JPH07228319A - Chute inner wall protective device - Google Patents

Abstract

PURPOSE:To provide a new, hardly settling down and low replacing frequency chute inner wall protective device for replacing a liner device of a chute. CONSTITUTION:An inner wall protective device which is arranged in a chute 6 situated on the transfer end of a belt conveyor 4 and is arranged in front of the transfer end, is composed of two pulleys 1 and 2 oppositely arranged at prescribed intervals almost in upper and lower positions, a band-like belt 3 extended in an endless shape between the pulleys 1 and 2 and a driving device (unillustrated) to drive either one pulley in rotation. A surface of the belt 3 is inclined to a vertical surface according to its necessity, or a belt cleaner 9 is arranged so as so make sliding contact with a surface of a return side belt 3b of the belt 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a chute of a belt conveyor used for transferring ores, coal, cement materials, crushed stones, and other materials such as powder particles, from the collision and abrasion of the transferred objects against the inner wall. The present invention relates to a new inner wall protection device for a chute, which replaces a liner device used to prevent damage to the inner wall of the chute that occurs and so-called lodges in which the transferred material remains and adheres to the inner wall.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, in order to prevent the inner wall 26a of a chute from being damaged and the transferred object 8 to stay on the inner wall 26a, a discharge speed, a direction, a physical property such as a specific weight of the transferred object, Lump size, impact, abrasion, viscous, wetness,
Liner devices of various materials and forms have been used depending on disintegration, corrosiveness, oiliness, temperature and the like. Generally, one end of a rubber plate 27a, which is cut in advance to a predetermined size, is placed at an upper position of the chute 26 with a bolt or a nut. Fastening element 2 such as
There is known a liner device 27 that is fixed by using 7b, is suspended at the other end, and is arranged in front of the transfer end at a distance from the transfer end to protect the chute inner wall 26a.

[0003]

However, since the rubber plate of the liner device described in the prior art is inexpensive, the old belt can be diverted, and the device is simple and inexpensive, it is generally widely used. Although it has been used, the discharged transfer material always collides with a specific part of the rubber plate, so that the collision part is worn early and becomes unusable. The degree is remarkable.
Therefore, the frequency of rubber plate replacement becomes high, the number of man-hours required for the replacement work is unexpectedly large, and there is a problem that the operation of the belt conveyor must be stopped during the replacement work. In the case of a high transfer material, the collision portion is likely to have a lodge, and it takes a lot of man-hours to remove it. Guiding the transfer object to the proper drop position is an important function of the chute, but it has been a difficult design item due to design restrictions such as drop, space and space constraints, and connection loading conditions. Had.

The present invention has been invented in view of the above problems, and is a novel chute inner wall protection device that can be easily replaced with a liner device with less frequency of replacement due to wear and with less occupancy. The purpose is to provide.

[0005]

In order to achieve the above-mentioned object, the present invention is arranged in a chute that guides the fall of the transfer material discharged from the transfer end of the belt conveyor, and is spaced from the transfer end. In the chute inner wall protection device arranged in front of the transfer end, at least two opposing pulleys arranged at a substantially vertical position with a predetermined gap,
The present invention provides an inner wall protection device for a chute, which comprises a belt-shaped belt endlessly hung between the pulleys and a drive device capable of driving at least one of the pulleys.

Further, the shaft centers of the two pulleys may be arranged relatively apart from the vertical surface so that the belt surface facing the transfer end is inclined with respect to the vertical surface.

Further, a belt cleaner capable of slidingly contacting the surface of the belt on the return side of the belt to remove foreign substances can be installed to make the foreign substance prevention more remarkable.

