JPH0797123B2 - Zinc oxide lightning arrester automatic test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an automatic zinc oxide lightning arrester test device for continuously testing a series of inspection items of a zinc oxide lightning arrester.

(Prior Art) Conventionally, a zinc oxide lightning arrester using zinc oxide (ZnO) has been used as a lightning arrester. Then, as a test for product inspection of this lightning arrester, an insulation resistance test, a discharge withstand voltage test, a varistor voltage test and the like are performed. The outline of each test content is as follows.

(1) Insulation resistance test: A voltage of 1000 V is applied to the zinc oxide lightning arrester, and the insulation resistance value is measured with an insulation resistance meter.
At this time, if the measured value is 2000 MΩ or more, it is judged to be acceptable, and if it is 2000 MΩ or less, it is judged to be unacceptable.

(2) Discharge withstanding test: A predetermined lightning impulse large current to the zinc oxide lightning arrester, for example, current value 6KA, waveform 4 × 10 μs
Energize (wave front 4 μs, wave tail 10 μs). At this time, if there is no disturbance in the waveform, it is judged as pass, and if there is any disturbance, it is judged as fail.

(3) Varistor voltage test (operation start voltage test): Apply a commercial frequency voltage to the zinc oxide lightning arrester, and measure the voltage when the resistance current peak value of the lightning arrester becomes 1 mA.
At this time, if the measured value is in the range of 6.7 KV to 8.0 KV, it is judged as pass, and if it is outside the above range, it is judged as fail. However, even if the voltage is within the above range, an unstable voltage indication is determined as a failure.

Then, conventionally, when a zinc oxide lightning arrester was completed, the above-mentioned tests were separately carried out, and whether the lightning arrester was approved as a product was artificially judged based on the test results.

(Problems to be solved by the invention) However, in the above-described conventional test method, not only is it time-consuming to prepare for setting the arrester in a series of tests,
Each trial had to have its own cohesive space. Further, it takes labor and time to transfer the arrester between the respective test devices. Furthermore, according to each test result, it is possible to judge whether the arrester is a product or not,
The burden imposed on test workers was not small in properly removing defective products. A total of at least 6 people were required for these test operations.

A first object of the present invention is to provide an automatic tester for a zinc oxide lightning arrester, which can continuously and efficiently perform a series of lightning arrester tests in a short time.

In addition to the above-mentioned first purpose, the second purpose is to operate a device for performing a series of tests, judge pass / fail as a product based on the test result, and automatically select a good or defective lightning arrester for human operation. An object of the present invention is to provide an automatic test device for a zinc oxide lightning arrester that can reduce labor.

Configuration of the Invention (Means for Solving the Problems) In order to achieve the first object, the first invention is a forward transport mechanism C configured to perform a circular motion by a drive mechanism D, and the cyclic transport mechanism C. A support frame 12A having an insulating property formed in a side U-shape by a support member 9 attached to the above and upper and lower support arms 11A and 11B horizontally cantilevered at both upper and lower ends of the support member 9 12P and the upper support arm 11A
Upper end electrode of the lightning arrester J, which is provided at the tip of the
Upper gripping electrode 13 having a locking hole 13a for engaging 15A
A and the upper gripping electrode at the tip of the lower support arm 11B.
The lower gripping electrode 13B for supporting the lower end electrode 15B of the lightning arrester J at the upper end and the lower gripping electrode 13B for supporting the lower end electrode 15B at the upper end and urging the lower gripping electrode 13B to the upper and lower grip positions. A plurality of sets of gripping mechanisms H composed of springs 18 for supporting and supporting means 4A to AC at predetermined positions corresponding to the orbit of the gripping mechanism H,
The upper and lower gripping electrodes 13A, 13B are temporarily contacted, and the upper and lower end electrodes 15A, 1 of the lightning arrester J are connected through the upper and lower gripping electrodes 13A, 13B.
Multiple sets of upper and lower fixed electrodes for electrical connection with 5B
28A, 28B and a first insulation resistance test device R1, a discharge withstand test device T1 and a second test device which are sequentially connected to the three sets of fixed electrodes 28A, 28B in each set in the orbiting direction. The insulation resistance tester R2, a varistor voltage tester BV connected to the separate set of fixed electrodes 28A and 28B, a carry-in section C1 for mounting the lightning arrester J on the gripping mechanism H, and the gripping mechanism H. It is characterized in that the lightning arrester J is composed of carry-out parts C2 and C3 for removing the lightning arrester J.

The second invention is, in addition to the first invention, a central processing unit CPU32 for centrally and automatically controlling the drive mechanism D, the operation of each of the test devices R1, T1, R2, and BV and the determination of the test result, Read-only memory ROM38 attached to the central processing unit CPU32 for storing programs or data such as test methods and reference values in advance, and read / write attached to the central processing unit CPU32 for storing test results in advance It is characterized by being constituted by a dual-purpose memory RAM39.

(Operation) By adopting the above configuration, the present invention operates as follows.

In the first invention, first, the upper and lower electrodes of the lightning arrester are respectively grasped by the grasping mechanism, and when the forward transport mechanism is operated by the drive mechanism, the grasping mechanism performs a predetermined revolving motion while grasping the arrester.

At this time, the upper and lower end electrodes of the lightning arrester gripped by the gripping mechanism are temporarily connected to the pair of upper and lower fixed electrodes installed at a predetermined position corresponding to the orbit of locomotion through the pair of upper and lower gripping electrodes, and temporarily. And electrically connected.

By the way, in this electrical contact state, when each test device connected to each fixed electrode is operated, each test is performed in the order of the first insulation resistance test, the discharge withstand voltage test, and the second insulation resistance test, and an appropriate test is performed. A varistor voltage test is performed at the location. Then, each test result is displayed on each test device, and the quality of the arrester is artificially determined, and the arrester is selected according to the determination.

Next, in addition to the operation of the first invention, the second invention compares each test result with a reference value stored in advance by the central processing unit, and determines the quality of the arrester. Then, the arrester of the defective product is automatically removed from the defective product unloading section, and the good product is automatically carried out from the good product unloading section.

