JPH0370450A - Inspection device of vehicle armature - Google Patents

Abstract

PURPOSE:To enable using a position sensor without replacing for a long period of time while maintaining a high detection accuracy by performing the position detection of a commutator at the time of inspection through a reflection type laser sensor. CONSTITUTION:Reflection type laser sensors 52a, 52b are used as position sensor. The position detection of a commutator in an inspection is performed by the reflection type laser sensors 52a, 52b. That is, an inspection part 45 performing a lowering operation with the driving operation of an inspection driving part 50 is provided downward from the inspection driving part 50. The lower end of the inspection part 45 is provided with two applied electrodes 51a and one pickup electrode 51b, and the first and second reflection type laser sensors 52a and 52b are provided on the front end face and one side face, respectively. Thus, the position detection sensor of the commutator 25a is excellent in detection accuracy and can be used for a long period of time.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vehicle armature inspection device.

(Prior Art and Problems) In the case of trains, etc., the armature of the motor is inspected by an inspection device every predetermined mileage for safety reasons.

This inspection involves sequentially contacting a pair of test electrodes to each adjacent commutator of the commutator while rotating the armature removed from the vehicle, and detecting the resistance value to perform a copper loss test in the commutator or coil. By conducting voltage tests, we discovered short circuits, disconnections, and insulation defects in the coil section.

FIG. 12 and FIG. 3 are diagrams showing the pattern of conventional inspection. The inspection device consists of a mounting mechanism for mounting an armature and an inspection machine, and in this figure, only the armature 101 and a portion 102 of the inspection machine corresponding to the armature 101 are shown.

In the corresponding section 102 of the inspection machine, 103a is an application electrode;
103b is a pickup electrode, picture electrode 103a,
103b constitutes a pair of inspection electrodes. Both test electrodes 103a and 103b are integrally provided at the lower part of the test section 105 that moves up and down with respect to the main body 104 side. 10
6 is a sapphire needle, and the upper end of this sapphire needle 106 is connected to a limit switch 107, and the position sensor 1 is connected by the sapphire needle I06 and the limit switch 107.
08 is configured.

The armature 101 has a coil 110 wound around an armature shaft 109 and an annular commutator 111 at one end thereof.
The commutator 111 is configured such that the commutators l I la are sequentially arranged through the respective grooves 111b.

The inspection is performed while the armature 101 is continuously rotated at low speed by the drive mechanism of the armature mounting mechanism, and the limit is reached when the end of the sapphire needle 10B of the position sensor I08 falls into the commutator groove 11 lb. The test drive section is driven based on the detection signal output by the switch 107, and the test section 105 is lowered, and the application electrode 103a is
and the pickup electrode 103b come into contact with a pair of adjacent commutators 1lla.

However, when using the position sensor 108 consisting of the sapphire needle 106 and the limit switch 107 as described above, the sapphire needle 106 inevitably wears out due to contact with the commutator, resulting in a decrease in detection accuracy and a long period of time. There was a problem that it was not possible to use the

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a commutator position detection sensor or a vehicle armature inspection device that has excellent detection accuracy and can be used for a long period of time. do.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pair of inspections that are operated in contact with/separated from a commutator of a commutator in a rotatably mounted vehicle armature. In the inspection device for a vehicle armature, the vehicle armature inspection device is equipped with a position sensor that detects the position of the commutator for operation of the inspection electrode, and a reflective laser sensor is used as the position sensor. .

(Function) According to the above configuration, the position of the commutator during inspection is detected by the reflective laser sensor.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a vehicle armature inspection device, FIG. 2 is a plan view, and FIG. 3 is a side view.

In these figures, the symbol ! 2 is a mounting mechanism for a vehicle armature, and 2 is an inspection machine, each of which constitutes an inspection device.

The mounting mechanism 1 consists of a pair of bearing bodies 3a and 3b, and a rail part 4 as a continuous and integral interval variable mechanism at the lower part of the bearing body 3a, on which the bearing body 3h is movable. It is set in. A roller (not shown) is provided at the lower part of the bearing body 3b, and as this roller rotates, the bearing body 3b is manually moved in the direction of arrow A on the rail portion 4. Reference numeral 5 designates a fixed handle, and by tightening the fixed handle 5, the bearing body 3b is fixed at a desired position on the rail portion 4.

Two rollers 7 are provided at the upper portions of the bodies 3a and 3b, and the armature 8 is received between the two rollers 7.

A fixing member 6 having a pair of fixing holes 6a as shown in FIG. machine 20
This is a handle for fixing the lock pin 33 inserted from 1II. The fixing hole 6a is formed to become narrower toward the back from the entrance side, so that the tapered lock pin 33 can be easily inserted into the fixing hole 6a.

The bearing is provided with a rotational drive mechanism 9 on the outside of the body 3b, which rotationally drives the roller 7 (the one on the left in FIG. 3).

