JP2016148423A - V-belt replacement tool and auxiliary tool thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a V-belt replacement tool suitable for V-belt replacement in a fan of an air conditioner and the like or in water supply/discharge equipment, and an auxiliary tool thereof.SOLUTION: A V-shaped replacement tool 1 is used in replacing a V-belt B for transmitting power between two rotational shafts, and includes a V-belt pressing mechanism 2 and pulley rotation mechanism 3 shown in Fig.1. The V-belt pressing mechanism 2 includes a pressing part 20 pressing the belt B from the outer peripheral side of the pulley P to the inner peripheral side thereof, and a receiving part 21 receiving pressing force of the pressing part 20 through the belt B and the rim of the pulley P, and a U-shaped part 22 attaching the pressing part 20 and the receiving part 21. The pulley rotation mechanism 3 is attached to the U-shaped 22, and includes a main handle 30 for rotating the pulley P and an auxiliary handle 31 detachably attached to the U-shaped part 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a V-belt exchanging device used when exchanging a V-belt that transmits power such as an electric motor, and an auxiliary device thereof.

Air conditioning in buildings in commercial facilities such as office buildings and station buildings, and other facilities is often controlled by the entire building by air conditioning equipment provided in the building.
This air conditioning equipment is provided with an “air supply fan”, an “exhaust fan”, and the like, and these are driven by transmitting the power of the electric motor via a V-belt.
In the water supply / drainage equipment in the facility, power is transmitted to the pump through a V-belt.
Since these V-belts are consumables, they need to be replaced about once a year.
The replacement work of the V-belt is performed in the process of removing the worn V-belt from the pulley and attaching a new V-belt. The replacement work has been conventionally performed manually.

However, since tension is applied to the V-belt, it is easy for accidents such as fingers to be caught between the V-belt and the pulley or clothes to be caught in the manual operation of removing and attaching the belt. It was.
In addition, unnecessarily force is applied during manual work, and the worker collapses and falls, and a serious accident occurs due to unexpected start-up of the motor and operation of the load side equipment (static pressure). There is a fear, and it has been desired to develop a device that can safely and easily replace the V-belt.

  As an example of the instrument, Patent Document 1 discloses a “belt mounting jig”. However, as described in paragraph “0007” of the specification of the same document, the “belt mounting jig” “is easily applied to the belt even when there is not enough space on the side of the pulley. The problem and the means for solving the problem are not suitable for exchanging the V-belt of a large fan such as an air conditioner or an exhaust fan.

JP 2012-21642 A

  Therefore, an object of the present invention is to provide a V-belt exchanging device suitable for exchanging a V-belt of a fan such as an air conditioner or an exhaust fan or a water supply / drainage device, and an auxiliary device thereof.

The present invention is a belt exchanging device used when exchanging a V-belt that transmits power between at least two rotating shafts.
This V-belt exchange device has a V-belt pressing mechanism provided with a pressing portion that presses the V-belt fitted in a V-groove of a pulley fixed to the rotating shaft from the outer peripheral side to the inner peripheral side of the pulley. And a pulley rotating mechanism having a main handle positioned along the diameter direction of the pulley in order to rotate the pulley on which the V belt is pressed by the V belt pressing mechanism.
The V-belt pressing mechanism includes a receiving portion that receives the pressing force of the pressing portion via the V belt and the pulley rim, and a laterally open U-shaped portion that attaches the receiving portion and the pressing portion facing each other. .
The pulley rotating mechanism is attached to the main handle attached to the laterally-opening U-shaped portion so as to be substantially perpendicular to the longitudinal direction of the handle and detachably attached to the laterally-opening U-shaped portion. A handle is provided.
The pressing portion includes a pressing handle and a pressing tip provided at a tip of the pressing handle and having a ring surface in contact with the V-belt and rotating the pressing handle.
The receiving portion includes a top surface and an inclined surface adjacent to the top surface, and each includes a contact portion that is deformed so as to contact the rim by the pressing force of the pressing portion.

