JPH085535B2 - Roller device for conveyor belt - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller device such as an idler device for a conveyor belt, and more particularly to a device which facilitates the replacement work of the roller.

[0002]

2. Description of the Related Art Conventionally, a conveyor belt is supported by a roller device at predetermined intervals in the transfer direction. For example, an ascending belt on which a conveyed product is placed is supported by a forward idler, and an unloading descending belt is guided by a return idler.

As shown in FIG. 3, for example, the ascending belt 1
The known troughing idler for supporting the belt 1 includes a center roller 2 arranged horizontally and side rollers 3 and 4 arranged to be inclined toward the center so as to follow the trough of the belt 1.

A pair of center brackets 5 and 5 are provided for each of the rollers 2, 3 and 4, respectively.
In addition, the side brackets 6, 6 and 7, 7 are detachably supported by a shaft, and these bracket groups are erected on a support bar 8 arranged in the transverse direction of the belt 1.

When this idler device is attached and installed, spacer members 10 and 10 are placed on the machine frames 9 and 9 located on the lower sides of the belt 1 and are fixed by fixing means 11 and 11 such as bolts. Next, the support bar 8 is installed on the spacer members 10 and 10 and fixed by fixing means 12 and 12 such as bolts.

[0006]

In the conventional example shown in FIG. 3, in order to replace the rollers 2, 3, 4 in accordance with the wear of the rollers 2, 3, it is indispensable to attach and detach the spacer members 10, 10.

That is, in the mounting state of FIG. 3A, even if the support bar 8 is freed by releasing the fixing means 12, 12, the rollers 2, 3, 4 follow the trough shape of the belt 1. Since it is attached to the belt 1, it is impossible to pull out the idler device to the side of the belt 1.

Therefore, as shown in FIG. 3B, not only the fixing means 12 and 12 but also the fixing means 11 and 11 are released together, and the machine frames 9 and 9, the spacer members 10 and 10, and the support bar 8 are released. The spacer members 10 and 10 must be separated from each other and taken out between the machine frame 9 and the support bar 8.
Then, the idler device is moved below the belt 1, whereby the idler device can be pulled out to the side without interfering with the trough-shaped belt 1 for the first time.

Incidentally, in order to mount the idler device in its original position again after replacing the rollers 2, 3, 4 with the idler device pulled out to the side, as shown in FIG. 3 (B). After the idler device is lifted from the state in which the device is stored in the machine frames 9 and 9, the spacer member 10 is interposed between the support bar 8 and the machine frame 9, and then the fixing means 11 and 1 are attached.
Tighten 1 and 12, 12.

Therefore, in the conventionally known device, in order to replace a worn roller, extremely complicated work and heavy labor are forced, and it takes a long time for a plurality of workers in the present situation. is there. In particular, a large number of roller devices such as idler devices are provided closely spaced in the transfer direction of the conveyor belt, which poses a serious problem that the operation must be stopped for a long time when the roller replacement time comes.

[0011]

Means for Solving the Problems The present invention provides a roller device for a conveyor belt, which solves the above-mentioned problems. The first means of the present invention is a bracket installed upright on a support bar. In a device that removably supports rollers ,
The support bar is attached to the frame fixed and attached to the frame.
The support bar, and the support bar
The frame is provided with a fixing means for non-rotatably fixing,
Both side edges of the slit formed in the peripheral side portion of the support bar
The bracket so that the bracket is in an upright position.
When the holding bar is turned in the direction of belt travel
While supporting one side edge of the slit, the bracket
The support bar so that the
The other side edge of the slit when rotated opposite to each other
The point is that a stopper for abutting and supporting is fixedly mounted on the frame .

According to the second aspect of the present invention, in a device in which a roller is detachably supported by a bracket erected on a support bar, a frame is attached in a direction traversing a conveyor belt. It is fixed and the support bar is attached to the frame so as to be rotatable and fixed about the axis of the frame and movable and fixed in the axial direction of the frame.

