JP2012057683A - Adjustment tool for tension between pulleys and method for adjusting tension - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adjustment tool for tension between pulleys which is small and lightweight, is excellent in portability and also does not require a special device, and a method for adjusting tension which can be performed easily and swiftly.SOLUTION: A representative adjustment tool 315 for tension between pulleys includes a first fitting member 312 fitted on a pulley on one side to press to a pair of pulleys looped with a belt, a second fitting member 313 fitted on a pulley on another side to apply pressure in a direction of separation from the pulley on one side, and a support member 314 for supporting the first and second fitting members. In the tension adjustment tool, the first and the second fitting members include a fitting face which fits the pulley, a fitting part which forms the fitting face on the end face, a male screw part fixed on the side opposite to the fitting face of the fitting part, and a nut screwed to the male screw part, and the support member includes a support member body, a plurality of side walls orthogonal to an axial direction of the male screw part and arranged in the axial direction, and a hole provided on the side wall.

Description

  The present invention relates to a tension adjusting jig between pulleys and a method for adjusting the tension of a belt for transmitting a driving force from one motor to another motor, for example.

  As shown in FIG. 10, a belt 104 is provided between a pulley 109 provided on a motor shaft 108 and a pulley 102 provided on a cooling fan shaft 103 as a transmission mechanism for transmitting power from a motor 105 to a distribution substation cooling fan 101. A mechanism that stretches and transmits a driving force through the belt 104 is known.

  Although a timing belt (a belt with teeth) may be used as the belt, a V belt or a flat belt is often used in consideration of an overload on the motor. As these belts extend with age, and the pulleys and belts wear, the tension eventually decreases. The tension of the belt 104 is adjusted by increasing the distance between the pulleys. That is, the motor 105 is separated from the cooling fan 101 while maintaining the parallel axis. However, when the tension of the belt 104 is adjusted by the position adjusting bolt 107 on the mount 106 of the motor 105 with the belt 104 stretched between the pulleys, a strong tension is applied although it is lowered. For this reason, it is difficult to move the motor 105 in parallel, and there is a problem that centering between the pulleys cannot be performed (the pulleys are displaced).

  Here, the position adjusting bolt 107 is located on the side surface of the gantry 106 of the motor 105 and is screwed with a stopper of the motor 105 on the back side of the gantry 106. The distance between the motor 105 and the cooling fan 101 can be adjusted by turning the position adjusting bolt 107. Centering between pulleys means adjusting so that the motor shaft 108 and the cooling fan shaft 103 are parallel and the pulley surfaces are on the same plane.

  Therefore, conventionally, it is necessary to first remove the belt 104, adjust the position of the motor 105 with the position adjusting bolt 107 and perform centering between the pulleys, and then attach the belt 104 again. However, attaching and removing the belt 104 requires skill and labor.

As a technique for solving this problem, there is a “belt tension adjusting jig” (Patent Document 1).
The belt tension adjusting jig according to the present invention adjusts the tension of a belt stretched between a drive pulley attached to a crankshaft of a vehicle engine and a driven pulley attached to a pump shaft of a power steering pump. It is configured as a jig, and the tension adjustment work is performed by adjusting the distance between the drive pulley and the driven pulley with this jig, for example, with the adjustment bolt loosened, and the belt tension is set constant. At this point, the adjustment bolt is tightened and the positional relationship is fixed.

JP 2000-46132 A

  However, the “belt tension adjusting jig” is mainly composed of a cylinder unit that operates with air pressure to adjust the belt tension. For this reason, a compressor is required that is not only large and heavy but inferior in portability but also produces high-pressure air. The price is also expensive.

  Therefore, an object of the present invention is to provide a tension adjusting jig between pulleys that is small and light, excellent in portability, and does not require a special device, and a tension adjusting method that can be easily and quickly performed.

  A typical tension adjusting jig between pulleys according to the present invention includes a first fitting member that fits and presses against a pair of pulleys on which a belt is stretched, and the other side. A second fitting member that is fitted in the pulley and pressed away from the one pulley, and a support member that supports the first and second fitting members. The fitting member 2 includes a fitting surface that is fitted to the pulley, a fitting portion that forms the fitting surface on an end surface, and a male screw that is fixed to the opposite side of the fitting surface of the fitting portion. And a nut screwed into the male screw portion, and the support member includes a support member main body, a plurality of side walls orthogonal to the axial direction of the male screw portion and arranged in the axial direction, and the side wall A male threaded portion of the first and second fitting members from the hole in the side wall on the outside of the support member. Inserted into the hole of the side wall in, and adjusts the feed amount of said fitting member by rotating said nut in said fitting member side wall in the inside.

  According to such a configuration, it is possible to provide a tension adjusting jig between pulleys that is small and light, has excellent portability, and does not require a special device.

