JP3557496B2 - Belt conveyor device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is mainly used for transporting conveyed materials such as earth and sand and rocks in civil engineering work, and is not necessarily used to connect a plurality of linear conveyors by bending a transport path horizontally in a tunnel or on the ground. The present invention relates to a belt conveyor in which a conveying path can be formed by a genuine belt, and particularly to a case in which the radius of a curve can be made very small so that it can be easily adapted to the situation of an installation place.
[0002]
[Prior art]
In a conventional belt conveyor, in order to make the conveying path bend, the conveying path is bent in multiple stages so as to connect linear belt conveyors. However, a drive unit is required for each of the straight belt conveyors, and the construction cost is high. Maintenance was also difficult.
On the other hand, a belt conveyor that uses a single real belt to make a horizontal curve requires a smaller number of driving units and facilitates maintenance and management.
This belt conveyor is designed to curve the belt horizontally with the center of the belt concave for transport, and the center support roller is positioned at the center of the belt so that the center of the belt is concave. A side support roller inclined to the side is provided, and the center support roller and the side support roller are attached to one frame. This frame is provided with rails along the axis of the center support roller and the side support rollers, and the base frame serving as a base is provided with rollers to engage with the rails. Therefore, the frame to which each roller is attached can be pivoted with respect to the base frame.
Further, a roller for regulating the movement of the belt toward the inside of the belt is attached to the side of the side roller which is the inner end of the curve. When the belt is placed on the conventional curved portion and the supporting roller, the belt on the outer peripheral side of the curve is stretched, so that a tension to go inward acts as a repulsive force. Therefore, the belt moves inward until it hits a roller provided further inside the inner side roller. However, since a further inward force is applied, the entire frame on which the rollers are mounted swings so as to be lifted inward. Further, when a conveyed object is placed on the conveyor belt, the belt is fed in a balanced state by swinging back to a position where the weight of the conveyed object and the force directed toward the inside of the belt are balanced. Conventionally, the conveying line is curved and fed in this manner.
However, the belt support roller in the conventional horizontal curve portion has a complicated mechanism because it has a swing mechanism. For this reason, it was very expensive. In addition, since strength is required to support the conveyor belt and the conveyed material, all the parts are made of metal, so they are very heavy, and it is difficult to carry out the work during construction and removal.
Also, in such a structure in which the forces are balanced, if the radius of the curve is reduced, the force directed toward the inside of the curve becomes too large, and it is difficult to maintain a belt shape with a concave central portion that can be conveyed. Did not. Therefore, the responsiveness to the location is not sufficient, and depending on the location, a plurality of linear conveyors are used.
[0003]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to solve these conventional problems, to make the curve radius of the horizontal curve part very small, to improve the compatibility of the installation place, etc., and to greatly reduce the construction cost. Another object of the present invention is to provide a belt conveyor device that is lightweight, can be easily constructed and removed, and has improved durability.
[0004]
[Means for Solving the Problems]
The configuration of the present invention that has solved such a problem includes:
1) In an authentic belt conveyor is supported by a number of rollers the transport path and return path of the belt, the horizontal curved portion of the belt end of the curve inside the roller for supporting so as to bend the belt of the horizontal curved section of the conveying path A plurality of rollers are arranged in a substantially J-shape so that the part is inclined at a steep angle, forming a group of curved rollers, limiting the movement of both ends of the belt so that both ends of the curved belt do not fall down toward the center of the belt as falling prevention means,
An anti-falling roller (5) that restricts belt movement on the roller surface so that the end of the belt in the inside of the curve does not fall outside, and a belt that is outside the curve at the upper end of the radial direction limiting roller (6) described later. the end leaning prevention flange to limit movement so as not tilt down the inside (6a) and then and parallel to the provided falling preventing collar (6a) on the outer periphery of the radial restriction roller a predetermined distance downward falling prevention flange ( 6a) A belt holding flange (6b) having a larger outer diameter is provided as a radial direction limiting means for limiting the movement of the curved belt in the curve radial direction .
