JPH1038952A - Inspection apparatus for coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inspect a coil with high accuracy without removing a rotor by a method wherein an inspection apparatus for the coil is provided with an inspection part which measures the physical property of the coil, with a link mechanism at the inspection part, with a feed mechanism and with a rotation mechanism. SOLUTION: By a control device 9, the degree of controllable freedoms of a rotation mechanism 4, a feed mechanism 6, a link mechanism 5, an inspection head 7, a bellows and the like is operated by hand by an operator or automatically by a program. Thereby, an inspection can be performed not only by a manual operation but also automatically. In addition, the feed mechanism 6 and the link mechanism 5 are operated in cooperation, and the inspection head 7 can be moved in an arbitrary track to the radial direction of the shaft of a rotor 2. Then, a data processor 10 measures measured data on the capacitance or the like between an electrode plate attached to the inspection head 7 and a conductor at an upper coil 69 or a bottom coil 70, and it processes the measured data so as to be retained in a file together with various data. Thereby, the quality of a coil can be judged in the point of time of its measurement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for inspecting a coil of a rotating electric machine without removing a rotor, and more particularly to an automatic inspection apparatus for inspecting insulation of an upper coil and a bottom coil outside a stator. The present invention relates to a coil inspection device suitable for inspection.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for inspecting a rotating electric machine with a rotor installed, there is an apparatus as disclosed in Japanese Patent Application Laid-Open No. 63-228948. Inspections were made to see if they were correctly pushed into In addition, the inspection of the coil outside the stator was performed by a human after removing the rotor.

[0003]

The above-mentioned JP-A-63-22894
In the inspection device described in Japanese Patent Publication No. 8, only inspection of the upper coil facing the wall surface of the stator and the inner surface of the stator could be executed. For this reason, the inspection of the whole coil including the inspection of the bottom coil and the inspection of the coil outside the stator could not be performed. Therefore, to detect insulation failure due to water leakage generated at the brazing part of the coil end, and to prevent insulation failure between the rotor and stator beforehand, the rotor must be removed and a human inspection must be performed. It took a lot of time. In addition, there is a problem that the inspection value tends to be uneven because the inspection is performed by a human.

SUMMARY OF THE INVENTION An object of the present invention is to provide an inspection capable of accurately detecting an insulation failure of a coil outside a stator without removing the rotor, and preventing a failure in insulation between the rotor and the stator due to water leakage. An object of the present invention is to provide a coil inspection device capable of performing the following.

[0005]

In order to solve the above-mentioned problems, a coil inspection apparatus according to the present invention measures physical properties of a coil by contacting or approaching a side surface of a coil disposed outside a stator of a rotating electric machine. An inspection unit, a link mechanism for positioning the inspection unit with respect to the side surface of the coil, a feed mechanism for moving the link mechanism along the coil, and a circling mechanism for moving the inspection unit and the link mechanism along the circumference of the rotor. And a configuration including:

[0006] The object of the present invention is achieved by providing the coil inspection apparatus with such means and operating it.

[0007] The coil is an expression including both the upper coil and the bottom coil. Examples of the rotating electric machine include a generator, a motor, and an induction motor.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of a coil inspection apparatus according to an embodiment of the present invention will be described in the case where a generator is used as an example of a rotating electric machine and an upper coil 69 and a bottom coil 70 outside a stator 84 are inspected. Will be described with reference to FIGS. 1 to 5.

FIG. 1 is a side view showing the entire configuration of the coil inspection apparatus. FIG. 2 is a front view of the inspection apparatus shown in FIG. 1 cut along the AA section along the fan ring 25.
FIG. 3 is a side view of the link mechanism, and FIG. 4 is a plan view of FIG. FIG. 5 is a three-view drawing showing the inspection head.

