JPH1129211A - Carrier roller supporting device for belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply carry out the replacement operation of a carrier roller by one worker. SOLUTION: In a carrier roller supporting device for a belt conveyor, where a center carrier roller 3 is supported between inner side arms 22a and 22b with its axial line kept horizontal, and respective side carrier rollers 4 and 5 are supported between an outer side arm 23 and the inner side arm 22a, and between an outer side arm 23b and the inner side arm 22b in such a way that the axial line of each side carrier roller is intersected with the axial line of the center carrier roller 3 with a specified angle, so that the transporting surface of an endless belt is kept in a ship bottom shape by the respective carrier rollers 3, 4 and 5, the outer side arms 23a and 23b are so designed that at least the roller bearing parts of these arms can be moved to the direction parting from the endless belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a carrier roller of a belt conveyor, and more particularly to a device for supporting a carrier roller of a belt conveyor capable of easily replacing a carrier roller.

[0002]

2. Description of the Related Art FIG. 4 shows a section of a belt conveyor for transporting, for example, coal, coke, ore or cement on the transport surface side. In general, the transport surface 1a of this type of belt conveyor 1 is It is held by a trough (ship bottom) type carrier roller 2.

The trough-type carrier roller 2 includes one center carrier roller 3 and two side carrier rollers 4 and 5 disposed on the left and right sides thereof.
These three carrier rollers 3, 4, and 5 are supported by the following supporting device 6.

[0004] That is, the support device 6 includes a pedestal 7 made of, for example, an inverted V-shaped angle material disposed so as to be orthogonal to the transport direction of the transport surface 1 a of the belt conveyor 1.
A pair of inner arms 8a and 8b having the same height are provided upright at a predetermined interval at the center of the gantry 7, and the left and right sides of the gantry 7 have heights higher than the inner arms 8a and 8b. Tall outer arms 9a, 9b are respectively provided upright. Although not shown, a bearing groove into which the rotating shaft of the roller is dropped is formed at the upper end of each arm.

According to this, the inner arm 8 on the central portion side
The center carrier roller 3 is held with its axis substantially horizontal between a and 8b. The left side carrier roller 4 is held between the outer arm 9a and one inner arm 8a such that the axis of the left side carrier roller 4 intersects the axis of the center carrier roller 3 at a predetermined angle. Similarly, between the outer arm 9b and the other inner arm 8b, the right side carrier roller 5 is held such that each axis thereof intersects the axis of the center carrier roller 3 at a predetermined angle.

In this manner, the transport surface 1a of the belt conveyor 1 is supported in a ship bottom shape.
A conveyor hood 10 is placed on the top to prevent scattering of dust and the like.
Is covered over its entire length. The conveyor hood 10 is formed of a rigid frame, and rubber skirt plates 11, 11 are provided on both side walls to allow clearance between the conveyor hood 10 and the transport surface 1a of the belt conveyor 1.

[0007]

By the way, especially in the belt conveyor 1 which conveys powder such as cement or the like ore, the dust enters the bearing of the carrier roller 2 and so-called galling occurs.

Therefore, the carrier roller 2 needs to be replaced. Conventionally, the replacement work is performed by two workers. That is, the side carrier rollers 4,
In the case of No. 5, one person lifts the belt on the upper surface of the roller with an iron bar or the like, and a distance of about 80 to
A gap of 00 mm is made, and the remaining one lifts the roller and removes it from the arm.

In this case, as shown in FIG. 5, each side carrier roller 4, 5 must be lifted in parallel with its mounting angle, which makes replacement work more difficult. Further, since the center carrier roller 3 is inaccessible, two workers enter between the transport surface 1a of the belt conveyor 1 and a return surface (not shown), and one of them is upper body. The center of the belt is pushed up, and the remaining one lifts the roller and removes it from the arm. Even in this case, the center carrier roller 3 must be lifted in parallel with the mounting angle.

Incidentally, one carrier roller 2 used in a large-sized conveyor device for conveying ore has a shaft length of 240 mm, a diameter of about 160 mm, and a weight of 7 to 8 k.
g, which are arranged at intervals of about 1 m as three rows, and if the belt length is 60 m, 3 × 60 = 1
Eighty rollers must be replaced by two people.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances as described above, and has as its object to provide a carrier roller support for a belt conveyor which allows a worker to easily replace a carrier roller. It is to provide a device.