  The support member includes a support member body, a first support member attachment portion having a plurality of the side walls, and a second support member attachment portion having a plurality of the side walls. A plurality of holes are arranged in a direction, and the support member attachment portion has a hole facing the hole of the support member body, and the holes of the first and second support member attachment portions and the hole of the support member body are formed. It is preferable that the first and second support member appendages can be fixed at different positions with respect to the support member body by fixing with bolts and nuts.

  According to such a configuration, the support member can be shortened by separating the support member into the support member main body and the support member attachment portion, thereby increasing portability, and changing the fixing position between the support member main body and the support member attachment portion. The length of the support member is variable.

  The fitting surface of the fitting member is preferably made of a flexible material. According to this configuration, the fitting surface does not damage the pulley.

  The support member main body is preferably L-shaped steel. According to such a configuration, the support member is small and light and strong.

  In a typical tension adjusting method between pulleys according to the present invention, a tension adjusting jig is attached between the pulleys with a belt stretched between the pulleys, and a fixing screw for a motor having a pulley on one side is loosened. The nut of the tension adjusting jig is rotated to move the first fitting member and the second fitting member in the direction of widening the pulley interval, and the position adjustment bolt of the motor is rotated to rotate the pulley interval. The motor is moved in a direction to spread the belt, and after confirming the slack of the belt and the centering between the pulleys, the fixing screw of the motor is tightened and the tension adjusting jig is removed from between the pulleys. .

  According to this method, the tension between the pulleys can be adjusted easily and quickly without removing the belt.

  In the case of a parallel multistage pulley, it is preferable to attach a tension adjusting jig between the outer pulleys. According to this method, the moment for rotating the motor increases.

  According to the present invention, it is possible to provide a tension adjusting jig between pulleys that is small and light, has excellent portability, and does not require a special device, and can easily and quickly adjust the tension between pulleys without removing the belt. it can.

It is a front view of the tension adjustment jig between pulleys. It is a front view of a fitting member. It is a perspective view of a supporting member. It is a mounting view of a tension adjustment jig between pulleys. It is an exploded view explaining the other structure of a supporting member. It is a tension adjustment flowchart between pulleys. It is a front view of a motor. It is a right view of a motor. It is a top view of a motor. It is a distribution substation cooling equipment block diagram.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  1 is a front view of a tension adjusting jig between pulleys, FIG. 2 is a front view of a fitting member, FIG. 3 is a perspective view of a support member 4, and FIG. 4 is a mounting view of a tension adjusting jig between pulleys.

  As shown in FIG. 1, the tension adjusting jig 315 between the pulleys is fitted to the pulley on one side and pressed, and the first fitting member 312 is fitted to the other pulley and separated from the pulley on the one side. It is comprised from the 2nd fitting member 313 pressed in the direction made to make it, and the support member 314 which supports these fitting members.

  As shown in FIG. 2, the fitting members 312 and 313 include a fitting surface 201 that fits on a pulley, a fitting portion 202 that forms a fitting surface 201 on an end surface, and a fitting surface of the fitting portion 202. The male screw portion 203 is fixed to the opposite side of the screw 201 and the nut 204 is screwed into the male screw portion.

  The fitting surface 201 is made of the same material as the belt. Accordingly, there is no possibility that the fitting surface 201 damages the pulley. The fitting surface 201 may be a flexible material such as rubber or polyurethane, and is not limited to the same material as the belt.

  Further, since the concave portion of the fitting surface 201 has the same inner diameter as the pulley outer diameter, the fitting surface 201 does not adhere to the pulley and does not shift. The fitting surface 201 does not have to be displaced from the pulley, and the inner diameter of the fitting surface 201 is not limited to the same as the pulley outer diameter.

  As shown in FIG. 3, the support member is composed of a support member main body 306 made of L-shaped steel, and integrally includes four side walls 301 to 304 having holes 305 at both ends and inside.

  Since it is L-shaped steel, it is small and light and strong. As long as the support member is strong, it may be shaped steel of other shapes such as Z-shaped steel, and is not limited to L-shaped steel.

  As shown in FIGS. 1 and 3, the left end side wall 301 of the support member 314 and the hole 305 in the inner side wall 302 support the male screw portion 203 of the inserted first fitting member 312. Similarly, the second fitting member 313 is supported by the right end side wall 304 and the inner side wall 303 of the support member 314. The hole 305 on the side wall only needs to be able to support the male screw portion, and the position of the side wall 301 is not limited to the left end, and the position of the side wall 304 is not limited to the right end. Further, the number of side walls is not limited to two on one side.

  As shown in FIG. 1, the first fitting member 312 is formed by screwing a nut 204 on the fitting member side (between the side wall 301 and the side wall 302) of the inner side wall 302 to the male screw portion 203. The support member 314 is attached. By manually rotating the nut 204 with a tool, the first fitting member 312 can be fed out or accommodated. The same applies to the second fitting member 313.