(Embodiment) Hereinafter, prior to the embodiment of the first invention, an embodiment of the second invention will be described with reference to FIGS.

Reference numeral 1 in FIGS. 1 and 2 denotes a test apparatus mechanical section, and the mechanical section 1 schematically shows a base 2, a drive mechanism D mounted on an upper portion of the base 2, and a drive mechanism D. A forward transport mechanism C attached to the upper part of the above, a gripping mechanism H attached to the forward transport mechanism C, and an outer side of the forward transport mechanism C, standing on the upper surface of the base 2, And a pair of upper and lower electrode support arms
3 sets of frames 4A-4C with 3A and 3B held horizontally by a cantilever
A voltage applying part f1 of the first pre-charging device F1 and a voltage applying part f2 of the second pre-charging device F2 mounted on the frame 4A.
And a resistance detection unit r1 of the first insulation resistance test device R1, a current-carrying part ti of the discharge withstand voltage test device T1, a resistance detection unit r2 of the second insulation resistance test device R2, and a voltage application unit of the varistor voltage test device BV.
bv, and a defective product unloading section C2 and a non-defective product unloading section C3. In addition, the first pre-charging device F1, the second pre-charging device F2, the first insulation resistance testing device R1, the discharge withstanding capacity testing device T1,
The second insulation resistance test device R2 and the varistor voltage test device BV are shown in FIG.

Therefore, the above-mentioned mechanisms will be sequentially described in detail. First, the forward transport mechanism C and the drive mechanism D will be described with reference to Figs. A drive mechanism D having a motor 6 is mounted, and the drive mechanism D is provided with the motor 6 for a predetermined time (for example, 7.5
The indexing confirmation microswitch 7 for intermittently controlling the stop for a second time and the driving for a predetermined time (for example, 2.5 seconds) alternately is connected.

Further, a forward transport mechanism C rotated by the drive mechanism D is installed above the drive mechanism D. As for this, 8 is a circular rotary substrate, and 9 is a plurality of bolts (16 in this embodiment) fixed at equal intervals to the outer edge of the substrate 8 as shown in FIGS. ) Support members, 10
Is a circular lid plate fixed to the upper part of the support member 9 group, and these members constitute the forward transport mechanism C, and rotate in the direction of arrow P around the center O of the board 10 in FIG. It is possible.

Next, the gripping mechanism H mounted on each support member 9 of the forward transport mechanism C will be described with reference to FIGS. Reference numerals 11A and 11B denote upper and lower support arms made of an insulating material, which are fastened and fixed to the upper and lower ends of each of the support members 9 by bolts. .About.12P, and they are arranged in a plane radial pattern as a whole as shown in FIG. In this embodiment, the stop positions of the support frames 12A to 12P shown in FIG.
First station ST1 to 16th station ST16
I am trying.

13A is a cylindrical upper gripping electrode vertically inserted into the hole 11a at the tip of each upper support arm 11A, and the upper end thereof is a ring member 14A fixed to the tip of the upper support arm 11A.
It is fitted and fixed to. On the lower surface of the upper gripping electrode 13A, a locking hole 13a for fitting the upper end electrode 15A of the lightning arrester J
Are formed. Reference numeral 16 is a substantially semi-cylindrical locking plate that is fixed to the lower end of the upper gripping electrode 13A, and when the lightning arrester J is attached, the upper end of the lightning arrester J is abutted to lock the upper end electrode 15A of the lightning arrester J. It is easy to fit to 13a.

13B is a rod-shaped lower gripping electrode that is vertically slidably inserted into the hole 11b of the tip portion 1 of the lower support arm 11B so as to correspond to the upper gripping electrode 13A. The receiving member 17 is attached, and a locking hole 17a is formed on the upper surface of the receiving member 17. Further, a tray 17b having a concave cross section is fitted in the locking hole 17a. Reference numeral 18 is a spring interposed between the lower surface of the receiving member 17 and the upper surface of the lower support arm 11B, and biases the lower gripping electrode 13B upward. 14B and 14C are ring members fixed to the lower end portion of the lower gripping electrode 13B, respectively, and they are separated by a predetermined gap G, and when the upper ring member 14B abuts the lower surface of the lower support arm 11B. The upper limit position of the lower gripping electrode 13B is regulated. The above is the configuration of the gripping mechanism H.

As shown in FIGS. 4 and 5, 19 is a bolt 20a and a nut 20 on the upper surface of the tip of the lower support arm 11B near the lower gripping electrode 13B.
Lightning arrester J made of T-shaped conductive metal clamped at b
When the lower gripping electrode 13B is moved downward, the lower part of the arrester J is pushed forward so that the arrester J falls forward. 21 is the bolt 20 at one end
A lead wire that is connected to the head of a and has the other end connected to the ring member 14B by a bolt 22, which is a guide pin 19 and a ring member.
14B is electrically connected.

23A to 23D are 16 stations ST1 as shown in Figs.
~ 4 of ST16, which are provided to project laterally from the support frame 5 so as to correspond to the four stations 1, 2, 15, 16
The first to fourth air cylinders fixed upward to the respective upper ends of the L-shaped holding arms 24A to 24D, and, as shown in FIG. 5, their piston rods 23a.
An engaging plate 23b is fixed to the upper end of the. Then, the ring member 1 fixed to the lower gripping electrode 13B of the gripping mechanism H.
When the stations 4B, 14C are located at the stations S51, ST2, ST15, ST16, the engagement plate 23b enters the gap G between them. The air cylinders 23A to 23D are respectively connected to electromagnetic valves (in the order shown) for controlling the lifting operation of the engaging plate 23b, and further, the engaging valves 23b corresponding to the upper and lower positions of the engaging plate 23b. Upper and lower confirmation limit switches (in the order shown) for confirming the upper and lower positions of the lifting operation of the plywood 23b are provided. The first
2 The foot valves FS1 and FS2 are connected to the solenoid valves of the air cylinders 23A and 23B, respectively.
It composes 1, C1. In addition, the third and fourth air cylinders 23C, 2
3D, carry-out guide pins 19 and carry-out chutes 26A, 26 for defective and good products supported by supporting legs 25 shown in FIG.
B constitutes the carry-out parts C2 and C3 for defective products and good products, respectively. The solenoid valves of the third and fourth air cylinders 23C and 23D are controlled by signals from an operation control unit 27 described later.