Further, according to the third aspect of the present invention, in a device in which a roller is detachably supported by each of a plurality of brackets set upright on a support bar, each support bar is A plurality of unit bars divided corresponding to the rollers are configured, and each unit bar can be pivotally fixed around the axis of the frame and fixed in the axial direction of the frame with respect to the frame mounted and fixed in the direction crossing the conveyor belt. The point is that it is mounted so that it can be moved and fixed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a frame 21 made of a steel pipe having a circular cross section has seat members 22 and 22 fixed to both ends by welding or the like, and a wing-piece-like mounting piece 23 at the lower part of the seat member 22. It is fixed by welding. This mounting piece 2
3, 23 have mounting holes 24 for fixing bolts,
As a conventional example, it is attached to the machine frames 9 and 9 shown in FIG. 3, whereby the frame 21 is installed in the transverse direction of the belt.

A support bar 25 is mounted on the frame 21. As shown in FIG. 1C, the support bar 25 is
Slit 26 with the lower part of the steel pipe cut out over the entire length
And is extrapolated to the frame 21. That is, the support bar 2
5 can be inserted into and removed from the frame 21 by sliding in the axial direction from one end to the other end of the frame 21, and the support bar 25 can be mounted on the outer periphery of the frame 21 in a state of being externally inserted. It is rotatable about its axis.

In the illustrated embodiment, the roller device is embodied as a troughing idler device and includes a center roller 27 arranged horizontally and side rollers 28, 29 arranged obliquely toward the center. For this reason, the support bar 25 includes a pair of center brackets 30 and 30 and side brackets 31 and 31 for supporting the rollers 27, 28 and 29, respectively.
32 and 32 are erected and fixed by welding or the like.

As shown in FIG. 2, each bracket 30, 31, 32 has a groove 33 whose upper part is opened, and the spindle 34 of each roller 27, 28, 29 is fitted into the groove 33. There is. Therefore, the rollers 27, 28, and 29 can lift the support shaft 34 out of the groove 33 by lifting. The rollers 27, 28 and 29 are freely rotatable around the support shaft 34.

A stopper 3 for positioning the support bar 25 in a state where the bracket is erected upright.
5 are provided. That is, the stopper 35 is provided along the one side edge of the slit 26 of the support bar 25 so that the frame 2
1 is extended in the longitudinal direction. Specifically, between the pair of seat members 22, 22, an elongated steel piece is attached to the frame 2
The stopper 35 can be configured by being fixed to 1 by welding or the like.

Therefore, the support bar 25 is rotatable toward the opposite side of the stopper 35. In the present embodiment, the support bar 25 can be inserted into and removed from the frame 21 while the support bar 25 is rotated so that the brackets 30, 31, 32 change their posture from the upright posture to the prone posture. As shown in FIG. 1 (D), at least one of the seat members 22 forms a passage space 36 of the frame 21.

In the illustrated embodiment, the support bar 25
Constitutes a plurality of unit bars divided corresponding to the rollers 27, 28 and 29, that is, a center bar 37 and side bars 38 and 39.

The center bar 37 is provided with fixing means 40, 40 composed of a pair of set bolts, and allows the center bar 37 to be fixed to the frame 21 with the center brackets 30, 30 standing upright.

The one side bar 38 is provided with fixing means 41, 41 composed of a pair of set bolts, and the side bar 38 can be fixed to the frame 21 in a state where the side brackets 31, 31 are erected.

The other side bar 39 is provided with fixing means 42, 42 composed of a pair of set bolts, and the side bar 39 can be fixed to the frame 21 with the side brackets 32, 32 standing upright.

In the case where the rollers 27, 28, 29 are worn out and need to be replaced with new rollers as a result of the roller apparatus being attached to the belt conveyor and used for a long period of time, according to the embodiment based on the above configuration. , Two methods are possible.

