JP3865591B2 - Conveyor belt guide device and belt conveyor equipment using this guide device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is a conveyor belt guide device that conveys scraps such as earth and sand while following excavation in tunnel construction and sampling sites, and a belt conveyor facility using this guide device, and is particularly suitable for a stretch belt conveyor facility. About things.
[0002]
[Prior art]
At a conventional tunnel excavation site, a system that reciprocates transport carts and trucks such as trolleys, a system that feeds liquid inside a pipe using muddy water, and a system that uses an extending belt conveyor are used.
[0003]
In the system using the above-mentioned transportation cart or truck, since it takes time to reciprocate, it cannot cope with high-speed conveyance and has problems such as measures against exhaust gas. In addition, the liquid feeding system has a problem that it is difficult to transport earth and sand containing a large amount of gravel, and a device for separating after discharging is necessary. Furthermore, the belt conveyor facility is considered promising because it can be continuously conveyed and there is no problem of exhaust gas.
[0004]
[Problems to be solved by the invention]
However, although the stretchable belt conveyor equipment can be gently curved, it is difficult to continuously convey at a bent portion with a large angle, and in such a case, a plurality of belt conveyors may be arranged, or This is done by turning the conveyor belt using a special turning roller device. However, since the turning roller devices for multiple belt conveyors are large and special, the cost is high, and the frictional resistance of the conveyor belt at the bent part is large, so it is not suitable for high-speed conveyance and has a large conveyor driving force. In addition to the necessity, there is a problem that the conveyor belt is severely worn and worn, resulting in a short life.
[0005]
SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and it is possible to greatly reduce the frictional force of the conveyor belt at the bent portion, to cope with a higher speed, to extend the service life, and to reduce the driving power, and this guide. It aims at providing the belt conveyor installation which uses an apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the conveyor belt guide apparatus according to claim 1 is a conveyor belt guide apparatus disposed at a bent portion or a folded portion of a belt moving path, and the bent guide for guiding the conveyor belt includes: A curved levitation guide surface is formed on the outer peripheral portion, and a number of air injection holes are formed on the levitation guide surface to form an air layer capable of levitating the conveyor belt . An outer peripheral guide member having a curved cross-section with a floating guide surface formed on the outer peripheral portion for guiding one of the conveyor belts, and a curve that is fitted with a belt insertion space on the center side of the outer peripheral guide member and guides the other conveyor belt The levitation guide surface is formed of a central guide member formed on the outer peripheral portion .
[0007]
According to the above configuration, since the conveyor belt is guided through the air layer by the levitating guide surface, it is possible to eliminate almost no frictional resistance, to easily cope with high speed, and to extend the life of the conveyor belt. The driving power can be reduced. In addition, since the center guide member is arranged at the axial center of the outer peripheral guide member at the curved step, the bending guide for guiding the carrier belt and the return belt can be reduced in size, and the overall structure of the bending portion is lightweight. Can be made compact and compact.
[0008]
3. The belt conveyor system according to claim 2, wherein an endless conveyor belt wound between a reversing roller of the upstream reversing unit and a reversing roller of the downstream reversing unit is moved from the upstream belt moving path to the downstream belt moving path. Is provided with a bent portion that is turned with a predetermined turning angle, and is disposed at an inclination of ½ of the turning angle above the downstream belt moving path at the bent portion, and the conveyor belt is connected to the upstream belt. A first bending guide that turns between a movement path and a turn-back path section that is fed back above the downstream belt movement path; and is disposed perpendicular to the other belt movement path to dispose the conveyor belt with the turn-back path section. A second bending guide that is reversed with respect to the downstream belt moving path is provided, and the first bending guide and the second bending guide are configured by the conveyor belt guide device according to claim 1.
[0009]
According to the above configuration, the bent portion of the conveyor belt is configured by the first bent guide and the second bent guide having the floating guide surface, and the turning portion of the conveyor belt is guided through the air layer. Friction resistance at the turning part can be almost eliminated, even if there are many bent parts with a large angle, it can easily cope with high speed, the life of the conveyor belt can be extended, and the driving power of the belt conveyor can be reduced. .
[0010]
According to a third aspect of the present invention, there is provided a belt conveyor facility comprising: an endless conveyor belt wound between a reverse roller of an upstream reverse portion and a reverse roller of a downstream reverse portion; A turning portion is provided, and at this sudden turning portion, a plurality of turning intermediate path portions that are turned with a predetermined turning angle are connected to the carrier belt of the conveyor belt via a bent portion, and a return belt is attached. A first bending guide that is provided in a vertical posture and is provided with a curved belt movement path that is bent and continuous, and is disposed above the downstream belt movement path at the bending section, and turns the conveyor belt from the upstream belt movement path to the folding path section; A second bending guide that reverses the conveyor belt from the folding path portion to the downstream belt moving path, and at least one of the first bending guide and the second bending guide Those constituted by the guiding device of the conveyor belt of claim 1, wherein.