A radial limit roller (4) provided at the inner end of the curve of the belt to stop the movement of the belt in the conveying direction and stop at a roller surface so that the belt does not move inward from a predetermined position ; A radial direction limiting roller (6) which is provided at the end and does not hinder the movement of the belt in the conveying direction, and stops at a roller surface so that the belt does not move outside the curve from a predetermined position , is provided . A belt conveyor device provided with a diverting means for turning a belt in a twisting direction from a horizontal direction to a vertical direction, and a vertical roller for holding a surface inside a curve of a return path belt in a vertical direction. 2) Attach each roller of the curve roller group to the common roller frame, and attach the roller frames to the conveyor frame at predetermined intervals. The belt conveyor device according to the above 1), wherein the conveyor frame is attached to a gantry arranged at predetermined intervals in the conveyor conveyance direction. 3) The belt conveyor device 4 according to the above 2), wherein the conveyor frame can be tilted with respect to the gantry. 2) or 3), wherein at least one of the plurality of roller frames has a horizontal curve direction for changing the curve curvature of the belt and a changeable position in a curve radial direction for adjusting the belt tension. Belt conveyor device 5) The belt conveyor device according to any one of 1) to 4), further including a lower end supporting roller that supports a lower end of the belt that is vertically oriented on the return path. 6) The belt that is oriented vertically on the return path is curved. 7. The method according to any one of 1) to 5) above, further comprising a fall prevention means for restricting the movement of the lower end of the belt so as not to fall inside. 7) The belt conveyor device according to any one of 1) to 6), wherein a plurality of longitudinal rollers supporting the vertically oriented belt are arranged in a row, and each roller is independently rotatable. In the belt conveyor device.

[0005]
[Action]
In the present invention, the belt is curved by a plurality of rollers arranged along a curved shape by placing the belt conveyance path on the curved roller group. Therefore, it is possible to securely hold an object to be conveyed on the belt conveyance path even in a horizontal curve portion. Further, it is possible to suppress the falling of both ends of the belt curved by the fall preventing means and restrict the movement of the belt in the curve radial direction by the radial direction restricting means, thereby enabling a curve having a small radius of curvature and thereby reducing the curve radius. To The return path of the belt is made vertical by the diverting means so that the radius of the curve can be reduced, and the belt is not bent or bent at the curved portion, so that the belt is less likely to be damaged or deformed.
Each roller of the curved roller group is mounted on a common roller frame, the roller frame is mounted on a conveyor frame, and the conveyor frame is mounted on a gantry, so that the unitized conveyor frame is handled to reduce labor. .
If the conveyor frame can be tilted with respect to the gantry, the conveyor frame is tilted so that the curve roller group is tilted, making it easier to balance the tension of the belt toward the inside of the curve radius and increasing the curve radius. Be able to make it smaller.
If at least one of the roller frames is capable of changing the position in the curve direction and curve radius direction, the curve curvature of the belt can be changed by changing the direction of the curve belt support, and the position in the curve radius direction is changed Make it possible to adjust the belt tension.
If the lower end support roller that supports the lower end of the vertically oriented belt on the return path is provided, when the vertically oriented belt falls down to a predetermined position, it will hit the lower end support roller. We support so that there is not trouble.
In the case of the return path provided with a belt fall prevention means, the movement of the lower end of the belt is limited by the fall prevention means so that the vertically oriented belt does not fall inward.
The rollers that support the vertically oriented belt are a plurality of rollers arranged in a row, and the rollers that can rotate independently are independent of the bias of tension due to the position of the vertically oriented belt. And make it rotatable so that it can be absorbed.
When the fall prevention means is a roller, when the end of the belt is about to fall, the roller surface comes into contact with the belt and does not hinder the movement of the belt in the transport direction, thereby preventing the belt from falling.
In the case where the radial direction limiting means is a roller, the belt abuts on the roller surface when there is a movement in a curve radius direction of the belt that is likely to exceed a predetermined range, and does not hinder the movement of the belt in the transport direction, and Limit the radial movement of the curve.
In the case of an assembly type belt conveyor device, a gantry, a conveyor frame, and a roller frame having the same structure are assembled to constitute a belt conveyor device.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The rollers of the curved roller group may be provided with a plurality of annular protrusions to increase friction with the belt.
The rollers arranged along the curved shape of the curved roller group may be arranged in the same line or differently.
