JP2000177829A - Carrier roller device of belt conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply a carrier roller device to a curve having a large curvature and to reduce its manufacturing cost. SOLUTION: This carrier roller device 1 of a belt conveyer is provided with a carrier mechanism 3 for carrying a belt 2, and a supporting rack 4 for supporting the carrier mechanism, and in the carrier mechanism 3, five roller supporting elements 5a-5e are combined to be mutually rotatable by hinging them, and carrier rollers 6 for carrying and supporting the belt 2 are installed in the respective roller supporting elements 5a-5e. To the roller supporting element 5b and the roller supporting element 5d, waved members 7,7 for adjustably holding their rotating positions are joined, respectively. On the other hand, joining parts 11,11 are formed at both ends of the carrier mechanism 3, and the joining parts can be joined to joined parts 13,13 formed at the respective ends of a connecting member 12, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier roller device for a belt conveyor used in a conveyance path including curves having various curvatures.

[0002]

2. Description of the Related Art Belt conveyors are transporting machines that have been widely used in the fields of civil engineering and construction. The objects to be transported cover a wide range such as aggregates, cement, and excavated materials.
Many of the old ones were portable, with a transport distance of several meters.

[0003] On the other hand, for example, when transporting and transporting excavated waste generated during excavation work in a mountain tunnel, a rail system combining a locomotive and a toro and a tire system using a vehicle such as a dump truck have been mainly used. In the system, there is a problem in that maintenance and maintenance of rails are costly, and in the case of the tire system, there are difficulties in entering / exiting pits, switching between actual and empty vehicles, changing directions, and the like, so that they can be used only in large section tunnels.

Under these circumstances, recently, a large-sized belt conveyor having a length of several tens of kilometers capable of transporting a large amount of soil over a long distance without human intervention has been developed.

If such a belt conveyor is used, depending on the scale of the tunnel, the excavated waste can be carried out at lower cost and higher efficiency than the conventional rail system or tire system.

[0006] Generally, an endless belt is hung on a tail pulley and a head pulley provided at both ends of a belt conveyor, and the belt is supported by carrier rollers arranged at intervals of several meters. In many cases, a belt driving motor is provided on the nose side or the cargo side (tail end side). In addition, by arranging the carrier roller that supports the belt so as to be convex downward instead of simply arranging it, a curved deformation called a trough angle is given to the belt passing over the roller, and the conveyed object is moved sideways. It is common to prevent spills.

Here, in such a belt conveyor, a special problem that cannot occur in a straight portion occurs in a curved portion. That is, in the curved portion, the belt may be pulled in the direction of the center of curvature due to the difference in the circumferential length between the inner circumference and the outer circumference or the tension applied to the belt, and may come off the carrier roller.

[0008] For this reason, as in the case of a bank provided on a high-speed road surface of an automobile, a device has been devised such that the trough angle of the carrier roller is not symmetrical and is inclined toward the center of curvature.

[0009]

However, in a configuration in which the trough angle is asymmetrical, the curvature of the curve is inevitably limited. For a curvature radius of about 200 mR or less,
If the curve is too tight, the belt may come off from the carrier roller, or if the belt is forcibly restrained, the pulling force becomes excessive on the outside of the curve and the belt is broken.

On the other hand, in order to solve this problem, the belt itself is formed into a U-shape or a cylindrical shape in a round shape, and only the tail side and the head side are flattened to load and unload the conveyed articles. Belt conveyors have also been developed. According to such belt conveyors, the belt is U-shaped or cylindrical during transportation, so there is a concern that the belt may come off even when applied to a curve with a large curvature. In addition, since the conveyed object is conveyed while being stored in the U-shaped or cylindrical internal space, there is an advantage that the conveyed object does not spill during the conveyance.

However, in such a belt conveyor, it is necessary to specially process the belt itself, thereby increasing the cost. Also, since the belt itself is preliminarily formed into a U-shape or a cylindrical shape, the shape of the belt on the return side is also increased. Must be returned in a state where it is held, as a result, the cross section of the conveyor including the carrier side and the return side becomes large, and there is a problem that the installation occupied space of the entire belt conveyor becomes large. Anyway, there was a problem that it was not suitable for temporary use.

