIG. 3, the side surface portion Sb of the skirt plate 1b is arranged so that its end edge is provided with a predetermined gap from the transport surface of the belt B. The second skirt rubber 2s covers the gap between the edge of the side surface portion Sb and the transport surface of the belt B.

Referring to FIG. 3 or FIG. 4, the second skirt rubber 2s has a vertical portion Va and a horizontal portion Ha. The vertical portion Va is arranged along the outer surface of the skirt plate 1b and hangs vertically toward the transport surface of the belt B (see FIG. 3). The horizontal portion Ha bends at a substantially right angle from the base end portion of the vertical portion Va and extends toward the inclined surface of the belt B (see FIG. 3). The pair of horizontal portions Ha and Ha extend in opposite directions (see FIG. 3).

Referring to FIG. 4, the vertical portion Va of the second skirt rubber 2s has uneven folds Co formed on both sides on the base end side. These folds Co extend along the longitudinal direction of the second skirt rubber 2s. By sandwiching the vertical portion Va of the second skirt rubber 2s with folds Co between the side surface portion Sb of the skirt plate 1b and the clamp portion 91c, the frictional resistance with the outer surface of the skirt plate 1b can be increased (see FIG. 3).

[Action of skirt structure of belt conveyor]
Next, the operation and effect of the skirt structure of the belt conveyor according to the second embodiment will be described. Referring to FIG. 3, the skirt 2 is arranged above the belt B and is held by a pair of skirt plates 1b and 1b arranged to face each other in the width direction of the belt B and the outer surface of the skirt plate 1b, and the belt B and the skirt. It is provided with an L-shaped second skirt rubber 2s that covers the gap between the plates 1b. The second skirt rubber 2s has a vertical portion Va vertically provided toward the transport surface of the belt B and a horizontal portion Ha extending toward the inclined surface of the belt B. Further, the edge of the horizontal portion Ha is close to the inclined surface of the belt B.

Referring to FIG. 3, the skirt structure of the belt conveyor according to the second embodiment is pushed by the conveyed object C when the conveyed object C enters the gap between the conveyed surface of the belt B and the edge of the skirt plate 1b. , The horizontal portion Ha of the second skirt rubber 2s bends upward. As a result, the inclined surface of the belt B and the edge of the horizontal portion Ha of the second skirt rubber 2s are separated from each other, so that the wear of the horizontal portion Ha of the belt B and the second skirt rubber 2s can be reduced.

With reference to FIG. 3, as described above, in the skirt structure of the belt conveyor according to the second embodiment, even if the horizontal portion Ha of the second skirt rubber 2s is pushed upward by the conveyed object C, the edge of the horizontal portion Ha is formed. It can be deformed in the direction away from the belt B, and the contact with the belt B can be reduced. As a result, wear of the second skirt rubber 2s and the belt B can be suppressed.

Further, referring to FIG. 3, in the skirt structure of the belt conveyor according to the second embodiment, since the force P to the outside of the conveyed object C is dispersed, the force applied to the second skirt rubber 2s can be suppressed. Thereby, the wear of the second skirt rubber 2s can be suppressed. Further, in the skirt structure of the belt conveyor according to the second embodiment, the inclined surface of the belt B and the edge of the horizontal portion Ha of the second skirt rubber 2s are separated from each other by being pushed by the conveyed object C, so that the second skirt rubber 2s It is possible to prevent the conveyed object C from biting between the edge of the belt and the belt B. Further, since the vertical portion Va of the second skirt rubber 2s is suppressed from moving upward as described later, the inclined surface of the belt B and the edge of the horizontal portion Ha of the second skirt rubber 2s are required. It is possible to prevent the separation from the above.

Further, referring to FIG. 3, the skirt 2 is arranged above the belt B, and a pair of skirt plates 1b and 1b arranged to face each other in the width direction of the belt B and a backing plate arranged to face the outer surface of the skirt plate 1b. It is provided with 1d and an L-shaped second skirt rubber 2s that is sandwiched between the outer surface of the skirt plate 1b and the backing plate 1d and covers the gap between the transport surface of the belt B and the edge of the skirt plate 1b.