The coil inspection apparatus 1 of the present embodiment mainly includes the following means. The stator is used as an inspection unit to inspect the coil.
There is an inspection head 7 for measuring the physical properties of the coil in contact with or in proximity to the upper coil 69 and the bottom coil 70 outside of 84, and a camera 8 for acquiring an image around the inspection target coil. As a means for moving the measuring unit, the inspection head 7
Mechanism 5 as a first moving means for moving the link mechanism 5 in the radial direction of the axis of the rotor 2 (vertical direction in FIG. 1) and moving the link mechanism 5 in the axial direction of the rotor 2 (horizontal direction in FIG. 1). As a second moving means, there is a feed mechanism 6, and as a third moving means coaxial with the rotation axis of the rotor 2 and around the axis of the retaining ring 3 holding the rotor 2, there is a circling mechanism 4 as a third moving means. . As means for controlling the orbiting mechanism 4, the feed mechanism 6, and the link mechanism 5, there is a control device 9. Others include a monitor 11 for outputting an image of the camera 8, a data processing device 10 for processing data measured by the inspection head 7, and an operation panel 12 operated by an operator during manual operation. Thus, the coil inspection device 1 is configured.

Next, the configuration of each element will be described in detail. The orbiting mechanism 4 for rotating the inspection head 7, the feed mechanism 6 and the link mechanism 5 around the axis of the retaining ring 3 includes:
Support belt 1 attached to shaft 18 coaxial with rotor 2
3, a base 14 and two drive rollers 15a and 15b.
The support belt 13 includes a roller belt 17 including two wires 16a and 16b and a plurality of rollers 17a,
The roller belt 17 is wound around the outer periphery of the shaft 18. The wire 16a connected to the roller belt 17 is detachably attached to a hook 19 provided on the base 14, and the wire 16b is connected to a winding mechanism 20 provided on the base 14. The support belt is not limited to the roller belt 17 having the plurality of rollers 17a as described above, but may be a belt made of a material having a highly lubricating surface.

The installation procedure of the base 14 is as follows. After the base 14 is seated on the retaining ring 3, the support belt 13 is wound around the shaft 18, the end of the wire 16 b is connected to the hook 19, and the winding mechanism 20 is used. Is completed by applying a predetermined tension. Drive rollers 15a and 15b for driving the base 14 around the rotation axis of the rotor 2 are provided on both side surfaces of the base 14. A feed mechanism 6 and a link mechanism 5 are provided inside the base 14. In addition, base 14
Are provided with two positioning rollers 22a and 22b in contact with the end surface 3a of the retaining ring 3, an adjusting roller 23 in contact with the end surface 25a of the fan ring 25, and two support rollers 21a and 21b in contact with the outer peripheral surface 25b of the fan ring 25. Have been. The adjusting roller 23 is moved by the adjusting mechanism 24 to the end face 25 of the fan ring 25.
It is configured to be pressed against a.

The longitudinal direction of the orbiting mechanism 4 corresponds to the drive roller 15
a, 15b, support rollers 21a, 21b and positioning rollers 22a, 2
2b, and the adjustment roller 23 holds the rotation mechanism 4 substantially in parallel with the rotation axis of the rotor 2, and the positioning rollers 22a, 22b and the adjustment roller 23 hold the position of the orbiting mechanism 4 in the rotation axis direction of the rotor 2. Then, the driving rollers 15a, 15b of the base 14 are pressed against the outer peripheral surface 3b of the retaining ring 3 by the tension of the support belt 13, and the base 14 is rotated by the frictional force between the driving rollers 15a, 15b and the retaining ring 3. At any position around the rotation axis of the child 2, the child 2 can stably stand still against gravity. On the other hand, drive roller 15
By rotating a and 15b, the base 14 orbits around the retaining ring 3, and the support belt 13 can smoothly slide around the shaft 18 by the rotation of the roller 17a.

At the end of the base 14, a camera arm 83 having a camera 8 at the tip is provided.
The state of the inspection head 7 can be monitored more. The operator operates the upper coil 69 and the bottom coil on the monitor 11 image.
By looking at the position 70, the orbiting of the orbiting mechanism 4 can be performed.

The feed mechanism 6 includes a feed drive motor 26, a pinion gear 27 driven by the feed drive motor 26, and a pinion gear.
A rack 28 driven by 27 and a plurality of guide rollers 29
Consists of A feed drive motor 26 for driving the pinion gear 27 is installed inside the base 14 of the orbiting mechanism 4,
A guide roller 29 is provided between both sides of the tray 30 on which the link mechanism 5 is mounted and the base 14. Guide roller
29 are arranged in two rows in the longitudinal direction of the base 14. The grooves 30 a formed on both side surfaces of the tray 30 are sandwiched by two rows of guide rollers 29, so that the tray 30 is attached to the base 14. You can slide it.