[0008]

In the chute inner wall protection device according to the first aspect of the invention, the belt which is endlessly hung on the pulleys disposed at the upper and lower positions is continuously driven to run, thereby transferring the transferred product discharged from the belt conveyor to the belt. Since the collision position is always different, the wear of the belt is uniform over the entire circumference, and unlike a fixed rubber plate, it is not concentrated at one point, the service life is extended, and the frequency of replacement is reduced. Also, since the belt is run, the belt on the pulley becomes curved and the belt surface is stretched, and due to this stretching action, slippage occurs between the surface of the belt and the surface of the living thing, and at the same time, the centrifugal force applied to the living thing again. Combined with the action of force, the living thing is acting to separate from the belt. Further, the discharge speed of the transfer material discharged from the transfer end,
The transferred object collides with the belt at a certain collision speed X and an incident angle α determined by the discharge angle and the time until the collision after the discharge, but as shown in FIGS. 3 (A) and 3 (B), When the belt collides with the belt traveling at the speed Z, the collision of the transfer material with the belt occurs at the relative collision speed Y and the relative incident angle β. That is, when the belt is stopped, the relative collision velocity Y and the relative incident angle β of the transported material with respect to the belt are the same as those in the case of the fixed rubber plate of the conventional art, but the belt travels as in the present invention. Then, the relative collision speed Y of the transported object with respect to the belt and the relative incident angle β have certain fixed values according to the belt speed Z.
If the traveling direction and speed of the belt are properly selected according to the physical properties of the transported material, the relative incident angle β of the transported material with respect to the belt can be improved, and the repulsion position corresponding to the repulsion can be changed, and vice versa. Further, the relative collision speed Y with respect to the belt can be improved to remarkably reduce the wear of the belt. For example, when it is not necessary to improve the relative collision speed Y or the relative incident angle β of the transfer product with respect to the belt simply by extending the life of the belt, the belt transfers the belt in the same direction as the direction in which the discharged transfer product falls. 2-1 of collision speed X
Running at a speed Z of about 0% is effective in extending the belt life. On the other hand, as shown in FIG. 3 (A), when the speed of the conveyor belt is relatively slow, for example, when the transported object collides with the belt at an incident angle α of 30 °, the relative incident angle β is set to 4
If it is possible to improve the falling position of the transferred product due to the connection loading if the angle is set to 5 °, the belt moves in the same direction as the falling direction of the transferred product discharged from the belt conveyor, and the collision speed X is about 37%.
It is advisable to drive at a speed Z of%. In this case, secondarily, the relative collision speed Y with respect to the belt becomes about 71% of the actual collision speed X of the transferred object, and the change of the relative incident angle β of the transferred object can be achieved and at the same time, the wear of the belt can be reduced. As another example, as shown in FIG. 3 (B), the speed of the conveyor belt is relatively high, and as seen in, for example, an upward tilted belt conveyor, the transported object has an incident angle α of 6 on the belt.
In the case of collision at 0 °, if the relative incident angle β is 45 ° and the drop position of the transferred product can be improved due to connection loading, the belt is set to the falling direction of the transferred product discharged from the belt conveyor. About 37% of the collision speed X in the opposite direction Z
It is good to drive in. In this case, secondarily, the relative collision speed Y with respect to the belt is about 12 times the actual collision speed X of the transported object.
2%, which is an increase of 22%.
Can be achieved. In this way, the design requirements of the chute that has the function of changing the relative incident angle β of the traveling belt with respect to the transported object and correspondingly changing the falling position of the transported object that has caused repulsion, for example, the drop, the location It is effective in increasing the degree of freedom in design with respect to connection conditions such as space restrictions, in-line connection loading, and angled connection loading.

Further, in the inner wall protection device for a chute according to the second aspect of the present invention, since the belt surface facing the transfer end is an inclined surface, the incident angle α of the transferred material with respect to the belt can be physically changed. The dropping position of the transferred product that has caused the change can be changed, and in addition to the effect of the first invention, the degree of freedom in designing the chute can be further increased.

Also, in the chute inner wall protection device according to the third aspect of the present invention, since the belt cleaner for removing extraneous substances can forcibly scrape off extraneous substances on the belt surface from the belt surface, the extraneous substances of the first invention are provided. In addition to the separating action, the anti-occupancy performance can be made more remarkable.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the chute inner wall protection device includes an upper pulley 1 and a lower pulley 2 which are vertically arranged in a substantially vertical position. The belt 3 is endlessly stretched over the belt. The belt 3 may be, for example, a cover rubber having an upper 1.5 to 8.0 mm and a lower 1.5 to 3.0 mm, but preferably a wear resistant cover rubber having an upper 3.0 mm and a lower 1.5 mm. Good to use. Regarding the material of the cover rubber, the speed and physical properties of the material to be transferred, such as specific weight, mass size, impact, abrasion, viscosity, wetness, disintegration, corrosiveness, oiliness, temperature, etc., can be selected as necessary. Good. As the reinforcing core of the belt, 1 ply to 3 plies of canvas may be used with a total strength of about 50 kg / cm to 300 kg / cm, but the material of the reinforcing core, the number of plies, and the total strength are the same as when selecting the cover material. It is recommended to select it properly according to the speed and physical properties of. The belt 3 has a width substantially the same as that of the conveyor belt 5. The upper and lower pulleys 1, 2 preferably have a diameter of 1
It is preferable to use a small diameter size of about 0 to 350 mm to reduce the volume occupied by the chute inner wall protection device inside the chute 6. For that reason, 1 ply with good flexibility ~ 3
Use the ply resply belt 3.

