WO2012008062A1

WO2012008062A1 - Belt mounting jig

Info

Publication number: WO2012008062A1
Application number: PCT/JP2010/069045
Authority: WO
Inventors: 深谷敏史
Original assignee: ゲイツ・ユニッタ・アジア株式会社
Priority date: 2010-07-13
Filing date: 2010-10-27
Publication date: 2012-01-19

Abstract

A belt mounting jig which enables a belt to be easily mounted on a pulley even if the space at a side of the pulley is insufficient. Specifically, a mounting section (9) is configured from a cover section (8) and the tip of an adjusting bolt (13) which serve as a gripping section. A belt mounting jig (1) is mounted to a pulley (5) by the gripping section which grips the pulley (5) from both the inner peripheral side of a recess (10) in a side surface of the pulley (5) and the outer peripheral side of the pulley groove (3). A belt (2) engaged with the pulley groove (3) is covered with the cover section (8) from the outer peripheral side. The belt (2) is pressed toward the bottom of the pulley groove (3). The belt (2) is prevented from coming off the pulley (5). The pulley (5) is rotated to move the belt mounting jig (1) together with the pulley (5). More and more area of the belt (2) is gradually engaged with the pulley groove (3), and the belt (2) is mounted to the pulley (5).

Description

Belt mounting jig

The present invention relates to a belt attachment jig for attaching a belt expandable in the circumferential direction to the pulley groove while rotating a pulley having a pulley groove on the outer peripheral surface.

Generally, in a belt transmission mechanism in which a belt is wound around a plurality of pulleys having pulley grooves on the outer peripheral surface, a tension such as a tension pulley is applied to apply a predetermined belt tension after attaching the belt to the plurality of pulleys. Adjustment means are provided.

In order to eliminate the need for such tension adjustment means, a belt has been developed which is extended in the circumferential direction and attached to the pulley flange when attached to the pulley, and Patent Document 1 discloses the belt in the circumferential direction. A belt mounting jig is disclosed for overcoming the pulley flange and fitting it into the pulley groove while stretching.

The belt attachment jig which patent document 1 discloses in FIG. 11 is shown. The belt mounting jig 101 is used by being mounted on the pulley 102, and the belt 104 is fitted in the pulley groove 103 on the rear side in the pulley rotation direction with respect to the belt mounting jig 101. The belt 104 is placed on and held by the holding surface 106 located on Furthermore, the belt 104 is wound around the other pulley, and the pulley 102 is rotated to advance the belt attachment jig 101 forward in the pulley rotation direction, and the range of the belt 104 fitted in the pulley groove 103 is gradually expanded. Belt 104 is attached to pulley 102.

JP-A-2006-300172 (paragraphs 0028, 0035, 0036, 0043, 0044, FIG. 6)

However, the belt attachment jig of Patent Document 1 requires a space on the side of the pulley, for example, about the same as the belt width, because the holding surface is positioned outside the pulley flange in the axial direction of the pulley and the belt is applied. Therefore, if there is a sufficient space on the side of the pulley, the belt can be easily attached, but if there is not enough space on the side of the pulley, attach the belt attachment jig to the pulley. It is likely to be difficult to attach a belt.

An object of the present invention is to provide a belt attachment jig capable of easily attaching a belt even when there is not enough space on the side of a pulley.

In order to achieve the above object, a belt attaching jig according to the present invention is for attaching a belt which can be extended in the circumferential direction to a pulley having a pulley groove on an outer peripheral surface. A mounting portion for mounting so as to move integrally, and a cover portion which covers a part of the portion of the belt fitted in the pulley groove and maintains the state of being fitted in the pulley groove of a part of the belt It is a thing.

According to the above configuration, since a part of the portion of the belt fitted in the pulley groove is covered with the covering portion, the belt is not held by the side of the pulley as in the conventional belt mounting jig, but from the pulley groove It can prevent the belt from coming off. As a result, even if there is not enough space on the side of the pulley, the belt mounting jig can be mounted at a predetermined position, and the belt can be easily mounted while rotating the pulley. In addition, since it is not necessary to guide and hold the side of the pulley while keeping the position of the belt in the radial direction of the pulley approximately the same as the outer peripheral surface of the pulley flange, the belt stretches when attaching the belt while rotating the pulley The load on the belt, pulley, pulley shaft, etc. can be reduced as much as possible.