Further, a rack 28 is provided on a side surface of the tray 30, and the rack 28 is driven by a pinion gear 27. With the above configuration, the tray 30 can be moved in the rotation axis direction of the rotor 2 and the pinion gear 27 can be made free so that the tray 30 can be inserted in the longitudinal direction of the base 14 and pulled out. It becomes possible.

The link mechanism 5 is mounted inside the tray 30, moves the inspection head 7 in the radial direction of the rotation axis of the rotor 2, and moves the inspection head 7 to a position where the upper coil 69 and the bottom coil 70 are measured. Is to move. The link mechanism 5 includes a link drive motor 31, a ball screw 32, a linear bearing 33, a slider 34, links 35a and 35b, an arm 36,
It is composed of a roller guide 37.

The ball screw 32 is driven by a link drive motor 31 to move a slider 34 mounted between the ball screw 32 and the linear bearing 33. Slider 34
The link 35b rotating around the undulating shaft 38 is connected by a link 35a, and the link 35b and the arm 36 are connected via a swing shaft 45 orthogonal to the undulating shaft 38. A push rod 39 is provided inside the arm 36 formed of a hollow pipe. The inspection head 7 is rotatably supported around a swing shaft 43 fixed to an end of the arm 36.

With the above structure, the link drive motor 31 is driven to move the slider 34, and the arm 36 is caused to perform the undulating operation about the undulating shaft 38 via the links 35a and 35b.
By this operation, the inspection head 7 can be moved in the radial direction of the rotation axis of the rotor 2. In addition, arm 36
Can swing about the swing shaft 45 in the direction perpendicular to the rotation axis of the rotor 2 (vertical direction in FIG. 4), and the inspection head 7 can rotate about the swing shaft 43.

A rotation lock 40 having a triangular guide groove 40 a is provided on the inspection head 7. Push rod
A pin 44 is provided on the upper end 39a of the 39. When the push rod 39 is pushed upward, the pin 44 is pressed against the vertex of the guide groove 40a, and the rotation of the inspection head 7 is restrained. On the other hand, when the push rod 39 is lowered, the inspection head 7 can freely rotate by the width of the bottom of the guide groove 40a.

The lower end 39b of the push rod 39 is provided with a pair of rollers 41. The rollers 41 are constantly pressed against the roller guide 37 by a spring 42, so that when the arm 36 is raised from the horizontal position, In the vicinity where the roller 41 slides along the roller guide 37 and the arm 36 stands upright, the shape of the portion where the roller 41 of the roller guide 37 comes into contact is formed so that the distance from the undulating shaft 38 to the roller 41 is reduced. Roller 41 descends along the shape of the roller guide 37 due to the spring force of the spring 42, and the push rod 39
Slides down in the hollow arm 36.

Further, the roller guide 37 is formed with a bifurcated arm 37a sandwiching the arm 36, and the gap between the bifurcated arm 37a increases from the tip end of the arm 36 toward the undulating shaft 38, The width of the arm 36 is substantially equal to the distance from the arm 36.

With the above arrangement, when the arm 36 is horizontal, the position of the inspection head 7 in the circling direction and the swing shaft 43
When the rotation is restricted and the arm 36 stands up by a predetermined angle or more, the inspection head 7 can swing in the revolving direction and can rotate around the swing shaft 43.

The link mechanism 5 connects the inspection head 7 to the rotor 2
This configuration has a degree of freedom to move in the radial direction of the rotation axis, and can position the inspection head 7 to a predetermined position between the coils facing each other. Thus, the inspection head 7 can be positioned at a predetermined position for inspecting the coil. The link mechanism 5 is provided with at least one or more passive degrees of freedom between the inspection head 7 and the link mechanism 5 for changing the attitude of the inspection head 7 so that the side surface of the inspection head 7 follows the side surface of the coil. .

Further, in the initial state where the inspection head 7 is located in the gap between the coil and the rotor 2, the movement of the passive degree of freedom is restricted, and when the inspection head 7 moves to the vicinity of a predetermined inspection position, the movement is restricted. The link mechanism 5 is provided with a lock mechanism for releasing the lock. This allows the attitude of the inspection head 7 to passively follow the coil even when inspecting the curved surface portion of the coil.

