JP2005194067A - Roller replacing tool for belt conveyor and roller replacing method using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller replacing tool for a belt conveyor and roller replacing method using it capable of performing the replacing operation for tilt rollers without causing the operator to intrude in between an upper and a lower conveyor belt. <P>SOLUTION: The belt conveyor is structure so that the tilt rollers 11 and 12 in a pair on the left and right are rotatably supported through the respective pairs of inner bearing brackets 14 and 15 and outer bearing brackets 16 and 17 installed upright on a supporting member 13, and the roller replacing tool 10 for the belt conveyor is to replace the tilt rollers 11 and 12, wherein the arrangement further includes a sliding member 18 movable being guided along the supporting member 13 and a roller receiving member 19 installed upright on the sliding member 18 as capable of revolving and supporting the lower parts of the tilt rollers 11 and 12 while its section assumes a circular arc. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a roller replacement jig for a belt conveyor used when replacing a roller that supports a conveyor belt of a trough type belt conveyor that conveys a granular material or a lump, and a roller replacement method using the same.

2. Description of the Related Art Conventionally, trough-type material conveying belt conveyors for conveying granular materials or massive materials are used in blast furnaces and the like of steelworks. In the work to replace the inclined rollers that support the conveyor belt of the conveyor belt for raw material conveyance, a cradle is placed on the main frame of the belt conveyor, and a lifting gantry is attached to a shaft that is rotatably passed over the cradle. A method is known in which a conveyor belt is lifted higher than an inclined roller by rotating a lifting platform by a handle attached to a shaft, and an operator enters under the raised conveyor belt (for example, Patent Document 1). reference).
As another method, a belt lifting jig is installed in the main frame of the belt conveyor across the conveyor belt, a chain block is attached to the belt lifting jig, and the conveyor belt is lifted higher than the inclined roller by the chain block and lifted. A method in which an operator enters under the belt is known.

JP-A-8-67320 (FIGS. 1 to 3)

However, in the operation of replacing the conventional inclined roller, there are still the following problems to be solved.
An operator enters under the conveyor belt raised above the tilt roller, removes it from the bearing section of the bearing bracket while supporting the old tilt roller by hand, and aligns the new tilt roller passed by the worker outside the main frame. (Centering) and fitting (attaching) to the bearing part of the bearing bracket is required, but the operator must work in a narrow space between the upper and lower conveyor belts. It is difficult to hold a tilting roller weighing about 20kg per bottle. The tilting roller or conveyor belt is damaged by dropping the tilting roller in the middle of the work. There was a risk of pinching fingers in between.

The present invention has been made in view of such circumstances, and a roller replacement jig for a belt conveyor capable of replacing an inclined roller without allowing an operator to enter between the upper and lower conveyor belts, and a roller replacement method using the same The purpose is to provide.

The roller replacement jig for the belt conveyor according to claim 1, wherein the pair of inclined rollers arranged horizontally are provided horizontally in the width direction of the belt conveyor immediately below the inclined rollers. A belt conveyor roller replacement jig for use in replacing the inclined roller of the belt conveyor that is rotatably supported via each of the paired inner bearing bracket and outer bearing bracket.
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket;
A roller receiving member that is slidably mounted on the slide member, has a circular arc cross section, and supports a lower portion of the inclined roller.

The roller replacement jig for the belt conveyor according to claim 2, wherein the roller replacement jig for the belt conveyor according to claim 1 is a cylindrical fixing portion provided on the slide member at the bottom of the roller receiving member. A rod-like swivel member is provided on the upper side of the fixed member and the lower part is inserted on the upper end surface of the fixed part.
A roller replacement jig for a belt conveyor according to a third aspect of the present invention is the roller replacement jig for the belt conveyor according to a second aspect, in which a handle is provided in any one of the slide material and the fixing portion.
The roller replacement jig for the belt conveyor according to claim 4 is the roller replacement jig for the belt conveyor according to claim 2 and 3, wherein the swivel member includes a screw portion in which a male screw is formed on a lower side, and the screw portion. And a nut portion screwed onto the male screw.

The roller replacement jig for the belt conveyor according to claim 5 is the roller replacement jig for the belt conveyor according to claims 1 to 4, wherein the inner shaft portion of the inclined roller is moved to the inner side at a forward limit position of the slide material. Above the bearing part of the bearing bracket, on the other hand, the height of the roller receiving member and the inclination angle with respect to the horizontal are set so that the outer shaft part of the inclined roller is fitted to the bearing part of the outer bearing bracket In addition, the front end portion of the slide material is provided with a meshing portion that meshes with the inner bearing bracket at the forward limit position of the slide material.