The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a carrier roller device for a belt conveyor that can be applied to a curve having a large curvature and that can reduce manufacturing costs. I do.

[0013]

In order to achieve the above object, a carrier roller device for a belt conveyor according to the present invention is provided with a carrier roller for transporting and supporting a belt. A carrier mechanism formed by rotatably connecting a plurality of roller support elements, a support base for supporting the carrier mechanism, and an adjustment holding mechanism for holding the roller support elements so that the rotation position thereof can be adjusted. It is provided with.

Further, in the carrier roller device for a belt conveyor according to the present invention, the adjusting and holding mechanism is constituted by an up-and-down member having connection holes into which connection pins are inserted at both ends, and each end of the adjustment holding mechanism is provided with the support base and the support frame. Each of the connecting holes is connected to the roller supporting element of the carrier mechanism, and at least one of the connecting holes is formed of a plurality of connecting holes.

Further, in the carrier roller device for a belt conveyor according to the present invention, the adjusting and holding mechanism is constituted by a connecting member having each end connected to each end of the carrier mechanism.

Further, in the carrier roller device for a belt conveyor according to the present invention, the carrier rollers are arranged in a zigzag manner with respect to a vertical plane for each of the roller supporting elements.

In the carrier roller device of the belt conveyor according to the present invention, the belt is supported by carrier rollers provided on each of a plurality of roller supporting elements constituting the carrier mechanism. The roller support element is freely connected, and the rotational position of the roller support element is adjusted by operating the adjustment holding mechanism. When the belt of the belt conveyor travels linearly, the carrier holding mechanism has, for example, the same shape as that of the related art, that is, the rotational position of the roller support element is adjusted by the adjusting and holding mechanism so as to have a curved shape slightly convex downward. To adjust. With this configuration, the belt is supported at a predetermined trough angle by the carrier mechanism.

On the other hand, when the belt is conveyed along a curve having a radius of curvature of, for example, about 200 mR, the rotation of the roller supporting elements constituting the carrier mechanism is adjusted so that the overall shape of the carrier mechanism is U-shaped. Adjust the moving position with the adjustment holding mechanism. By doing so, the belt is deformed into a U-shaped cross section by the carrier mechanism, and becomes a deformed state suitable for the curve described above.

When the belt is further conveyed along a sharp curve, the rotational position of the roller supporting element constituting the carrier mechanism is adjusted by the adjusting and holding mechanism so that the overall shape of the carrier mechanism is annular. adjust. By doing so, the belt is deformed into a cylindrical cross section by the carrier mechanism, and is brought into a deformed state suitable for the sharp curve described above.

The manner in which the carrier mechanism is supported by the support gantry is arbitrary. For example, a method of fixing a roller support element located in the middle of the carrier mechanism to the support gantry among the plurality of roller support elements can be considered. In this case, the roller support element located in the middle of the carrier mechanism may be configured by directly attaching the carrier roller to the support base. On the other hand, a method is also conceivable in which the carrier mechanisms are configured as a pair, and the pair of carrier mechanisms are fixed to the support base at positions facing each other or connected rotatably. In this case, the base ends of the pair of carrier mechanisms may be fixedly or rotatably connected to the support base in a separated state, and a new roller support element may be provided therebetween. And about such a roller support element, as mentioned above, a carrier roller can be directly attached to a support base, and can be comprised.

The roller support elements need not all be rotatably connected to adjacent roller support elements, and may include a case where some of the roller support elements are not rotatably connected.

Here, the carrier rollers provided on the plurality of roller supporting elements may be arranged in the same vertical plane. However, such carrier rollers are staggered with respect to the vertical plane for each of the roller supporting elements. When the roller support elements are rotated in the direction in which the carrier mechanism closes in order to deform the belt into a U-shape or a cylindrical shape, there is no possibility that adjacent carrier rollers come into contact with each other.