Here, the covering portion covers a part of the back of the belt from the radially outer side of the pulley, a part projecting radially outward from the vicinity of the pulley flange and covering a part of the side of the belt, The thing which covers each one part can be illustrated. In particular, the one that covers a part of the back of the belt can prevent the belt from coming off from the pulley groove without projecting outward in the radial direction of the pulley, and the space required on the side and outer periphery of the pulley is minimized. can do.

The belt is fitted to the pulley groove at the rear in the pulley rotation direction with the cover part as the boundary, and the belt is put on the axial direction front side of the pulley at the front in the pulley rotation direction to hang the belt on the pulley without tension. be able to. Furthermore, when the pulley is rotated, the cover also rotates in the circumferential direction following this, so the belt passing axially forward of the pulley ahead of the cover in the rotational direction of the pulley moves radially outward And when it reaches the radial direction outer side rather than the outer peripheral surface of a pulley flange, over a pulley flange, it fits in a pulley groove | channel.

In order to move the belt mounting jig integrally with the pulley, any method may be adopted such as mounting the mounting portion of the belt mounting jig on, for example, a pulley shaft, but the belt mounting jig may be employed. Can be fixed directly to the pulley, the structure for moving the belt attachment jig integrally with the pulley can be simplified. Furthermore, in order to fix the belt attachment jig to the pulley, various methods such as screwing can be adopted, and the belt attachment jig has a string-like structure capable of binding the pulley and the belt. As a result, the belt can be fixed to the pulley and the belt back surface and the belt side surface can be partially covered.

In addition, the mounting portion is provided with at least a pair of clamping portions sandwiching a part of the pulley, and the belts are paired with each other so as to sandwich a part of the belt with a part of the pulley and push it toward the groove bottom of the pulley groove. It is also possible to adopt a configuration in which one of the clamping portions is also used as the covering portion.

According to this configuration, since one of the clamping portions is also used as the covering portion, the belt is fitted in the pulley groove at the covering portion by mounting the belt mounting jig with the clamping portion sandwiching a part of the pulley. Can be pressed toward the bottom of the groove. As a result, when the belt is attached while rotating the pulley while preventing the belt from coming out of the pulley groove, the belt is prevented from slipping on the pulley and the belt attachment jig is removed from the pulley. It can be prevented. In addition, since the cover portion presses the belt, the belt can be prevented from coming off by covering a part in the belt width direction without covering the full width of the belt, and a common belt attachment for attachment of belts of various belt widths A jig can be employed.

Furthermore, it is also possible to adopt a configuration in which an adjustment bolt capable of adjusting the distance between the pair of clamping parts is provided.

According to this configuration, since the adjustment bolt for adjusting the distance between the clamping portions is provided, it is possible to sandwich the pulley and the belt by the pair of clamping portions reliably and with sufficient strength while adopting a simple structure. In addition, the same belt attachment jig can be mounted on various pulleys different in pulley diameter and the like by adjusting the distance between the clamping portions. In addition, as a structure for adjusting the distance between the pair of clamping parts, not only the adjusting bolt but also the biasing force of the spring, the magnetic force of the magnet, air pressure, oil pressure, etc. can be used.

In addition, in the case where the recess is formed on the side surface of the pulley, a configuration in which the pair of sandwiching portions are set so as to sandwich the pulley from the inner peripheral side of the recess and the outer peripheral side of the pulley groove may be employed.

According to this configuration, the pulley and the belt can be pinched by utilizing the concave portion on the side surface of the pulley, and the belt attachment jig can be mounted simply by pinching the outer peripheral portion of the pulley. As a result, the belt mounting jig can be miniaturized. The center bolt of the pulley and the outer peripheral side of the pulley groove can be sandwiched instead of sandwiching the outer peripheral portion using the recess of the pulley.

In addition, the mounting portion is provided with a fastening body that can be fastened to the pulley, and one of the clamping portions that doubles as the covering portion can be engaged with the engaging portion formed in the fastening body. It is also possible to adopt a configuration in which a part of the belt and a part of the pulley are nipped together with a part of the fastening body at the pair of clamping parts.

According to this configuration, since the clamping portion forming a pair with the cover portion is engaged with the engaging portion formed on the fastening body, the fastening body can be securely and stably fixed to the pulley. At the same time, as a structure capable of reliably and stably engaging the engaging portion with the clamping portion, displacement of the clamping portion can be made difficult to occur. As a result, the belt mounting jig can be mounted more stably than in the structure in which the other clamping portion is directly engaged with the pulley.