Next, the configuration of the voltage applying unit f1 of the first pre-charging device F1 is changed to the sixth,
Referring to FIG. 7, 28A and 28B are the upper and lower portions of the U-shaped cross section made of elastic conductive plates that are fastened with bolts so as to face the tip portions of the upper electrode supporting arm 3A and the lower electrode supporting arm 3B, respectively. It is a fixed electrode, the upper end surface of the upper gripping electrode 13A on the lower surface of the upper fixed electrode 28A,
The lower end surfaces of the lower gripping electrodes 13B are in sliding contact with the upper surfaces of the lower fixed electrodes 28B. 29 is the upper and lower fixed electrodes, respectively
Lead wires connected to 28A and 28B, the other ends of which are connected to the first pre-charging device F1.

The voltage application unit r2 of the second pre-charge device F2, the resistance detection unit r1 of the first insulation resistance test device R1, and the second insulation resistance test device R2
Since the resistance detection unit r2 and the voltage application unit bv of the varistor voltage test device BV have the same configurations as the voltage application unit f1 of the first pre-charge device F1, respectively, the description of those configurations will be omitted. .

LS1 is a first limit switch for confirming the presence or absence of the lightning arrester J attached to the side portion of the frame 4A.
A thin contactor 31 is horizontally supported by a cantilever, and the tip of the contactor 31 can contact the arrester J held by the holding mechanism H. Further, the contact 31 is rotated by the contact with the lightning arrester J.
It is horizontally rotated around 30, and it is designed to confirm the existence of lightning arrester J. The first limit switch LS1
2nd limit switch with the same purpose and similarly configured
As shown in Fig. 1, LS2 is the current carrying part t of the discharge withstand test equipment T1.
The third limit switch LS3 is provided on the frame 4B of i and is provided on the frame 4C of the voltage applying unit bv of the varistor voltage test apparatus BV. These limit switches LS1 to LS3 are connected to a central processing unit CPU32 described later (see FIG. 13).

Next, the structure of the current-carrying portion ti of the discharge withstanding capacity test apparatus T1 will be described with reference to FIGS. 8 and 9. Reference numeral 33 indicates the upper and lower electrode attachments attached to the tips of the upper and lower electrode support arms 3A and 3B. It is a member and is composed of a mounting plate 33a and a cylindrical body 33b vertically fitted in a hole provided in the same plate 33a. Reference numeral 34 denotes upper and lower mounting rods whose base ends are welded to the upper and lower fixed electrodes 28A and 28B and are slidably inserted into the cylindrical body 33b. The upper and lower fixed electrodes 28A and 28B are attached to the upper and lower electrode mounting members 33 by bolts 35a and nuts 35b, respectively. Reference numeral 36 is a spring interposed between the upper fixed electrode 28A and the upper electrode mounting member 33 facing each other, and on the opposite surfaces of the lower fixed electrode 28B and the lower electrode mounting member 33, respectively. , 28B are urged toward each other. Reference numeral 37 is a terminal plate fastened to the side surfaces of the upper fixed electrode 28A and the lower fixed electrode 28B, and the plate is connected to the discharge withstand test apparatus T1 via the lead wire 29.

Next, the automatic control mechanism of the mechanical unit 1 of the test apparatus is
It will be described with reference to the drawings.

Reference numeral 32 denotes a CPU (central processing unit), to which a ROM (read only memory) 38 and a RAM (read / write memory) 39 are connected, and a display 40 and a printer 41 are connected. The CPU 32 includes a first pre-charging device F1 including a voltage applying part f1, a second pre-charging device F2 including a voltage applying part f2, a first insulation resistance test device R1 including a resistance detecting part r1, and a conducting part ti. Discharge withstand test apparatus T1 including a second insulation resistance test apparatus R2 including a resistance detecting section r2, a voltage applying section
Varistor voltage test equipment BV including bv is connected respectively. 27 is an operation control unit connected to the CPU 32. This operation control unit 27 is an indexing confirmation microswitch 7
Connected to a drive mechanism D attached thereto, a solenoid valve (not shown) of the third air cylinder 23C of the defective product unloading section C2, and a solenoid valve (not shown) of the fourth air cylinder 23D of the good product unloading section C3, respectively. , 23D operation is automatically controlled.

Next, the operation of the zinc oxide lightning arrester automatic test apparatus configured as described above will be described. First, the power of the automatic test apparatus is turned on, the drive mechanism D is operated, and the forward transport mechanism C is brought into an intermittent revolving motion state. At this time, when the indexing confirmation micro switch 7 starts indexing and is turned on, the drive motor 6 of the drive mechanism D is activated, and the rotation of the substrate 8 causes the forward transport mechanism C to start a circular motion. . After the drive motor 6 starts for a predetermined time (2.5 seconds),
At the same time when the indexing confirmation micro switch 7 finishes indexing and turns off, the drive motor 6 is stopped by the built-in brake mechanism, and the circular movement of the forward transport mechanism C is stopped for a predetermined time (7.5 seconds). Become. In this way, the forward transport mechanism C carries out an intermittent revolving motion by the intermittent operation (actuation for 2.5 seconds, stop for 7.5 seconds) of the drive motor 6.

Next, in order to perform various tests of the arrester J, the forward transport mechanism C
Is stopped and the support frame 12A shown in FIG. 1 is stopped at the first station ST1, the foot switch FS1 is operated. Then, the solenoid valve (not shown) is activated, and as shown in FIG. 14, the piston rod 2 of the first air cylinder 23A is
3a is lowered and the lower gripping electrode 13B constituting the gripping mechanism H
The ring member 14c is moved downward by the engaging plate 23c entering the gap G between the ring members 14B and 14C at the lower end, and the lower gripping electrode 13B is moved downward against the spring force of the spring 18. . The lowering operation of the piston rod 23a is automatically stopped at the lowermost position by the operation of a lower end confirmation limit switch (not shown).