The auxiliary device for the V-belt exchange device according to the present invention is used when the V-belt is removed from the pulley after the V-belt is pressed against the V-groove of the pulley by the V-belt pressing mechanism of the V-belt exchange device. Is.
This auxiliary device is formed at the tip that contacts the pulley, and has a hook-like portion provided with a substantially L-shaped piece, and a rod-like shape that stands up from the hook-like portion and is positioned so as to substantially intersect the V-belt. And is bent from the rod-shaped portion and inclined so as to be substantially parallel to the vertical side of the substantially L-shaped piece of the flange-shaped portion, and the V-belt is removed from the V-groove using the flange-shaped portion as a fulcrum. A handle portion that can move the rod-like portion is provided.

In the V-belt exchange device of the present invention, a V-belt provided with a pressing portion that presses the V-belt fitted in the V-groove of the pulley fixed to the rotating shaft from the outer peripheral side to the inner peripheral side of the pulley. Since the pressing mechanism is provided, it is possible to provide a V-belt exchanging device suitable for exchanging the V-belt of an air conditioner, an exhaust fan, or a water supply / drainage device where a space for exchanging the V-belt is assumed.
In addition, in order to rotate the pulley on which the V belt is pressed by the V belt pressing mechanism, a pulley rotating mechanism having a main handle positioned along the diameter direction of the pulley is provided. It is possible to provide a V-belt exchange device that can apply a moment of force to the rotating shaft.
The pressing portion includes a pressing handle, a pressing tip provided at a tip of the pressing handle, and provided with a ring surface in contact with the V-belt and rotating the pressing handle. The receiving portion that receives the pressing force of the pressing portion via the V belt and the pulley rim includes a contact portion that is deformed so as to contact the rim by the pressing force of the pressing portion. Is firmly fixed to the pulley, and by rotating the pulley using the main handle, it is possible to provide a V-belt exchanging device suitable for exchanging the belt of a large fan such as an air conditioner or an exhaust fan.
In addition, since the main handle is provided with a sub handle that is detachably attached to the laterally open U-shaped portion so as to be substantially orthogonal to the longitudinal direction of the handle, the main handle or Use only the secondary handle,
The main handle and the sub handle can be used simultaneously.
Further, depending on the space for replacing the V-belt, a necessary force can be applied to the pulley, such as the ability to remove the auxiliary handle and use only the main handle.

The auxiliary device according to the present invention is formed at a tip that contacts the pulley, and is substantially parallel to a hook-shaped portion having a substantially L-shaped piece and a vertical piece of the substantially L-shaped piece of the hook-shaped portion. Since the handle portion is inclined, when the hook-like portion is inserted from the V-belt side toward the pulley, the contact state between the hook-like portion and the pulley can be grasped by the position of the handle portion, and Since the hook-shaped portion and the pulley can be brought into surface contact with each other, it is possible to prevent the pulley from being rimmed.
In addition, since the bar-shaped portion can be moved by the handle portion so as to remove the V-belt from the V-groove using the hook-shaped portion as a fulcrum, the V-belt can be easily removed from the V-groove by the rod-shaped portion. be able to.

FIG. 1 is a perspective view of a V-belt exchange device. FIG. 2 is a front view of a main part when the V-belt exchange device is fixed to a pulley. FIG. 3 is a plan view of an auxiliary device of the V-belt exchange device. FIG. 4 is an explanatory view for explaining a method of using the belt exchange device and the auxiliary device when the V-belt is removed. FIG. 5 is an explanatory diagram of the same. FIG. 6 is an explanatory view of the same. FIG. 7 is an explanatory view of the same. FIG. 8 is an explanatory diagram for explaining a method of using the belt exchange device when a V-belt is attached. FIG. 9 is an explanatory diagram of the same.