An existing one may be used for the straight portion of the belt conveyor device of the present invention.
In the present invention, the vertical direction of the belt on the return path in the horizontal curve portion may not be strictly vertical, but may be slightly inclined because the vertical direction may cause the return path to be curved without bending in the width direction of the belt. Even if it does so, what is necessary is just to make it not bend like the prior art.
[0007]
【Example】
Embodiments of the present invention will be specifically described with reference to the drawings.
FIGS. 1 to 7 show that each roller of the curved roller group is mounted on a common roller frame, the roller frame is mounted on a conveyor frame, and the conveyor frame is mounted on a gantry so that the roller frame can be tilted. The position can be changed in the direction and curve radius direction, a lower end support roller that supports the lower end of the vertically oriented belt is provided, and a fall prevention means that prevents the vertically oriented belt from falling is provided, and the vertical roller is 1 is an example of a belt conveyor device including a plurality of independent rollers.
1 to 4 are explanatory views of a belt conveyor device according to an embodiment. FIG. 5 is an explanatory diagram of a return portion of the belt conveyor device of the embodiment. FIG. 6 is an explanatory diagram of a curved roller group and a roller frame of the belt conveyor device of the embodiment. FIG. 7 is an explanatory diagram of a vertical roller of the belt conveyor device according to the embodiment. 8 and 9 are explanatory diagrams of the belt conveyor device of the embodiment. FIG. 10 is an explanatory diagram of a radial direction limiting roller outside the curve of the belt conveyor device of the embodiment.
In the figure, 1 is a belt conveyor device, 1a is a straight section, 1b is a horizontal curve section, 2 is a curve section roller group, 2a is an outer end roller, 2b is an outer roller, 2c is an inner roller, and 2d is an inner end roller. Reference numeral 3 denotes a roller frame, 3a denotes a mounting slot, 4 denotes a radial restriction roller inside the curve used as a radial restriction means, 5 denotes a fall prevention roller inside the curve used as a fall prevention means, and 6 denotes a radial restriction means. 6a is a fall prevention flange used as a fall prevention means, 6b is a belt holding flange, 8 is a conveyor frame, 8a is a mounting long hole, 8b is a connecting portion, 9 is a gantry, 9a Is a frame mounting portion, 11 is a vertical roller, 11a is a rotation axis, 11b is a rotation axis, 12 is a vertical roller frame, 13 is a lower end support roller, and 14 is a downside. Prevention roller 16 the belt 18 is the return portion using as a diverting means, 18a is a return roller, 18b, 18c, 18 d are rollers, T is a tunnel.
[0008]
In the belt conveyor device 1 of the embodiment, as shown in FIGS. 1 and 6, an outer roller 2b which is horizontal with respect to the roller frame 3 and has a plurality of annular convex portions on the outer periphery is rotatably attached. An inner roller 2c, which is inclined at a predetermined angle with respect to the outer roller 2b and has an annular convex portion on the outer periphery, is rotatably attached to the roller frame 3 inside the outer roller 2b inside the curve. Further, inside the curve of the inside roller 2c, there is provided an inside end roller 2d inclined at a steeper angle than the inside roller 2c. An outer end roller 2a inclined at a predetermined angle with respect to the outer roller 2b is rotatably attached to the roller frame 3 on the outer side of the curve of the outer roller 2b. The outer roller 2a, the outer roller 2b, the inner roller 2c, and the inner roller 2d attached to the roller frame 3 form a curved roller group 2 having a substantially J-shaped roller surface.
[0009]
At the end inside the curve of the roller frame 3, there are a radial direction limiting roller 4 which stops at the roller surface so as not to hinder the movement of the belt in the conveying direction and so that the belt does not move inside the curve from a predetermined position, and an outer end roller. An anti-falling roller 5 for restricting the movement of the belt on the roller surface so that the end of the belt located on 2a in the curve inside direction does not fall outside is provided.
