JPH0732486Y2 - Idle roller support device for belt conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention provides an idle roller that prevents the conveyor section from hanging down by touching the lower surface of the conveyor section on which the object to be conveyed is placed. Supporting device.

Conventionally, as an idle roller supporting device in a belt conveyor, conventionally, on a side surface of a pillar standing on a base body arranged below a conveyor of a belt conveyor, a notch groove opening to an upper surface of the pillar is formed, A structure has been used in which a shaft portion which is relatively rotatably protruded from both ends of the idle roller via a bearing is fitted into the notch groove.

Problems to be Solved by the Invention When the object to be conveyed conveyed by the belt conveyor is such as dust that scatters dust around, the bearing of the idle roller is easily damaged by the dust. It is necessary to replace the rollers frequently.

In the conventional supporting device, since the notch groove into which the shaft portion of the idle roller is fitted is formed on the upper surface of the support column, when the idle roller is removed from the support column, the idle roller is lifted upward and the idle roller is also removed. When the idle roller is mounted on the support column, the idle roller is lowered from above, and when the idle roller is replaced, the conveyor section of the belt conveyor must be lifted up.

However, in a state where the transported object remains on the belt conveyor, not only a great amount of labor is required to lift the transport unit, but also the transported object may fall when the transport unit is lifted, It was necessary to idle the belt conveyor until the transported object was not placed on the surface. Further, at the start end of the belt conveyor, a rubber strip is attached between the skirt board for preventing the transported objects such as earth and sand dropped at the start end from scattering and the upper surface of the transfer section of the belt conveyor. In this case, since the conveying portion is strongly pressed against the idle roller by the rubber strip, it is necessary to keep the conveying portion liftable by removing the rubber strip.

As described above, the conventional supporting device has a drawback that it requires time-consuming operation of the belt conveyor and attachment / detachment of the rubber strip, which is troublesome and that the interruption time of the conveyance due to the replacement of the idle roller becomes long.

Means for Solving the Problems As means for solving the above problems, the first invention is
A pair of stanchions are erected on the base arranged below the conveyor on which the object to be conveyed of the belt conveyor is placed, and on both stanchions,
The notch groove that fits the shaft part that relatively freely rotates from both ends of the idle roller that touches the lower surface of the carrier part through the bearings is placed sideways so that the shaft part can be removed in parallel with the carrier part. To form a mounting cylinder portion with an open upper surface at a position lower than the notch groove of the column, and in the mounting cylinder portion,
The retaining body for closing the opening of the notch groove is configured so that it can be detached upward by inserting a protrusion formed on the lower surface of the retaining body, and a second invention is a conveyed object of a belt conveyor. A pair of support columns is erected on the base body arranged below the transfer section on which is mounted, and one support column is freely rotatable relative to the lower surface of the transfer section via bearings from both ends of an idle roller. A notch groove into which one of the protruding shaft parts fits is formed by opening it laterally so that the one shaft part can be detached substantially parallel to the transport part, and below the notch groove of one of the columns. Form a mounting cylinder with an open top at the position,
A retaining body that closes the opening of the cutout groove is attached to the mounting cylinder portion so that it can be removed upward by fitting a protrusion formed on the lower surface of the removal prevention body, and the other strut faces the notch groove. Between the posture in which the other shaft portion of the idle roller fits the one shaft portion in the notch groove and the posture in which the other shaft portion is detached from the notch groove. A structure in which the idle roller is fitted in such a manner that it can be swung in a direction substantially parallel to the transport section and can be removed from its supporting hole by axial movement of the idle roller when one shaft section is removed from the notch groove. did.

Advantageous Effects and Effects of the Invention According to the first invention, when the idle roller is attached, the idle roller is moved in parallel with the conveying portion of the belt conveyor so that the shaft portions are fitted in the notch grooves of the support columns. After that, the protrusions of the retaining bodies are fitted into the mounting cylinders of both columns to close the openings of the cutout grooves with the retaining bodies.
This prevents the shaft from coming off the notch,
The idle roller is supported in a predetermined posture.

When removing the idle roller, contrary to the above, the tourism of the notch groove is opened by moving both stoppers upward and detaching from the mounting cylinder part, and the idle roller is connected to the conveyor part of the belt conveyor. By moving in parallel, both shaft parts are removed from the notch groove.

It should be noted that the size of the retaining body may be set to the minimum dimension required to close the opening of the notch groove, and thus, even when the outer diameter of the idle roller is relatively small, it can be attached to and detached from the mounting cylinder portion. Therefore, it is possible to avoid that the stopper body moved up and down interferes with the lower surface of the conveyor section of the belt conveyor.