[0011]
According to the above configuration, since the curved belt moving path for bending the return belt in the vertical direction with the return belt in the vertical posture is provided in the sudden turning portion, and the bend intermediate path is connected to the carrier belt through the plurality of bent portions. It can easily cope with a sudden turning portion such as a curve, U-turn, or a series of complicated curves, and a separate drive conveyor is not required. In addition, since the floating guide surface of each bending guide can eliminate frictional resistance at the turning portion of the conveyor belt, even if there are a large number of bending portions at a large angle, it can easily cope with high-speed operation and can be easily stretched. The service life can be extended and the driving power of the belt conveyor can be reduced .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Here, a first embodiment of a belt conveyor facility for discharging earth and sand according to the present invention will be described with reference to FIGS.
[0013]
FIG. 1 shows an enlarged schematic plan view of a bent portion 1 of an extension belt conveyor facility, and FIG. 1 omits an extension portion having an upstream belt storage and a conveyor drive portion having a conveyor drive motor.
[0014]
As shown in FIGS. 2 and 3, in the forward path portion which is the upper surface of the belt moving paths 2A and 2B, the carrier belt 4 is composed of a central horizontal roller and inclined rollers on both sides at regular intervals in the moving direction. (Outward path conveyor belt) 3A is supported in a trough-shaped cross section, and a return belt (double path conveyor belt) 3B is guided by a flat return roller 5 in the double path area.
[0015]
The bent portion 1 is turned between the upstream belt moving path 2A and the downstream belt moving path 2B with a turning angle θ of, for example, 90 degrees. The bent portion 1 includes the downstream belt moving path 2B. The carrier belt 3A is disposed with a turning angle θ / 2, that is, 45 ° inclined with respect to the upstream belt movement path 2A, and the conveyor belts 3A and 3B are turned over the downstream belt movement path 2B in the opposite direction. A first bending guide 11 led out to 2C, and a second bending guide 12 disposed so as to be orthogonal to the folding path portion 2C and the downstream belt moving path 2B and reversing the conveyor belts 3A and 3B are provided.
[0016]
As shown in FIGS. 4 and 5, the first bending guide 11 includes an outer peripheral guide member 14 having a floating guide surface 14a for guiding the carrier belt 3A on the outer peripheral surface, and a floating guide surface for guiding the return belt 3B. It is comprised with the center guide member 15 in which 15a was formed. The outer peripheral guide member 14 and the center guide member 15 are respectively formed in a hollow semicircular arc section that is parallel to each other on the same axis and is fitted with a predetermined interval (belt insertion space 13). Space is formed small. Here, the center guide member 15 may be formed in a cylindrical shape or a semi-cylindrical shape. And the hollow part of the outer periphery guide member 14 and the center guide member 15 is comprised by air header space 14b, 15b. Further, the floating guide surfaces 14a and 15a of the outer peripheral guide member 14 and the center guide member 15 are provided with a number of air injection holes 16 and 17 communicating with the air header spaces 14b and 15b, and air ports 14c and 15c. Compressed air is supplied from the unit 18 to the air header spaces 14b and 15b via the air hose 19, and the compressed air is jetted from the air jet holes 16 and 17 toward the conveyor belts 3A and 3B. The floating guide surfaces 14a and 15a of the first bending guide 11 are formed in a spiral belt-like surface shape having a predetermined inclination angle with respect to each axis.
[0017]
Accordingly, the carrier belt 3A and the return belt 3B are lifted by the pressure of the air layer ejected through the air injection holes 16 and 17 by the floating guide surfaces 14a and 15a of the outer peripheral guide member 14 and the center guide member 15. It is held in a state where it is moved, and is reversed and moved with little frictional resistance. The earth and sand conveyed by the carrier belt 3A is dropped and transferred onto the carrier belt 3A in the downstream belt moving path 2B at the winding portion of the outer peripheral guide member 14.
[0018]
The second bending guide 12 reverses the carrier belt 3A and the return belt 3B by 180 degrees between the folding path portion 2C and the downstream belt moving path 2B, and has the same structure as the first bending guide 11, but the outer circumferential guide The difference is that the member 14 guides the return belt 3B and the center guide member 15 guides the carrier belt 3A, and the floating guide surfaces 14d and 15d are formed in a cylindrical surface perpendicular to the axis. Is different. In addition, since other parts are the same, the same code | symbol is attached and description is abbreviate | omitted.