The roller replacement method using the roller replacement jig of the belt conveyor according to claim 6, wherein the pair of inclined rollers arranged on the left and right sides are provided horizontally in the width direction of the belt conveyor immediately below the inclined rollers. A method of replacing the inclined rollers of a belt conveyor rotatably supported via a pair of inner bearing brackets and outer bearing brackets erected on a support member,
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket, and is slidably erected on the slide member. Using a roller replacement jig of a belt conveyor having a roller receiving member that supports the lower part of the inclined roller,
(1) a jig placement step of placing a roller replacement jig of the belt conveyor on the support member via the slide material;
(2) A roller replacement jig of the belt conveyor is pushed inward along the support member, whereby the inner shaft portion and the outer shaft portion of the old inclined roller are respectively inserted into the inner bearing bracket via the roller receiving member. A roller lifting step of lifting above the bearing portion of the outer bearing bracket and the bearing portion of the outer bearing bracket,
(3) a roller removing step of turning the roller receiving member and removing the old inclined roller from the roller receiving member;
(4) a roller taking-in step of placing the new inclined roller on the roller receiving member;
(5) A centering step of turning the roller receiving member to align the inner shaft portion and the outer shaft portion of the new inclined roller with the bearing portions of the inner bearing bracket and the outer bearing bracket;
(6) Pulling out the roller replacement jig of the belt conveyor to the outside along the support member, the new inclined roller is lowered, and the inner shaft portion and the outer shaft portion of the new inclined roller are respectively connected to the inner bearing. A roller mounting step for inserting into the bearing portion of the bracket and the bearing portion of the outer bearing bracket;
(7) A jig removing step of removing the roller replacement jig of the belt conveyor from the support member.

The roller replacement method using the roller replacement jig of the belt conveyor according to claim 7, wherein the pair of inclined rollers arranged on the left and right are provided horizontally in the width direction of the belt conveyor immediately below the inclined rollers. A method of replacing the inclined rollers of a belt conveyor rotatably supported via a pair of inner bearing brackets and outer bearing brackets erected on a support member,
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket, and is slidably erected on the slide member. Using a roller replacement jig of a belt conveyor having a roller receiving member that supports the lower part of the inclined roller,
(1) a jig placement step of placing a roller replacement jig of the belt conveyor on the support member via the slide material;
(2) By pushing the roller replacement jig of the belt conveyor inward along the support member, the inner shaft portion of the old inclined roller is placed above the bearing portion of the inner bearing bracket via the roller receiving member. On the other hand, an inner shaft removing step of lifting the outer shaft portion of the old inclined roller to the upper end portion of the bearing portion of the outer bearing bracket;
(3) Removing the outer shaft portion of the old inclined roller from the bearing portion of the outer bearing bracket, turning the roller receiving member, and removing the outer shaft portion that supports the barrel portion of the old inclined roller by the roller receiving member. Process,
(4) A roller removing step of further rotating the roller receiving member and removing the old inclined roller from the roller receiving member;
(5) a roller taking-in step of placing the new inclined roller on the roller receiving member;
(6) Rotating the roller receiving member, aligning the inner shaft and outer shaft of the new inclined roller with the inner bearing bracket and outer bearing bracket, and aligning the outer shaft of the new inclined roller with the outer An outer shaft insertion step for inserting into the bearing portion of the bearing bracket;
(7) Pulling out the roller replacement jig of the belt conveyor to the outside along the support member to lower the roller receiving member and insert a new inner shaft portion of the inclined roller into the bearing portion of the inner bearing bracket An inner shaft inserting step,
(8) A jig removing step of removing the roller replacement jig of the belt conveyor from the support member.

The roller replacement jig of the belt conveyor according to claims 1 to 5 is a slide member that is guided and moved along the support member, and is slidably installed on the slide member, and has a circular arc shape in cross section. And a roller receiving member that supports the lower part of the inclined roller, so that the inclined roller is moved up and down by moving the roller receiving member along the supporting member via the slide material, and both ends of the inclined roller. Can be removed from or attached to the bearing portion of the inner bearing bracket and the bearing portion of the outer bearing bracket, and by rotating the roller receiving member, the direction of the roller receiving member is changed and the inclined roller is taken out or taken in from the roller receiving member. This makes it easier for the operator to move between the inclined rollers without getting between the upper and lower conveyor belts. Work can be easily replacement.

