JP2015206421A - Pulley shaft alignment jig for power transmission and pulley shaft alignment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pulley shaft alignment jig for a power transmission device in which a belt extends between one pulley and the other pulley to transmit power, and a pulley shaft alignment device in which the shaft alignment can be easily carried out.SOLUTION: The jig 1 of this invention comprises: a first member 4 having a fixing part 4m for one pulley 2; second members 6, 7 having a fixing part 7m for the other pulley 3; an intermediate member 5 connected to each of the first member 4 and the second members 6, 7 through hinges 8, 9 in such a way that they can be bent; a first bending angle indicating part 7A for showing a relative bending angle between the first member 4 and the intermediate member 5; and a second bending angle indicating part 8A for showing a relative bending angle between the second members 6, 7 and the intermediate member 5. The second members 6, 7 are connected to be rotatable around a rotating shaft 10.

Description

  The present invention relates to a pulley centering jig and a pulley centering device for a transmission device that transmits a power by suspending a belt between one pulley and the other pulley.

The transmission device that transmits the power by laying the belt between one pulley and the other pulley needs to be replaced because the pulley and the belt are worn as the operation time elapses. In addition, each shaft is provided with a bearing. However, if a malfunction occurs, replacement is required. After these replacements, it is necessary to center the one pulley and the other pulley.
Conventional centering work has been performed by a plurality of operators using a water thread or a straight scale to repeat temporary fixing and measurement several times based on experience. In addition, a laser beam is being used for centering without contacting the pulley.

Examples of using a jig include the following.
A straight ruler is attached to the pump pulley with a magnet, and centering is performed by eliminating a gap between the reference surface of the straight ruler and the pulley surface of the motor pulley (for example, Patent Document 1 ([0027], FIG. (See FIG. 2)).
In addition, using a jig with two arc portions on both ends of the linear connecting portion, fit the two arc portions into the grooves of a pair of pulleys, and visually confirm whether they are connected without any step. There is also one that adjusts (see, for example, Patent Document 2 ([0019], FIG. 3)).

  Furthermore, after attaching the alignment adjustment jig to each pulley, the radiator is moved to adjust the alignment. By this movement, the arm part of the alignment adjustment jig and the second holding part attached to the crank pulley of the radiator move relatively, and when the alignment is achieved, the tip of the arm part is notched in the second holding part. The tip of the arm part engages with the groove of the crank pulley. There is one that adjusts the alignment by confirming this engagement (see, for example, Patent Document 3 ([0026], FIG. 10)).

JP-A-11-63905 JP 2010-48267 A JP-A-8-285052

  However, in Patent Document 1, centering is adjusted so as to eliminate the gap, and it is necessary to adjust the gap between lines or surfaces, and adjustment is difficult. Further, since the jig is only attached to one pulley and is cantilevered, fixing of the jig increases in size.

  In Patent Document 2, since the jig is a rigid body, it is difficult to grasp the amount to be adjusted when adjusting the alignment. Further, in Patent Document 2, two arc portions are fitted in the grooves of the pair of pulleys, respectively, and it is visually confirmed whether or not they are connected without a step. It is difficult to grasp the fitted state of the two arc portions.

  Further, in Patent Document 3, the jig is not integrally formed, and it is necessary to connect the long hole and the screw, and the work of setting the jig on the pulley is complicated.

  The present invention has been made paying attention to such problems, and an object of the present invention is to provide a pulley centering jig and a pulley centering device for a transmission that can easily perform centering.

In order to solve the above-mentioned problems, a pulley centering jig of a transmission device according to the present invention is a pulley centering jig of a transmission device that transmits a power by spanning a belt between one pulley and the other pulley. ,
The jig is
A first member having an attachment to the one pulley;
A second member having an attachment to the other pulley;
An intermediate member connected to each of the first member and the second member so as to be bendable;
A first bending angle indicating section indicating a relative bending angle between the first member and the intermediate member; and a second bending angle indicating a relative bending angle between the second member and the intermediate member. And an instruction unit.
According to this feature, since the first member, the second member, and the intermediate member are integrated, the jig can be easily attached to the pulley. Further, since the bending angle is indicated, the centering operation can be easily realized.

Further, the first member and the intermediate member, and the second member and the intermediate member are connected to each other so as to be bent by a rotation shaft.
According to this feature, the bending angle can be easily obtained.