  The V-belt exchanging device 1 of the present invention (hereinafter also simply referred to as exchanging device 1) is a V-belt B (see FIGS. 2 and 4-9, hereinafter referred to as belt B) that transmits power between at least two rotating shafts. 1), and includes a V-belt pressing mechanism 2 and a pulley rotating mechanism 3 as shown in FIG.

  As shown in FIGS. 1 and 2, the V-belt pressing mechanism 2 moves the belt B fitted in the V-groove P1 of the pulley P fixed to the rotating shaft from the outer peripheral side of the pulley P to the inner peripheral side. A pressing portion 20 that is pressed toward the surface, a receiving portion 21 that receives the pressing force of the pressing portion 20 via the belt B and the rim R of the pulley P, and the receiving portion 21 and the pressing portion 20 that are opposed to each other. A laterally open U-shaped portion 22 (hereinafter also simply referred to as a U-shaped portion 22) is provided.

  As shown in FIGS. 1 and 2, the pulley rotating mechanism 3 is positioned along the diameter direction of the pulley P in order to rotate the pulley P against which the belt B is pressed. A main handle 30 attached to the portion 22 and a sub handle 31 that is detachably attached to the U-shaped portion 22 so as to be substantially orthogonal to the longitudinal direction of the main handle 30 are provided.

  The belt B that is the target of the exchange device 1 mainly transmits power between two rotating shafts, but is not limited thereto, and transmits power between three or more rotating shafts. It may be.

  The pressing portion 20 is provided at the distal end of the pressing handle 202 and a pressing handle 202 having a female screw portion 200 formed on the U-shaped portion 22, a male screw portion 201 screwed to the female screw portion 200. And a ring surface 203 in contact with the belt B, and a pressing tip 204 for rotating the pressing handle 202.

  The pressing handle 202 is provided near the free end of the U-shaped portion 22. This is because the U-shaped portion 22 has a deep pocket in consideration of a case where a plurality of belts B are attached to the pulley P in parallel, and a space for swallowing the rim R of the pulley P is formed. However, even when the U-shaped portion 2 swallows the rim R, the belt B can be pressed.

  The ring surface 203 rotating around the collar securely fixes the belt B together with the receiving portion 21 while preventing the belt B from being damaged when the tip of the pressing handle 202 is crimped to the belt B.

The receiving portion 21 is provided near the other free end of the U-shaped portion 22 so as to face the pressing tip portion 204, and is a top that contacts the rim R of the pulley P as shown in FIG. A contact portion 212 is formed from the surface 210 and inclined surfaces 211 and 211 adjacent to the left and right of the top surface 210. The abutting portion 212 is made of an elastic body such as rubber and is deformed so as to abut against the inner peripheral surface of the rim R by the pressing force of the pressing portion 20 as shown in FIG. Yes.
Therefore, the U-shaped portion 22 is firmly fixed to the pulley P, and the pulley rotating mechanism 3 can be easily operated without damaging the belt B.

  The main handle 30 is provided at the proximal end portion of the U-shaped portion 22 so as to be positioned on an extension line of the diameter of the pulley P, and the sub handle 31 is screwed to the side end portion of the U-shaped portion 22. It is worn.

  In this embodiment, the main handle 30 and the pressing handle 202 are separate. However, the main handle 30 is integrated with the pressing handle 202 to add the function of the main handle 30 to the pressing handle 202. May be.

Next, a configuration example of an auxiliary device of the belt exchange device will be described.
As shown in FIG. 3, the auxiliary device 4 is formed at the tip that contacts the pulley P, and has a hook-like portion 40 provided with a substantially L-shaped piece, and rises from the hook-like portion 40, and the V belt B A rod-like portion 41 positioned so as to substantially intersect with the rod-like portion 41, and is bent from the rod-like portion 41 so as to be inclined so as to be substantially parallel to the vertical side 400 of the substantially L-shaped piece of the flange-like portion 40. With the portion 40 as a fulcrum, a handle portion 42 that can move the rod-like portion 41 so as to remove the V-belt B from the V-groove P1 is provided.