In particular, in the roller replacement jig for the belt conveyor according to claim 2, the swivel member placed on the upper end surface of the fixed portion provided on the slide member is provided at the bottom of the roller receiver member. The member turning mechanism can be made compact.
In the roller replacement jig for the belt conveyor according to claim 3, since the handle is provided in any one of the slide member and the fixed portion fixed to the slide member, an operator located outside holds the handle. The jig can be pushed inward and the jig can be pulled out, thereby improving workability.
In the roller replacement jig for the belt conveyor according to claim 4, the swivel member includes a screw portion in which a male screw is formed and a nut portion that is screwed to the male screw. Therefore, the length of the swivel member is adjusted. The height of the roller receiving member can be adjusted. As a result, the setting on the support member is facilitated, and the roller receiving member can be replaced with another belt conveyor, which is excellent in versatility.

In the roller replacement jig of the belt conveyor according to claim 5, the inner shaft portion of the inclined roller is located above the bearing portion of the inner bearing bracket, while the outer shaft portion of the inclined roller is at the forward limit position of the slide material. Since the height of the roller receiving member and the inclination angle with respect to the horizontal are set so as to be fitted to the bearing portion of the outer bearing bracket, the lifting height of the conveyor belt above the inclination roller can be reduced. . In addition, since the slide member has a meshing portion that meshes with the inner bearing bracket at the forward limit position of the slide material, the slide material is generated when the roller receiving member turns or when the inclined roller is taken out or taken in. Since the posture of the jig can be stably held by the meshing portion with respect to the load acting on the jig, a safe replacement operation can be performed and the replacement time can be shortened.

In the roller replacement method using the roller replacement jig of the belt conveyor according to claim 6, the inner shaft portion and the outer shaft portion of the inclined roller are respectively connected to the bearing portion of the inner bearing bracket via the rotating roller receiving member, Since it can be lifted upward from the bearing portion of the outer bearing bracket, or conversely, can be lowered from above the bearing portion of the inner bearing bracket and the bearing portion of the outer bearing bracket, the replacement work can be simplified.

In the roller replacement method using the roller replacement jig of the belt conveyor according to claim 7, in a state where the outer shaft portion of the inclined roller is fitted to the bearing portion of the outer bearing bracket via the rotating roller receiving member, Raise the inner shaft part above the bearing part of the inner bearing bracket, or conversely, with the outer shaft part of the inclined roller fitted to the bearing part of the outer bearing bracket, Since it can descend from above, the height of the lifted conveyor belt can be lowered, the lifting work of the conveyor belt can be simplified, and the generation of excessive force on the conveyor belt can be suppressed. The life of the conveyor belt is prolonged.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIGS. 1A and 1B show a state where the roller replacement jig of the belt conveyor according to the first embodiment of the present invention is placed on the support member, and the state where the roller replacement jig is pushed into the forward limit position, respectively. 2 is a sectional view of the belt conveyor, FIG. 2 is a perspective view of a roller replacement jig of the belt conveyor, FIG. 3 is an AA sectional view of FIG. 1B, and FIG. 4 is an arrow of FIG. FIG. 5 is a perspective view of a roller replacement jig for a belt conveyor according to the second embodiment of the present invention, and FIG. 6 is a roller replacement for the belt conveyor according to the third embodiment of the present invention. It is a partially cutaway front view of a jig.

As shown in FIGS. 1 (A) and 1 (B), a roller replacement jig (hereinafter also simply referred to as a roller replacement jig) 10 of the belt conveyor according to the first embodiment of the present invention is The pair of inclined rollers 11, 12 arranged in a pair are the inner bearing brackets 14, 15, which are each paired upright on a support member 13 provided horizontally in the width direction at a position directly below the inclined rollers 11, 12. And a jig used when the inclined rollers 11 and 12 of the belt conveyor rotatably supported via the outer bearing brackets 16 and 17 are replaced. In addition, since the inclination rollers 11 and 12 are comprised arbitrarily, only the inclination roller 12 is demonstrated hereafter.

As shown in FIGS. 1A, 1 </ b> B, 2, and 4, the roller replacement jig 10 is guided and moved along the support member 13 between the inner bearing bracket 15 and the outer bearing bracket 17. The slide member 18 is configured so as to be able to turn on the slide member 18 and has a roller receiving member 19 that supports the lower portion of the inclined roller 12 in a circular arc shape. These will be described in detail below.

As shown in FIGS. 1A, 1B and 4, the support member 13 provided horizontally in the direction (belt width direction) orthogonal to the conveying direction of the belt conveyor is made of an angle material having an L-shaped cross section. The side plates 20 and 21 having the same width and facing each other at an inclination angle α (= 45 °) are orthogonal (vertical angle β = 90 °).
As shown in FIGS. 2 and 4, the slide member 18 has a pair of abutting sliding plates 24, 25 that abut against the upper surfaces of the side plates 20, 21 of the support member 13 at intervals K in the belt width direction. Open up and ready. The abutting sliding plates 24 and 25 are made of one side plate of a short length N angle material, and the other side plates 26 and 27 and the upper end portions of the abutting sliding plates 24 and 25 are horizontally arranged in the upper part. It is fixed to the back surface 29 of the arranged mounting plate 28. The angle member composed of the abutting sliding plate 24 (25) and the side plate 26 (27) is opposed to the mounting plate 28 with the same width as the angle member composed of the side plates 20 and 21 of the support member 13 and facing the same. It is arranged with α.