Furthermore, at least one member of the first member, the second member, and the intermediate member has two portions that can rotate around a rotation axis, and a relative rotation angle between the two portions. It is characterized by including a rotation angle indicating section.
According to this feature, the jig can be displaced in the axial direction and the tilt direction of the pair of pulleys, and the axial direction and the tilt direction of the pair of pulleys can be adjusted.

Furthermore, at least the first member and the second member are characterized by being movable with respect to the attached pulley by an external force greater than or equal to a predetermined value.
According to this feature, when the apparatus on which one or the other pulley is fixed for centering is moved, the jig smoothly follows and the centering workability is good.

Further, the first member, the second member, and the intermediate member that are connected to each other are characterized in that their cross-sectional shapes or outlines are substantially equal.
According to this feature, it is easy to grasp the relative bending angle by the outline, and the workability of adjusting the bending angle is good.

Further, in the pulley centering device using the pulley centering jig described above, the first and second bending angle instruction units output the first and second bending angle signals, and are based on the bending angle signal. It is characterized by having a display for displaying the amount to be adjusted.
According to this feature, since the amount to be adjusted is displayed on the display, adjustment workability can be performed without looking at the jig.

Here, the intermediate member in the present invention means a member that is connected to the first member and the second member so as to be bendable, and includes a plurality of members as well as a member that itself is composed of one member. For example, you may be comprised from the several member which can be bent mutually.
In addition, the bending means that the two members may be bent relatively, for example, one using a hinge or a universal joint, but does not exclude the one that is bent when the two members are bent. In the latter case, the bending angle can be obtained by a strain gauge or the like.

It is a perspective view which shows the pulley centering apparatus in Example 1,2. It is a perspective view which shows the pulley centering jig | tool of FIG. It is a top view which shows operation | movement of a pulley centering apparatus. It is a front view which shows operation | movement of a pulley centering apparatus. It is a perspective view which shows the arm attached to a motor side pulley.

  EMBODIMENT OF THE INVENTION The form for implementing the pulley centering jig and pulley centering apparatus of a transmission which concerns on this invention is demonstrated below based on an Example.

A pulley centering jig and a pulley centering device of a transmission according to a first embodiment will be described with reference to FIGS. 1 to 5.
The blower side pulley 2 is fixed to the rotating shaft of the blower 22. The blower 22 is fixed to a base (not shown) by a fixing tool. A motor-side pulley 3 is fixed to the rotating shaft of the motor 23. The electric motor 23 is fixed to a base (not shown) by a fixing tool. It is possible to finely adjust the position of the electric motor 23 forward and backward, left and right, and up and down by a well-known fixing means. The front-rear, left-right, and upper-lower directions correspond to the xyz directions in FIG.

  The pulley centering jig 1 includes a blower side arm 4 attached to one surface of the blower side pulley 2 by a magnet 4m (see FIG. 2), and a motor side arm attached to one surface of the motor side pulley 3 by a magnet 7m (see FIG. 2). 7. Displacement display arm 5 in which shafts 16 and 17 of arms 4 and 5 are flexibly connected to fan side arm 4 by hinge 8, and shafts 17 and 18 of arms 5 and 6 are connected to displacement display arm 5 by hinge 9. The rotary support arm 6 is connected to the electric motor side arm 7 around the shafts 18 and 19 by the rotary shaft 10 of the arms 6 and 7 so as to be bendable.

  Here, the blower side arm 4, the electric motor side arm 7, the shift display arm 5 and the rotation support arm 6 have substantially the same cross-sectional shape or outline. The displacement display arm 5 is exemplified by two plates, but from the viewpoint of strength, the two plates may be fixed to a long rectangular column having the same cross section as the other arms.

  Scales 8A and 9A (see FIG. 2) are attached to the outer peripheries of the hinges 8 and 9 so that the bending angles of the blower-side arm 4 and the shift display arm 5 and the bending angles of the motor-side arm 7 and the shift display arm 5 can be understood. ing. Further, the shafts 8B and 9B of the hinges 8 and 9 are respectively provided with volumes 11 and 12 that can extract the rotation angle as an electric signal. As shown in FIG. 2, the scale 8 </ b> A includes a triangular mark 8 </ b> A <b> 1 attached to the shaft 8 </ b> B of the hinge 8 and a triangular mark 8 </ b> A <b> 2 attached to the display arm 5. The same applies to the scale 9A.