[0019]
Thereby, in the second bending guide 12, the carrier belt 3 </ b> A introduced from the first bending guide 11 through the return path portion 2 </ b> C is introduced from the upper opening of the belt insertion space 13 to the floating guide surface 15 d of the center guide member 15. Guided and led out from the lower opening of the belt insertion space 13 to the downstream belt moving path 2B. On the other hand, the return belt 3B introduced into the lower portion of the outer peripheral guide member 14 along the downstream belt movement path 2B is guided to the floating guide surface 14d and reversed to be led out to the first bending guide 11 through the return path section 2C. Is done.
[0020]
In the above-described embodiment, in the loading unit 7 provided in the upstream end reversing unit 6 having the reversing roller 6a, earth and sand are loaded and conveyed on the carrier belt 3A, and the carrier belt 3A is the first bending guide at the bending unit 1. 11 is wound onto the carrier belt 3A of the downstream belt moving path 2B.
[0021]
The carrier belt 3 </ b> A at this time is turned by being guided from the upper part of the outer peripheral guide member 14 to the floating guide surface 14 a and introduced into the second bending guide 12 from the turn-back path portion 2 </ b> C. In the second bending guide 12, the carrier belt 3A is introduced into the upper opening of the belt insertion space 13, guided by the floating guide surface 15d of the center guide member 15, and led out to the downstream belt path 2B. And the earth and sand conveyed by the carrier belt 3A of the downstream belt path 2B is discharged from the discharge part 9 of the downstream end reversing part 8 having the reversing roller 8a.
[0022]
The return belt 3B moved from the downstream end reversing portion 8 along the double path of the downstream belt path 2B is introduced to the lower part of the outer peripheral guide member 14 by the second bending guide 12 and guided to the floating guide surface 14d. After being inverted, it is introduced into the first bending guide 11 from the folded path portion 2C. In the first bending guide 11, the return belt 3B is guided from the lower opening of the belt insertion space 13 to the levitation guide surface 15a of the center guide member 15 and led out to the multipath portion of the upstream movement path 2A.
[0023]
According to the above configuration, the conveyor belts 3A and 3B are guided by the bending portion 1 by the outer peripheral guide member 14 and the central guide member 15 of the bending guides 11 and 12 through the floating guide surfaces 14a, 14d, 15a, and 15d, respectively. In these levitation guide surfaces 14a, 14d, 15a, and 15d, the conveyor belts 3A and 3B are separated from the levitation guide surfaces 14a, 14d, 15a, and 15d by the compressed air layers ejected from the numerous air injection holes 16 and 17. Since it can be held without contact, the frictional resistance can be almost eliminated, and the conveyor belts 3A and 3B can be easily moved at high speed and conveyed in large quantities. Further, since the frictional resistance is short, the wear and damage of the conveyor belts 3A and 3B can be greatly reduced and the service life can be extended, and the driving power of the belt conveyor can be reduced and the operation cost can be reduced.
[0024]
In the above embodiment, the turning angle θ of the belt movement paths 2A and 2B is 90 degrees. However, as shown in FIG. 7, it may be 90 degrees or more (150 degrees in the figure) or 90 degrees or less. Well, by installing a plurality of these, it can be conveyed along an arbitrary curve. Furthermore, the 2nd bending guide 12 can also be arrange | positioned in the inversion parts 6 and 8 of belt movement path | route 2A, 2B .
[0025]
Next, a second embodiment of another belt conveyor facility will be described with reference to FIGS.
This embodiment is applicable to the sudden turning portion 20 of the conveying path such as a sharp curve, a U-turn, a complex curve continuation, and the conveyor belts 3A and 3B in the sharp curved path portion in the stretchable belt conveyor facility. By forming the curved belt moving path 2D that moves in a vertical posture, the moving path of the conveyor belts 3A and 3B can be easily changed.
[0026]
In this sudden turning portion 20, the conveyor belts 3A and 3B are vertically positioned on the first turning portion 21 at the downstream end of the upstream belt moving path 2A and the second turning portion 22 at the upstream end of the downstream belt moving path 2B. A curved belt moving path 2D that is curved and moved in an arbitrary direction is provided, and the conveyor belt 3A, between the horizontal attitude of the upstream belt moving path 2A and the downstream belt moving path 2B and the vertical attitude of the curved belt moving path 2D, First to third bending guides 31 to 33 for turning 3B are arranged, respectively.