Furthermore, as a configuration for enabling the fastening body to be fastened to the pulley, when a recess is formed on the side surface of the pulley, a configuration in which the fastening body can be fitted to the recess can be exemplified. As a configuration of the above, it is possible to exemplify a configuration in which the fitting body is provided with a fitting portion that can be fitted to the center bolt of the pulley.

According to these configurations, only by causing the fastening body to be fitted in the recess or fitting the fitting portion provided in the fastening body to the center bolt of the pulley, it is possible to stop without causing displacement or the like. The attached body can be securely and stably fastened.

In addition, a configuration in which the mounting portion is a fastening body that can be fastened to the pulley, and the fastening body and the cover portion are integrally provided may be employed.

According to this configuration, the cover can be stably arranged without being displaced or deviated from the predetermined position as a structure capable of firmly and stably fixing the fastening body to the pulley.

Moreover, the structure which provided the soft material softer than another site | part in the site | part which contacts a pulley is also employable.

According to this configuration, for example, when the main body of the belt attachment jig is formed of metal, when attaching the belt by providing a soft material such as a synthetic resin or rubber at a portion in contact with the pulley, the belt attachment is fixed. It is possible to prevent the pulley in contact with the tool from being damaged. Here, in the present specification, soft means that the two materials are more easily scratched when rubbed.

In addition, a configuration in which a flange cover that covers a part of the flange of the pulley is provided may be employed.

According to this configuration, the belt directly rubs against the pulley flange at a portion where the belt fitted over the pulley groove passes over the pulley flange so that the belt fitted in the pulley groove passes the front side in the axial direction of the pulley You can prevent it from sticking.

As described above, according to the present invention, a part of the portion of the belt fitted in the pulley groove is covered with the covering portion to prevent the belt from coming out of the pulley groove, so that the belt is on the pulley side as in the prior art. The belt can be easily attached even when there is no need to hold by one side and there is not enough space on the side of the pulley. Furthermore, by pressing the belt toward the groove bottom of the pulley groove, it is possible to prevent the belt from coming off without causing the cover to protrude radially outward of the pulley and without covering the entire width of the belt with the cover. be able to.

Thus, the belt can be attached without interfering with other parts disposed on the side and outer periphery of the pulley, and a part in the belt width direction can be covered to prevent the belt from coming off. As a result, in a belt-pulley system of various pulley diameters, belt widths and layouts, a common belt attachment jig can be used, and the versatility of the belt attachment jig can be enhanced and its cost can be reduced. .

A perspective view of a pulley equipped with a belt mounting jig according to a first embodiment of the present invention The perspective view of the belt attachment jig of 1st Embodiment Sectional view of a pulley equipped with the belt mounting jig of the first embodiment The figure which shows a mode that a belt is attached to a pair of pulleys using the belt attachment jig | tool of 1st Embodiment. The perspective view of the pulley equipped with the belt attachment jig of a 2nd embodiment The perspective view of the belt attachment jig of 2nd Embodiment Sectional view of a pulley equipped with a belt attachment jig of the second embodiment The perspective view of the pulley equipped with the belt attachment jig of a 3rd embodiment The perspective view of the belt attachment jig of 3rd Embodiment Sectional view of a pulley equipped with a belt attachment jig of the third embodiment The perspective view which shows the conventional belt attachment jig

DESCRIPTION OF

SYMBOLS

1, 17, 22 Belt attachment jig 2

Belt

3, 4

Pulley groove

5, 6

Pulley

7, 18, 25 Jig

main body

8, 19, 29

Cover part

9, 21, 32 Mounting part 10

Concave part

11, 26 Outer piece 12 20, 27 Inner piece 13 Adjustment bolt 14 Pulley flange 15 Center bolt 16 Tool 23 Fastening body 24 Fitting tube 28 Soft material 30 Engagement hole 31 bolt

Hereinafter, first to third embodiments of a belt attachment jig according to the present invention will be described with reference to the drawings.

First Embodiment
As shown in FIGS. 1 to 4, the belt mounting jig 1 is, for example, a belt-pulley system of an engine, for example, a pair of pulleys 5 having

pulley grooves

3 and 4 on the outer peripheral surface of a belt 2 which can extend in the circumferential direction. , 6 and covers a part of the portion of the belt 2 fitted in the pulley groove 3 with the jig body 7 disposed on the side of the outer peripheral part of the pulley 5 and the pulley groove A cover 8 for maintaining the state of fitting to the cover 3 and a mounting portion 9 for mounting the belt mounting jig 1 so as to move integrally with the pulley 5. For example, a recess 10 is formed on the side surface The belt 2 is attached to one of the pulleys 5 while the pulley 5 is rotated with the other pulley 6.