Here, the arrester J is attached to the gripping mechanism H, and this attachment is performed as follows. For example, the operator holds the lightning arrester J by hand, places the lower end electrode 15B of the lightning arrester J on the pan 17b, and releases the operation of the foot switch FS1. Then, an electrode valve (not shown) is actuated, and as shown in FIG. 15, the piston rod of the first air cylinder 23A is raised, and the urging force of the spring 18 causes the lower gripping electrode 13B.
Rises. Then, when the lower gripping electrode 15B is raised to a position where the lower end outer peripheral tapered surface of the lightning arrester J does not interfere with the upper end portion of the guide pin 19, the lightning arrester J is set in the vertical state and the lower end electrode 15B is fitted to the saucer 17b. When the lower gripping electrode 13B reaches the uppermost end in this state, as shown in FIG. 16, the upper end electrode 15A of the lightning arrester J is engaged with the locking hole 13a of the gripping electrode 13A.
And the lightning arrester J is attached to the gripping mechanism H.

Alternatively, the operator holds the lightning arrester J vertically and sets the top electrode 15
It can be mounted even if the lower gripping electrode 13B stands by until the lower gripping electrode 13B rises to a predetermined position in a state where A is fitted into the locking hole 13a of the gripping electrode 13A.

Although various work procedures for mounting the arrester J are conceivable, this work procedure is not the gist of the present application, and any means may be used as long as the work procedure can be mounted.

The support frame 12A ends the stopped state when a predetermined time (7.5 seconds) elapses, and rotates clockwise (in the direction of arrow P) about the center point O shown in FIG. 22.5 degrees)
It intermittently rotates at the angle of (the same applies hereinafter), and then moves to the second station ST2 corresponding to the second air cylinder 23B and stops.

Also in the second station ST2, the arrester J can be held by the foot switch FS2 with respect to the support frame 12A by the same operation as the operation described in the first station ST1, and for example, the arrester J can be held in the same station ST1. It can be used when it is too late for work or when the lightning arrester J is held at the first and second stations ST1 and ST2 at the same time.

The support frame 12A moves to the third station ST3 in 2.5 seconds after 7.5 seconds have passed, and further reaches 7.5 in the third station ST3.
After stopping for 2 seconds, move to 4th station ST4 in 2.5 seconds.

During the movement, the arrester J gripped by the support frame 12A comes into contact with the contact 31 of the first limit switch LS1 just before the fourth station ST4, and the limit switch LS1 is activated.
Then, the product confirmation signal is transmitted from the limit switch LS1 to the CPU 32, and the CPU 32 executes the first pre-charging device operation program, the second pre-charging device operation program, and the first insulation resistance test operation program which are input in advance in the ROM 38. Read sequentially.

When the support frame 12A stops at the fourth station ST4, as shown in FIGS. 6 and 7, the upper gripping electrode 1 is attached to the lower surface of the upper fixed electrode 28A.
The upper end of 3A is on the upper surface of the lower fixed electrode 23B, and the lower gripping electrode 1
The lower ends of 3B contact each other, and the upper and lower electrodes of the arrester J
15A and 15B are the upper and lower fixed electrodes 28 via the upper and lower gripping electrodes 13A and 13B.
It is electrically connected to A and 28B. At this time, when a drive stop signal is transmitted from the indexing confirmation micro switch 7 of the drive mechanism D to the CPU 32 through the operation control unit 27, the CPU 32 causes the first pre-charge device F1 to execute the first pre-charge device operation program. Based on the operation signal, the first pre-charging device F1 is activated. Then, a voltage is applied to the lightning arrester J gripped by the gripping mechanism H through the upper and lower fixed electrodes 28A and 28B of the voltage application part f1, and pre-charging for performing the first insulation resistance test is performed.

After the support frame 12A has stopped for 7.5 seconds, it moves to the fifth station ST5 in 2.5 seconds and then stops. As with the fourth station ST4, the indexing confirmation microswitch 7 causes the CPU to stop.
The drive stop signal is transmitted to 32. At this time, the CPU 32 transmits an operation signal to the second pre-charge device F2 based on the second pre-charge device operation program already read from the ROM 38, the voltage is applied to the lightning arrester J, and the pre-charge is performed again.

The support frame 12A stops at the fifth station ST5 for 7.5 seconds and then moves to the sixth station ST6 in 2.5 seconds.

When the support frame 12A stops at the sixth station ST6, a drive stop signal is transmitted from the indexing confirmation micro switch 7 to the CPU 32. At this time, the CPU 32 executes the first insulation resistance test operation program based on the first insulation resistance test operation program already read from the ROM 38.
The operation signal is transmitted to the insulation resistance tester R1, the first insulation resistance tester R1 is operated, and a voltage of 100 OV is applied to the arrester J through the upper and lower fixed electrodes 28A and 28B to measure the insulation resistance of the arrester J. . The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is 2000 MΩ or more, the CPU 32 determines that the result is acceptable, and stores a non-defective item determination signal in the RAM 39. Also, 2000 MΩ
If it is below, it is determined to be unacceptable, and later, in the fifteenth station ST15, the lightning arrester J gripped by the supporting frame 12A is used as a defective product determination signal for removing the defective lightning device J by the defective product unloading section C2.
Store in M39. Support frame 12A at 6th station ST6
After stopping for 7.5 seconds, it moves to the 7th station ST7 in 2.5 seconds, and after stopping here for 7.5 seconds, moves to the 8th station ST8 in 2.5 seconds.

The lightning arrester J of the support frame 12A comes into contact with the contact 31 of the second limit switch LS2 immediately before the eighth station ST8, the limit switch LS2 is actuated, and the product confirmation signal is transmitted to the CPU32. Reads out the discharge withstand voltage test operation program and the second insulation resistance test operation program which are input in advance in the ROM 38.