[0027]
That is, the first turning portion 21 is disposed, for example, by 45 degrees with respect to the upstream belt moving path 2A, and the conveyor belt between the upstream belt moving path 2A and the turning path portion 2E extending laterally. The conveyor belts 3A and 3B are turned between the first bending guide 31 for turning 3A and 3B 90 degrees in a horizontal posture, and the turning path portion 2E and the vertical path portion 2F raised upward. A third bending guide 33 for twisting the conveyor belts 3A and 3B is provided between the two bending guide 32 and the curved belt moving path 2D that moves in the vertical posture with the vertical path portion 2F.
[0028]
Since the first bending guide 31 of the first turning portion 21 has the same structure as the first bending guide 11 of the previous embodiment, the same reference numerals are given and description thereof is omitted.
Further, the second bending guide 32 is formed with an outer peripheral guide member 34 having a ¼ arc-shaped cross section formed with a floating guide surface 34a for guiding the carrier belt 3A on the outer peripheral surface, and a floating guide surface 35a for guiding the return belt 3B. And a center guide member 35 having a ¼ arc-shaped cross section. The outer peripheral guide member 34 and the center guide member 35 are fitted on the same axis with a predetermined interval (belt insertion space 13), and the occupied space is formed small. Others are the same as the first bending guide 31 of the previous embodiment, and an air header space is provided therein, and a number of air injection holes that open to the floating guide surface 35a are formed.
[0029]
Further, the third bending guide 33 is arranged to be inclined by 45 degrees with respect to the conveyor belts 3A and 3B of the vertical path portion 2F and the curved belt moving path 2D, and is the same as the first bending guide 11 of the previous embodiment. Since it is a structure, it attaches | subjects the same code | symbol and abbreviate | omits description.
[0030]
A flat type carrier roller 36 and a return roller 37 for guiding the conveyor belt in a vertical posture are arranged in the curved belt moving path 2D.
In the second turning section 22, the conveyor belts 3A and 3B which are arranged at an inclination of 45 degrees with respect to the curved belt moving path 2D and the vertical path section 2F, respectively, in the vertical posture of the curved belt moving path 2D are lowered. A third bending guide 33 for guiding to the vertical path portion 2F, a second bending guide 32 for turning the conveyor belts 3A and 3B from the vertical path portion 2F to the turning path portion 2E, and a downstream belt moving path from the second bending guide 32 2B, and a first bending guide 31 for turning the conveyor belts 3A and 3B 90 degrees and returning them.
[0031]
The earth and sand dropped from the carrier belt 3A of the first bending guide 31 at the first turning portion 21 is turned by the first bending guide 31 at the second turning portion 22 via the plurality of conveyors 41A to 41F. Is put on the carrier belt 3A.
[0032]
According to the above configuration, the conveyor belts 3 </ b> A and 3 </ b> B are centered with the outer peripheral guide members 14 and 34 of the bending guides 31, 32, and 33 at the first turning portion 21 and the second turning portion 22 of the sudden turning portion 20. The conveyor belts 3A and 3B are held in a non-contact manner by the compressed air layers that are guided by the guide members 15 and 35 through the floating guide surfaces and are ejected from the air injection holes 16 and 17 on the floating guide surfaces. Therefore, the frictional resistance can be almost eliminated, and the conveyor belts 3A and 3B can be easily moved at a high speed and conveyed in large quantities. Further, even such a sudden turning portion 20 having a large number of bent portions has a low frictional resistance, so the wear and damage of the conveyor belts 3A and 3B can be greatly reduced, and the service life can be extended. Driving power can be reduced and driving costs can be reduced .
[0033]
【The invention's effect】
As described above, according to the conveyor belt guide device of the first aspect, since the conveyor belt is guided through the air layer by the floating guide surface, the frictional resistance can be almost eliminated and the high speed can be easily handled. In addition, the life of the conveyor belt can be extended, and the driving power of the belt conveyor can be reduced. In addition, since the center guide member is arranged at the axial center of the outer peripheral guide member at the curved step, the bending guide for guiding the carrier belt and the return belt can be reduced in size, and the overall structure of the bending portion is lightweight. Can be made compact and compact.
[0034]
According to the belt conveyor facility of the second aspect, the bent portion of the conveyor belt is constituted by the first bent guide and the second bent guide having the floating guide surface, and the turning portion of the conveyor belt is guided through the air layer. Therefore, almost no frictional resistance at the turning part of the conveyor belt can be eliminated, and even if there are many bent parts with a large angle, it is possible to easily cope with high-speed operation, the life of the conveyor belt can be extended, and the driving power of the belt conveyor. Can be reduced.