As shown in FIGS. 1A, 1 </ b> B, and 3, the inner bearing bracket 15 (same for 14) is formed in a U-shaped cross section, and a horizontal roller 30 disposed between the inclined rollers 11, 12. The bearing plate 32 is rotatably supported via the shaft portion 31, and the side plates 33 and 34 are provided so as to be orthogonal to both end portions of the bearing plate 32. A bearing plate 36 that supports the inner shaft portion 35 of the inclined roller 12 is fixed to the side plates 33 and 34 at an upper portion on the outer side in the belt width direction of the inner bearing bracket 15 so as to be orthogonal to the axial direction of the inclined roller 12.

As shown in FIGS. 1A and 1B, the outer bearing bracket 17 (same for 16) is also formed in a U-shaped cross section like the inner bearing bracket 15. The bearing plate 38 which supports 37, and the side plates 39 and 40 which stood up orthogonally to the both ends of the bearing plate 38 are provided. The inner shaft portion 35 and the outer shaft portion 37 have an outer diameter d (for example, 20 to 30 mm), and are inclined at the upper end portions of the bearing plate 36 of the inner bearing bracket 15 and the bearing plate 38 of the outer bearing bracket 17, respectively. A notch (not shown) in which the inner shaft portion 35 and the outer shaft portion 37 of the roller 12 are fitted (attached) is formed. Further, the upper part of the bearing plate 38 of the outer bearing bracket 17 is disposed to be inclined so as to be orthogonal to the axial direction of the inclined roller 12.

As shown in FIGS. 1B, 2, and 3, the front side of the side plates 33 and 34 of the inner bearing bracket 15 is located at the front end of the mounting plate 28 of the slide member 18 at the forward limit position of the slide member 18. Slit-like notches 41 and 42 that are examples of meshing portions that mesh with each other are formed. The front ends of the notches 41 and 42 are gradually widened so that the front ends of the side plates 33 and 34 in the belt width direction can be easily inserted.

As shown in FIGS. 1 (A), 1 (B), 2 and 4, a cylindrical fixing portion 43 is provided on the mounting plate 28 of the slide member 18 at the center position in the width direction of the mounting plate 28, that is, At the center position in the width direction of the support member 13, the mounting plate 28 is erected on the outside in the length direction, that is, on the outer bearing bracket 17 side. A handle 44 formed by bending a steel bar is attached to the outer peripheral surface of the fixed portion 43 on the outer bearing bracket 17 side.

As shown in FIG. 2 and FIG. 4, a rod-like turning member 47 is provided at the bottom of the roller receiving member 19, and the lower insertion portion 45 of the turning member 47 is inserted above the fixing portion 43. In addition, the upper mounting portion 46 of the turning member 47 is mounted on the upper end surface 43 a of the fixed portion 43. A circular stopper plate 49 is provided at the lower end of the mounting portion 46 formed in a columnar shape or a cylindrical shape. The circular stopper plate 49 is in contact with the upper end surface 43 a of the fixing portion 43. The insertion portion 45 formed in a columnar shape or a cylindrical shape is integrally attached.

As shown in FIGS. 2 and 4, the roller receiving member 19 is processed from a steel pipe having an inner diameter substantially equal to the outer diameter D (for example, 150 to 200 mm) of the body of the inclined roller 12, and the upper part is opened. The cross section is formed in an arc shape. In addition, on the rear side in the longitudinal direction of the roller receiving member 19 (on the outer bearing bracket 17 side), the center angle ε formed by the arc is set to a substantially constant 90 to 120 °, and the front side (inner bearing bracket 15 side) is the center. The angle ε is gradually reduced.

The height H and the inclination angle γ of the roller receiving member 19 shown in FIGS. 1A and 1B are determined as follows. Note that the height H is a point T on the inner peripheral surface of the roller receiving member 19 and intersecting the axis of the swivel member 47, and the connecting portions of the abutting sliding plates 24 and 25 of the slide member 18 (of the support member 13. The vertical distance to the upper end J). Further, the inclination angle γ represents an angle at which the axial direction of the inner peripheral surface of the roller receiving member 19 intersects the horizontal direction.
That is, as shown in FIG. 1B, the inner shaft portion 35 of the inclined roller 12 is moved to the bearing portion (bearing plate 36) of the inner bearing bracket 15 at the forward limit position (the position also shown in FIG. 3) of the slide member 18. The outer shaft portion 37 is formed by a notch formed on the bearing portion of the outer bearing bracket 17 (the upper end portion of the bearing plate 38). It is set so as to be fitted to the upper end of Therefore, the inclination angle γ of the roller receiving member 19 is smaller than the inclination angle δ of the inclination roller 12. In the present embodiment, the inclination angle δ = 30 ° and the inclination angle γ = 20 °.