[0012]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a gantry disposed below a transport surface of an endless transport belt in a direction substantially perpendicular to the transport direction, and a central portion of the gantry. It is erected at a predetermined interval on the side,
A pair of left and right first and second arms each having a roller bearing portion at each upper end thereof, and a vertically higher height dimension than the first and second arms at the left and right ends of the gantry. And a third arm having a portion, supporting a center carrier roller between the first and second arms with the axis thereof being substantially horizontal, and between the first arm and the third arm and the second arm. And the fourth above
A belt that supports side carrier rollers between the arms such that their axes intersect with the axis of the center carrier roller at a predetermined angle, and holds the transport surface of the endless transport belt in a ship bottom shape with these carrier rollers. In the carrier roller support device for a conveyor, the third and fourth arms are characterized in that at least their roller bearings are movable in a direction away from the endless conveyor belt.

In this case, the third and fourth arms are
A movable arm including the roller bearing portion rotatably connected to the support portion via a hinge so as to be rotatable in a direction away from the endless conveyance belt. Is preferred.

As described above, since the roller bearing portions of the third and fourth arms can be moved in a direction away from the endless conveyor belt, the side carrier roller can be moved to the outside of the belt without the need to lift the belt as in the prior art. Can be pulled out towards you.

A second feature of the present invention is that at least one of the first and second arms is detachable from the gantry. Alternatively, the movable base may be erected on the movable base that is detachable from the gantry.

According to this, the operator pulls out the center carrier roller supported by the first and second arms to the outside of the belt like the side carrier roller without entering the belt conveyor. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, in order to better understand the technical concept of the present invention, referring to FIGS.
A preferred embodiment will be described. Although the belt conveyor and the conveyor hood are not shown in these drawings, since these have the same configuration as the conventional one, please refer to FIG. 4 described above.

In FIG. 1, the entire front surface of the carrier roller supporting device is indicated by reference numeral 20. According to this, the carrier roller supporting device 20 has a transport surface 1a of the endless transport belt 1 (see FIG. 4). Is provided with a gantry 21 arranged at a lower part of the frame so as to be orthogonal to the conveying direction. The pedestal 21 may be, for example, an inverted V-shaped rail-shaped angle member as in the conventional example described above.

A pair of inner arms 22a and 22b that support the center carrier roller 3 with its axis substantially horizontal are provided upright at the center of the mount 21. Also, one inner arm 22 a
The outer arm 23a supporting one side carrier roller 4 between the outer arm 23b and the outer arm 23b supporting the other side carrier roller 5 between the other inner arm 22b
And are erected.

The outer arms 23a, 23b are higher in height than the inner arms 22a, 22b, so that the side carrier rollers 4, 5 are supported such that their axes intersect the axis of the center carrier roller 3 at a predetermined angle. Thereby, the transport surface 1a of the belt conveyor 1 is held in a ship bottom shape.

The upper ends of the inner arms 22a and 22b and the outer arms 23a and 23b are formed with roller bearings.
And 22b, and the outer arms 23a and 23b are symmetrical with respect to each other. Therefore, referring to FIG. 2, the roller bearing portions of the inner arm 22b and the outer arm 23b which are paired with respect to the support of the one side carrier roller 5 will be described. And the roller bearings of the inner arm 22a and the outer arm 23a, which are paired with respect to the support of the other side carrier roller 4, are not described.

First, the side carrier roller 5 is provided with rotation support shafts 51, 51 at both ends. In this case, each rotation support shaft 51 has a cutout surface cut off parallel to its axis. 52, 52 are provided. The center carrier roller 3 and the side carrier roller 4 also have a similar rotation support shaft.

The inner arm 22b includes an inner wall 221 that stands vertically and faces the inner arm 22a, and an outer wall 222 that faces the outer arm 23b.
A bearing groove 223 into which the rotation support shaft of the center carrier roller 3 is dropped is formed at the upper end of 21.