  In addition, a scale 10A is attached so that the rotation angle between the rotation support arm 6 and the motor side arm 7 can be understood, and a volume 13 is provided that can extract the rotation angle as an electrical signal. As shown in FIG. 2, the scale 10 </ b> A is a member that rotates together with a linear mark 10 </ b> A <b> 1 attached to the member to be fixed and a rotating shaft 10 having a screw portion provided on the tip side of the motor-side arm 7. It is comprised from the attached | subjected mark 10A2. The electrical signals obtained from the volumes 11, 12, and 13 are transmitted from the transmission unit 14 to the display 15 by radio and displayed.

Next, a centering method will be described using a scale, and a method using a display will be described in Example 2 described later. Here, in the method using the scale, the volumes 11, 12, 13, the transmission unit 14, and the display 15 are not necessarily required.
[Method using scale]
In a state where the V-belt is not stretched between the blower-side pulley 2 and the motor-side pulley 3, the blower-side arm 4 is attached to the side surface of the blower-side pulley 2 with a magnet 4 m disposed on one side thereof. Next, the motor-side arm 7 is attached to the side surface of the motor-side pulley 3 with a magnet 7m arranged on one surface thereof.

  Here, since the motor 23 is smaller than the blower 22 and the movement associated with the adjustment is simple, the side surface of the blower side pulley 2 is used as a reference surface, but the side surface of the motor side pulley 3 may be used as a reference surface. Further, from the viewpoint of mounting stability, centering accuracy, and centering work efficiency, the position where the central axis 16 of the blower side arm 4 intersects the rotation axis of the blower side pulley 2 (not shown), similarly, the motor side arm 7 It is preferable to attach the arms 4 and 7 at positions where the central shaft 19 intersects with the rotation axis of the motor-side pulley 3 (not shown).

  In a state where both arms 4 and 7 are attached to both pulleys 2 and 3, the pulley centering jig 1 responds to the front-rear direction deviation and inclination between the side surface of the blower-side pulley 2 and the side surface of the motor-side pulley 3. As shown in FIGS. 1 and 3 to 4, the blower side arm 4 and the displacement display arm 5 are bent, the displacement display arm 5 and the rotation support arm 6 are bent, and the rotation support arm 6 and the electric motor. The side arm 7 is twisted in the axial direction.

  From this state (FIGS. 3A and 4A), the mark 10A1 and the mark 10A2 on the scale 10A are used to correct the substantially vertical inclination (twist) of the shaft 21 in the vertical direction of the pulley 3 on the motor side. (Fig. 2) is finely adjusted so that the vertical axis 20 of the blower side pulley 2 and the vertical axis 21 of the motor side pulley 3 are parallel to each other. .

  From this state (FIG. 3 (b), FIG. 4 (b)), in order to correct the inclination of the horizontal axis (axis parallel to the axis 19) of the motor side pulley 3, the marks 9A1 and 9A2 on the scale 9A (FIG. 2) so that the angle between the mark 8A1 and the mark 8A2 on the scale 8A matches the angle between the mark 8A1 and the mark 8A2, that is, the side surface of the blower side pulley 2 and the side surface of the motor side pulley 3 are parallel. The fixing means of the electric motor 23 is finely adjusted.

  From this state (FIG. 3 (c), FIG. 4 (c)), the marks 8A1, 9A1 and 8A2, 9A2 on the scales 8A, 9A are corrected in order to correct the longitudinal displacement of the motor side pulley 3 (FIG. 2). Are adjusted so that the rotation center plane of the blower side pulley 2 and the rotation center plane of the motor side pulley 3 are flush with each other. Here, the rotation center plane is a virtual plane located at the center of both side surfaces of the pulley and parallel to the both side surfaces.

  Since centering is thus completed, the electric motor 23 is fixed to the base in this state (FIGS. 3D and 4D). In other words, by adjusting the pulley centering jig 1 constituted by the link mechanism so as to be finally in a straight line, it is possible to adjust the displacement and inclination of the motor-side pulley 3 in the front-rear direction.

  Here, the centering is adjusted by moving the electric motor 23. Since this adjustment is usually a minute movement, it can be handled by the rotation of the hinges 8 and 9 and the rotary shaft 10. Even when the adjustment amount is a little large, the arms 4 and 7 are attached to the pulleys 2 and 3 by the magnets 4m and 7m.