The upper pulley 1 is a crown pulley, which is rotationally driven by a driving means 10 such as an electric motor serving as a drive pulley through a speed reducing mechanism, and the belt 3 is in the same direction as the falling direction of the transfer material discharged from the belt conveyor.
Or, the vehicle is continuously run in either direction. Which direction the belt travels is set according to the design requirements of the chute as described later. The lower pulley 2 is a horizontal pulley and is used as a take-up pulley so as to apply tension to the endless belt 3. The lower pulley 2 may be simply used as a tail pulley. In this case, a belt take-up device (not shown) may be separately provided and the take-up pulley may be arranged there.

Further, the belt 3 is run such that the transfer material 8 discharged from the belt conveyor 4 collides with the running belt 11 so as to collide with the running belt 11 in the middle in the up-down direction and in the widthwise center of the belt 3. Place the upper and lower pulleys 1 and 2 that are located.

The running belt 11 and the return belt 12
The diameter of the pulleys 1 and 2 formed between the belts 3 is substantially equal, and the space 13 formed on both sides of the belt 3 is provided with a cover (not shown) made of a thin iron plate or the like. 8 and foreign matter are caught in the space 13 and are caught between the lower pulley 2 and the belt 3 to prevent the belt 3 from being damaged.

The speed of the belt 3 and its traveling direction depend on the design requirements of the chute 6 to which the inner wall protection device for the chute of the present application is applied, such as head, space and space restrictions, connection conditions for in-line connection loading and angled connection loading. The setting varies depending on the operating conditions of the belt conveyor 4, the physical properties of the transferred material, and the like.
For example, when it is not necessary to improve the relative collision speed Y or the relative incident angle β of the transfer product with respect to the belt simply considering the extension of the belt life, the belt moves in the same direction as the falling direction of the transfer product discharged from the belt conveyor. If the belt is run at a speed Z that is about 2 to 10% of the collision speed X of the transported object, it is effective in extending the belt life. On the other hand, as shown in FIG. 3 (A), the speed of the conveyor belt is relatively slow, for example, when the transported object collides with the belt at an incident angle α of 30 °, and if the relative incident angle β is set to 45 °, connection loading is performed. If it is possible to improve the falling position of the transfer product, it is advisable to run the belt in the same direction as the direction of the transfer product discharged from the belt conveyor at a speed Z of about 37% of the collision speed X. In this case, secondarily, the relative collision speed Y with respect to the belt becomes about 71% of the actual collision speed X of the transferred object, and the change of the relative incident angle β of the transferred object can be achieved and at the same time, the wear of the belt can be reduced. As another example, as shown in FIG. 3 (B), when the speed of the conveyor belt is relatively high and the transferred object collides with the belt at an incident angle α of 60 ° as seen in an upward inclined belt conveyor, for example. In addition, if the relative incident angle β is set to 45 °, the falling position of the transferred product can be improved due to the connection loading, and the belt is collided with the collision speed in the direction opposite to the falling direction of the transferred product discharged from the belt conveyor. It is advisable to drive at a speed Z that is approximately 37% of X. In this case, as a side effect, the relative collision speed Y with respect to the belt is about 122% of the actual collision speed X of the transferred object, which is increased by 22%, but the relative incident angle β of the transferred object can be changed. Therefore, the speed Z of the belt 3 and its traveling direction are appropriately set according to the design requirements of the chute 6 to which the inner wall protection device for a chute of the present application is applied.