  As shown in FIG. 4, a tension adjusting jig 315 is attached between the pulleys 102 and 109. Then, the interval between the pulleys 102 and 109 can be increased by manually rotating the nut 204 with a tool. Thus, the tension between the pulleys can be adjusted manually without requiring a special device such as a compressor.

  Thus, the tension adjusting jig between the pulleys is composed of the fitting members 312, 313 and the L-shaped steel support member 314, and is small and light and excellent in portability. It is only necessary to manually rotate the nut 204 with a tool, and no special device such as a compressor is required. The fitting surface 201 is made of the same material as the belt, and there is no possibility of damaging the pulley. Further, if the concave portion of the fitting surface 201 is formed so as to have the same inner diameter as the pulley outer diameter, the fitting surface 201 can be brought into close contact with the pulley to prevent displacement.

  FIG. 5 is an exploded view illustrating another configuration of the support member. A support member 320 shown in FIG. 5 includes a support member main body 309, a first support member attachment portion 310 having a plurality of side walls 301 and 302, and a second support member attachment portion having a plurality of side walls 303 and 304 as well. 311.

  This support member main body 309 is made of L-shaped steel in which a plurality of holes 307a are arranged in four rows in the short direction and six rows in the longitudinal direction. On the other hand, the support member appendages 310 and 311 are provided with four holes 307b in the short direction at positions facing the holes 307a of the support member main body. Then, the four holes 307 b of the support member attachment portions 310 and 311 are aligned with the holes 307 a of the support member main body 309 and fixed with bolts 308 and nuts 204. According to such a structure, since the support member 320 can be separated into the support member main body 309 and the support member attachment portions 310 and 311, the support member 320 can be shortened, thereby increasing portability. The number of holes is not limited to four as long as it can be fixed with bolts and nuts.

  Since there are six rows of holes in the longitudinal direction, the support member attachment portions 310 and 311 can be fixed at different positions with respect to the support member main body 309 by changing the positions of the holes to be fixed to the support member attachment portions 310 and 311 ( Position adjustment is possible). Thereby, the length of the support member 320 can be changed in six steps. In addition, the length of the supporting member 320 should just be changed and the hole of a longitudinal direction is not restricted to 6 rows.

  The first support member attachment portion 310 has two side walls 301 and 302 that stand integrally on an attachment portion main body 310a made of L-shaped steel, and has a hole 305 through which the male screw portion 203 is inserted. . Similarly, the second support member attachment portion 311 has two side walls 303 and 304 integrally standing on an attachment portion main body 311b made of L-shaped steel, and has a hole 305 through which the male screw portion is inserted. Yes. For the reasons described above, the type of shape steel, the position and number of side walls, and the number of holes in the short direction are not limited.

  Next, a method for adjusting the tension between the pulleys according to the embodiment of the present invention will be described.

  FIG. 6 is a tension adjustment flowchart between pulleys, FIG. 7 is a front view of the motor, FIG. 8 is a right side view of the motor, and FIG. 9 is a plan view of the motor.

  As shown in FIGS. 7 to 9, the base 106 of the motor 105 is provided with two slits 317 for inserting the fixing bolt 316 of the motor 105 in the moving direction of the motor 105. The fixing bolt 316 is inserted from the slit 317 into the hole of the stopper 318 on the back side of the gantry 106 and screwed into the nut 319. The position adjusting bolt 107 of the motor 105 on the side surface of the gantry 106 is screwed with the stopper 318.

  First, the tension adjusting jig 315 is attached between the outer pulleys 109a in a state where the belt is hung between the parallel three-stage pulleys 109 (see FIG. 4) (step 401). Here, it is necessary to move the motor 105 in parallel, but the pulley side is rotated by the tension adjusting jig 315, and then the motor side is rotated by the position adjusting bolt 107 (or alternately). To repeat). At this time, the fact that the centering adjustment jig as a force point is attached between the outer pulley 109a away from the position adjustment bolt 107 which is a fulcrum increases the moment for rotating the motor 105 by the position adjustment bolt 107. Because. Also, if the tension adjustment jig 315 is attached to the pulley inside the belt, the position adjustment bolt 107 also floats when the tension adjustment jig 315 separates the pulleys from each other, so the motor 105 is slightly displaced in the axial direction. This is because the centering is crazy.

  The pulley is not limited to a parallel three-stage rack, and may be a single-stage rack or a parallel multi-stage rack other than a three-stage rack. Further, in the case of parallel multi-stage hanging, a tension adjusting jig may be attached between the inner pulleys as long as the motor 105 can be rotationally moved by the tension adjusting jig 315.