With this configuration, when the inclined roller 12 is removed, the outer shaft portion 37 is released from the bearing portion of the outer bearing bracket 17 at the forward limit position of the slide member 18, and the roller receiving member 19 is slightly (as an example, 5 to 15 °), the inclined roller 12 can be supported only by the roller receiving member 19 after being turned. On the other hand, when the inclined roller 12 is taken in, the roller receiving member 19 is turned at the forward limit position of the slide member 18 so that the cores of the inclined roller 12 and the inner bearing bracket 15 and the outer bearing bracket 17 are aligned. The shaft portion 37 can be inserted (fitted) into the bearing portion of the outer bearing bracket 17, the roller receiving member 19 can be retracted, the inner shaft portion 35 can be lowered, and inserted into the bearing portion of the inner bearing bracket 15. .

Next, a method of replacing the inclined roller 12 using the roller replacement jig 10 of the belt conveyor according to the first embodiment of the present invention will be described with reference mainly to FIGS. 1 (A) and 1 (B). The conveyor belt on the (old) inclined roller 12 to be replaced has a slight gap (about 100 mm at the narrowest position) above the inclined roller 12 using a chain block or the like in advance. It is lifted open.
(Jig placement process)
As shown in FIG. 1A, the roller replacement jig 10 is placed between the inner bearing bracket 15 and the outer bearing bracket 17 on the support member 13 on the outer bearing bracket 17 side via a slide member 18. To do.

(Inner shaft removal process)
When the operator holds the handle 44 of the roller replacement jig 10 in the state shown in FIG. 1A and pushes the roller replacement jig 10 inward along the support member 13, the inclined roller 12 through the roller receiving member 19. In the forward limit position of the slide member 18, as shown in FIG. 1B, the inner shaft portion 35 of the inclined roller 12 is lifted above the bearing portion of the inner bearing bracket 15, and The outer shaft portion 37 of the inclined roller 12 can be lifted up to the upper end portion of the bearing portion of the outer bearing bracket 17. The outer shaft portion 37 is raised, but is still in a state of being fitted with the bearing portion of the outer bearing bracket 17. Further, as shown in FIG. 3, the notches 41 and 42 at the front end portion of the slide member 18 at the forward limit position are engaged with the side plates 33 and 34 of the inner bearing bracket 15, and the subsequent steps are performed in this state. Even then, there is no fear that the roller replacement jig 10 will fall down, and a stable operation can be performed.

(Outer shaft removal process)
An operator removes (releases fitting) the outer shaft portion 37 of the inclined roller 12 fitted to the upper end portion of the bearing portion of the outer bearing bracket 17 from the bearing portion of the outer bearing bracket 17, and the outer shaft portion 37 becomes the outer bearing bracket. The operator turns the roller receiving member 19 by a small amount (for example, 5 to 10 °) so as not to interfere with the bearing portion 17, and supports the body portion of the inclined roller 12 by the roller receiving member 19.
(Roller removal process)
An operator can remove the roller so that the body portion of the outer diameter D of the inclined roller 12 does not interfere with the bearing portion of the outer bearing bracket 17 and that the inclined roller 12 can be pulled out from the roller receiving member 19 with sufficient space. The receiving member 19 is further rotated (for example, 10 to 20 °), and the operator removes the inclined roller 12 from the roller receiving member 19.

(Roller loading process)
An operator places the new inclined roller 12 on the roller receiving member 19 that is left as it is.
(Outer shaft insertion process)
An operator turns the roller receiving member 19 and aligns the cores of the inner shaft portion 35 and the outer shaft portion 37 of the new inclined roller 12 with the bearing portions of the inner bearing bracket 15 and the outer bearing bracket 17 as shown in FIG. ), The operator inserts the outer shaft portion 37 of the new inclined roller 12 into the upper end portion of the bearing portion of the outer bearing bracket 17.

(Inner shaft part insertion process)
When the operator holds the handle 44 of the roller replacement jig 10 in the state of FIG. 1B and pulls out the roller replacement jig 10 along the support member 13, a new inclined roller is provided via the roller receiving member 19. As shown in FIG. 1 (A), the inner shaft portion 35 of the new inclined roller 12 is inserted into the bearing portion of the inner bearing bracket 15 (see FIG. 1A). Fit).
(Jig removal process)
An operator removes the roller replacement jig 10 from the support member 13.
Finally, the conveyor belt lifted above the new inclined roller 12 is placed on the new inclined roller 12 using a chain block or the like.