As described above, in the first device, the idle roller is attached and detached by moving the idle roller in parallel with the conveyor section of the belt conveyor. Therefore, the conveyor section is lifted when the idle roller is replaced. No need.

Further, according to the second invention, when the idle roller is attached, the idle roller is slanted with respect to a predetermined supporting posture, the other shaft portion is inserted into the support hole and fitted, and the support hole is substantially removed. By pivoting the idle roller about the center substantially parallel to the conveyor of the belt conveyor, one shaft is fitted in the notch groove. After that, the projection of the retaining body is fitted into the mounting cylinder to close the opening of the notch groove with the retaining body. As a result, the one shaft portion is prevented from coming off the notch groove, and the idle roller is supported in a predetermined posture.

When removing the idle roller, conversely to the above, the notch groove is opened by opening the notch groove by moving the retaining member upward and removing it from the mounting cylinder part. One of the shafts is removed, and the idler roller in an oblique posture is moved in the axial direction so that the other shaft is pulled out from the support hole.

As described above, in the second device, the idle roller is attached and detached by swinging the idle roller substantially parallel to the conveyor of the belt conveyor and moving the idle roller in the axial direction. There is no need to lift the transport section when replacing the rollers.

As described above, according to the first and second aspects, the idle roller can be replaced without lifting the conveyor section of the belt conveyor, so that even if the object to be conveyed remains on the conveyor section. Of course, since the rubber strip attached to the starting end of the belt conveyor does not have to be removed, there is an advantage that the idle operation of the belt conveyor and the labor of attaching and detaching the rubber strip can be saved. Further, since the labor of idling the belt conveyor and the labor of attaching and detaching the rubber strip are not required, there is an effect that the interruption of the transportation due to the replacement of the idle roller can be suppressed to the shortest time.

Embodiment An embodiment of the first invention will be described below with reference to FIGS. 1 to 4.

The belt conveyor 1 is made up of an endless belt 2 hung between pulleys (not shown), and is adapted to carry an object (not shown) on a conveyor 3 that moves in the horizontal direction. ing.

Between the transport unit 3 and the return unit 4 that moves in the opposite direction below the transport unit 3, a plurality of base bodies 5 made of slender angle members in a direction perpendicular to the transport direction are provided in a predetermined direction in the traveling direction of the transport unit 3. They are arranged at positions spaced apart from each other, and are fixed in a state of being horizontally extended between side frames 6 provided along both sides of the transport section 3.

Each of the bases 5 has two struts 8 and 8 standing upright in the center thereof, and two struts higher than the two stanchions 8 and 8 in the left and right ends. 9 and 9 are erected. Adjacent ones of these columns 8 and 9 are paired with each other, and support the idle roller 10 that touches the lower surface of the conveyor unit 3 of the belt conveyor 1 to prevent its hanging. I'm running. The idle roller 10 supported between the two center columns 8 has its axis oriented horizontally, and the idle roller 10 supported between the center column 8 and the columns 9 on both the left and right sides has its axis inclined. In this way, the conveyor 3 of the belt conveyor 1 travels in a state in which the central portion of the conveyor 3 is recessed from the left and right side portions when the conveyed object is placed.

Further, as shown in FIG. 1, at the starting end of the belt conveyor 1, skirt boards 11 and 11 are provided above the left and right ends of the conveying section 3 and the skirt boards 11 and 11 are provided. Rubber strips 12, 12 are mounted in the gap between the lower edge and the upper surface of the transport unit 3.

Next, the idle roller 10 with the two center columns 8 and 8
The support structure of will be described.

The idle roller 10 has a pair of ring-shaped bearings 13, 13 fitted in the openings at both ends of the ring portion 14 to form the bearings 13,
It has a structure in which the shaft portion 15 fitted in 13 is projected from both end surfaces of the branch portion 14, and the tip end portion of each shaft portion 15 is a flat surface 16 parallel to the outer periphery by partially cutting, 16 form the shape.

On the other hand, at the upper end positions of the supporting surfaces 17, 17 of the two columns 8 corresponding to each other, the front surface 18 forming a right angle with the supporting surface 17, respectively.
A notched groove 20 that opens to the inside is formed, and the lateral width of this notched groove 20, that is, the depth from the front surface 18 is equal to the outer diameter of the shaft portion 15 of the idle roller 10.

Further, on the front surface 18 of each of the columns 8, there is provided a mounting cylinder portion 21 whose upper surface is open with its axis oriented in the vertical direction and whose upper surface is positioned slightly below the lower edge of the opening of the cutout groove 20. It is fixed by welding. The height of the mounting cylinder 21 is notched groove.
Block-shaped stopper 23 slightly larger than the opening size of 20
However, it is adapted to be mounted by fitting a protrusion 24 protruding from the lower surface thereof into the mounting cylinder portion 21. When the retaining body 23 is attached to the mounting cylinder portion 21, the retaining body is
23 is in close contact with the front surface 18 of the column 8 and closes the opening of the notch groove 20. The dimension from the upper surface of the retaining member 23 to the lower end surface of the protrusion 24 is smaller than the distance between the upper end portion of the mounting tube portion 21 and the lower surface of the conveying portion 3 of the belt conveyor 1.