The adjusting and holding mechanism is capable of adjusting the rotational positions of all the roller supporting elements as long as the belt can be deformed by the carrier mechanism so as to have a sectional shape corresponding to the curvature of the curve of the transport path. It is not necessary to configure, and it is conceivable that only the rotational position of some roller support elements needs to be adjusted. In addition, since it is common to provide a constant trough angle to the belt even on a straight path, the case where the belt is deformed at such a trough angle is defined as the maximum opening position of the carrier mechanism, It is conceivable to limit the rotation of each roller support element beyond that.

As described above, the adjusting and holding mechanism may be configured so that the rotational positions of all the roller supporting elements can be adjusted, or may be configured so that a part thereof can be adjusted. In addition, how to make the configuration is optional, for example, a manual hydraulic actuator such as a vehicle jack is interposed between the roller support element and the support base, and the roller support element is raised and lowered by the expansion and contraction operation. The rotation state can be changed, or an adjustment rod is attached so as to straddle the connecting portion of the hinged roller support element, and by operating the adjustment rod, the rotation angle between the roller support elements can be changed. It is possible to change the configuration.

Here, the adjusting and holding mechanism is constituted by an up-and-down member provided with connecting holes into which connecting pins are inserted at both ends, and each end of the adjusting and holding mechanism is connected to the support base and the roller supporting element of the carrier mechanism, respectively. In addition to the connection, if at least one of the connection holes has a plurality of connection holes, depending on the position of the connection hole into which the connection pin is inserted, the degree of undulation of the roller support element, that is, The moving position can be changed accurately and easily.

Further, if the attitude adjusting mechanism is constituted by connecting members whose both ends are respectively connected to the respective ends of the carrier mechanism, a structure in which a closed hollow space is stabilized inside by the connecting members and the carrier mechanism. The belt passing through the hollow space can be easily deformed into a U-shape or a cylindrical shape.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carrier roller device for a belt conveyor according to the present invention will be described below with reference to the accompanying drawings. It is to be noted that the same reference numerals are given to components and the like that are substantially the same as those in the conventional technology, and description thereof is omitted.

FIG. 1 is an overall view showing a carrier roller device of a belt conveyor according to this embodiment. As can be seen from the figure, the carrier roller device 1 of the belt conveyor according to the present embodiment includes a carrier mechanism 3 that transports and supports the belt 2 and a support base 4 that supports the carrier mechanism. Five roller support elements 5a-5
e are hingedly connected to each other so as to be rotatable with each other, and a belt 2 is attached to each of the roller support elements 5a to 5e.
Is provided with a carrier roller 6 for transporting and supporting the carrier.

The carrier rollers 6 are arranged in a zigzag manner with respect to the vertical plane for each of the roller supporting elements 5a to 5e, as can be clearly understood from FIG.
When the carrier mechanism 3 is closed from a curved shape to a U-shape or an annular shape by rotating the carrier roller
Contact between them can be prevented beforehand.

Here, among the roller support elements 5a to 5e, the roller support element 5 located at the center of the carrier mechanism 3
c is fixed to the support base 4 and the roller support element 5c
The weight of the entire carrier mechanism 3, the belt 2 conveyed to the carrier mechanism 3, and the conveyed goods loaded on the belt is supported by the support gantry 4 through the support frame 4.

The roller supporting element 5a and the roller supporting element 5b are rotatably connected by the hinge as described above. However, when the carrier mechanism 3 is opened at the position indicated by the one-dot chain line in FIG. It is configured so that
Such a maximum opening position is, for example, the belt 2 on a straight path.
May be appropriately set so that the optimum trough angle is given to Note that the roller supporting element 5d and the roller supporting element 5e have the same configuration.

The roller support element 5b and the roller support element 5d are respectively connected with up-and-down members 7, 7 as an adjusting and holding mechanism for holding their rotational positions (up and down angles with respect to a horizontal plane) in an adjustable manner. .

Each undulating member 7 is made of a strip-shaped steel material (for example, F
B), the upper end of which is provided with a connecting hole 9 for connecting to the roller supporting elements 5b and 5d via a connecting pin (not shown), and the lower end thereof is also provided with a connecting pin (not shown). A connection hole 8 for connecting to the support frame 4 is provided. Here, a plurality of connection holes 8 (four in the figure) are provided, and by changing the insertion positions of the connection pins, the rotation positions (undulation angles) of the roller support elements 5b and 5d are adjusted, and as a result, As can be seen from the figure, the open state of the entire carrier mechanism 3 can be changed.