The belt 2 is a V-ribbed belt or the like which can be extended in the circumferential direction so as to make tension adjustment means such as a tensioner unnecessary, and the belt 2 is formed by embedding a core wire made of polyamide in the belt body, for example. Is attached to the belt and pulley system, the circumferential elongation is set to 2 to 5%. The belt 2 may be a belt other than a V-ribbed belt such as a flat belt.

The jig main body 7 is, for example, made of metal and has a U-shaped plate shape having an outer piece 11 and an inner piece 12 at both ends, and the outer piece 11 and the inner piece 12 are respectively viewed from the side of the outer peripheral portion of the pulley 5 It is disposed so as to enter the outer peripheral side of the pulley 5 and the recess 10.

The cover 8 is narrower than the pulley groove 3 and formed so as to slightly project inward from the outer piece 11. By mounting the belt mounting jig 1 on the pulley 5, the cover 8 can be configured to receive the belt 2. It is designed to be pushed toward the groove bottom of the pulley groove 3.

The mounting portion 9 includes a cover portion 8 formed on the outer piece 11 and an adjustment bolt 13 provided on the inner piece 12, and the cover portion 8 and the tip of the adjustment bolt 13 are recessed in the outer peripheral portion of the pulley 5. A pair of sandwiching portions sandwiching the inner circumferential side of 10 and the outer circumferential side of the pulley groove 3 is provided.

The adjustment bolt 13 is screwed to the inner piece 12 so that the distance between the tip end thereof and the cover 8 can be adjusted, and by pinching a part of the belt 2 with the outer peripheral part of the pulley 5 In the cover portion 8 which is also used as one of the belts, the belt 2 can be pushed toward the groove bottom of the pulley groove 3 in a necessary and sufficient manner.

Next, a procedure for attaching the belt 2 to the pair of

pulleys

5 and 6 using the belt attachment jig 1 will be described.

As shown in FIG. 4, first, the belt 2 is fitted into the pulley groove 4 of the pulley 6, and the belt mounting jig 1 is disposed on the side of the outer peripheral portion of the pulley 5. The belt 2 is fitted in the pulley groove 3 that is on the rear side of the pulley rotational direction than 1. Further, the belt 2 forward in the pulley rotational direction with respect to the belt attachment jig 1 is pulled out so as to straddle the pulley flange 14 so as to pass the side of the pulley 5. In this state, no tension acts on the belt 2 and the belt 2 can be easily applied to the

pulleys

5 and 6.

Further, the outer piece 11 and the inner piece 12 of the jig body 7 are respectively made to enter the outer peripheral side of the pulley 5 and the recess 10 to tighten the adjusting bolt 13, and the cover 8 and the tip of the adjusting bolt 13 The outer peripheral portion of the pulley 5 is pinched in the radial direction together with a part. Thus, the belt mounting jig 1 is mounted on the pulley 5, and the cover 8 of the belt mounting jig 1 presses the belt 2 toward the bottom of the pulley groove 3.

Then, for example, a commercially available tool 16 is attached to the center bolt 15 of the pulley 5 to rotate the pulley 5. As a result, the belt mounting jig 1 advances forward in the pulley rotation direction while the belt 2 is extended, and the range in which the belt 2 is fitted into the pulley groove 3 is expanded, and eventually the belt 2 is completely in the pulley groove 3 It is fitted and attached to the pulley 5.

Thereafter, the adjustment bolt 13 is loosened and the belt mounting jig 1 is removed from the pulley 5 to complete the mounting of the belt 2.

The pulley 5 on which the belt attachment jig 1 is mounted may be either a driving pulley or a driven pulley. Further, in order to attach the belt 2 by rotating the pulley 5, not only the pulley 5 on which the belt attachment jig 1 is attached is directly rotated, but by rotating the other pulley 6, the belt 2 is interposed via the belt 2 The pulley 5 on which the mounting jig 1 is mounted may be rotated.

According to the above configuration, since the belt 2 is pressed by the cover portion 8 of the belt mounting jig 1, the belt 2 is not held by the side of the pulley 5 as in the conventional belt mounting jig and It is possible to prevent the belt 2 from coming off the pulley 5 without largely projecting to the outer peripheral side. As a result, even if the pulley layout does not have a sufficient space on the side and the outer peripheral side of the pulley 5, the belt 2 can be attached to the

pulleys

5 and 6 without interfering with other parts and the like.