With the above configuration, the feed mechanism 6 is attached to the revolving mechanism 4 and has a degree of freedom for moving the link mechanism 5 in the direction of the rotation axis of the rotor 2, thereby providing a link. The mechanism 5 can be positioned at predetermined positions of the upper coil 69 and the bottom coil 70. Further, since the feed mechanism 6 and the link mechanism 5 are configured to be able to cooperate by the control device 9, the inspection head 7 can be moved along a direction orthogonal to the rotation axis of the rotor 2.

For this reason, in this embodiment, the link mechanism can be positioned with respect to all of the upper coil 69 and the bottom coil 70 radially arranged about the rotation axis of the rotor 2, The coil outside the stator 84 can be inspected without removing the child.

The link mechanism 5 is configured to be detachable from the feed mechanism 6. This makes it easy to handle the apparatus because the apparatus can be divided when the apparatus is moved, and it is also possible to replace the link mechanism 5 for each plant, each position of the coil to be measured, and each measurement object. Inspection of the stator 84 is also possible.

The inspection head 7 includes a head frame 46, a bellows 47, an electrode plate 48, and a copying roller 49. A pair of bellows 47 having one end fixed to the head frame 46
Can be extended by injecting air, and the electrode plate 48 made of a flexible conductor can be pressed against the side surface of the coil with a predetermined force. Bellows 47 is made of a flexible material. What is injected into the bellows 47 as a means for pressing the side surface of the coil with a predetermined force is not limited to air, and a liquid may be used.

In this embodiment, the electrode plates 48 are provided on both left and right sides of the inspection head, the inspection head 7 is sandwiched between the coils, and the inspection head 7 is pressed by pressing the electrode plates 48 against the coils.
The capacitance from the conductor of the coil on both sides to the surface of the insulating coating is measured, and the insulation of the coil is inspected to detect insulation failure due to water leakage generated from the coil end. However, it may be provided on only one of the left and right sides to perform inspection on only one side, or may be provided on the upper side to perform the same inspection on the inside of the stator.

The operation of moving the inspection head 7 along the coil will be described with reference to FIG. When the arm 36 stands upright, the inspection head 7 becomes free in the revolving direction and around the oscillating shaft 43, and drives the feed mechanism 6 to move the inspection head 7 in the rotation axis direction of the rotor 2 so that the copying roller 49 is moved downward. coil
The posture Φ of the inspection head 7 is changed while contacting and imitating the side surface of the inspection head 70. The movement d of the bottom coil 70 in the facing direction at this time
Move passively by rotation about the swing shaft 45. The inspection head 7 tilts around the rotation axis of the rotor 2 with respect to the bottom coil 70 by the rotation around the swing shaft 45, but this error can be absorbed by deformation of the bellows 47 because the tilt is small. It is also possible to follow the upper coil 69 by the same operation. Note that a member having a sliding surface with good lubricity may be attached instead of the copying roller 49.

Since the coil near the stator 84 is straight, measurement can be easily performed. However, the coil in this portion is often covered with another cover or the like. is there. However, since the inspection head 7 of this embodiment can be rotated by the swing shaft 43 as described above, it is possible to accurately measure even where the coil is bent away from the end of the stator 84. It is also possible to easily measure the same coil at a plurality of locations.

The control device 9 includes a circling mechanism 4, a feed mechanism 6,
The controllable degrees of freedom of the link mechanism 5, the inspection head 7, the bellows 47 and the like can be operated manually by an operator or automatically by a program. As a result, not only the inspection by manual operation but also the inspection can be performed automatically. Further, it is possible to cause the feed mechanism 6 and the link mechanism 5 to perform a cooperative operation, and to move the inspection head 7 along an arbitrary locus in the radial direction of the rotation axis of the rotor 2.

The data processing device 10 measures the measurement data such as the capacitance between the electrode plate 48 attached to the inspection head 7 and the conductor of the upper coil 69 or the bottom coil 70, and after performing the processing, Save to a file along with data such as date and time, coil number, measurement position, etc. This makes it possible to determine the quality of the coil at the time of measurement. Further, it is possible to determine the secular change of the coil from the measurement data acquired at each regular inspection.