The first method is to change from the use state shown in FIG.
All of the three sets of side bars 38, 39,
The same applies hereinafter) is released, and the support bar 25 is set in a free state in which the support bar 25 is rotatable with respect to the frame 21. Then, as shown in FIG. 2 (B), when the support bar 25 is rotated on the frame 21 in the direction opposite to the stopper 35 (counterclockwise direction in the drawing), the brackets 30, 31, 32 of each set are generally prone. The roller 27,
28 and 29 are located below the trough bottom portion 1a of the trough-shaped conveyor belt. In the case of the illustrated example, the side edge 26a of the slit 26 of the support bar 25 is brought into contact with the stopper 35 below the frame 21, and the support bar 2
5 is fixed and held in a posture inclined in the prone direction. Therefore,
The support shaft 34 of each roller 27, 28, 29 may be removed from the groove 33 of the bracket and replaced with a new roller 27, 28, 29. When the necessary roller replacement is completed, the support bar 25 is rotated on the frame 21 so that the brackets 30, 31, 32 of each set stand, and the fixing means 40, 41 ,.
If the support bar 25 is fixed to the frame 21 by 42,
The rollers 27, 28 and 29 are arranged along the bottom surface of the belt, and the original use state as shown in FIG. 2 (A) is obtained.
As shown in FIG. 2, with respect to the traveling direction F of the belt,
If the stopper 35 is brought into contact with the support bar 25 so as to face the support bar 25, the support bar 25 can be supported at a predetermined position even if the fixing means 40, 41, 42 are loosened.

In the second method, the support bar 25 is rotated by the same method as the first method, and as shown in FIG. 2B, the brackets 30, 31 and 32 are substantially recumbent. , The support bar 25 is removed from the frame 21. That is, in the state of FIG. 2B, the support bar 25 is slidable in the axial direction of the frame 21,
At the end portion (left end in FIG. 1) of FIG. 1, it can be extracted through the passage space 36 shown in FIG. Therefore, the support bar 25 is moved from the lower side of the belt to a wide working space on the side, and the support shaft 34 of each roller 27, 28, 29 is pulled out from the groove 33 of the bracket there, and a new roller 27, 2 is formed.
It should be replaced with 8 and 29. When the necessary roller replacement is completed, the support bar 25 is externally inserted from the end of the frame 21 through the passage space 36 by the method reverse to the above, and the support bar 25 is slid on the frame 21 and set at a predetermined position. In this state, the support bar 25 is in a posture inclining in the prone direction as shown in FIG. 2 (B), and thereafter, the brackets 30, 31, 32 of each group are set by the same method as the first method. The support bar 25 may be rotated on the frame 21 so that the support bar 25 rises, and the support bar 25 may be fixed to the frame 21 by the fixing means 40, 41, 42.

It is needless to say that the present invention is not limited to the above-mentioned embodiment, and the support bar 25 may be integrally formed as a single state in which the unit bar is not divided. Also,
In the illustrated example, the center roller 27 and the pair of side rollers 2
Although a troughing idler for supporting the ascending belt with 8, 29 is shown, it can be implemented in general for any other roller device used in conjunction with a conveyor belt.

[0029]

According to the present invention as set forth in claim 1, in the state where the frame 21 is fixedly attached at a predetermined position,
Simply rotate the support bar 25 on the frame 21,
The rollers 27, 28, 29 can be moved to the lower side of the belt, and at a position where they do not interfere with the belt, the bracket 3
The rollers 27, 28, and 29 can be replaced and replaced from 0, 31, and 32. After the rollers are replaced, the support bar 25 may simply be returned to the original posture on the frame 21 and fixed by the fixing means 40, 41, 42. Therefore, unlike the prior art, there is no need for complicated work and heavy labor consisting of multiple steps for roller replacement, and there is an effect that labor can be saved and speeded up. In particular, in claim 1.
According to the present invention described, the following remarkable effects can be obtained.
It (1) Use the brackets 30, 31, and 32 in a standing posture.
At the time of use, the stopper 35 moves the belt in the traveling direction F.
Abutting against one side edge of the slit 26 from a direction facing the
Therefore, even if the fixing means 40, 41, 42 are loosened,
The support bar 25 does not rotate. (2) The brackets 30, 31, and 32 are in the prone posture.
When replacing the roller, the stopper 35
Abuts the other side edge 26a and holds the support bar 5 in that position
Therefore, the roller replacement work is easy. (3) Simply slip the mechanism as described in (1) and (2) above.
It is achieved by a simple structure of the stopper 26 and the stopper 35.
Therefore, the structure can be simplified and the device can be provided at low cost.
It