  Next, the fixing bolt 316 of the motor 105 having a pulley is loosened (step 402). This is to allow the motor 105 to move.

  Next, the nut of the tension adjusting jig is rotated to move the first fitting member and the second fitting member in the direction of widening the pulley interval (step 403).

  Further, the position adjusting bolt 107 is rotated to move the motor 105 in the direction of widening the pulley interval (step 404).

  Next, the slack of the belt 104 and the centering between the pulleys are confirmed (step 405). When the tension of the belt 104 is insufficient or the pulley shaft is not parallel, steps 403 and 404 are repeated.

  When the slack and centering of the belt 104 is completed (YES in step 405), the fixing bolt 316 of the motor 105 is tightened to fix the position of the motor 105 (step 406). Then, the tension adjusting jig is removed from between the pulleys (step 407).

  Thus, if a tension adjusting jig is attached between the outer pulleys, the tension can be adjusted easily and quickly without removing the belt.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above embodiment, the position of the fitting members 312 and 313 on both sides is individually adjusted, but instead of the support member 314, a turnbuckle having reverse screws at both ends or a pantograph jack is used. Thus, the feeding amount of the fitting members 312 and 313 may be adjusted.

  Using the tension adjustment jig 315 having the support member 320 shown in FIG. 5, the tension adjustment jig can be adapted to a pulley interval of 550 to 800 mm by changing the position of the hole 307a for fixing the support member appendages 310 and 311. The tool 315 was prototyped with L-shaped steel, and the tension between the pulleys of the actual distribution substation cooling equipment was adjusted. This pulley tension adjusting jig was small and light and excellent in portability. When this pulley tension adjusting jig was used, the tension between the pulleys could be adjusted easily and quickly without removing the belt.

101 Substation cooling fan for power distribution 102 Pulley 103 Cooling fan shaft 104 Belt 105 Motor 106 Mounting base 107 Position adjustment bolt 108 Motor shaft 109 Parallel three-stage mounting pulley 109a Outer pulley 201 Fitting surface 202 Fitting portion 203 Male screw portion 204 Nut 301-304 Side wall 305 Hole 306 Support member body 307a Hole 307b Hole 308 Bolt 309 Support member body 310 First support member attachment part 310a Attachment part body 311 Second support member attachment part 311a Attachment part body 312 First Fitting member 313 Second fitting member 314 Support member 315 Tension adjusting jig 316 Fixing bolt 317 Slit 318 Fastener 319 Nut 320 Support member

Claims (6)

A first fitting member that fits and presses a pulley on one side with respect to a pair of pulleys on which a belt is stretched, and a direction that is fitted to the pulley on the other side and separated from the pulley on the one side A second fitting member that presses the first fitting member, and a support member that supports the first and second fitting members,
The first and second fitting members include a fitting surface that is fitted to a pulley, a fitting portion that forms the fitting surface on an end surface, and a side opposite to the fitting surface of the fitting portion. A fixed male screw part, and a nut screwed into the male screw part,
The support member has a support member main body, a plurality of side walls orthogonal to the axial direction of the male screw portion and arranged in the axial direction, and holes provided in the side walls,
The male screw portions of the first and second fitting members are inserted from the holes in the side walls on the outside of the support member into the holes on the side walls on the inside, and on the fitting member side of the side walls on the inside A tension adjusting jig between pulleys, wherein the amount of feeding of the fitting member is adjusted by rotating the nut. The support member includes a support member main body, a first support member appendage having a plurality of the side walls, and a second support member appendage having a plurality of the side walls,
The support member body has a plurality of holes arranged in the longitudinal direction,
The support member appendage has a hole facing the hole of the support member body,
By fixing the holes of the first and second support member attachment portions and the holes of the support member main body with bolts and nuts, the first and second support member attachment portions are different from the support member main body. The tension adjusting jig between pulleys according to claim 1, wherein the jig can be fixed at a position.   The tension adjusting jig between pulleys according to claim 1 or 2, wherein the fitting surface of the fitting member is made of a flexible material.   The tension adjusting jig between pulleys according to any one of claims 1 to 3, wherein the support member main body is L-shaped steel.   The tension adjusting jig according to any one of claims 1 to 4 is attached between the pulleys in a state where a belt is stretched between the pulleys, and a fixing screw of a motor having a pulley on one side is loosened, The nut of the tension adjusting jig is rotated to move the first fitting member and the second fitting member in a direction to widen the pulley interval, and the position adjustment bolt of the motor is rotated to widen the pulley interval. The motor is moved in the direction, and after checking the slack of the belt and the centering between the pulleys, tighten the fixing screw of the motor and remove the tension adjusting jig from between the pulleys. Tension adjustment method.   6. The method for adjusting tension between pulleys according to claim 5, wherein a tension adjusting jig is attached between the outer pulleys in the case of a parallel multi-stage pulley.