As shown in FIG. 5, the rotational drive mechanism 9 includes a box 9a.
Within, the drive motor It and the drive motor lI drive $11.
A rotating member 13 into which the rotating member 112 is fitted and fixed, a clutch plate 14 that is attached to the rotating member 13 and operated by an electromagnetic mechanism, and an interlocking plate I5 that is attached to and detached from the clutch plate 14.
A rotating member 16 to which the interlocking plate 15 is attached, a rotating shaft 17 having one end fitted into the rotating member 16, and the rotating shaft 17.
the first gear 18 whose other end is fitted and fixed; and the roller 7
A shaft I9 is fitted and fixed thereto, and a second gear 20 meshing with the first gear 18 is provided. 21
Each of the bearings for supporting the shaft 19 of the roller 7 is a block. The clutch plate 14 is activated when the drive motor 11 is turned on and transmits power to the interlocking plate 15. By providing the clutch mechanism in this way, in the event of a failure of the drive motor 11, etc. , the armature 8 is configured to be manually rotatable as in the conventional case.

The armature 8 has a coil 23 wound around an armature shaft 22, and a commutator 25a at one end of the coil 23.
An annular commutator 25 is provided in which grooves 25b and 25b are arranged in sequence, and a gear 26 is attached to the other end. A rotating jig 27 is attached to both ends, and the rotating jig 27 is received by the roller 7.

As shown in FIG. 6, when the diameter of the commutator 25 of the armature 8 to be inspected is large, the rotating jig 27 described above has a smaller diameter, and when the diameter of the commutator 25 is smaller, the rotating jig 27a is used. The one with a large diameter 27b is used.

This is because the contact time of the test terminals to each commutator of the commutator 25 in the test machine 2 needs to be constant (inspection time 11) for any armature 8, so the diameter of the commutator 25 is In the case of a large armature 8, the rotation speed is increased, and in the case of an armature 8 whose commutator 25 has a small diameter, the rotation speed is decreased.

The inspection machine 2 includes a main body part 30 and an operating part 31 provided on the main body part 30 so as to slide in the direction of arrow B. The upper part of the main body part 30 is a control panel 32, and below the control panel 32, a pair of lock pins 33 are fitted into the fixing holes 6a of the body 3a. It is provided so that it can be moved in the direction. The lock pin 33 is formed so that the tip side becomes thinner.

35 is provided integrally with the lock pin 33, and is connected to the main body 3.
This is a lever that protrudes from a slide groove 36 provided on the outer surface of the lock pin 33. By operating this lever 35, the lock pin 33 is moved. 37 is a handle for fixing the lock pin 33 in an appropriate position.

Further, at the lower part of the main body 30, when the armature 8 is mounted on the mounting mechanism 1, the inspection machine 2 is moved, which rotates on a rail 38 provided in a direction perpendicular to the direction in which the armature 8 is arranged. Wheels 39 are provided for use. 40 is a handle for moving the inspection machine 2. As mentioned above, since the inspection machine 2 is installed on the rail 38, it needs to be stably fixed during inspection.
This is done by inserting and fixing into each of the fixing holes 6a. The overall arrangement of the inspection device and rail 38 will be explained later.

The actuating section 3I consists of a slide section 42 positioned so as to slide above the main body section 30, and a box section 43 connected to the end of the slide section 42. Air is provided in the upper part of the box section 43 in the vertical direction. A cylinder 44 is provided. Inside the box portion 43, there are provided an operating section (not shown) that moves up and down by the operation of the air cylinder 44, and an inspection drive section 50 attached to the lower end of the operating section. and,
As shown in FIGS. 8 and 9, an inspection section 45 is provided below the inspection drive section 50 and performs a descending operation in accordance with the drive operation of the inspection drive section 50.

Two application electrodes 51a and one pickup electrode 51b are provided at the lower end of the inspection section 45, and a first reflective laser sensor 52a is provided on the front end surface, and a second reflective laser sensor 52a is provided on one side surface.
A reflective laser sensor 52b is provided respectively.

In the armature 8 to be inspected, the position of the commutator 25 on the armature shaft 22 differs depending on the type, and the diameter of the commutator 25 also differs. It is configured to be movably positioned in both directions of arrows B and D by the operation of the air cylinder 44 and the air cylinder 44.

FIG. 7 is a simplified diagram showing the arrangement of the above-mentioned inspection apparatus in an inspection site.

Ten mounting mechanisms 1 are arranged in parallel, and a rail 38 is provided along each side of the mounting mechanisms 1. The reason why ten mounting mechanisms 1 are installed in parallel as described above is because the number of armatures 8 used in a train is usually 1.
10". When inspecting the armatures 8 of - formation, all the armatures 8 are removed from the vehicle and attached to their respective attachment mechanisms I, and the inspection is performed one by one by moving the inspection machine 2 on the rail 38. To go. The inspection on each of the armatures 8 is performed using the rotary drive mechanism 9.
When the armature 8 is rotated once, the terminals of the test section 45 are brought into contact with the commutator of the commutator 25 in order, and a test current is applied.If there is an abnormality, the control panel 32 will display the displayed in the section.