In the above-described method of replacing the inclined roller 12, the conveyor belt is lifted above the inclined roller 12 with a slight gap. For example, the conveyor belt is lifted with a sufficient gap. In the case where the conveyor belt is not attached or the case where the conveyor belt is not attached, the following replacement method can be used.
First, as the roller replacement jig, the inner shaft portion 35 and the outer shaft portion 37 of the inclined roller 12 can be simultaneously lifted above the bearing portions of the inner bearing bracket 15 and the outer bearing bracket 17, respectively. That is, in the roller replacement jig 10, for example, a roller replacement jig in which the inclination angle γ of the roller receiving member 19 is the same as the inclination angle δ of the inclination roller 12 is used. Using this roller replacement jig, replacement work is performed as follows. It will be briefly described in comparison with the above description.

(Jig placement process)
A roller replacement jig is placed on the support member 13 via the slide member 18.
(Roller lifting process)
By pushing the roller replacement jig inward along the support member 13, the inner shaft portion 35 and the outer shaft portion 37 of the (old) inclined roller 12 are respectively connected to the bearing portion of the inner bearing bracket 15 via the roller receiving member. And lifted above the bearing portion of the outer bearing bracket 17.
(Roller removal process)
The roller receiving member is turned, and the inclined roller 12 is removed from the roller receiving member.

(Roller loading process)
A new inclined roller 12 is placed on the roller receiving member.
(Centering process)
The roller receiving member is turned to align the inner shaft portion 35 and the outer shaft portion 37 of the new inclined roller 12 with the bearing portions of the inner bearing bracket 15 and the outer bearing bracket 17.

(Roller installation process)
By pulling the roller replacement jig outward along the support member 13, the new inclined roller 12 is lowered, and the inner shaft portion 35 and the outer shaft portion 37 of the new inclined roller 12 are respectively connected to the bearing portion of the inner bearing bracket 15 and the inner shaft bracket 15. It is inserted into the bearing portion of the outer bearing bracket 17.
(Jig removal process)
The roller replacement jig is removed from the support member 13.

A roller conveyor jig 50 for a belt conveyor according to a second embodiment of the present invention shown in FIG. 5 will be described.
The roller replacement jig 50 of the belt conveyor is different from the roller replacement jig 10 of the belt conveyor only in the meshing portion formed at the front end portion of the slide material 51, and the others are the same. The same components as those of the belt conveyor roller replacement jig 10 are denoted by the same reference numerals, and detailed description thereof is omitted.

Guide plates 53 and 54, which are examples of meshing portions, are provided at the front end of the mounting plate 52 of the slide member 51 so as to face each other. The guide plates 53 and 54 are respectively side plates 33 and 34 of the inner bearing bracket 15. It comes in contact with and meshes with the outer surface. Further, in order to set the forward limit position of the slide member 51, a stopper surface 55 with which the tips of the side plates 33 and 34 abut is formed perpendicular to the traveling direction. The guide plates 53 and 54 are vertically provided with a gap W in the width direction, and a stopper surface 55 is formed in the width direction on the mounting plate 52 provided with the base end portions of the guide plates 53 and 54. With this configuration, the slide member 51 of the roller replacement jig 50 of the belt conveyor can mesh with the side plates 33 and 34 of the inner bearing bracket 15 in the same manner as the notches 41 and 42 of the roller replacement jig 10. Even with the various loads and acting forces that occur, there is no risk of falling and stable work can be performed.

A roller conveyor jig 60 for a belt conveyor according to a third embodiment of the present invention shown in FIG. 6 will be described.
Compared with the belt replacement roller replacement jig 10, the belt replacement roller replacement jig 60 is configured such that the swivel member 61 provided at the bottom of the roller receiving member 19 can move up and down with respect to the fixed portion 62. The only difference is that the rest is the same. The same components as those of the belt conveyor roller replacement jig 10 are denoted by the same reference numerals, and detailed description thereof is omitted.