  Further, in order to smoothly follow the pulley centering jig 1, as shown in FIG. 5, as a modified example of the motor side arm 7, a magnet 7A for attaching to the pulley 3 is provided at the bottom of the fixing member 7B. Therefore, it is preferable that the arm body 7D is slidably inserted into a bush 7C which is a sliding bearing provided on the fixing member 7B.

As described above, since the pulley centering jig 1 is integrally formed by the link mechanism, its handling is easy, and in particular, the operation of attaching to both the pulleys 2 and 3 is simple.
Further, since the pulley centering jig 1 is attached to both pulleys 2 and 3, the rigidity can be reduced as compared with a cantilever type attached to only one pulley, and the number of workers is one. Can also be centered.

  Moreover, it is preferable to adjust the pulley centering jig 1 so that it finally becomes a straight line. By doing so, rough adjustment can be realized by looking at the outline of each arm 4, 5, 6, 7 without using a scale. In this case, it is preferable that the cross-sectional shape or outline shape of each arm 4, 5, 6, 7 is the same. In the case of Example 1, the outlines of the arms 4, 5, 6, and 7 are substantially the same, and the cross-sectional shapes of the arms 4, 6, and 7 are substantially the same.

  Further, the adjustment order is corrected in the order of the vertical inclination (twist) of the vertical shaft 21 in the motor-side pulley 3, the inclination about the horizontal axis, and the deviation in the front-rear direction. It is possible to grasp what kind of adjustment is being performed on the way, and it is possible to reduce repetition of unnecessary adjustment work. The order of adjustment is not limited to the order described above. For example, the procedure of making the arms 4 and 7 shown in FIGS. 3 (c) and 4 (c) parallel is omitted, that is, FIG. 3 (b), Adjustment from the state of FIG. 4 (b) directly to FIG. 3 (d) and FIG. 4 (d) is preferable from the viewpoint of reducing the adjustment procedure.

Further, the scales 8A, 9A, and 10A are located between the pulleys 2 and 3, and generally there is no other member between the pulleys 2 and 3, so that the visibility is good.
Further, since the rotary shaft 10 is provided on the electric motor 23 side, that is, on the fine adjustment side during adjustment, the visibility of the scale 24 is good and when the rotary shaft 10 is rotated around the rotary shaft 10, a shift display arm is provided. There is no interference with other arms such as 5 and workability is good.

  In the above description, the correction of the inclination of the motor-side pulley 3 and the deviation in the front-rear direction has been described. However, due to the coarse adjustment, the pulleys 2 and 3 are parallel in the vertical direction (the shaft 20 and the shaft 21 are parallel). In some cases, the motor-side arm 7 may be connected to the displacement display arm 5 by a hinge, and the rotation support arm 6 and the rotation shaft 10 are unnecessary.

  Moreover, although it is not essential to attach the shaft 16 of the arm 4 to the side surface of the pulley 2 in parallel, the pulley centering jig 1 is finally linearized when centering by making it parallel. Therefore, the centering work is efficient.

  Further, in order to further improve the centering accuracy when the transmission device is used, after the above-described centering is completed, the centering adjustment may be performed again in the same manner in a state where the V-belt is passed.

  Next, a pulley centering device according to a second embodiment will be described with reference to FIGS. A description of the same contents as those in the first embodiment will be omitted. Since the configuration is the same as that of the first embodiment, the centering method will be described using a display device.

[Method using display]
The pulley centering jig 1 is set in an initial state so that it is not straight and twisted, that is, the marks on the scales 8A, 9A, and 10A are in agreement (step 1).
In this state, by pressing a zero adjustment button (not shown), the arithmetic unit of the transmission unit 14 initializes the values of the volumes 11, 12, and 13 to zero, and the relationship (values from the respective volumes 11, 12, and 13). And the relationship between zero and zero) are stored in the memory (step 2).

Thereafter, as described in the first embodiment, the arms 4 and 7 are attached to the pulleys 2 and 3, respectively (step 3).
In this state, the calculation unit of the transmission unit 14 receives signals from the volumes 11, 12, and 13, obtains a difference from the initial value, and transmits it to the display unit 15 (step 4).
The display 15 displays the angle to be corrected corresponding to each of the volumes 11, 12, and 13 (step 5).

  Thereafter, the operator finely adjusts the position of the electric motor 23 so that the angle to be corrected in the order of the volume 13, the volume 12, and the volume 11 becomes zero in the same manner as in the first embodiment (step 6).