When the support frame 12A stops at the 8th station ST8, the 8th, 9th
As shown in the figure, the upper end of the upper gripping electrode 13A contacts the lower surface of the upper fixed electrode 28A, and the lower end of the lower gripping electrode 13B contacts the upper surface of the lower fixed electrode 28B. The upper and lower electrodes 15A and 15B of J are electrically connected to the upper and lower fixed electrodes 28A and 28B.

A spring 36 is attached to each of the upper and lower fixed electrodes 28A and 28B.
Is provided, the contact with the ends of the upper and lower gripping electrodes 13A, 13B is surely performed, and the impact at the time of contact is mitigated.

At this time, the micro switch 7 for confirming that the drive mechanism D is being indexed
When a drive stop signal is transmitted to the CPU 32 through the operation control unit 27, the CPU 32 transmits an operation signal to the discharge withstanding capacity testing device T1 based on the read discharge withstanding capacity testing operation program, and the discharge withstanding capacity testing device. Activate T1.
Then, a lightning impulse of 6KA, 4 × 10 μs waveform is applied to the lightning arrester J in the eighth station ST8 through both upper and lower fixed electrodes 28A, 28B, and the waveform at that time is detected. The measurement value signal indicating the detected waveform at this time is transmitted to the CPU 32. If there is no disturbance in the waveform of the measurement value signal, the CPU 32 determines that the result is acceptable and stores the same non-defective item determination signal in the RAM 39.
If the waveform is disturbed, it is determined to be unacceptable, and a defective product determination signal for later removing the lightning arrester J supported by the support frame 12A at the 15th station ST15 is stored in the RAM 39.

The support frame 12A stops at the eighth station ST8 for 7.5 seconds and then moves to the ninth station ST9 in 2.5 seconds. After that,
Through the same process, the tenth station ST10 and the eleventh station ST11 are intermittently moved from the ninth station ST9 to the twelfth station ST12.

When the support frame 12A stops at the twelfth station ST12, a drive stop signal is transmitted from the indexing confirmation microswitch 7 of the drive mechanism D to the CPU 32 through the operation control unit 27. At this time, based on the already read second insulation resistance test operation program, the CPU 32 transmits an operation signal to the second insulation resistance test apparatus R2 to operate the test apparatus R2. And, for the lightning arrester J, 100 OV through both upper and lower fixed electrodes 28A, 28B.
Is applied, and the insulation resistance value of the arrester J is measured. The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is 2000 MΩ or more, the CPU 32 determines that the result is acceptable, and stores a non-defective item determination signal in the RAM 39. Also, 2000 MΩ
If it is below, it is determined to be unacceptable, and a defective product determination signal for removing the lightning arrester J supported by the support frame 15A later in the fifteenth station ST15 is stored in the RAM 39.

The support frame 12A stops at the 12th station ST12 for 7.5 seconds, then moves to the 13th station ST13 in 2.5 seconds, and further,
Through the same process, it moves to the 14th station ST14.

The lightning arrester J of the support frame 12A comes into contact with the contactor 31 of the third limit switch LS3 immediately before the fourteenth station ST14, and when the limit switch LS3 operates, a product confirmation signal is sent to the CPU32, and the CPU32 preliminarily writes it to the ROM38. Read the input varistor voltage test operation program.

When the support frame 12A stops at the 14th station ST14, a drive stop signal is transmitted from the indexing confirmation micro switch 7 to the CPU 32, and the CPU 32 transmits an operation signal to the varistor voltage test device BV based on the varistor voltage test operation program. ,
Operate the test equipment BV. Then, a voltage is applied to the arrester J through the upper and lower fixed electrodes 28A and 28B, and the voltage when a current of 1 mA flows through the arrester J is measured. The measurement value signal at this time is transmitted to the CPU 32.

If the measured value signal is within the range of 6.7 KV to 8.0 KV, the CPU 32 determines that the result is acceptable and stores the non-defective item determination signal in the RAM 39. Further, if the measured value signal is out of the range of 6.7 KV to 8.0 KV, it is determined as a failure, and the defective product determination signal removed at the 15th station is stored in the RAM 39.

Even if the measured value signal is within the above range, if the voltage indication is unstable, it is determined to be unacceptable, and the defective product determination signal is similarly stored in the RAM 39.

The support frame 12A stops at the 14th station ST14 for 7.5 seconds, then moves to the 15th station ST15 in 2.5 seconds, and when the instruction frame 12A stops, the drive stop signal of the indexing confirmation microswitch 7 is sent to the operation control unit 27. Through the CPU 32. At this time, CPU 32 is the same support frame already stored in RAM 39.
A plurality of non-defective product determination signals or defective product determination signals regarding the lightning arrester J of 12A are read out.

If at least one of the determination signals is a defective product determination signal, the CPU 32 causes the operation control unit 27 via the operation control unit 27 to fail to the solenoid valve (not shown) of the third air cylinder 23C of the defective product unloading unit C2. Transmits a non-defective signal. Then, the solenoid valve (not shown) of the third air cylinder 23C is operated, and the piston rod 23a is moved downward.

At this time, as shown in FIG.
Stop at ST15, and the ring member 14B, 1 at the lower end of the lower gripping electrode 13B
The engagement plate 23b loosely entered into the gap G between the 4C pushes the ring member 14C downward as shown in FIG. 11 by the lowering of the piston rod 23a, and the lower gripping electrode 13B.
Together with the lightning arrester J, move downward against the elasticity of the spring 18. At the same time, in each of the tests already performed, the high-voltage electric charge applied inside the lightning arrester J flows to the ground side through the ring member 14B, the lower gripping electrode 13B, and the engaging plate 23b, and is removed.

Further, when the lightning arrester J descends, the lower outer peripheral tapered surface of the lightning arrester J contacts the upper end of the guide pin 19. At this time, of the high-voltage charges applied to the arrester J, the arrester J
The electric charge remaining on the surface of the
21, ring member 14B, lower gripping electrode 13B, ring member 14C
Alternatively, it is flowed to the ground side through the engaging plate 23b, the cylinder 23C, etc. and removed.