The swivel member 61 is connected to the lower end part of the pipe-like bar part 63 arranged at the upper part and fixed to the bottom part of the roller receiving member 19, and a thread part in which a male screw is formed in the middle part in the length direction. 64 and a nut portion 65 that is screwed into the male screw of the screw portion 64. The nut portion 65 is screwed into the male screw of the screw portion 64 and is formed integrally with a cylindrical nut body 66 inserted through the upper portion of the fixing portion 62 and horizontally at the upper end portion of the nut body 66, and a lower surface 67 is formed. And a hexagonal stopper plate 69 placed on the upper end surface 68 of the fixed portion 62. Further, the nut 65 has a double nut structure in contact with the upper surface of the nut main body 66 and is provided with a locking nut 70 that is screwed into the male screw of the screw portion 64. Since the screw portion 64 can be locked with respect to the nut 70, the roller receiving member 19 provided on the turning member 61 can be rotated with respect to the fixed portion 62.
With this configuration, the swivel member 61 can adjust the height with respect to the fixed portion 62. Therefore, after the roller replacement jig 60 is placed on the support member 13 with the roller receiver member 19 lowered, the roller receiver Since the member 19 can be raised to a predetermined height, and the inclined rollers of other belt conveyors can be replaced, versatility is improved.

The present invention is not limited to the above-described embodiments, and can be changed without departing from the gist of the present invention. For example, some or all of the above-described embodiments and modifications are included. The case where the roller replacement jig of the belt conveyor of the present invention and the roller replacement method using the same are configured in combination are also included in the scope of the present invention.
In the embodiment described above, the notches 41 and 42 are formed in the slide material 18 of the roller replacement jig 10, and the guide plates 53 and 54 are provided on the slide material 51 of the roller replacement jig 50 to engage with each other. Although the part is configured, the present invention is not limited to this, and the meshing part may be omitted as necessary. Furthermore, a meshing part can also be formed according to the cross-sectional shape of an inner side bearing bracket so that it can apply to another belt conveyor.

As a turning mechanism of the roller receiving member 19, the lower insertion portion 45 is inserted above the fixing portion 43 provided on the slide member 18, and the upper placement portion 46 is mounted on the upper end surface 43 a of the fixing portion 43. However, the present invention is not limited to this, and other swiveling mechanisms can be used as necessary. Further, although the length of the turning member 61 is adjusted by the screw mechanism, the length is not limited to this, and another length adjusting mechanism can be adopted as necessary.
Although the handle 44 is provided in the fixing portions 43 and 62, the present invention is not limited to this, and the handle can be provided on the slide material depending on the situation, and the handle can be omitted.

(A), (B) is a section of the belt conveyor representing a state where the roller replacement jig of the belt conveyor according to the first embodiment of the present invention is placed on the support member, and a state where the belt conveyor is pushed into the forward limit position, respectively. FIG. It is a perspective view of the roller replacement jig of the same belt conveyor. It is arrow AA sectional drawing of FIG. 1 (B). It is arrow BB sectional drawing of FIG. 1 (B). It is a perspective view of the roller replacement jig of the belt conveyor which concerns on the 2nd Embodiment of this invention. It is a partially notched front view of the roller replacement jig of the belt conveyor which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

10: Belt conveyor roller replacement jig, 11, 12: Inclined roller, 13: Support member, 14, 15: Inner bearing bracket, 16, 17: Outer bearing bracket, 18: Slide material, 19: Roller receiving member, 20 , 21: side plate, 24, 25: contact sliding plate, 26, 27: side plate, 28: mounting plate, 29: back surface, 30: horizontal roller, 31: shaft portion, 32: bearing plate, 33, 34: side plate , 35: inner shaft portion, 36: bearing plate, 37: outer shaft portion, 38: bearing plate, 39, 40: side plate, 41, 42: notch, 43: fixing portion, 43a: upper end surface, 44: handle, 45: Insertion section, 46: Placement section, 47: Revolving member, 48: Lower surface, 49: Stopper plate, 50: Roller replacement jig for belt conveyor, 51: Slide material, 52: Mounting plate, 53, 54: Guide Board, 55: Topper surface, 60: roller conveyor jig for belt conveyor, 61: turning member, 62: fixed part, 63: rod part, 64: screw part, 65: nut part, 66: nut body, 67: lower surface, 68: upper End face, 69: Stopper plate, 70: Nut

Claims (7)