On the other hand, connecting portions 11, 11 are provided at both ends of the carrier mechanism 3, that is, at the respective open ends of the roller supporting element 5a and the roller supporting element 5e, and the connecting portions are connected to a connecting member 12 as an adjustment holding mechanism. Can be connected to the connected parts 13, 13 provided at the respective ends.

In the carrier roller device 1 of the belt conveyor according to the present embodiment, the belt 2 is transported and supported by the carrier rollers 6 provided on each of the plurality of roller supporting elements 5a to 5e constituting the carrier mechanism 3. The roller supporting elements 5a to 5e are rotatably connected to each other, and the roller supporting elements 5a to 5e are adjusted by using an up-and-down member 7 and a connecting member 12 which are adjusting and holding mechanisms.
It is possible to adjust the rotational position of e, and thus the open state of the carrier mechanism 3.

More specifically, when the belt 2 of the belt conveyor runs linearly, the carrier mechanism 3 has a shape similar to the conventional one, that is, a curved shape that is slightly convex downward. The position of the connecting hole 8 is appropriately selected, a connecting pin is inserted into the connecting hole 8, the undulating member 7 is connected to the support base 4, and the rotational position (the undulating angle) of the roller support elements 5b and 5d is adjusted. This way,
The belt 2 is transported and supported at a predetermined trough angle by the carrier mechanism 3 (the open state shown by the dashed line in FIG. 1).

Next, when the belt 2 travels along a gentle curve that is not a straight line, the position of the connection hole 8 of the undulating member 7 into which the connection pin is inserted is changed, so that the roller support elements 5b, 5d Rotation position (up / down angle)
Is adjusted, the carrier mechanism 3 is closed, and the state shifts to, for example, the open state shown by the solid line in FIG. 1 to increase the trough angle of the belt 2.

When the radius of curvature of the curve is further smaller, the carrier mechanism 3 is closed and the belt 2 is deformed in the same procedure as described above while sequentially lowering the position of the connection hole 8 into which the connection pin is inserted. The trough angle should be increased.

On the other hand, when the belt 2 is conveyed along a curve having a radius of curvature of, for example, about 200 mR, the position of the connecting hole 8 into which the connecting pin is inserted is changed to the lowest one as shown in FIG. Roller support elements 5b, 5d
Is raised to, for example, about 60 degrees with respect to the horizontal plane, and the connected portions 13 and 13 provided at both ends of the connecting member 12 are connected to the connecting portions 11 and 11 provided at each end of the roller support element 5a and the roller support element 5e. Connect each one.

In this manner, the carrier mechanism 3 is held so as to have a U-shape as a whole, and the belt 2 is deformed into a U-shaped cross-section by the carrier mechanism 3 so as to be suitable for the above-mentioned curve. State.

Next, when the belt 2 is further conveyed along a sharp curve, as shown in FIG.
Is removed, and another connecting member 21 is connected to the connecting portions 11 provided at each end of the roller supporting element 5a and the roller supporting element 5e in the same manner as the connecting member 12.

In this way, the carrier mechanism 3 is held so as to be annular as a whole, and the belt 2 is deformed into a cylindrical cross section by the carrier mechanism 3 so as to be in a deformed state suitable for the above-mentioned curve. Become.

As described above, according to the carrier roller device 1 of the belt conveyor according to the present embodiment, the opening and closing of the carrier mechanism 3 is achieved by using the up-and-down member 7, the connecting member 12, or the connecting member 21 as the adjusting and holding mechanism. This makes it possible to change the state, and in turn, change the cross-sectional shape of the belt 2 held by the carrier mechanism according to the curvature of the curve.