In the armature 8 of the above - configuration, the number of armatures 8 that constitute the main motor is "8", and the other two armatures are "8".
The axial dimension, the arrangement position of the commutator 8, and the diameter of the commutator 8 are different from those of the armature 8 of the main motor. Therefore, when installing the bearing, the position of the body 3b is moved and adjusted, and a rotating jig 27 with a corresponding diameter is attached.
It also adjusts the protrusion distance of the operating body 31 in the inspection machine 2 in the arrow directions B and D.

Next, the inspection operation in the armature 8 will be explained with reference to the circuit block diagram in FIG. 1O and the flowchart 1 in FIG. 11.

FIG. 10 shows the overall configuration of the device, 60 is a control section, and the control section 60 has a human power section 6I through which various inputs are performed.
, the drive motor 11 of the mounting mechanism 1, and a slide drive section 42b that drives the slide section 42 of the inspection machine 2;
Air cylinder 44, inspection drive section 50, first and second application electrodes 51a, pick-up electrode 51b, !th! , second reflection type laser sensors 52a and 52b.

The operation will be explained below.

First, the armature model name is inputted in the input section 61 as inspection target information (step S2), and in accordance with the manual input, the actuating body 31 is moved along the arrow B by the operation of the slide drive section 42b and the air cylinder 44. The inspection unit 45 is moved in the D direction to perform basic positioning (step S2).
. Then, based on the inspection command input in the human power section 61 (step S3), the drive motor I! is activated and armature 8
(step S4). Then, in the manual content, it is determined whether the armature 8 is type A (a type with a long commutator protrusion length) or B type (a type with a short commutator protrusion length) (step S5). If the groove 25b is detected by the first reflective laser sensor 52a (Step S6), the inspection unit 45 descends based on the detection signal, and the two application electrodes 51a pick up the corresponding commutator 25a. The electrode 51b is brought into contact with the adjacent commutator 25a for a predetermined time (step S7). The detection of WIJ25b is based on whether the amount of reflected light in the groove 25b or the commutator 25
This is done by reducing the amount of light reflected from the a-plane. In this way, a test signal is obtained at the pickup electrode 51b (step S8). When the above inspection operation is completed in one revolution of the annular commutator 25 (step S9), the rotation of the armature 8 is stopped (step S f O) and the operation is completed.

In the above, if it is determined in step 5 that the type is B, first, the corresponding delay time is set (step 5l
l). Then, iW2 is detected by the second reflective laser sensor 52b.
5b is detected (step 512), and after the above-mentioned delay time has elapsed after the detection signal is given (step 513).
The inspection section 45 is lowered, and the inner one application electrode 51a
is brought into contact with the commutator 25a, and the pick-up electrode 51b is brought into contact with the adjacent commutator 25a for a predetermined period of time to perform an inspection (step 514). The above delay time is the second
Since the reflective laser sensor 52b is provided on the side surface of the inspection part 45, the groove 25b is detected at a timing earlier than the timing at which the groove 25b is detected by the first reflective laser sensor 52a. It is set to .

(Effects of the Invention) Therefore, according to the present invention, the position detection of the commutator during inspection is performed by a reflective laser sensor, and there is no problem such as wear on the position sensor.
High detection accuracy is maintained at all times, and the position sensor can now be used for a long period of time without having to be replaced.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 to 11 relate to embodiments of the present invention, in which FIG. 1 is a front view of a vehicle armature inspection device, FIG. 2 is a plan view thereof, and FIG. The same side view, Figure 4 (A) is a plan view of the main part of the bearing on the inspection machine side, Figure 4 (B) is a front view of the same main part, Figure 4 (
C) is a side view of the main parts, Fig. 5 is a sectional view of the main parts of the rotation drive mechanism, Fig. 6 is a diagram explaining the configuration of the bearing of the rotating jig, and Fig. 7
The figure is an explanatory diagram of the layout of the inspection device, Figure 8 is an enlarged front view of the main part showing the inspection section, Figure 9 is an enlarged side view of the main part, and Figure 10 is an enlarged side view of the main part.
The figure is a block circuit diagram showing the overall configuration of the device, and FIG. 11 is a flow chart showing the operation of the device. 12 is a diagram corresponding to FIG. 8 of the conventional example, and FIG. 13 is a diagram corresponding to FIG. 9 of the conventional example. 8... Armature, 25... Commutator, 25a... Commutator, 51a... Application electrode (inspection electrode), 51b... Pick-up electrode (inspection electrode), 52a... No. 1 reflection type laser sensor, 52b... 2nd reflection type laser sensor.

Claims (1)

[Claims] (1) A pair of test electrodes that are operated in contact with/separate from a commutator of a commutator in a vehicle armature that is rotatably mounted, and a position that detects the position of the commutator in order to operate the test electrodes. What is claimed is: 1. A vehicle armature inspection device comprising a sensor, the vehicle armature inspection device comprising: a reflective laser sensor as the position sensor.