Next, the coil inspection apparatus 1 described in the present embodiment.
The flow of the inspection work using the method will be described with reference to the flowchart of FIG. First, components such as an end bracket (not shown) are removed (S1). Next, the orbiting mechanism 4 is placed near the top of the retaining ring 3, and the positioning rollers 22 a and 22 b are brought into contact with the end surface of the retaining ring 3. (S2). Next, the wire 16a of the support belt 13 is removed from the hook 19, and the support belt 13 of the circling mechanism 4 is wound around the shaft 18 using a jig or the like (S3). Next, the end of the removed support belt 13 is attached to the orbiting mechanism 4, and a predetermined tension is applied to the support belt 13 by the winding mechanism 20 (S4).

Next, the operation check and initialization of each operation part of the apparatus are performed (S5). Next, the operator moves to the first measurement position while viewing the image of the camera 8 (S6). Next, the inspection head 7 is positioned at a predetermined measurement position using the feed mechanism 6 and the link mechanism 5 (S7). Next, the bellows 47 of the inspection head 7 is extended, and the electrode plate 48 is pressed against the coil with a predetermined pressing force (S8). Next, measurement data such as capacitance is collected by the data processing device 10 (S9).

If the collected data is determined to be normal, the data is recorded. If it is determined that the data is not normal, shift the measurement position and perform measurement again (S1
0). This operation is performed while the circling mechanism 4 circulates all the coils radially arranged around the rotation axis of the rotor 2. At the end of the work, the device is removed in the reverse order of the device installation procedure (S11).

As described above, according to the present embodiment, the rotation mechanism 4 attached to the retaining ring 3 rotates around the rotation axis of the rotor 2 and is arranged radially with respect to the rotation axis of the rotor 2. The inspection head 7 can be moved to the vicinity of the selected coil. Further, using the feed mechanism 6 and the link mechanism 5, the inspection head 7 is moved in the direction of the rotation axis of the
Can be moved, so that the inspection head 7 can be positioned at a predetermined position of the coil. Further, the electrode plate 48 can be pressed against the side surface of the coil with a predetermined pressing force by the bellows 47 of the inspection head 5,
The measurement of the coil can be performed accurately without removing the rotor.

In the curvature portion of the coil, the posture of the inspection head 7 is changed by the swing shaft 43 and the swing shaft 45.
Since the inspection head 7 can be freely rotated and the posture and position of the inspection head 7 can be changed while being in contact with the side surface of the coil by the scanning roller 49, it is possible to perform measurement in the same manner as the parallel portion. Further, it is possible to easily cope with changes in coil position and dimensions due to differences in plants by preparing a plurality of devices above the tray 30 and replacing them.

In this embodiment, the plurality of rollers 17a are brought into contact with the shaft 18 to slide them. However, the same effect can be obtained by changing the plurality of rollers 17a to one having a surface having a high lubricity. Obtainable. Further, in the present embodiment, the capacitance including the covering of the coil is measured by the electrode plate 48, but the electrode plate 48 of the present embodiment is
For example, the same effect can be obtained by replacing the sensor such as an ultrasonic flaw detector with a sensor that measures the physical quantity in close contact with the coil side surface.

Next, the configuration of a circling mechanism 51 of a coil inspection apparatus 50 according to another embodiment of the present invention will be described with reference to FIG.
This is a case where the present invention is applied to a generator as in the previous embodiment.

The orbiting mechanism 51 of the coil inspection device 50 shown in the present embodiment includes a retaining ring 3
Is used when there is a groove 3c concentric with the rotation axis on the side surface of the. The circling mechanism 51 includes a base 52 and a driving mechanism 53.
The driving mechanism 53 includes a driving roller 54 that contacts the outer periphery 3b of the retaining ring 3 and applies a propulsive force about the rotation axis of the rotor 2; a pressing roller 55 that contacts the wall surface of the groove 3c of the retaining ring 3; It comprises an adjusting mechanism 56 for adjusting the distance between the shaft of the driving roller 54 and the driving roller 55.

The driving roller 54 is brought into contact with the outer periphery 3b of the retaining ring 3, and the pressing roller 55 is brought into contact with the wall surface of the groove 3c.
Adjusting the distance between shafts by adjusting mechanism 56, retaining ring 3
To fix the orbiting mechanism 51 to the retaining ring 3. In this case, it is better to provide the driving rollers 54 on both the left and right sides of the coil inspection device 50 as in the embodiment shown in FIG. Further, it is better to similarly provide the pressing rollers 55 on both the left and right sides of the coil inspection device 50.