Referring to FIG. 3, the second skirt rubber 2s has a vertical portion Va sandwiched between the outer surface of the skirt plate 1b and the backing plate 1d, and the vertical portion Va has irregularities that increase the frictional resistance with the outer surface of the skirt plate 1b. Since the shaped folds Co are formed on both sides (see FIG. 4), it is possible to prevent the second skirt rubber 2s from moving upward.

With reference to FIG. 3 or 4, as shown in FIG. 7, the second skirt rubber 2s is pressed against the outer surface of the skirt plate 1b even when a force is generated to move it upward by being pushed by the conveyed object C. Since the uneven folds Co that increase the frictional resistance are formed on both sides of the vertical portion Va, it is possible to prevent the second skirt rubber 2s from moving upward with respect to the skirt plate 1b. Since the movement of the second skirt rubber 2s to the upper side can be suppressed, it is possible to suppress the gap between the edge of the second skirt rubber 2s and the transport surface of the belt B from expanding, and it is possible to limit the leakage of the transported object C. ..

Further, with reference to FIG. 3 or 4, it is possible to prevent the second skirt rubber 2s from moving upward with respect to the skirt plate 1b, so that between the skirt plate 1b and the vertical portion Va of the second skirt rubber 2s. In addition, it becomes difficult for the transported object Cp such as crushed rubber having a small particle size to enter (see FIG. 8). As a result, it is possible to prevent the damage of the second skirt rubber 2s from progressing, and it is possible to limit the leakage of the conveyed object C.

In the skirt structure of the belt conveyor according to the second embodiment, in order to suppress the wear of the second skirt rubber, the second skirt rubber may be formed in an L shape, and the L-shaped second skirt rubber is covered from the bottom surface side. An L-shaped steel plate may be added, or a skirt plate having an extension portion that covers the L-shaped second skirt rubber from the bottom surface side can also be used.

The skirt structure of the belt conveyor according to the present invention can be installed under the chute on which a transported object such as coal is dropped. Further, the skirt structure of the belt conveyor according to the present invention may be installed on a belt conveyor that conveys a transported object such as coal. In this case, a pair of side walls are provided in the width direction of the belt conveyor, and these side walls are used. A skirt can also be installed over the entire length of the belt conveyor.

1 skirt 1b skirt plate 1d backing plate 1s 1st skirt rubber 10 belt conveyor B belt C transported object Co folds

Claims (3)

It is a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from the belt whose transport surface is curved like a gutter.
The skirt
A pair of skirt plates arranged above the belt and opposed to each other in the width direction of the belt.
A backing plate arranged to face the outer surface of the skirt plate and
A flat plate-shaped first skirt rubber that is sandwiched between the outer surface of the skirt plate and the backing plate and covers the gap between the transport surface of the belt and the edge of the skirt plate is provided.
The first skirt rubber is
A belt conveyor skirt structure in which uneven folds that increase frictional resistance with the outer surface of the skirt plate are formed on both sides on the base end side. It is a skirt structure of a belt conveyor provided with a skirt and arranged to face the belt so that the conveyed object does not leak to the outside from the belt whose transport surface is curved like a gutter.
The skirt
A pair of skirt plates arranged above the belt and opposed to each other in the width direction of the belt.
A backing plate arranged to face the outer surface of the skirt plate and
An L-shaped second skirt rubber that is held on the outer surface of the skirt plate and covers the gap between the transport surface of the belt and the edge of the skirt plate is provided.
The second skirt rubber is
A vertical portion that is arranged along the outer surface of the skirt plate, is vertically provided toward the transport surface of the belt, and is sandwiched between the outer surface of the skirt plate and the backing plate.
It has a horizontal portion that is bent at a substantially right angle from the base end portion of the vertical portion and extends toward the inclined surface of the belt.
The vertical portion is a belt conveyor skirt structure in which uneven folds that increase frictional resistance with the outer surface of the skirt plate are formed on both sides. The skirt structure of the belt conveyor according to claim 2, wherein the horizontal portion of the second skirt rubber has an edge close to an inclined surface of the belt.

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