The support device of this embodiment has the above-mentioned configuration, and the procedure for attaching and detaching the idle roller 10 will be described below.

When attaching the idle roller 10, both stoppers 23, 23
With the idle cylinder 10 removed from the mounting cylinders 21, 21
Is horizontally moved in parallel with the transport unit 3 so as to be inserted between the columns 8 while keeping the horizontal orientation of the belt conveyor 1 at right angles to the traveling direction of the transport unit 3. As a result, the shaft portions 15, 15 of the idle roller 10 are non-rotatably fitted into the notch grooves 20, 20 from the front surface 18 side with the flat surface 16 thereof being horizontal. After that, when the retaining body 23 is attached to the mounting cylinder portion 21 to close the opening of the notch groove 20, both shaft portions 15 and 15 are held immovably in the horizontal direction.
The idle roller 10 is supported in a predetermined posture perpendicular to the traveling direction of the conveyor 3 of the belt conveyor 1.

In addition, when removing the idle roller 10, both stoppers 2
The openings of the notch grooves 20 and 20 are opened by lifting 3 and 23 and removing them from the mounting cylinder portions 21 and 21. Then, by horizontally moving the idle roller 10 in parallel with the conveying unit 3 of the belt conveyor 1 so as to pull it out from between the support columns 8 and 8, the shaft portions 15 and 15 can be detached from the notch grooves 20 and 20. Good.

Since the vertical dimension of the retaining body 23 is smaller than the distance between the transporting section 3 of the belt conveyor 1 and the mounting tube section 21, the retaining body 23 of the transporting section 3 is attached and detached to and from the mounting tube section 23. It does not interfere with the bottom surface.

As described above, when the idle roller 10 is attached and detached, the moving direction of the idle roller 10 is not in the vertical direction but in the horizontal direction parallel to the transport unit 3 of the belt conveyor 1. Therefore, it is not necessary to lift the transport unit 3 when the idle roller 10 is attached or detached, and the idle roller can be used even when the transported object is placed on the belt conveyor 1.
It is possible to easily perform the attachment and detachment work of 10.

The support structure of the idle roller 10 by the center pillar 8 and the pillars 9 at both ends is such that one shaft portion 63a of the idle roller 10 is provided in a support hole 62 formed in a surface of the pillar 8 corresponding to the pillar 9.
Is fitted so that the idle roller 10 can swing in an inclined plane parallel to the conveyor section 3 of the belt conveyor 1, and the notch support section 64 formed on the surface of the column 9 corresponding to the column 8.
Then, the other shaft portion 63b of the idle roller 10 is detachably fitted by swinging the idle roller 10, and a box-shaped retaining member 65 is attached to the column 9 and opened at its lower edge. Ditch 66
By fitting the shaft portion 63b to the shaft portion 63b, the shaft portion 63b is prevented from being removed and the idle roller 10 is supported in a predetermined posture. Then, remove the idle roller 10 from the stopper 65.
And the idle roller 10 is swung to disengage the other shaft portion 63b from the notch support portion 64 of the support column 9, and the idle roller 10 in an oblique posture is moved in the axial direction to move one shaft portion. This is performed by removing 63a from the support hole 62 of the column 8.

In the present embodiment, an example in which the first invention is applied to the support structure of the central idle roller 10 has been described, but the first invention uses the columns 8 and 9 to support the idle rollers 10 on both sides.
It can also be applied to the case of supporting.
Even in this case, when the idle roller 10 is attached or detached, it is only necessary to move the idle roller 10 in parallel with the conveyor section 3 of the belt conveyor 1, and therefore it is not necessary to remove the rubber strip 12 and lift the conveyor section 3.

Next, an embodiment of the second invention will be described with reference to FIGS. 5 and 6.

Two columns 38a, 3 which are erected at a position near the center of the base 35
A notch groove 50 into which one shaft portion 45a of the idle roller 40 is fitted is formed on one of the columns 38a of 8b so as to open at the front surface 48 of the column 38a, and the opening of the notch groove 50 is formed. A mounting cylinder portion 51 for mounting a retaining body 53 that closes is secured.