According to the present embodiment, the retaining ring 3
The rotation of the rotor 2 around the rotation axis can be realized only by nipping the roller between two types of rollers, a driving roller 54 and a pressing roller 55, and the support belt 13 as shown in FIG. Becomes easier.

Next, the configuration and operation of the link mechanism 58 and the inspection head of the coil inspection apparatus 57 according to another embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a side view showing a link mechanism according to another embodiment. FIG. 10 is a side view showing the operation of the link mechanism shown in FIG. 11 and 12 are configuration diagrams of the inspection head. 11 and 12, how the inspection head rotates and slides is indicated by broken lines.

The link mechanism 58 of the coil inspection device 57 shown in this embodiment includes a first link 59, a second link 60, a third link 61, and a fourth link 62, which form a four-bar parallel link, and
A link upright motor 63 and a second link upright motor 64 are provided, and the first link 59 is provided with an inspection head 73. When inspecting the upper coil 69, first, the first link upright motor 63 pulls the fifth hinge 71 on the fourth link 62, and rotates the fourth link 62 around the fourth hinge 68. The third link 61 connected by the third hinge 67 is driven, and the first link 59 connected by the third link 61 and the second hinge 66 is rotated around the first hinge 65 and stands upright to the measurement posture. .

Next, when measuring the bottom coil 70, the first link upright motor 63 is held in the upper coil measurement state, and the second link upright motor 64 is used to hold the sixth link 60.
By pulling 72, the second link 60 is rotated around the fourth hinge 68 to position the inspection head 73 and perform measurement. In this case, the direction from the third hinge 67 to the fourth hinge 68 is the second hinge
Inspection head maintained parallel to the direction of the first hinge 65 from 66
The posture of 73 is maintained.

The inspection head 73 is rotatably supported around a swing shaft 74 provided on a block 75, and its rotational motion is rigidly restrained by a leaf spring 77 provided on the block 75 supported on a lock pin 76. Further, the block 75 and the first link 59 are provided with sliding portions 75a and 59a that mesh with each other, and slidably support the inspection head 73 in the circumferential direction. The position of the inspection head 73 in the circumferential direction with respect to the first link 59 is sandwiched between lock pins 78 and rigidly restrained by a leaf spring 79 provided on the first link 59. In the case of the link mechanism 5 shown in FIG. 3, in each measurement of the upper coil 69 and the bottom coil 70, the inspection head 7 is attached to the curved side surface of the coil.
Arm 36 for both measurements.
It is necessary to stand upright, and the length of the arm 36 is changed according to each measurement position by replacing the tray 30.

On the other hand, when the link mechanism 58 of the present embodiment is used, the posture of the inspection head 73 with respect to the coil can be kept constant during the movement in the radial direction, and therefore, as in the link mechanism 5 shown in FIG. There is no need to replace the tray 30 for measurement of both the upper coil 69 and the bottom coil 70, and the coil inspection of both the upper coil 69 and the bottom coil 70 can be performed with a single setting of the apparatus. Further, it is possible to cope with a change in the dimensions of the coil due to a change in the plant without changing the tray 30.
Further, the posture of the inspection head 7 is always constant, and the flexibility of the inspection head 73 in the swinging direction and the circling direction by the leaf springs 77 and 79 causes the inspection head 73 to be formed on the curved surface of the coil similarly to the configuration shown in FIG. Can follow along.

In this embodiment, the configuration is such that the movement of the inspection head in the circumferential direction is supported by the degree of freedom of translation by the sliding portions 75a and 59a. However, in the configuration shown in FIG.
The same effect as in the present embodiment can be obtained even if the space between a and the arm 36 is rigidly connected by a torsion spring or the like.