In addition, since the distance between the clamping portions is adjusted by the adjustment bolt 13, it can be mounted on pulleys of various shapes. In addition, since the belt 2 can be sufficiently sufficiently pressed without covering the entire width of the belt 2 by the covering portion 8 and the detachment from the pulley 5 can be prevented, it is common to belt-pulley systems of various belt widths. The belt attachment jig 1 can be used.

Thus, for example, the pulley diameter of the pulley 5 is φ90 to 180 mm, the belt 2 has 3 ribs to 8 ribs (belt width is 10 mm to 25 mm), the side clearance of the pulley 5 is about 10 mm, The common belt attachment jig 1 can be used in the range where the clearance is about 5 mm, and the versatility can be enhanced. In addition, the application range of the belt attachment jig 1 can be suitably set to the application range different from said range.

Further, since the cover portion 8 of the belt mounting jig 1 presses the belt 2 toward the pulley groove 3, slippage of the belt 2 with respect to the pulley groove 3 can be prevented. In addition, it is not necessary to pull out the belt 2 to the side of the pulley by the width of the belt as in a conventional belt attachment jig holding the belt 2 on the side of the pulley 5, and the tension accompanying the extension of the belt 2 at the time of belt attachment Of the belt 2, the

pulleys

5, 6 and the pulley shaft can be reduced.

Second Embodiment
As shown in FIGS. 5 to 7, the belt attachment jig 17 of the second embodiment has substantially the same configuration as the belt attachment jig 1 of the first embodiment, but without providing the adjustment bolt 13. The jig main body 18 is used as the belt mounting jig 17 as it is.

The cover 19 does not protrude from the outer piece of the jig main body 18, and the outer piece is used as the cover 19 as it is, and the outer piece and the inner piece 20 as the cover 19 are the belt attachment jig 17. The mounting portion 21 is configured as a clamping portion. In addition, the cover portion 19 and the inner piece 20 are formed in a curved surface having the same degree of curvature as the back surface of the belt 2 with which they are in contact and the inner peripheral surface of the recess 10.

The distance between the cover portion 19 and the inner piece 20 is set to be approximately the same as the distance from the back surface of the belt 2 to the inner peripheral surface of the recess 10, and the cover portion 19 and the inner piece 20 As a result, the belt mounting jig 17 is attached to the pulley 5, and the belt 2 is slightly compressed and deformed and is pressed toward the groove bottom of the pulley groove 3.

According to the above configuration, while adopting a structure simpler than the belt attachment jig 1 of the first embodiment, in the same manner as the first embodiment, the pulley layout does not have a sufficient space on the side and outer periphery of the pulley 5 Even if it is, the belt 2 can be attached to the

pulleys

5 and 6 without interfering with other parts and the like. The other configuration is the same as that of the first embodiment.

Third Embodiment
As shown in FIGS. 8 to 10, the belt attachment jig 22 of the third embodiment has substantially the same configuration as the belt attachment jigs 1 and 17 of the first embodiment and the second embodiment. A fastening body 23 that can be fastened is provided.

The fastening member 23 is formed in a disk shape made of resin, rubber, metal or the like, and a fitting cylinder 24 as a fitting portion which can be fitted to the center bolt 15 of the pulley 5 is threaded so as to penetrate the central hole thereof. It is stopped. The fastening body 23 is fitted to the recess 10 of the pulley 5, and the fitting cylinder 24 is fitted to the center bolt 15 of the pulley 5 to be fastened to the pulley 5.

The jig body 25 is made of, for example, metal and is formed in a U-shaped plate shape having the outer piece 26 and the inner piece 27, and is softer than the jig body 25 on the side contacting the pulley 5 in the portion excluding the inner piece 27. A soft material 28 such as resin or rubber is provided. The soft material 28 prevents the pulley 5 from being damaged when attached to the pulley 5, and the portion covering the outer piece 26 functions as the cover portion 29 of the belt attachment jig 22.

In the jig body 25, the cover portion 29 of the pair of clamping portions presses the belt 2 toward the groove bottom of the pulley groove 3, and the inner piece 27 is formed in the vicinity of the center of the fastening member 23. It is engaged with the engagement hole 30 as a joint. Further, the jig body 25 is surely integrated with the fastening body 23 by the bolt 31 screwed in the vicinity of the inner end thereof.