The lower pulley 2 swings in an arc around the shaft of the upper pulley 1 and confirms the falling position of the object to be repelled and dropped by the belt surface. After adjustment, the bolts and nuts are fixed at predetermined positions. Fix with 11.

Further, the belt cleaner is installed in sliding contact with the surface of the return side belt 3b of the lower pulley 2. As a belt cleaner, Japanese Patent Publications 2-5645 and 2
Those according to -24730 are preferable.

Of course, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the claims based on the spirit of the present invention. For example, in the embodiment of the present invention, the width dimension of the belt, the number of plies, the total strength, the pulley diameter, and the like have been described as an example, but the specification is further specified within the range of the practical chute mounting location and spatial restrictions. The present invention can be applied to a belt specification having a higher numerical value than the above numerical value and an inner wall protection device for a chute having a pulley diameter. It can also be effective.

[0019]

According to the first aspect of the present invention, since the belt continuously runs, the transfer material discharged from the belt conveyor does not concentrate on one point on the belt and always collides with different positions on the belt. The belt wear is evenly distributed over the entire circumference, and the service life of the belt is extended. As a result, the frequency of belt replacement is low, and the total number of man-hours required for the replacement work can be reduced as compared with the conventional technique. At the same time, since the conveyor belt has conventionally been stopped for the replacement work, the reduction of the stop time according to the present invention contributes to the improvement of the belt conveyor operating rate and directly leads to the improvement of the productivity. Decreasing the frequency of belt replacement is effective in facilitating the planning of stopping the belt conveyor. In addition, since the belt is run, the belt on the pulley becomes curved and an extension action is generated on the belt surface, and at the same time centrifugal force acting on the occupant acts to separate the occupant from the belt and effectively remove the occupant. . By installing the belt cleaner, it is possible to forcibly scrape and remove the extraneous matter, so that the removing effect becomes more remarkable in addition to the above-mentioned detaching action. Further, by continuously running the belt, the relative collision speed Y and the relative incident angle β of the discharged transfer product with respect to the belt become values determined by the running speed of the belt. By appropriately selecting, it becomes possible to change the drop position of the transported object that is repelled from the belt and falls, so that it is effective in increasing the degree of freedom of design with respect to various constraints of the design requirements of the chute.

In the second aspect of the invention, since the incident angle α of the transported material with respect to the belt can be changed by making the belt surface an inclined surface, the degree of freedom in designing the chute can be further increased in addition to the effect of the first aspect of the invention. Play.

In the third aspect of the present invention, since the belt cleaner installed in sliding contact with the belt surface can forcibly remove the extraneous matter on the belt surface from the belt surface, the anti-occupation performance is more remarkable in addition to the effect of the first aspect of the present invention. You can

[Brief description of drawings]

FIG. 1 is a front view of an inner wall protection device for a chute for explaining an embodiment of the present invention.

FIG. 2 is a plan view of an inner wall protection device for a chute for explaining an embodiment of the present invention.

FIG. 3 is an explanatory diagram for explaining a relative collision speed Y and a relative incident angle β of a transferred substance with respect to a belt according to an embodiment of the present invention.

FIG. 4 is a front view for explaining a conventional liner device.

[Explanation of symbols]

 1 Upper pulley 2 Lower pulley 3a Running side belt 3b Return side belt 3 Belt 4 Belt conveyor 5 Conveyor belt 6a Chute inner wall 6 Chute 8 Transported material 9 Belt cleaner 10 Driving means 11 Fixing means 13 Space section

Claims (3)

[Claims] 1. An inner wall protection device for a chute, which is arranged in a chute that guides a fall of a transfer material discharged from a transfer end of a belt conveyor, and is arranged in front of the transfer end with a distance from the transfer end. , At least two opposing pulleys arranged at a substantially vertical position with a predetermined interval,
An inner wall protection device for a chute, comprising a belt-shaped belt endlessly wound between the pulleys and a drive device capable of driving at least one of the pulleys. 2. The shaft centers of the two pulleys are relatively spaced from the vertical surface such that the belt surface facing the transfer end is inclined with respect to the vertical surface. Chute inner wall protector. 3. The chute inner wall protection device according to claim 1, further comprising a belt cleaner which is slidably contacted with the belt surface on the return side of the belt to remove foreign matters.