As shown in FIGS. 1 to 3, the roller frames 3 to which the respective rollers are attached are attached to the conveyor frame 8 which is a rectangular frame body at predetermined intervals so as to be four in parallel. The attachment portion of the roller frame 3 to the conveyor frame 8 is provided with a plurality of attachment slots 3a long in the curve direction so as to change the curvature of the belt supported by the curve roller group 2 at a plurality of locations. The mounting portion 3 is provided with an elongated mounting hole 8a long in the radial direction of the curve at a position corresponding to the elongated mounting hole 3a so that the mounting position in the radial direction of the curve can be changed.
With such an attachment structure, the horizontal curve portion 1b having a curve radius as required can be formed by changing the rest in the curve direction with reference to the fixed roller frame attached to the conveyor frame 8. , Can be changed. The belt tension can also be adjusted as needed to accommodate the changed curve radius.
At the end of the conveyor frame 8 on which the roller frame 3 is mounted on the outside of the curve, as shown in FIG. 10, a roller surface is provided so as not to hinder the movement of the belt in the conveying direction and to prevent the belt from moving outside the curve from a predetermined position. Is provided, and a flange portion larger than the roller diameter is provided at the upper end of the radial direction limiting roller 6 to limit the movement so that the end of the belt outside the curve does not fall inward. The fall prevention collar 6a is used. Further, a flange-shaped belt holding flange 6b is provided on the outer circumference of the radial direction limiting roller 6 at a predetermined distance from the fall-prevention flange 6a, in parallel with the fall-prevention flange 6a and having a larger outer diameter than the fall-prevention flange 6a. .
[0010]
The plurality of conveyor frames 8 are connected by attaching the connecting portions 8b provided at both ends to the connecting portions 8b of another conveyor frame 8. Further, as shown in FIG. 4, the conveyor frame 8 is tiltably mounted on a frame mounting portion 9a inside a curve of a gantry 9 having a predetermined height.
Next, as shown in FIGS. 1 and 7, a vertical roller frame 12 is provided on the outer side of the curve of the gantry 9 below the conveyor frame 8, and a vertical roller 11 which is vertically rotatable is provided on the vertical roller frame 12. . The upper and lower vertical rollers 11 are provided with rotating shafts 11a and 11b, respectively, so that the upper and lower vertical rollers 11 can rotate independently. At the upper end of the vertical roller 11 located above, a flange portion larger than the outer diameter of the roller is provided to limit the upward movement of the belt. Next, there is provided a lower end support roller 13 that does not hinder the movement of the belt in the return direction and that is supported by a roller surface so that the belt does not move below a predetermined position. A roller 14 is provided to prevent the belt from falling down.
[0011]
As described above, the conveyor frame 8 and the conveyor frame 8 are connected to each other at an angle to form the horizontal curved portion 1b. The straight portion 1a of the belt conveyor device 1 is connected to the horizontal curved portion 1b. In the conveyor apparatus 1 of the embodiment, a return section 18 for turning the belt from the transport side to the return side is provided near one end of the horizontal curved section 1b. As shown in FIG. 5, the return portion 18 includes a return roller 18a for turning the belt from the transport side to the return side by about 180 °, and a roller 18b for holding the belt so as not to change the direction of the belt sent from the return roller 18a. 18c and a belt 18d, which is turned from the rollers 18b and 18c in a twisting direction, is turned in a vertical direction, and the roller 18d supports a surface inside the curve of the vertical belt.
In addition, a driving unit (not shown) for driving the belt is provided, and the belt 16 is stretched over the driving unit, the linear portion 1a, the horizontal curve portion 1b, and the return portion 18 so that the inside of the tunnel T as shown in FIG. Used to carry out earth and sand.
In this way, by connecting a number of the conveyor frames 8 to which the roller frames 3 are attached and attaching them to the gantry 9, it is possible to make the entire horizontal curved portion 1 b lighter. Construction and removal become easier.