A pair of inclined rollers arranged on the left and right are respectively provided with a pair of inner bearing bracket and outer bearing bracket that are erected on a support member provided horizontally in the width direction of the belt conveyor immediately below the inclined roller. A belt replacement roller replacement jig for use in replacing the inclined roller of the belt conveyor that is rotatably supported via the belt conveyor,
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket;
A roller replacement jig for a belt conveyor, characterized in that it has a roller receiving member that stands upright on the slide material, has a circular arc cross section, and supports a lower portion of the inclined roller. 2. The roller replacement jig for a belt conveyor according to claim 1, wherein a lower portion is inserted into an upper portion of a cylindrical fixing portion provided on the slide member at the bottom portion of the roller receiving member, and the upper portion of the fixing portion. A roller replacement jig for a belt conveyor, characterized in that a bar-shaped swivel member on which an upper part is placed is provided on an end surface. The roller replacement jig for a belt conveyor according to claim 2, wherein a grip is provided on any one of the slide member and the fixed portion. The roller replacement jig for the belt conveyor according to any one of claims 2 and 3, wherein the swivel member includes a screw portion having a male screw formed on a lower side thereof, and a nut screwed into the male screw of the screw portion. A roller replacement jig for a belt conveyor. The roller replacement jig of the belt conveyor according to any one of claims 1 to 4, wherein an inner shaft portion of the inclined roller is located above a bearing portion of the inner bearing bracket at a forward limit position of the slide material. On the other hand, the height of the roller receiving member and the inclination angle with respect to the horizontal are set so that the outer shaft portion of the inclined roller is fitted to the bearing portion of the outer bearing bracket, and the slide member A roller replacement jig for a belt conveyor, characterized in that a front end portion is provided with a meshing portion that meshes with the inner bearing bracket at a forward limit position of the slide material. A pair of inclined rollers arranged on the left and right are respectively provided with a pair of inner bearing bracket and outer bearing bracket that are erected on a support member provided horizontally in the width direction of the belt conveyor immediately below the inclined roller. A method of replacing the inclined roller of a belt conveyor that is rotatably supported via
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket, and is slidably erected on the slide member. Using a roller replacement jig of a belt conveyor having a roller receiving member that supports the lower part of the inclined roller,
(1) a jig placement step of placing a roller replacement jig of the belt conveyor on the support member via the slide material;
(2) A roller replacement jig of the belt conveyor is pushed inward along the support member, whereby the inner shaft portion and the outer shaft portion of the old inclined roller are respectively inserted into the inner bearing bracket via the roller receiving member. A roller lifting step of lifting above the bearing portion of the outer bearing bracket and the bearing portion of the outer bearing bracket,
(3) a roller removing step of turning the roller receiving member and removing the old inclined roller from the roller receiving member;
(4) a roller taking-in step of placing the new inclined roller on the roller receiving member;
(5) A centering step of turning the roller receiving member to align the inner shaft portion and the outer shaft portion of the new inclined roller with the bearing portions of the inner bearing bracket and the outer bearing bracket;
(6) Pulling out the roller replacement jig of the belt conveyor to the outside along the support member, the new inclined roller is lowered, and the inner shaft portion and the outer shaft portion of the new inclined roller are respectively connected to the inner bearing. A roller mounting step for inserting into the bearing portion of the bracket and the bearing portion of the outer bearing bracket;
(7) A roller replacement method using a roller replacement jig for a belt conveyor, comprising: a jig removing step for removing the roller replacement jig for the belt conveyor from the support member. A pair of inclined rollers arranged on the left and right are respectively provided with a pair of inner bearing bracket and outer bearing bracket that are erected on a support member provided horizontally in the width direction of the belt conveyor immediately below the inclined roller. A method of replacing the inclined roller of a belt conveyor that is rotatably supported via
A slide member that is guided and movable along the support member between the inner bearing bracket and the outer bearing bracket, and is slidably erected on the slide member. Using a roller replacement jig of a belt conveyor having a roller receiving member that supports the lower part of the inclined roller,
(1) a jig placement step of placing a roller replacement jig of the belt conveyor on the support member via the slide material;
(2) By pushing the roller replacement jig of the belt conveyor inward along the support member, the inner shaft portion of the old inclined roller is placed above the bearing portion of the inner bearing bracket via the roller receiving member. On the other hand, an inner shaft removing step of lifting the outer shaft portion of the old inclined roller to the upper end portion of the bearing portion of the outer bearing bracket;
(3) Removing the outer shaft portion of the old inclined roller from the bearing portion of the outer bearing bracket, turning the roller receiving member, and removing the outer shaft portion that supports the barrel portion of the old inclined roller by the roller receiving member. Process,
(4) A roller removing step of further rotating the roller receiving member and removing the old inclined roller from the roller receiving member;
(5) a roller taking-in step of placing the new inclined roller on the roller receiving member;
(6) Rotating the roller receiving member, aligning the inner shaft and outer shaft of the new inclined roller with the inner bearing bracket and outer bearing bracket, and aligning the outer shaft of the new inclined roller with the outer An outer shaft insertion step for inserting into the bearing portion of the bearing bracket;
(7) Pulling out the roller replacement jig of the belt conveyor to the outside along the support member to lower the roller receiving member and insert a new inner shaft portion of the inclined roller into the bearing portion of the inner bearing bracket An inner shaft inserting step,
(8) A roller replacement method using a roller replacement jig for a belt conveyor, comprising: a jig removing step for removing the roller replacement jig for the belt conveyor from the support member.

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