Thus, the fastening body 23 and the cover 29 and the inner piece 27 as the sandwiching part of the jig main body 25 constitute the mounting portion 32 of the belt attachment jig 22, and the cover 29 and the inner piece 27 The belt 2 and the outer peripheral portion of the pulley are sandwiched together with the outer peripheral portion of the fastening body 23.

According to the above configuration, as in the first and second embodiments, even if the pulley layout does not have a sufficient space on the side and the outer peripheral side of the pulley 5, the pulley 5 does not interfere with other parts etc. 6, the belt 2 can be attached. Moreover, since the fastening body 23 is securely fastened to the pulley 5 and the inner piece 27 of the jig main body 25 is engaged with the fastening body 23, the jig body 25 is directly attached to the pulley 5 It is possible to make the displacement of the jig main body 25 less likely to occur. The other configurations are the same as in the first and second embodiments.

In addition, this invention is not limited to said embodiment, A change can be suitably added within the scope of the present invention. For example, instead of the adjusting bolt 13 of the first embodiment, a part of the pulley may be pinched and the belt 2 may be pressed by using the magnetic force of a magnet, the biasing force of a spring, air pressure, oil pressure, or the like. Good. In addition to sandwiching the outer peripheral portion of the pulley 5, the clamping portion may sandwich the center bolt 15 and the outer peripheral side of the pulley 5.

As in the third embodiment, instead of forming the mounting portion 32 by the fastening body 23 and the cover portion 29 and the inner piece 27 as the clamping portion of the jig main body 25, the mounting portion is formed only by the fastening body. It is also possible to provide a cover portion integrally with the fastening body.

The covering portion is not limited to pressing the belt 2 toward the groove bottom of the pulley groove 3, but covers only the back side and / or the side of the belt 2 so that the belt 2 is released from the pulley groove 3. May be used to Furthermore, the belt attachment jig may be provided with a cord-like structure attachable to the pulley 5 while binding the belt 2 and the pulley 5 and covering the back side and the side of the belt 2.

The belt attachment jig may be one that moves integrally with the pulley 5 and may be attached to, for example, the pulley shaft of the pulley 5 instead of being attached to the pulley 5. In addition, a flange cover that covers a part of the pulley flange 14 may be provided to prevent the belt 2 at a portion passing over the pulley flange 14 from being directly rubbed against the pulley flange 14 to be damaged.

The belt mounting jig according to the present invention covers the belt fitted in the pulley groove to prevent the belt from coming off from the pulley groove, and therefore, for the belt mounting operation when there is not enough space on the side of the pulley. It can be suitably adopted.

Claims

A belt mounting jig for mounting a circumferentially extensible belt on a pulley having a pulley groove on an outer peripheral surface, the mounting portion for mounting the belt mounting jig so as to move integrally with the pulley A belt mounting jig comprising: a cover portion for covering a part of a portion of the belt fitted in a pulley groove and maintaining a state where the belt is fitted in a part of the pulley groove.
The mounting portion includes at least a pair of clamping portions sandwiching a portion of the pulley, and the clamping portions forming a pair so as to sandwich a portion of the belt with a portion of the pulley and press the belt toward the groove bottom of the pulley groove The belt mounting jig according to claim 1, wherein one of the two is also used as the cover.
The belt mounting jig according to claim 2, further comprising: an adjusting bolt capable of adjusting a distance between the pair of clamping parts.
The recessed portion is formed on the side surface of the pulley, and the pair of sandwiching portions are set to sandwich the pulley from the inner peripheral side of the recessed portion and the outer peripheral side of the pulley groove. Or the belt attachment jig as described in 3.
The mounting portion is provided with a fastening body that can be fastened to the pulley, and one of the clamping portions that is also used as the cover portion is paired with the other and the other is formed on the fastening body The second embodiment is characterized in that it is engageable with a part, and the pair of clamping parts are set so as to sandwich a part of the belt and a part of the pulley together with a part of the fastening body. Or the belt attachment jig as described in 3.
The belt mounting jig according to claim 5, wherein a concave portion is formed on a side surface of the pulley, and the fastening body can be fitted into the concave portion.
The belt mounting jig according to claim 5, wherein the fastening body is provided with a fitting portion which can be fitted to a center bolt of a pulley.
The belt mounting jig according to claim 1, wherein the mounting portion is a fastening body capable of being fastened to a pulley, and the fastening body and the cover portion are integrally provided.