The hook-shaped portion 40 is formed in a substantially L-shaped piece from the vertical side 400 and the horizontal side 401, and is locked to the rim R of the pulley P at the intersection of the vertical side 400 and the horizontal side 401. As described above, the handle portion 42 can be moved.
In addition, you may make it cover the said collar-shaped part 40 with an elastic material, In that case, the said auxiliary instrument 4 can be prevented from slipping with the said pulley P, and the failure | damage of the said pulley P can be prevented. .

  The rod-like portion 41 is disposed at a position substantially intersecting the belt B in a state where the hook-like portion 40 is locked to the pulley P, and the belt B is removed from the V-groove P1 by moving the handle portion 42. Act on.

A method for using the belt exchange device configured as described above and its auxiliary device will be described.
In this method of use, it is assumed that three belts B are placed in parallel between a pulley P of a large fan such as an air conditioner and a pulley P of an electric motor.

Removal procedure of V-belt using belt exchange device and auxiliary device (1) Set of exchange device 1 on outermost belt B As shown in FIG. The pulley P is swallowed by the U-shaped portion 22 until the belt B to be removed can be sandwiched between the receiving portion 21 and the pressing handle 202.
Next, the pressing handle 202 is rotated to press the ring surface 203 against the belt B, and the exchange device 1 is fixed to the pulley P and set so as to sandwich the belt B together with the receiving portion 21.

(2) Set of auxiliary device 4 As shown in FIG. 5, the hook 40 and rod 41 of the auxiliary device 4 are inserted between the belts B and B, and the hook 40 is locked to the rim R of the pulley P or the like. Then, the auxiliary device 4 is set.
Next, when the handle portion 42 is rotated and moved away from the belt B with the collar portion 40 as a fulcrum, the belt B is shifted by the rod portion 41 so as to be lifted from the V groove P1.
Subsequently, as shown in FIG. 6, while the main handle 30 is gripped and the pulley P is rotated, the handle portion 42 is moved to remove the belt B from the pulley P.
Thereafter, the pressing handle 202 of the replacement device 1 is loosened to remove the replacement device 1 from the pulley P, and the belt B is also removed from the pulley P of an air conditioner or the like.

  The middle belt B is removed in the same procedure.

(3) Removal of innermost V-belt Remove the auxiliary handle 31 from the U-shaped portion 22 and insert the U-shaped portion 22 into the rim R of the pulley P from the inside of the pulley P as shown in FIG. The belt B is sandwiched between the pressing handle 202 and the receiving portion 21 while the U-shaped portion 22 is supported by the handle 30.
Next, the pressing handle 202 is continuously rotated to fix the U-shaped portion 22 to the pulley P, and then the belt B is removed by the same procedure using the auxiliary device 4.

Installation procedure of V-belt using belt changer (1) Set of changer 1 to V-belt After a new belt B is passed over a pulley P such as an air conditioner, a pulley P such as an electric motor as shown in FIG. The U-shaped portion 22 is fixed to the replacement device 1.
That is, the belt B is engaged with the V groove P1 of the pulley P such as an electric motor, and the belt B to be attached can be sandwiched between the pressing handle 202 and the receiving portion 21 while supporting the replacement device 1 with the auxiliary handle 31. Pull the pulley P into the U-shaped portion 22 to the position.
Next, the pressing handle 202 is rotated so that the U-shaped portion 22 is attached to the belt B and fixed to the pulley P.
(2) Attaching the V-belt Then, when the main bundle 30 is rotated, the belt B is sequentially fitted into the V-groove P1.
The innermost belt B is attached in the same procedure after the auxiliary handle 31 is removed from the U-shaped portion 22.
Similarly, after the new belt B is passed over the pulley P of the air conditioner or the like, the middle belt B is also engaged with the belt B in the V groove P1 of the pulley P of the electric motor or the like, and then the V of the pulley P is subjected to the same procedure. Fit into the groove P1.
In this case, it is necessary to apply a strong torque to the pulley P, but the auxiliary handle 31 can be used together with the main bundle 30 as shown in FIG.