A bearing groove 224 into which one of the rotation support shafts 51 of the side carrier roller 5 is dropped is formed at the upper end of the outer wall 222 of the inner arm 22b. In this case, the bearing groove 224 is formed. Is formed on the upper surface 225 of the outer side wall 222 so as to be parallel to the dropping direction of the side carrier roller 5.

Similarly, the upper end 231 of the outer arm 23b
Also, a bearing groove 232 into which the other rotation support shaft 51 of the side carrier roller 5 is dropped is formed. The upper end 231 of the outer arm 23b including the bearing groove 232 is also inclined so as to be parallel to the dropping direction of the side carrier roller 5. That is, the upper end 231 of the outer arm 23b and the upper surface 225 of the outer wall 222 are parallel surfaces.

In the present invention, the side carrier rollers 4 and 5
The roller bearing portion, that is, the bearing groove 232 can be moved outside the belt conveyor 1 in order to facilitate replacement of the belt conveyor 1.

As an example of the configuration, in this embodiment,
The outer arms 23a and 23b are both divided into a column 101 fixed to the gantry 21 and a movable arm 102 including the bearing groove 232 at the upper end. It is possible to rotate toward. In the normal state, the support 10
1 and the movable arm 102 are integrally connected by a bolt 104 provided on a flange portion of a hinge 103.

Further, in order to facilitate replacement of the center carrier roller 3, as shown in FIG. 3, there is provided a movable base 110 which can be attached to and detached from the gantry 21, and an inner side for supporting the center carrier roller 3. Arms 22a, 22b
Is provided on the movable base 110.

In this embodiment, the movable base 110 is formed of an inverted V-shaped rail-shaped angle member like the mount 21 so that the movable base 110 is stably mounted on the mount 21. At a predetermined position on the gantry 21, there is provided a stopper 111 into which one end of the movable base 110 is inserted and locked.
The other end of the movable base 110 is fixed to the gantry 21 by a locking tool 112.

In this case, the locking member 112 is formed of an inverted V-shaped angle material formed so as to cover the other end of the movable base 110, and has one end in the longitudinal direction for hooking on the edge of the gantry 21. A locking piece 113 is provided.

One side of the locking member 112 in the width direction, that is, the side covering the other end of the movable base 110 is made thinner by the thickness of the movable base 110, and has a different thickness. An insertion hole 115 for the bolt 114 is formed in the meat portion. The pedestal 21 is also provided with a bolt insertion hole 116 communicating with the insertion hole 115, and although not shown, a nut, which is a counterpart of the bolt 114, is welded to the back surface of the bolt insertion hole 116. .

Each of the carrier rollers 3, 4, and 5 shown in FIG. 1 has inner arms 22a and 22b and outer arms 23a and 23b.
, The carrier rollers 3, 4, and 5 are exchanged as follows.

First, in order to remove the side carrier rollers 4 and 5, the bolts 104 fixing the hinges 103 of the outer arms 23a and 23b are removed, and the movable arms 10 are removed.
2 and 102 are turned toward the outside of the belt conveyor 1 (the direction of arrow A in FIG. 1).

In practice, work is performed on one side at a time. In this case, the side carrier roller 4 or 5 is held with one hand.
Is held from below, the movable arm 102 is rotated with the other hand. Thus, the side carrier roller can be pulled out to the side without lifting the transport surface 1a of the belt conveyor 1 as in the conventional case.

After the side carrier rollers 4 and 5 are removed in this way, the bolts 114 are removed and the locking members 112 are removed.
Is removed from the gantry 21. Then, the movable base 110 is slightly slid along the gantry 21 to release the engagement with the stopper 111.

As a result, the movable table 110 becomes free with respect to the gantry 21, so that the movable table 110 is pulled out to the side of the belt conveyor 1 and is supported by the inner arms 22a and 22b in a free working space. The center carrier roller 3 can be replaced with a new one.

When the new center carrier roller 3 is mounted on the inner arms 22a and 22b, the movable base 110 is mounted on the gantry 21 again, one end of which is locked by the stopper 111, and the movable base 110 The other end is covered with the locking tool 112, and the locking tool 112 is fixed to the gantry 21 with the bolt 114.