Next, the configuration of an inspection head of a coil inspection apparatus according to another embodiment of the present invention will be described with reference to FIG. In the arm 80 of the present embodiment, two inspection heads 81 and 82 are provided, and when the arm 80 stands up, each position is installed so as to match the measurement position of the coils 69 and 70. I have. Although details are omitted, as shown in the previous embodiment, the electrode plate is provided with functions such as a sliding shaft and a swinging shaft, and the electrode plate is brought close to the coil according to the position or shape of the coil, and the capacitance and the like are reduced. Inspection can be performed. If the inspection head of this embodiment is applied to the configuration described in the other embodiments described above, it is also possible to inspect the upper coil 69 and the bottom coil 70 with a single positioning, and to efficiently perform the inspection. Inspection of the coil can be performed, and the inspection time can be reduced.

In the above-described embodiment, the coil inspection device is a single device that is attached after removing the end bracket (not shown), but may be incorporated in a rotary machine in advance. At that time, the control device 9
It is conceivable to provide a small window that can be opened and closed on the end bracket for connection with the end bracket, or to control each moving means of the inspection apparatus wirelessly. With such a configuration, it can be used as a rotary machine with a coil inspection device that can automatically perform a coil inspection without removing an end bracket or the like.

[0053]

As described above, according to the present invention, it is not necessary to remove the rotor when measuring and inspecting the coil, so that the time for stopping the operation for the inspection can be shortened. In addition, since a human does not directly perform an inspection, unevenness in inspection values can be reduced, and the inspection can be performed under predetermined measurement conditions. Furthermore, by using a rotating and movable inspection head, highly reliable measurement data can be obtained with high efficiency not only in the straight part of the coil but also in the bent part, and the quality of the coil can be determined from the obtained data. It is possible to make a judgment.

Further, since the acquired data can be stored together with the positioning data, it is easy to measure the secular change of the data at the same position, and it is easy to judge the quality of the coil. In addition, it is possible to cope with differences in dimensions due to differences in plants and differences in the position of the measurement coil in the radial direction of the rotor rotation axis by exchanging the entire unit prepared in advance with units with different dimensions of the arm. it can.

[Brief description of the drawings]

FIG. 1 is a side view showing a coil inspection device of the present invention.

FIG. 2 is a front view of the coil inspection device shown in FIG.

FIG. 3 is a side view showing a link mechanism of the coil inspection device.

FIG. 4 is a sectional view showing a link mechanism of the coil inspection device of the present invention.

FIG. 5 is a three-view drawing showing a configuration of an inspection head of the coil inspection device of the present invention.

FIG. 6 is a plan view showing an operation when the inspection head is made to follow the coil.

FIG. 7 is a flowchart showing an operation flow of the present invention.

FIG. 8 is a side view showing a revolving mechanism according to another embodiment of the present invention.

FIG. 9 is a side view showing a link mechanism according to another embodiment of the present invention.

FIG. 10 is a side view showing the operation of a link mechanism according to another embodiment of the present invention.

FIG. 11 is a plan view showing an inspection head according to another embodiment of the present invention.

FIG. 12 is a front view of the inspection head shown in FIG.

FIG. 13 is a side view showing a link mechanism according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coil inspection device, 2 ... Rotor, 3 ... Retaining ring, 3a ... Retaining ring end surface, 3b ... Retaining ring outer peripheral surface, 3c ... Retaining ring groove, 4 ... Revolving mechanism, 5 ... Link mechanism, 6 ... Sending mechanism, 7 ... Inspection head,
8 camera, 9 control device, 10 data processing device, 11
Monitor, 12 operation panel, 13 support belt, 14 base, 15
a, 15b: drive roller, 16a, 16b: wire, 17: roller belt, 17a: roller, 18: shaft, 19: hook, 20 ...
Take-up mechanism, 21a, 21b ... support roller, 22a, 22b ... positioning roller, 23 ... adjustment roller, 24 ... adjustment mechanism, 25 ... fan ring, 25a ... fan ring end face, 26 ... feed drive motor, 2
7… Pinion gear, 28… Rack, 29… Guide roller, 30
… Tray, 30a… Tray groove, 31… Link drive motor, 32
... ball screw, 33 ... linear bearing, 34 ... slider,
35a, 35b… Link, 36… Arm, 37… Roller guide, 37a
… Bifurcated arm, 38… up and down axis, 39… push rod, 39a…
Push rod upper end, 39b… Push rod lower end, 4
0: rotation lock, 40a: triangular groove, 41: roller, 42: spring, 43: swing shaft, 44: pin, 45: swing shaft, 46: head frame, 47: bellows, 48: electrode plate,
49: copying roller, 50: coil inspection device, 51: circling mechanism,
52: Base, 53: Drive mechanism, 54: Drive roller, 55: Push-in roller, 56: Adjustment mechanism, 57: Coil inspection device, 58 ...
Link mechanism, 59: first link, 59a: sliding part, 60: second
Link, 61: third link, 62: fourth link, 63: first link standing motor, 64: second link standing motor, 65: first
Hinge, 66: second hinge, 67: third hinge, 68: fourth hinge 4, 69: upper coil, 70: bottom coil, 71: fifth hinge 4, 72: sixth hinge 4, 73 ... inspection head, 74 ... swing shaft, 75 ... block, 75a ... sliding part, 76 ... lock pin, 77 ... leaf spring, 78 ... lock pin, 79 ... leaf spring, 80 ... arm, 81, 82 ... inspection head, 83 ... camera Arm, 84 ... stator.