The effects of the belt exchange device configured as described above and its auxiliary devices are as follows.
Effects of Belt Exchanger (1) Since the operator can work without contacting the belt B, the belt B such as a fan such as an air conditioner or an exhaust fan or a water supply / drainage device can be safely and easily attached. Can be exchanged.
(2) Since the receiving portion 21 receives the pressing force of the pressing portion 20 and is deformed so as to come into contact with the inner peripheral surface of the rim R of the pulley P, the exchange device 1 is firmly It is fixed to the pulley P. Therefore, the pulley rotation mechanism 3 can be easily operated, and the belt B and the pulley P are not easily damaged.
(3) The pressing tip portion 204 of the pressing portion 20 includes the ring surface 203 that contacts the V-belt B, and the pressing handle 202 can be turned around, so that the belt B is not damaged.
(4) Even if an inclination is formed on the inner peripheral surface of the rim R of the pulley P, the receiving portion 21 is flexibly deformed so as to correspond to the inclination, and the exchange device 1 is firmly fixed to the pulley P. The
(5) The U-shaped portion 22 can sandwich an arbitrary belt B of a plurality of parallel belts B, and the pressing handle 202 and the receiving portion 21 are respectively free ends of the U-shaped portion. Since it is provided in the vicinity, the exchange device 1 is configured not to contact a device such as an electric motor, and the device can be prevented from being damaged.
(6) Since the auxiliary handle 31 is detachable, the replacement device 1 can be set even when the gap between the main body of the motor and the pulley P is narrow.
(7) According to the tension of the V-belt B, the pulley P can be rotated only by the main handle 30, or the pulley P can be rotated by the main handle 30 and the sub handle 31. In this case, a large torque can be applied to the pulley P by a moment due to a force acting on the main handle 30.

Function and effect of the auxiliary device (8) Since the hook 40 is provided at the tip of the auxiliary device 4, unlike the pointed driver, the tip is easy to be engaged with the pulley P and is difficult to come off during the belt B removal operation. It has become.
(9) If the handle is straight from the handle to the tip, such as a screwdriver, the tip contacts the pulley P and slips.
In this auxiliary instrument 4, a hook-like portion 40 is provided at the tip without making it straight from the handle portion 42 to the tip to make it difficult to slide.
(10) “Leverage principle” is used in which the handle portion 42 is moved with the hook-like portion 40 locked to the pulley P as a fulcrum, and the force for removing the belt B is applied to the rod-like portion 41. Therefore, a large force can be exerted with a small force, the slip due to the point contact is eliminated, and the possibility that the pulley P is damaged due to the point contact is eliminated.

  The present invention is not limited to the above-described embodiments, and many modifications can be made by those having ordinary knowledge in the art within the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 V belt exchange tool 2 V belt pressing mechanism 20 Pressing part 21 Receiving part 22 Side-opening U-shaped part 200 Female thread part 201 Male thread part 202 Pressing handle 203 Ring surface 204 Pressing tip part

210 Top surface 211, 211 Inclined surface 212 Contact portion

3 Pulley rotating mechanism 30 Main handle 31 Sub handle

4 Auxiliary device 40 A bowl-shaped portion 41 A rod-shaped portion 42 A handle portion

400 Vertical side 401 Horizontal side

The present invention is a belt exchanging device used when exchanging a V-belt that transmits power between at least two rotating shafts.
This V-belt exchange device has a V-belt pressing mechanism provided with a pressing portion that presses the V-belt fitted in a V-groove of a pulley fixed to the rotating shaft from the outer peripheral side to the inner peripheral side of the pulley. And a pulley rotating mechanism having a main handle positioned along the diameter direction of the pulley in order to rotate the pulley on which the V belt is pressed by the V belt pressing mechanism.
The V-belt pressing mechanism includes a receiving portion that receives the pressing force of the pressing portion via the V belt and the pulley rim, and a laterally open U-shaped portion that attaches the receiving portion and the pressing portion facing each other. The
The pressing portion includes a pressing handle and a pressing tip provided at a tip of the pressing handle and having a ring surface in contact with the V-belt and rotating the pressing handle.
The receiving portion includes a top surface and an inclined surface adjacent to the top surface, and each includes a contact portion that is deformed so as to contact the rim by the pressing force of the pressing portion.