Next, new side carrier rollers 4 and 5
But the steps are the same,
The right side carrier roller 5 will be described.
First, one rotation support shaft 5 of the side carrier roller 5
1 is fitted into the bearing groove 224 on the inner arm 22b side.

Next, while supporting the side carrier roller 5 with one hand, the movable arm 102 of the outer arm 23b is rotated with the other hand in the opposite direction, that is, in the conveyor belt 1 side. The other rotation support shaft 51 of the side carrier roller 5 is fitted to the reference numeral 232 to raise the movable arm 102. And finally, bolt 104
The hinge 103 is tightened.

As described above, according to the present invention, each of the carrier rollers 3, 4, and 5 can be replaced without lifting the transport surface 1a of the belt conveyor 1. Therefore, only one worker is required. Also, since there is no need to lift the transport surface 1a of the belt conveyor 1,
The clearance (see FIG. 4) between the conveyor hood 10 and the transport surface 1a of the belt conveyor 1 can be further reduced.

In the above embodiment, the outer arm 23
The movable arms 102a and 23b are connected to the support 101 by hinges 103.
2 may be completely removable from the support 101. Further, the movable arm 102 may be nested up and down with respect to the column 101 or may be slidable with respect to the column 101 in a direction away from the belt conveyor 1.

Further, at least one of the inner arms 22a, 22b may be movable or detachable with respect to the gantry 21. The roller bearing portion may be a bearing hole as well as the bearing groove as in the above embodiment.

[0043]

As described above, according to the present invention, each carrier roller can be replaced without lifting the transport surface of the belt conveyor, so that the replacement operation can be performed by one person and easily. Becomes possible.

Further, since there is no need to raise the transport surface of the belt conveyor, the clearance between the conveyor hood and the transport surface of the belt conveyor can be narrowed, and therefore, the belt conveyor device itself can be reduced in size. And so on.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a carrier roller supporting device according to the present invention.

FIG. 2 is a perspective view showing a main part of an inner arm and an outer arm in the embodiment.

FIG. 3 is an exploded perspective view showing a detachable structure of an inner arm in the embodiment.

FIG. 4 is a front view showing a conventional carrier roller supporting device together with a cross section on a transport surface side of a belt conveyor.

FIG. 5 is a schematic diagram for explaining a roller replacement operation procedure of the conventional carrier roller supporting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt conveyor 1a Transport surface 3 Center carrier roller 4, 5 Side carrier roller 10 Conveyor hood 21 Stand 22a, 22b Inner arm 23a, 23b Outer arm 101 Support part 102 Movable arm 103 Hinge 110 Movable table 111 Stopper 112 Locking member 223 232 Bearing groove

Claims (4)

[Claims] 1. A frame disposed in a lower part of a transport surface of an endless transport belt in a direction substantially orthogonal to a transport direction thereof, and a stand provided at a central portion of the frame at a predetermined interval,
A pair of left and right first and second arms each having a roller bearing portion at each upper end thereof, and a vertically higher height dimension than the first and second arms at the left and right ends of the gantry. And a third arm having a portion, supporting a center carrier roller between the first and second arms with the axis thereof being substantially horizontal, and between the first arm and the third arm and the second arm. And the fourth above
A belt that supports side carrier rollers between the arms such that their axes intersect with the axis of the center carrier roller at a predetermined angle, and holds the transport surface of the endless transport belt in a ship bottom shape with these carrier rollers. In the carrier roller supporting device for a conveyor, the third and fourth arms are configured such that at least their roller bearings are movable in a direction away from the endless conveyor belt. . 2. The method according to claim 1, wherein the third arm and the fourth arm are connected to a support erected on the gantry, and the support is pivotally connected to the support via a hinge in a direction away from the endless conveyor belt. The carrier roller supporting device for a belt conveyor according to claim 1, comprising a movable arm including a roller bearing portion. 3. The carrier roller supporting device for a belt conveyor according to claim 1, wherein at least one of the first and second arms is detachable from the gantry. 4. The belt conveyor according to claim 1, further comprising a movable table detachably attached to the gantry, wherein the first and second arms are erected on the movable table. Carrier roller support device.