The other support column 38b has a support hole 52 whose lateral dimension is slightly larger than the outer diameter dimension of the other shaft portion 45b of the idle roller 40.
Is formed so as to face the notch groove 50 of the one pillar 38a. When the other shaft portion 45b of the idle roller 40 is fitted in the support hole 52, the idle roller 40 is parallel to the conveyor portion of the belt conveyor (not shown in FIGS. 5 and 6). One of the shaft parts 45a in the horizontal plane
Is fitted into the cutout groove 50 so as to form a neck between a support posture which is perpendicular to the traveling direction of the transport section and a posture where one shaft portion 45a is detached from the cutout groove 50 and is oblique to the support posture. You can pretend. Further, by moving the idle roller 40 in the axial direction in a state of being inclined with respect to a predetermined supporting posture, the other shaft portion 45b can be fitted into the supporting hole 52 and can be pulled out from the supporting hole 52. ing.

The supporting device of the present embodiment has the above-mentioned configuration, and the idle roller
40 is mounted by moving the idle roller 40 obliquely with respect to the supporting posture and moving it in the axial direction.
By fitting b into the support hole 52, and swinging the idle roller 40 about the support hole 52 in parallel with the conveyance section of the belt conveyor, one shaft portion 45a is fitted into the notch groove 50, After that, the stopper body 53 is attached to the mounting cylinder portion 51 to close the opening of the cutout groove 50 to prevent the shaft portion 45a from being removed, and the idle roller 40 is moved to a predetermined direction perpendicular to the traveling direction of the conveying portion. The procedure is to hold the robot in the supporting posture.

The idle roller 40 was removed by removing the retaining member 53 and swinging the idle roller 40 to remove one shaft portion 45a from the cutout groove 50, and swinging the idle roller 40 obliquely with respect to a predetermined supporting posture. The procedure is performed by moving the idle roller 40 in the axial direction to remove the other shaft portion 45b from the support hole 52.

As described above, when the idle roller 40 is attached and detached, the idle roller 40 is not moved in the vertical direction, so that it is not necessary to lift the conveyor section of the belt conveyor.

In the present embodiment, an example in which the second invention is applied to the support structure for the central idle roller 40 has been described.
The invention can be applied to the case of supporting the idle rollers 60 on both sides.

[Brief description of drawings]

The attached drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway front view of an embodiment of the first invention, FIG. 2 is a partially enlarged perspective view, and FIG. 3 is a partially cutaway enlarged sectional view. FIG. 4 is a partial plan view, and FIGS. 5 and 6 are partial plan views showing an attaching / detaching procedure of the idle roller in the embodiment of the second invention. 1: Belt conveyor, 3: Conveyor, 5, 35: Substrate, 8, 38a,
38b: prop, 10, 40, 60: idle roller, 13: bearing, 15, 45a, 45b: shaft part, 20, 50: notch groove, 21, 51: mounting cylinder part, 23, 53: retaining body, 24: Projection, 52: Support hole

Claims (2)

[Scope of utility model registration request] 1. A pair of support pillars are provided upright on a base body arranged below a transfer portion on which a conveyed object of a belt conveyer is placed, and both support pillars are idle rollers that are swayed by the lower surface of the transfer portion. A notch groove into which a shaft portion that relatively rotatably projects from both ends of the shaft through a bearing is fitted is formed by opening the shaft portion laterally so that the shaft portion can be removed in parallel with the conveying portion. A mounting cylinder portion having an open upper surface is formed at a position lower than the notch groove, and a retaining member for closing the opening of the notch groove is fitted into the mounting cylinder portion, and a protrusion formed on the lower surface of the retaining body is fitted therein. The idle roller supporting device of the belt conveyor, which is detachably mounted upward by being 2. A pair of pillars is provided upright on a base body arranged below a conveyor section on which a conveyed object of a belt conveyor is placed, and one of the pillars is an idler which is swayed by the lower surface of the conveyor section. A notch groove, into which one of the shaft portions protruding from both ends of the roller via bearings to rotate relative to each other is fitted, is opened laterally so that the one shaft portion can be detached substantially in parallel with the conveying portion. And a retaining member for closing the opening of the notch groove in the attaching cylinder part, the mounting cylinder part having an open upper surface is formed at a position lower than the notch groove of the one of the columns. The protrusion formed on the lower surface of the is fitted so as to be able to be pulled out upward, and a supporting hole facing the cutout groove is formed in the other pillar, and the supporting hole of the other side of the idle roller is formed in the supporting hole. The shaft portion is formed by the idle roller and the one shaft portion is formed by the cutout groove. The idle in a state in which the one shaft portion is detached from the notch groove so that it can be swung in a direction substantially parallel to the transport portion between a posture for fitting and a posture for detaching from the notch groove. An idle roller supporting device for a belt conveyor, characterized in that the roller is fitted so that it can be removed from the supporting hole by moving the roller in the axial direction.