[0012]
In the belt conveyor device 1 of the present embodiment, as shown in FIG. 8, the transport surface of the horizontal curve portion 1b is curved with a steep curvature, thereby securing a transport surface necessary for transporting earth and sand, and having a small curvature. It can be a curve radius. Both ends of the belt curved at a steep curvature along the curved roller group 2 are likely to fall toward the center of the belt, but the fall prevention roller 5 and the fall prevention flange 6a forcibly form a substantially J-shaped curve. A force is applied to move the belt inside or outside the curve due to the balance between the pulling force of the belt and the weight of the conveyed object, but the belt is forcibly kept on the rollers by the radial direction limiting rollers 4 and 6. To Further, the fall prevention roller 5 is located at a predetermined distance from the inner end roller 2d that supports the lower surface of the belt on the inside of the curve, and the belt end is moved inward with the lower surface in contact with the inner end roller 2d. Since the belt is located between the end roller 2d and the fall prevention roller 5, if the belt is wrinkled, it is stretched by both rollers, so that the belt is hardly wrinkled and can be used in a good state for a long time.
Further, the lower surface of the outer peripheral end of the belt 16 is held between the curved roller groups 2 by the belt holding flange 6b provided on the radial direction limiting roller 6, so that the center of the belt 16 as shown in FIG. Is prevented from rising and becoming a folded shape, and the curved shape of the belt is more reliably maintained.
[0013]
Further, in the belt conveyor device 1 of the present embodiment, the belt turned from the transport side to the return side is turned in the twisting direction by the return portion 18 so as to be sent vertically to the horizontal curve portion, and the belt inside the curve is provided. The surface is supported by a vertical roller 11 so as to be curved vertically. Therefore, it is possible to make the radius of the curve with a small curvature without deforming the belt in the width direction. In the belt conveyor device 1 of the present embodiment, the curve radius can be reduced to about 30 m by curving the belt on the transport side with a steep curvature and making the belt on the return side vertical, so that a very small curve radius can be obtained. can do. As a result, the degree of freedom of setting the conveyor path of the belt conveyor device 1 is increased, and it is very easy to use and space-saving construction can be performed. Therefore, efficient construction is achieved, and construction cost is reduced.
Further, in the belt conveyor device 1 of the present embodiment, the belt on the return side is set in the vertical direction, so that the portion not bent on the width side of the belt increases on the entire conveyor, thereby reducing the burden due to the deformation on the belt. Thus, the durability of the belt conveyor device 1 is improved.
[0014]
In addition, the upper and lower two rollers of the vertical roller 11 are configured so that their rotation axes rotate independently of each other, so that there is no difference between the rollers at the top and bottom of the belt, and the rollers are more evenly applied to the rollers to form a part of the belt. Avoid strong force.
Further, in the horizontal curve portion, when the belt pulling force is strong due to the lightness of the conveyed material, the belt material, the curve radius, and the like, the conveyor frame 8 is lowered by the frame mounting portion 9a of the gantry 9 on the outside of the curve. Since the belt is inclined so as to be easily balanced with the pulling force of the belt, the radius of the curve can be reduced more reliably.
[0015]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the curve radius of a horizontal curve part can be made very small, the correspondence of an installation place etc. improves, the construction cost can be suppressed very much, and it can be made lightweight and easy to carry out and remove, and the durability is improved. Can be improved.
Each roller of the curved roller group is mounted on a common roller frame, the roller frame is mounted on a conveyor frame, and the conveyor frame is mounted on a gantry, so that construction and removal can be further facilitated.
When the conveyor frame can be tilted with respect to the base, the radius of the curve can be reduced more reliably.
When at least one of the roller frames is capable of changing the position in the curve direction and the curve radius direction, the change of the curve radius and the adjustment of the belt tension can be easily performed, and a more convenient belt conveyor device can be provided.
The one provided with the lower end support roller for supporting the lower end of the belt which is vertically oriented on the return path and the one provided with the belt fall prevention means on the return path can securely hold the belt vertically and return the belt in the return direction. Can be moved smoothly.
A plurality of rollers that support the vertically oriented belt in a row, and each of the rollers is independently rotatable, can more reliably send the belt in the longitudinal direction.
When the falling-down preventing means and the radial direction limiting means are rollers, a simple structure in which the curve radius is reduced and the smooth conveyance by the belt is suppressed is realized.
The construction and removal of the belt conveyor device can be easily performed.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a belt conveyor device according to an embodiment.
FIG. 2 is an explanatory diagram of a belt conveyor device according to an embodiment.
FIG. 3 is an explanatory diagram of a belt conveyor device according to the embodiment.
FIG. 4 is an explanatory diagram of a belt conveyor device according to the embodiment.