[0035]
According to the belt conveyor equipment of claim 3, the curved belt moving path for bending the return belt in the arbitrary direction with the return belt in the vertical posture is provided in the sudden turning portion, and the intermediate angle path of the carrier belt is interposed through the plurality of bent portions. Since it is connected, it is possible to easily cope with a sudden turning portion such as a sharp curve, a U-turn, or a series of complicated curves, and a separate drive conveyor becomes unnecessary. In addition, since the floating guide surface of each bending guide can eliminate frictional resistance at the turning portion of the conveyor belt, even if there are a large number of bending portions at a large angle, it can easily cope with high-speed operation and can be easily stretched. The service life can be extended and the driving power of the belt conveyor can be reduced .
[Brief description of the drawings]
FIG. 1 is a plan view showing a first embodiment of a belt conveyor facility according to the present invention.
2 is an AA arrow view shown in FIG. 1. FIG.
FIG. 3 is a BB arrow view shown in FIG. 1;
FIGS. 4A and 4B show a first bending guide provided at a bending portion of the belt conveyor equipment, FIG. 4A is an exploded perspective view of an outer periphery guide member and a center guide member, and FIG. 4B is an outer periphery guide; It is an assembly perspective view of a member and a center guide member.
FIG. 5 is a cross-sectional view of an outer periphery guide member and a center guide member of the belt conveyor.
FIGS. 6A to 6C show a second bending guide provided at a bending portion of the belt conveyor, FIG. 6A is an assembled perspective view of an outer periphery guide member and a center guide member, and FIG. 6B is an outer periphery guide; The front view of a member and (c) are the front views of a center guide member.
FIG. 7 is a plan view showing a modified example of the bent portion of the belt conveyor facility.
FIG. 8 is a plan view showing a second embodiment of the belt conveyor facility according to the present invention.
FIG. 9 is a CC arrow view shown in FIG. 8 ;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bending part 2A Upstream belt moving path 2B Downstream belt moving path 2C Folding path part 2D Curved belt moving path 2E Deflection path part 2F Vertical path part 2Ga-2Gg Deflection intermediate path part 3A Carrier belt 3B Return belt 11 1st bending guide 12 Second bending guide 13 Belt insertion space 14 Peripheral guide member 14a Levitation guide surface 14b Air header space 14c Airport 15 Center guide member 15a Levitation guide surface 15b Air header space 15c Airport 16 Air injection hole 17 Air injection hole 20 Rapid turning portion 21 First Turning portion 22 Second turning portion 31 First bending guide 32 Second bending guide 33 Third bending guide 34 Peripheral guide member 34a Levitation guide surface 35 Center guide member 35a Levitation guide surface 41A to 41F Conveyor

Claims (3)

A conveyor belt guide device disposed at a bent portion or a folded portion of a belt moving path,
In the bending guide for guiding the conveyor belt, a curved floating guide surface is formed on the outer periphery, and a plurality of air injection holes are formed on the floating guide surface to form an air layer capable of floating the conveyor belt ,
The bending guide has a curved cross-section outer peripheral guide member formed on the outer peripheral portion thereof, and a belt insertion space on the center side of the outer peripheral guide member. And a central guide member formed on the outer periphery with a curved floating guide surface that is fitted and guides the other conveyor belt. The conveyor belt has a predetermined turning angle between the upstream belt moving path and the downstream belt moving path of the endless conveyor belt wound between the reverse roller of the upstream reverse section and the reverse roller of the downstream reverse section. Providing a bent portion turned through,
  A first bending guide disposed at the bent portion above the downstream belt moving path to turn the conveyor belt from the upstream belt moving path to the folding path section, and to reverse the conveyor belt from the folding path section to the downstream belt moving path. A second bending guide,
The conveyor belt guide device according to claim 1, wherein at least one of the first bending guide and the second bending guide is configured.
This is a belt conveyor facility. An abrupt turning portion is provided between the upstream belt moving path and the downstream belt moving path of the endless conveyor belt wound between the reverse roller of the upstream reverse section and the reverse roller of the downstream reverse section,
At this sudden turning part, a plurality of turning intermediate path parts are connected via a bent part that is turned with a predetermined turning angle to the carrier belt of the conveyor belt, and the return belt is bent in a vertical posture. To provide a curved belt moving path that is continuous
A first bending guide disposed at the bent portion above the downstream belt moving path and turning the conveyor belt from the upstream belt moving path to the folding path section, and the conveyor belt is reversed from the folding path section to the downstream belt moving path. A second bending guide,
A belt conveyor facility, wherein at least one of the first bending guide and the second bending guide is constituted by the conveyor belt guide device according to claim 1 .

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