Therefore, even if the transport path is mixed with various linear portions and curved portions having various curvatures, the carrier roller device 1 of the present embodiment can be used to change the curve state of the path. The belt 2 can be deformed into an appropriate cross-sectional shape in accordance with the condition, and the belt is detached from the carrier roller as in the related art, or an excessive tensile stress due to a difference in circumference acts on the belt to break the belt. Such a situation can be prevented beforehand. In addition, since it is a highly versatile device that can be applied to a conveyance path with an arbitrary curvature including a straight line, the layout of the belt conveyor must be changed according to the ever-changing site conditions. However, it is possible to easily cope with such a situation. Furthermore, since a general-purpose general-purpose belt can be used, it can be easily incorporated into an existing belt conveyor, and the equipment cost of the entire belt conveyor can be significantly reduced.

The carrier roller device 1 of the belt conveyor according to the present embodiment does not previously process the belt 2 itself into a cylindrical shape or a U-shape as described above, so that the belt 2 is returned in a flat state on the return side. As a result, it is needless to say that the entire apparatus can be made compact.

Further, according to the carrier roller device 1 of the belt conveyor according to the present embodiment, the adjusting and holding mechanism is constituted by the undulating member 7 provided with the connecting holes 8 and 9 into which the connecting pins are inserted at both ends. The ends are connected to the support base 4 and the roller support elements 5b and 5d of the carrier mechanism 3, respectively, and the connection holes 8 on the support base 4 side are composed of a plurality of holes. Depending on,
The degree of undulation of the roller support elements 5b, 5d, that is, the rotational position, can be accurately and easily changed.

Further, according to the carrier roller device 1 of the belt conveyor according to the present embodiment, both ends of the carrier mechanism 3
Since the posture adjusting mechanism is constituted by the connecting members 12 and 21 connected to the respective ends of the hollow member, the closed hollow space is formed in the inside thereof by the connecting member and the carrier mechanism 3 with a stable structure, and the hollow The belt 2 passing through the space can be easily deformed into a U-shape or a cylindrical shape.

Therefore, even if the transport path is sharply curved, it is possible to prevent the general-purpose belt from being cut due to an excessive tensile force acting on the general-purpose belt or coming off the carrier roller. .

Further, according to the carrier roller apparatus 1 of the belt conveyor according to the present embodiment, the carrier rollers 6 are arranged in a zigzag manner with respect to the vertical plane for each of the roller supporting elements 5a to 5e. When the elements 5a to 5e are rotated to close the carrier mechanism 3 from a curved shape to a U shape or an annular shape, contact between the carrier rollers 6 can be prevented beforehand.

In the present embodiment, the weight of the carrier mechanism 3 is supported by the support frame 4 by fixing the roller support element 5c located in the middle of the carrier mechanism 3 to the support frame 4; As shown in FIG. 4, the carrier mechanism is composed of a pair of carrier mechanisms 3a and 3b, and the pair of carrier mechanisms are opposed to each other so that the base end of the roller support element 5b of the carrier mechanism 3a. The side and the base end side of the roller support element 5d of the carrier mechanism 3b may be rotatably connected to the support base 4, respectively.

In such a configuration, substantially the same operation and effect as in the above-described embodiment can be obtained. The roller support element 5
If the separation distance between the base end side of the roller b and the base end side of the roller supporting element 5d is large, a new carrier roller is separately attached to the support base 4 between them, and the center of the belt 2 is fixed by the carrier roller. It may be configured to support the part.

In the present embodiment, the adjusting and holding mechanism is constituted by the up-and-down member 7 having the connecting holes 8 and 9 provided at both ends of the strip-shaped steel material. However, the up-and-down member is replaced by a manual hydraulic actuator instead. You may comprise.

In such a configuration, the roller support elements 5b and 5d can be raised and lowered by the expansion and contraction operation of the manual hydraulic actuator to change the rotation state thereof.

As shown in FIG. 5, an adjusting rod 31 is attached so as to straddle a connecting portion of the roller supporting elements 5a to 5e which are hinged, and an adjusting bolt 3 of the adjusting rod 31 is attached.
The rotation angle between the roller support elements 5a to 5e may be changed by performing an operation such as screwing or loosening the roller 2. In this case, the adjustment rod 31
Function as an adjustment holding mechanism, the undulating member 7, the connecting member 12 or the connecting member 21 used in the above-described embodiment becomes unnecessary, and the roller supporting elements 5a, 5e are used.
Can also be omitted.