When the piston rod 23a is further lowered, the upper end of the guide pin 19 presses the lower outer peripheral rear surface of the lightning arrester J, and the lightning arrester J is tumbled forward of the guide pin 19 as shown in FIG. This lightning arrester J is then carried out to a predetermined place along the carry-out chute 26A for defective products.

By the way, each judgment signal calculated by the CPU 32 is
If all are good product determination signals, the CPU 32 outputs the same good product signal as R.
Store in AM39.

The support frame 12A stops at the 15th station ST15 for 7.5 seconds, but a non-defective signal is output, so this 15th station ST15
In No. 15, the robot moves to the next 16th station ST16 in 2.5 seconds without performing the carry-out operation, and when the support frame 12A stops here, the drive stop signal of the indexing confirmation microswitch 7 is sent.
It is transmitted to the CPU 32. At this time, the CPU 32 reads the non-defective product signal stored in the RAM 39, transmits the operation signal from the operation control unit 27 to the solenoid valve (not shown) of the fourth air cylinder 23D of the non-defective product unloading unit C3, and causes the fourth air cylinder 23D to operate. Work, first
The lightning arrester J that has passed all the test strokes is carried out to a predetermined place through the carry-out chute 25B for non-defective products by the same action as the defective product carrying-out section C2 in the 5-station ST15.

After that, the support frame 12A is stopped at the 16th station ST16 for 7.5 seconds, and then moved to the first station ST1 again in 2.5 seconds. Due to this movement, the lower gripping electrode 13B returns to the old state as described above, and the next lightning arrester again. Prepare for J's test. In addition,
The performance test of the arrester J held by the other support frames 12B to 12P is also performed in the same manner as described above.

As described in detail above, a series of performance tests of the arrester J held by the support frames 12A to 12P are all continuously and automatically performed, and the arrester to be rejected as a defective product and the acceptable product The arrester to be packed is automatically selected.

The measured value signal for each test item of each lightning arrester stored in the RAM 39 is displayed on the display 40 at a suitable time and printed by the printer 41.

Next, an embodiment of the first invention will be described with reference to FIG.
It should be noted that members having the same functions as those of the second embodiment of the present invention will be designated by the same reference numerals and description thereof will be omitted, and only different points will be described.

The embodiment of the first aspect of the invention is roughly configured so that the measurement value of each test item is determined artificially and the carrying-out operation is performed artificially.

LS is a limit switch for confirming the presence / absence of the product, which is provided in the vicinity of all fixed electrode support arms 3A, 3B, and is provided for each device F1, F2, R1, T1, R2, BV equipped with a digital display, respectively. Once connected, the device is ready for operation independently. In addition, each of the above devices F1, F2, R1, T1, R2, B
An indexing confirmation microswitch 7 for operating the drive mechanism D is connected to each V, and when a drive stop signal is transmitted from the switch 7 when the drive mechanism D is stopped, the operation of the limit switch LS is performed. Thus, each device in the ready state for operation is operated.

23B to 23G are fifth to seventh air cylinders, respectively, which are installed on the upper ends of the holding arms 24A to 24G projecting from the side of the support frame 9 and connected to the foot switches FS5 to It is designed to move up and down by the operation of FS7. Also, the air cylinders 23E to 23G
Corresponding to, a carry-out chute 26A for defective products is provided.

Next, the operation of the embodiment of the first invention configured as described above will be described. The operation similar to that of the second embodiment will be briefly described.

First, the drive mechanism D is operated, and the intermittent circulating movement (7.5 seconds stop, 2.5 seconds rotation) is started by the operation of the indexing confirmation micro switch 7. Next, when the drive mechanism D is stopped, the first station ST shown in FIG.
In step 1, the foot switch FS1 is operated to grip the untested lightning arrester J on the gripping mechanism H of the support frame 12A. Support frame 12A
Moves to the next second station ST2 in 2.5 seconds after stopping for 7.5 seconds, repeats the same stop and move, further moves to the fourth station ST4 via the third station ST3.

Then, when the support frame 12A is stopped at the fourth station ST4, the first pre-charging device F1 automatically operates and the arrester J
A high voltage is applied to. Next, the lightning arrester J is transferred to the fifth station ST5, where the high voltage is applied again, and then transferred to the sixth station ST6.

At the 6th station ST6, the first insulation resistance test device R
1 operates simultaneously with the stop of the support frame 12A, and the insulation resistance test is automatically performed.

At this time, the operator determines whether or not the arrester J as a product is acceptable based on the measured value digitally displayed on the test apparatus R1. If the arrester J is defective as a result of the determination, the arrester J
Is transported to the next seventh station ST7, and by operating the foot switch FS3 there, it is carried out and removed to a predetermined place via the carry-out chute 26A for defective products.

When the result of the judgment is pass, the lightning arrester J is transported from the seventh station ST7 to the eighth station ST8, and the test is carried out by the discharge withstanding test device T1.

At this time, the operator determines whether the lightning arrester J is acceptable as a product based on the measured value digitally displayed on the test apparatus T1. As a result, when the arrester J is defective, the arrester J is transported to the next ninth station ST9 and the foot switch F
By the operation of S4, the defective product is carried out and removed to a predetermined place through the carry-out chute 26A. In addition, the good arrester J
From 9th station ST9 to 10th and 11th station ST10, S
After passing through T11, it is conveyed to the twelfth station ST12, where the test is performed by the second insulation resistance test device R2. Based on this result, the operator determines whether the lightning arrester J is a product.

The defective lightning arrester J is operated by operating the foot switch FS5 at the next thirteenth station ST13 to carry out the defective chute 26A.
Removed from the factory. The non-defective lightning arrester J is conveyed from the 13th station ST13 to the 14th station ST14, where it is tested by the varistor voltage testing device BV.

At this time, the operator determines whether the lightning arrester J is acceptable as a product based on the measured value digitally displayed on the test apparatus BV. When the determination is defective, the lightning arrester J is transported to the next fifteenth station ST15 and is carried out and removed to a predetermined place via the carry-out chute 26A for defective products by operating the foot switch FS6. When it is judged as non-defective, the arrester J
After 15 stations ST15, then 16th station ST16
Be transported to. And, arrester J that passed all the tests
Is stored in a predetermined location through the carry-out chute 26B for non-defective products by operating the foot switch FS7. All tests are completed by the above process.