The V-belt exchange device of the present invention includes an auxiliary device. This auxiliary device is used when the V belt is removed from the pulley after the V belt is pressed against the V groove of the pulley by the V belt pressing mechanism of the V belt exchange device.
This auxiliary device is formed at the tip that contacts the pulley, and has a hook-like portion provided with a substantially L-shaped piece, and a rod-like shape that stands up from the hook-like portion and is positioned so as to substantially intersect the V-belt. And is bent from the rod-shaped portion and inclined so as to be substantially parallel to the vertical side of the substantially L-shaped piece of the flange-shaped portion, and the V-belt is removed from the V-groove using the flange-shaped portion as a fulcrum. A handle portion that can move the rod-like portion is provided.

The auxiliary device according to the present invention is formed at a tip that contacts the pulley, and is substantially parallel to a hook-shaped portion having a substantially L-shaped piece and a vertical piece of the substantially L-shaped piece of the hook-shaped portion. Since the handle portion is inclined, when the hook-like portion is inserted from the V-belt side toward the pulley, the contact state between the hook-like portion and the pulley can be grasped by the position of the handle portion, and and cut by causing the surface contacting the a barb pulley.
In addition, since the bar-shaped portion can be moved by the handle portion so as to remove the V-belt from the V-groove using the hook-shaped portion as a fulcrum, the V-belt can be easily removed from the V-groove by the rod-shaped portion. be able to.

Claims (2)

In a belt exchanging device used when exchanging a V-belt that transmits power between at least two rotating shafts,
The belt exchanging device includes a V-belt pressing mechanism including a pressing portion that presses the V-belt fitted in a V-groove of a pulley fixed to the rotating shaft from the outer peripheral side to the inner peripheral side of the pulley. A pulley rotating mechanism having a main handle positioned along the diameter direction of the pulley to rotate the pulley on which the V belt is pressed by the V belt pressing mechanism,
The V-belt pressing mechanism includes a receiving portion that receives the pressing force of the pressing portion via the V belt and the pulley rim, and a laterally open U-shaped portion that attaches the receiving portion and the pressing portion facing each other. ,
The pulley rotating mechanism is a sub-handle attached to the main handle attached to the side-opening U-shaped portion so as to be substantially perpendicular to the longitudinal direction of the handle and to be detachably attached to the side-opening U-shaped portion. With
The pressing portion includes a pressing handle and a pressing tip provided at a tip of the pressing handle and having a ring surface in contact with the V-belt and rotating the pressing handle.
The belt replacement, wherein the receiving portion includes a top surface and an inclined surface adjacent to the top surface, each of which includes a contact portion that is deformed so as to contact the rim by a pressing force of the pressing portion. Instruments. An assisting device for a belt exchanging device used for removing the V belt from the pulley after the V belt is pressed against the V groove of the pulley by the V belt pressing mechanism of the belt exchanging device according to claim 1. ,
A hook-shaped portion formed at the tip that contacts the pulley and having a substantially L-shaped piece, a rod-shaped portion that stands up from the hook-shaped portion and is positioned so as to substantially intersect the V-belt, and from the rod-shaped portion The rod-shaped portion is bent and inclined so as to be substantially parallel to the vertical side of the substantially L-shaped piece of the hook-shaped portion, and the rod-shaped portion is moved so as to remove the V-belt from the V-groove using the hook-shaped portion as a fulcrum. An assisting device for a belt exchanging device, comprising a handle portion that can be moved.

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