[0055]

As described above, according to the carrier roller device of the belt conveyor according to the first aspect of the present invention, the open state of the carrier mechanism is changed by using the adjusting and holding mechanism, and the carrier is held by the carrier mechanism. It becomes possible to deform the cross-sectional shape of the belt according to the curvature of the curve.

Therefore, even when a straight portion or a curved portion having various curvatures are mixed and mixed in the transport path, the belt is deformed into an appropriate cross-sectional shape according to the curved state of the path. As a result, it is possible to prevent the belt from being detached from the carrier roller and the belt from being damaged due to an excessive tensile stress caused by the difference in the circumferential length acting on the belt.

Further, according to the carrier roller device of the belt conveyor of the present invention, the degree of undulation of the roller support element, that is, the rotational position, can be accurately determined according to the position of the connection hole into which the connection pin is inserted. In addition, there is an operational effect that it can be easily changed.

Further, according to the carrier roller device of the belt conveyor of the present invention according to the third aspect, a closed hollow space is formed in the inside thereof with a stable structure by the connecting member and the carrier mechanism. The belt passing through the belt can be easily deformed into a U-shape or a cylindrical shape. As a result, even if the conveying path is a sharp curve, the general-purpose belt may be cut due to an excessive tensile force, or the carrier may be cut. There is also an operational effect that it is possible to prevent a situation such as detachment from the roller beforehand.

According to the carrier roller device of the belt conveyor of the present invention, the roller support element is rotated to close the carrier mechanism from a curved shape to a U-shape or an annular shape. At the same time, there is an effect that the contact between the carrier rollers can be prevented beforehand.

[0060]

[Brief description of the drawings]

FIG. 1 is a view of a carrier roller device 1 of a belt conveyor according to an embodiment, wherein (a) is an overall front view, and (b) is an overall plan view.

FIG. 2 shows an up-and-down member 7 so that the belt 2 is deformed into a U-shape.
FIG. 9 is a diagram showing a state in which the carrier mechanism 3 is held in an open state using the connecting member 12 and FIG.
(b) is an overall plan view.

FIG. 3 shows an undulating member 7 so that the belt 2 is deformed into a cylindrical shape.
FIG. 9A is a diagram showing a state in which the carrier mechanism 3 is held in an open state using the connecting member 21 and FIG.
(b) is an overall plan view.

FIG. 4 is a view showing a carrier roller device of a belt conveyor according to a modified example, where (a) is an overall front view and (b) is an overall plan view.

FIG. 5 is a detailed front view showing a modification of the adjustment holding mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Carrier roller device of belt conveyor 2 Belt 3, 3a, 3b Carrier mechanism 4 Supporting cradle 5a-5e Roller support element 6 Carrier roller 7 Undulating member (adjustment holding mechanism) 8 Connecting hole 12, 21 Connecting member (adjustment holding mechanism) 31 Adjustment rod (adjustment holding mechanism)

Claims (4)

[Claims] A carrier mechanism for rotatably connecting a plurality of roller support elements each provided with a carrier roller for carrying and supporting a belt; a support base for supporting the carrier mechanism; and the roller support. A carrier roller device for a belt conveyor, comprising: an adjustment holding mechanism that holds the element so that its rotational position can be adjusted. 2. The apparatus according to claim 1, wherein the adjusting and holding mechanism comprises an up-and-down member having a connecting hole into which a connecting pin is inserted at both ends, and each end of the adjusting and holding mechanism is connected to the support base and the roller supporting element of the carrier mechanism. 2. The carrier roller device for a belt conveyor according to claim 1, wherein at least one of the connection holes has a plurality of connection holes. 3. The carrier roller device for a belt conveyor according to claim 1, wherein said adjusting and holding mechanism comprises a connecting member having each end connected to each end of said carrier mechanism. 4. The carrier roller device for a belt conveyor according to claim 1, wherein the carrier rollers are arranged in a zigzag manner with respect to a vertical plane for each of the roller supporting elements.