Further, both the first and second embodiments can be embodied as follows.

(1) Each device P1, F2, R1, T1, R2, BV and CPU32, ROM38, RA
Store each M39 in a shield case.

In this embodiment, since the high voltage lightning impulse generated in the discharge withstand voltage test is shielded, each device F1, F2, R1, T1, R2, B
It is possible to prevent the influence of lightning impulses on semiconductors such as transistors incorporated in the V and CPU 32, ROM 38, RAM 39.

(2) Insert the upper and lower end electrodes 15A, 15B of the arrester J directly into the holes 11a, 11b of the upper and lower support arms 11A, 11B and hold them so that they can contact the upper and lower fixed electrodes 28A, 28B. In this case, it is assumed that the upper support arm 11A can be attached / detached such that the upper support arm 11A is attached so as to be vertically rotatable.

(3) The circular movement of the forward transport mechanism C is made continuous and low speed, and the upper and lower surfaces of the upper and lower fixed electrodes 28A, 28B are lengthened so that the upper and lower electrodes 15A,
Be able to make electrical contact with 15B.

(4) In the test apparatus of the second invention, the defective product unloading section C2
Are provided immediately after the first insulation resistance test device resistance test part r1, the discharge withstand test device current conducting part ti, the second insulation resistance test device resistance detection part r2 and the varistor voltage test device voltage application part bv, respectively, and Try to remove the lightning arrester J.

EFFECTS OF THE INVENTION As described in detail above, the first invention can concentrate the test place in one place and can perform a series of tests concerning the zinc oxide lightning arrester continuously and efficiently in a short time. It is possible to effectively perform the test of the zinc oxide lightning arrestor, which is expected to increase.

In addition to the effect of the first aspect of the invention, the second aspect of the invention does not require a wide test space and automatically determines whether the product is acceptable or not in a series of zinc oxide lightning arrester inspection items and selects good products or defective products. This has the excellent effect that the number of personnel involved in the test can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a test device mechanism portion of an embodiment of the second invention, FIG. 2 is a side sectional view showing the test device mechanism portion, and FIG. 3 is a test device mechanism of the embodiment of the second invention. FIG. 4 is a plan view showing a gripping mechanism of a portion, FIG. 4 is a longitudinal sectional view of a central portion of FIG.
5 is an enlarged view of a part of the gripping mechanism H and an air cylinder, FIG. 6 is a side view showing a voltage applying section of the pre-charge device of the test apparatus mechanism section, and FIG. 7 is a line XX of FIG. FIG. 8 is a cross-sectional view, FIG.
FIG. 10 is a sectional view taken along line YY, FIG. 10, 11, 12 is a side sectional view showing the progress of release of the arrester, and FIG. 13 is a block diagram showing a configuration of automatic control of the test apparatus, 14, 15, 16 FIG. 17 is a side sectional view showing the process of mounting the lightning arrester on the test apparatus, and FIG. 17 is a plan view showing the test apparatus of the embodiment of the first invention. 1 …… Testing device mechanical part, 3A (3B) …… Upper (lower) electrode support arm, 4A to 4C …… Frame, 6 …… Drive motor, 7 …… Indexing confirmation micro switch, 11A (11B)…
… Upper (lower) support arm, 12A-12P …… Support frame, 13A
(13B) …… Upper (lower) gripping electrode, 14A to 14C …… Ring member, 15A (15B) …… Upper end (lower end) electrode, 17 …… Receiving member, 18 …… Spring, 19 …… Guide pin, 21 ...... Lead wire, 23A to 23G …… Air cylinder, 26A (26B) …… For defective product (good product) carry-out chute, 27 …… Operation control unit, 28A (2
8B) …… Upper (lower) fixed electrode, 31 …… Contactor, 32 ……
CPU, 38 …… ROM, 39 …… RAM, 40 …… Display, 41
...... Printer, C …… Sequential transport mechanism, D …… Driving mechanism, H …… Grip mechanism, J …… Lightning arrester, C1 …… Loading section, C2
…… Defective product unloading section, C3 …… Good product unloading section, G …… Gap, LS
...... Limit switch, ST1 to ST16 …… Station, F
1 (F2) …… First (second) pre-charger, R1 (R2) ……
1st (2nd) insulation resistance tester, T1 ... Discharge withstanding tester, BV ... varistor voltage tester, FS1 to FS7 ... foot switch.

Claims (13)