Claims (8)

[Claims] 1. A coil inspection device for inspecting a coil of a rotating electric machine, comprising: an inspection unit for measuring physical properties of the coil in contact with or in proximity to the coil; and a link mechanism for positioning the inspection unit with respect to the coil. And a moving means for moving the link mechanism. 2. A coil inspection apparatus for inspecting a coil of a rotating electric machine, comprising: an inspecting unit that measures physical properties of the coil by contacting or approaching a side surface of the coil disposed outside a stator of the rotating electric machine. A link mechanism for positioning the inspection unit with respect to the side surface, a feed mechanism for moving the link mechanism in an axial direction of a rotor of the rotary electric machine, and rotating the inspection unit, the link mechanism, and the feed mechanism. A coil inspection device, comprising: a rotation mechanism for moving the child in a rotation direction. 3. A driving roller that rotates in contact with an outer peripheral surface of a retaining ring connected coaxially with the rotor to move the orbiting mechanism, and a driving roller in contact with a side surface of the retaining ring and that of the rotating mechanism itself. The circling mechanism includes a positioning roller that determines a position, a support belt that is coaxial with the rotor, is wound around an outer periphery of a shaft sandwiched between the retaining ring and the fan ring, and is in contact with the shaft. The coil inspection device according to claim 2, wherein 4. A driving roller which rotates in contact with an outer peripheral surface of a retaining ring coaxially connected to the rotor and moves the orbiting mechanism, and is concentric with a rotating shaft formed on a side surface of the retaining ring. The coil inspection device according to claim 2, further comprising: a pressing roller that contacts an outer peripheral surface of the circumferential groove. 5. The inspection mechanism can be moved in the radial direction of the axis of the rotor by controlling the link mechanism to have a degree of freedom and to control the link mechanism and the feed mechanism to execute a cooperative operation. 3. The coil inspection device according to claim 2, wherein: 6. A mechanism having at least one passive degree of freedom between the inspection unit and the link mechanism, wherein the inspection unit is rotatable so that a side surface thereof is along the side surface of the coil, and a link mechanism. A lock mechanism for restraining the movement of the passive degree of freedom in an initial state and releasing the restraint when the inspection section moves near a predetermined inspection position. 2. The coil inspection device according to 2. 7. A coil inspection apparatus for inspecting a coil of a rotating electric machine, wherein the capacitance of the coil is measured by contacting or approaching a side surface of the coil disposed outside a stator of the rotating electric machine. An inspection head having an electrode plate for inspecting a coil for insulation failure, and a link mechanism for moving the inspection head in a radial direction of an axis of a rotor of the rotating electric machine and positioning the inspection head with respect to the coil side surface, A feed mechanism that moves the link mechanism in the axial direction of the rotor along the coil; and a circling mechanism that moves the inspection unit, the link mechanism, and the feed mechanism in the circling direction of the rotor. Characteristic coil inspection device. 8. A first moving means for moving an inspection section for inspecting a coil of rotating electric power in a radial direction of the rotating shaft, and a second moving means for moving the inspection section in an axial direction of a rotor of the rotating electric machine. A third moving means for moving the rotor of the rotating electric machine in a circumferential direction, wherein each of the moving means moves the inspection section to a predetermined inspection position to perform coil inspection. apparatus.