  As described above, in addition to the operation and effect of the first embodiment, the operator only has to look at the indicator 15 nearby, so adjustment can be made without looking at the pulley centering jig 1 and the scales 8A, 9A, and 10A. Work can be performed smoothly.

  Further, in order to help the visual understanding, the shape of the pulley centering jig 1 as shown in any of FIGS. 1 to 4 is displayed on the display 15 and the vicinity of the hinges 8 and 9 and the rotary shaft 10 is displayed. It is advisable to display the angles to be adjusted respectively.

In addition, it is preferable that the amount of movement of the electric motor 23 up and down, left and right, and front and rear is displayed as follows in order to improve work efficiency.
The difference between the reference position in the direction in which the shaft 16 of the blower side arm 4 extends and the position of the rotational axis of the blower side pulley 2 when the blower side arm 4 is attached to the blower side pulley 2, and the motor side arm 7 The difference between the reference position in the extending direction of the shaft 19 of the motor-side arm 7 and the position of the rotating shaft of the motor-side pulley 3 when attached to the motor-side pulley 3 is determined in step 3 by an operator or a sensor (not shown). May be input to the input unit of the transmission unit 14.
In this way, since the displacement and inclination in the front-rear direction between the two pulleys can be quantitatively grasped, the transmission unit 14 adds to (or instead of) the above-mentioned angle to be corrected on the display unit 15 and the electric motor. It is possible to display the movement amount to be moved in the up / down, left / right and front / rear direction.

  In addition, when the display unit 15 is used, an error is added to the correction amount to be displayed due to an abnormality in the volumes 11, 12, 13, the transmission unit 14, and the display unit 15, so an error display function is added. It is preferable to do. In particular, when the value output from the volumes 11, 12, 13 exceeds a reference value due to, for example, an open failure or short circuit of the volume, for example, when an angle that should not be corrected due to an abnormality in the electric circuit is indicated, the volume 11 It is preferable to display an error when the difference between the angles to be corrected obtained from the volume 12 and the volume 12 exceeds a predetermined value.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

1 Pulley centering jig 2 Blower side pulley (one pulley)
3 Motor side pulley (the other pulley)
4 Blower side arm (first member)
5 Displacement display arm (intermediate member)
6 Rotation support arm (second member, second part)
7 Motor side arm (second member, first part)
8 Hinge 8A Scale (first bending angle indicator)
8B Rotating shaft 9 Hinge 9A Scale (second bending angle indicator)
9B Rotating shaft 10 Rotating shaft 10A Scale (Rotation angle instruction section)
11 Volume (first bending angle indicator)
12 volumes (second bending angle indicator)
13 Volume (Rotation angle indicator)
14 Transmitter 15 Display 16 Center Axis 17 Center Axis 18 Center Axis 19 Center Axis 20 Center Axis 21 Center Axis 22 Blower 23 Electric Motor

Claims (6)

A pulley centering jig of a transmission device for transmitting power by spanning a belt between one pulley and the other pulley,
The jig is
A first member having an attachment to the one pulley;
A second member having an attachment to the other pulley;
An intermediate member connected to each of the first member and the second member so as to be bendable;
A first bending angle indicating section indicating a relative bending angle between the first member and the intermediate member; and a second bending angle indicating a relative bending angle between the second member and the intermediate member. A pulley centering jig for a transmission device, characterized by comprising an instruction section.   2. The pulley of the transmission device according to claim 1, wherein the first member, the intermediate member, the second member, and the intermediate member are connected to each other so as to be bent by a rotation shaft. Centering jig.   At least one of the first member, the second member, and the intermediate member has two portions that can rotate around a rotation axis and a rotation that indicates a relative rotation angle between the two portions. The pulley centering jig for a transmission device according to claim 1 or 2, comprising an angle indicating portion.   4. The transmission pulley according to claim 1, wherein at least the first member and the second member are movable with respect to the attached pulley by an external force greater than or equal to a predetermined value. 5. Centering jig.   5. The pulley of a transmission device according to claim 1, wherein the first member, the second member, and the intermediate member connected to each other have substantially the same cross-sectional shape or outer shape. Centering jig. A pulley centering device for a transmission device using the pulley centering jig according to claim 1,
The first and second bending angle instruction sections output first and second bending angle signals, and are provided with a display for displaying an amount to be adjusted based on the bending angle signal. A pulley centering device for a transmission device.

Images