FIG. 5 is an explanatory diagram of a return portion of the belt conveyor device according to the embodiment.
FIG. 6 is an explanatory diagram of a curved roller group and a roller frame of the belt conveyor device of the embodiment.
FIG. 7 is an explanatory view of a vertical roller of the belt conveyor device of the embodiment.
FIG. 8 is an explanatory diagram of a belt conveyor device according to the embodiment.
FIG. 9 is an explanatory diagram of a belt conveyor device according to the embodiment.
FIG. 10 is an explanatory diagram of a radial direction limiting roller outside a curve of the belt conveyor device of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Belt conveyor device 1a Linear part 1b Horizontal curve part 2 Curve roller group 2a Outer end roller 2b Outer roller 2c Inner roller 2d Inner end roller 3 Roller frame 3a Elongated hole 4 (inside the curve) Radial direction limiting roller 5 Roller (inside the curve) to prevent falling 6 Radial limit roller 6a (outside the curve) Rolling-down preventing flange 6b Belt holding flange 8 Conveyor frame 8a Mounting long hole 8b Connecting part 9 Stand 9a Frame mounting part 11 Vertical roller 11a Rotary shaft 11b Rotation Axis 12 Vertical roller frame 13 Lower end support roller 14 Fall prevention roller 16 Belt 18 Return unit 18a Return roller 18b Roller 18c Roller 18d Roller T Tunnel

Claims (7)

In a belt conveyor that supports the conveyance path and return path of a single belt with a large number of rollers, the rollers inside the curve that support the belts of the horizontal curve part are curved so that the belts of the horizontal curve part of the conveyance path are curved. A plurality of rollers are arranged in a substantially J-shape so as to incline at a steep angle to form a curve roller group, and the movement of both ends of the belt is restricted so that both ends of the curved belt do not fall toward the center of the belt As a preventive measure ,
An anti-falling roller (5) that restricts belt movement on the roller surface so that the end of the belt in the inside of the curve does not fall outside, and a belt that is outside the curve at the upper end of the radial direction limiting roller (6) described later. the end leaning prevention flange to limit movement so as not tilt down the inside (6a) and then and parallel to the provided falling preventing collar (6a) on the outer periphery of the radial restriction roller a predetermined distance downward falling prevention flange ( 6a) a belt holding flange (6b) having a larger outer diameter than the outside diameter is provided , and as a radial direction limiting means for limiting the movement of the curved belt in the curve radial direction ,
A radial limit roller (4) provided at the inner end of the curve of the belt to stop the movement of the belt in the conveying direction and stop at a roller surface so that the belt does not move inward from a predetermined position ; A radial direction limiting roller (6) which is provided at the end and does not hinder the movement of the belt in the conveying direction, and stops at a roller surface so that the belt does not move outside the curve from a predetermined position , is provided . A belt conveyor device provided with a diverting means for turning a belt in a twisting direction from a horizontal direction to a vertical direction, and a vertical roller for holding a surface inside a curve of a return path belt in a vertical direction. . A structure in which each roller of the curved roller group is mounted on a common roller frame, a plurality of the roller frames are mounted on a conveyor frame at predetermined intervals, and the conveyor frame is mounted on a gantry arranged at predetermined intervals in the conveyor transport direction. 2. The belt conveyor device according to 1. 3. The belt conveyor device according to claim 2, wherein the conveyor frame is tiltable with respect to the gantry. 4. The belt conveyor according to claim 2, wherein at least one of the plurality of roller frames has a horizontal curve direction for changing a curve curvature of the belt and a changeable position in a curve radial direction for adjusting belt tension. apparatus. The belt conveyor device according to any one of claims 1 to 4, further comprising a lower end support roller that supports a lower end of the vertically oriented belt on the return path. The belt conveyor device according to any one of claims 1 to 5, further comprising a fall prevention means for restricting a movement of a lower end of the belt so that the vertically oriented belt on the return path does not fall inside the curve. The belt conveyor device according to any one of claims 1 to 6, wherein the vertical rollers supporting the vertically oriented belt are a plurality of rollers arranged in series, and each of the rollers is independently rotatable.

Images