According to the second aspect of the present invention, in addition to the rotating action, the support bar 25 can be pulled out from the frame 21 while the frame 21 remains attached and fixed at a predetermined position. Therefore, it is possible to replace and replace the rollers in a wide working space on the side of the belt, and there is an effect that it is remarkably excellent in labor saving and speeding up of work as compared with the conventional one.

According to the present invention as set forth in claim 3, by dividing the support bar 25, a plurality of unit bars 37, 3 are provided.
8 and 39, when the rollers are replaced and replaced by the rotating work as described in the invention of claim 1, the unit bar provided with the rollers that need not be replaced remains to be replaced. By rotating only the unit bar provided with the roller, the required roller replacement work can be performed, so there is an effect that labor saving and speedup of the work can be further improved.

According to the present invention as defined in claim 3,
Even when the rollers are replaced and replaced by the extracting work as described in the invention of claim 2, it is not necessary to remove the support bar 25 which constitutes a heavy object as a whole, and it is necessary to remove each of the unit bars 37, 38 and 39. Since it can be taken out and attached, workability can be improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a front view of the entire apparatus, (B) is a sectional view of a B section, (C) is a sectional view of the C section, (D). [Fig. 6] is a sectional view taken along the arrow D.

2A and 2B are cross-sectional views taken along the line EE of FIG. 1A, in which FIG. 2A is a cross-sectional view showing a usage state and FIG. 2B is a cross-sectional view showing a state during roller replacement work.

FIG. 3 shows a conventional example, (A) is a front view showing a usage state, and (B) is a front view showing a state during roller replacement work.

[Explanation of symbols]

 1 Belt 1a Trough Bottom 21 Frame 22 Seat Member 23 Mounting Piece 25 Support Bar 26 Slit 26a Side Edge 27 Center Roller 28 Side Roller 29 Side Roller 30 Center Bracket 31 Side Bracket 32 Side Bracket 33 Groove 34 Spindle 35 Stopper 36 Passing Space 37 Center bar 38 Side bar 39 Side bar 40 Fixing means 41 Fixing means 42 Fixing means

Claims (3)

[Claims] 1. An apparatus comprising a roller movably supported by a bracket erected on a support bar and detachably supported by a conveyor belt.
To the frame fixed in the direction to traverse
The support bar is externally inserted so as to be rotatable around the axis of the frame.
At the same time, the support bar is fixed to the frame in a non-rotatable manner.
Made by providing a constant means, both side edges of the notch forming the slits in the peripheral side portion of the support bar
The bracket so that the bracket is in an upright position.
When the holding bar is turned in the direction of belt travel
While supporting one side edge of the slit, the bracket
The support bar so that the
The other side edge of the slit when rotated opposite to each other
A roller device for a conveyor belt, characterized in that a stopper for abuttingly supporting the roller is fixed to a frame . 2. An apparatus comprising a bracket erected on a support bar and a roller removably supported on the bracket, wherein a frame is attached and fixed in a direction traversing a conveyor belt, and the support bar is attached to the frame. A roller device for a conveyor belt, wherein the roller device for a conveyor belt is mounted so as to be rotatable and fixed about the axis of and movable and fixed in the axial direction of the frame. 3. An apparatus in which rollers are detachably supported by a plurality of brackets set upright on a support bar, and the support bar is divided into a plurality of unit bars corresponding to the rollers. Conveyor characterized in that each unit bar is attached to a frame which is fixedly mounted in a direction traversing a conveyor belt so as to be rotatable and fixed about the axis of the frame and movable and fixed in the axial direction of the frame. Belt roller device.