[Claims] 1. An automatic testing device for a zinc oxide lightning arrester (J), wherein a forward transport mechanism (C) is configured to perform a circular motion by a drive mechanism (D), and a support attached to the cyclic transport mechanism (C). The member (9) and the upper and lower support arms (11A, 11B) horizontally cantilevered at the upper and lower ends of the support member (9) are provided at the tip of the side upper support arm (11A), Also, an upper gripping electrode (13A) having a locking hole (13a) for engaging the upper end electrode (15A) of the lightning arrester (J) on the lower surface, and the upper gripping electrode at the tip of the lower support arm (11B). (13A) is supported so that it can reciprocate vertically, and
It consists of a lower gripping electrode (13B) for engaging the lower end electrode (15B) of the lightning arrester (J) at the upper end, and a spring (18) for urging the lower gripping electrode (13B) to the vertical gripping position. A plurality of sets of gripping mechanisms (H), supported by supporting means (4A to AC) at a predetermined position corresponding to the orbit of the gripping mechanism (H), and temporarily supported by the upper and lower gripping electrodes (13A, 13B). And a plurality of sets of upper and lower fixed electrodes (28A, 28B) electrically connected to the upper and lower end electrodes (15A, 15B) of the arrester (J) through the upper and lower gripping electrodes (13A, 13B). The first fixed electrode (28A, 28B) of each set is connected to three fixed electrodes (28A, 28B) sequentially in the revolving direction.
Insulation resistance tester (R1), discharge withstand voltage tester (T1) and second insulation resistance tester (R2), and further a varistor voltage tester (BV) connected to a separate set of fixed electrodes (28A, 28B) A carry-in section (C1) for mounting the lightning arrester (J) on the gripping mechanism (H), and a carry-out section (C2, C3) for removing the lightning arrester (J) mounted on the gripping mechanism (H). An automatic test device for a zinc oxide lightning arrester, characterized in that 2. A lower support arm (11B) of a gripping mechanism (H).
Is a guide pin as a constituent member of the carry-out section (C2, C3) that uses the descending motion of the lightning arrester (J) so that it is located near the lower gripping electrode (13B) The zinc oxide lightning arrester automatic test apparatus according to claim 1, wherein (19) is provided. 3. The guide pin (19) is electrically connected to the lower gripping electrode (13B) for grounding.
An automatic test device for a zinc oxide lightning arrester according to the item. 4. The loading section (C1) is a cylinder (23A, 23B) for lowering the lower gripping electrode (13B) against the elastic force of the spring (18), and lifting and lowering of the cylinder (23A, 23B). A foot switch (FS1, FS2) for performing an operation, and a ring member (1) that is attached to the piston rod (23a) of the cylinder (23A, 23B) and is fixed to the lower grip electrode (13B).
An automatic test device for a zinc oxide lightning arrester according to claim 1, comprising an engagement plate (23b) which is inserted into the gap (G) of 4B, 14C). 5. The defective (good) and good (good) unloading parts (C2, C3) are cylinders (23C-23G) for lowering the lower gripping electrode (13B) against the elasticity of the spring (18), and the same cylinder. Foot switches (FS3 to FS7) for operating up and down of (23C to 23G), carry-out chute (26A, 26B) for carrying out the arrester (J) to a predetermined position, and the cylinder (23C).
Ring members (14B, 14B, 14B, 14) which are engaged with the piston rod (23a) of (~ 23G) and are fixed to the lower gripping electrode (13B).
The automatic test device for a zinc oxide lightning arrester according to claim 1, further comprising an engagement plate (23b) which is inserted into the gap (G) of C). 6. A substrate (8) constituting a forward transport mechanism (C).
The automatic test device for a zinc oxide lightning arrester according to claim 1, wherein a plurality of gripping mechanisms (H) are radially and equidistantly attached to the outer peripheral portion of the. 7. The automatic tester for a zinc oxide lightning arrester according to claim 1, wherein the forward transport mechanism (C) is adapted to intermittently rotate by the drive mechanism (D). 8. Fixed electrode (28A, 28B) is a pair of upper and lower electrode support arms (3A, 3A, 28A) projecting from a frame (4A-4C) standing as a supporting means so as to face the gripping mechanism (H). 3B)
An automatic test device for a zinc oxide lightning arrester according to claim 1, wherein the automatic test device is attached to the tip of the. 9. A patent in which a first insulation resistance test device (R1), a discharge withstand voltage test device (T1), a second insulation resistance test device (R2) and a varistor voltage test device (BV) are each housed in a shield case. An automatic test device for a zinc oxide lightning arrester according to claim 1. 10. A defective product carry-out section (C2) and a non-defective product carry-out section (C3)
The automatic test device for a zinc oxide lightning arrester according to claim 1, wherein is provided separately. 11. An automatic testing device for a zinc oxide lightning arrester (J), wherein a forward transport mechanism (C) is configured to perform a circular movement by a drive mechanism (D), and the forward transport mechanism (C) is attached to the forward transport mechanism (C). A support member (9) and an upper and lower support arm (11A, 11B) horizontally cantilevered at both upper and lower ends of the support member (9) and having an insulating property formed in a side U-shape Frame (12A-12P)
And provided at the tip of the upper support arm (11A),
An upper gripping electrode (13A) having a locking hole (13a) on the lower surface for engaging the upper end electrode (15A) of the lightning arrester (J)
And a lower end electrode (15) of the lightning arrester (J) is supported at the tip of the lower support arm (11B) so as to be capable of reciprocating in the vertical direction so as to correspond to the upper gripping electrode (13A).
A plurality of pairs of gripping mechanisms (H) each including a lower gripping electrode (13B) for engaging B) and a spring (18) for urging the lower gripping electrode (13B) to a vertical gripping position; The upper and lower gripping electrodes (13A, 13B) are supported by the supporting means (4A to 4C) at a predetermined position corresponding to the orbit of the gripping mechanism (H) and temporarily contact the upper and lower gripping electrodes (13A, 13B). , 13B) and a plurality of sets of upper and lower fixed electrodes (28A, 28B) electrically contacting the upper and lower electrodes (15A, 15B) of the lightning arrester (J), and the fixed electrodes (28A, 28B) of each set. 28B), three sets of fixed electrodes (28A, 28B) are sequentially connected in the orbiting direction.
Insulation resistance tester (R1), discharge withstand voltage tester (T1) and second insulation resistance tester (R2), and further varistor voltage tester (BV) connected to a separate set of fixed electrodes (28A, 28B) A carry-in section (C1) for mounting the lightning arrester (J) on the gripping mechanism (H), and a carry-out section (C2, C3) for removing the lightning arrester (J) mounted on the gripping mechanism (H). A central processing unit CPU (32) for centrally and automatically controlling the drive mechanism (D), the operation of each test device (R1, T1, R2, BV) and the determination of test results, and the central processing unit Read-only memory ROM (38) attached to the CPU (32) to store programs or data such as test methods and reference values in advance, and test results attached to the central processing unit CPU (32) in advance. An acid characterized by comprising a read / write dual-purpose memory RAM (39) for storing Automatic test equipment of zinc arrester. 12. A central processing unit CPU (32), a read-only memory ROM (38) and a read / write memory R
The automatic test device for zinc oxide lightning arrester according to claim 11, wherein each AM (39) is housed in a shield case. 13. The automatic test of zinc oxide lightning arrester according to claim 11, wherein the central processing unit CPU (32) comprises a display (40) for displaying and recording the test result and a printer (41). apparatus.