JP3157739B2 - Fully automatic tensile testing device for suspension insulators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically performing a tensile test on a suspension insulator having a cap and a pin for automatically performing a tensile test.

[0002]

2. Description of the Related Art Conventionally, as a standard of a suspension insulator, a suspension insulator having a cap and a pin is subjected to a 100% tensile test with a load of 1/2 of a guaranteed load, and a product that passes this tensile test is shipped as a product. Was. Therefore, it was important to perform a tensile test on the suspension insulator. Conventionally, in the tensile test, when attaching the suspension insulator to the tensile test device, the cap-side jig and the pin-side jig of the tensile test device were manually set on the cap and the pin of the suspension insulator, and the tensile test was performed. After the completion of the tensile test, the cap-side jig and the pin-side jig were manually removed.

[0003]

However, FIG.
(A) Cap 5 provided with pin mounting portion 52 as shown in FIG.
In the tensile test device of the ball pin type suspension insulator 55 having the pin 1 having the expansion portion 53 whose tip is expanded, the cap 51 and the pin 54 of the suspension insulator 55, the cap side jig and the pin side of the tension test device are provided. Since it is necessary to perform fitting and detachment by fitting a jig, there is a problem that requires skill. Also, as shown in FIG. 5B, a clevis pin type suspension insulator 65 having a clevis-type cap 62 having a hole 61 and a pin 64 having a hole 63.
In the tensile tester of the above, it is necessary to connect the hole 61 of the clevis-type cap 62 of the suspension insulator 65, the hole 63 of the pin 64, and the cap-side jig and the pin-side jig of the tensile tester with a cotter pin. In addition, there is a problem that a skill is required for desorption.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a tensile testing device capable of automatically performing a tensile test of a suspension insulator, and in particular, to provide a fully automatic tensile test device for a suspension insulator in which a cap and a pin of the suspension insulator are attached to a jig of the tensile testing device. Things.

[0005]

SUMMARY OF THE INVENTION A fully automatic tensile tester for a suspension insulator according to the present invention is a tensile tester for a suspension insulator having a cap and a pin, wherein the upper tension jig and the lower tension jig can be driven separately. Test apparatus main body having a tool, a transfer unit for setting a suspension insulator to be pulled to the tensile test apparatus main unit, and lifting and lowering the suspension insulator on the transfer unit to position the suspension insulator with respect to the tensile test apparatus main unit. An elevating part, a position measuring part for measuring the position of a cap and a pin of a suspension insulator positioned at a predetermined position by driving the elevating part, the tensile tester main body, an upper tensile jig, a lower tensile jig, and transfer And a control unit for controlling the operation of the lifting / lowering unit and the position measuring unit. Based on the control of the control unit, the transfer insulator and the lifting / lowering unit should perform a tensile test on the suspension insulator main body using the suspension insulator. Place In this state, the position of the pin and the cap of the suspension insulator is measured by the position measuring unit, and the upper and lower tensioning jigs and the lower tensioning jig are pinned based on the measured pin and cap position information. It is characterized in that it is set on a cap and a tensile test is performed by a tensile test apparatus main body.

In the present invention, a tensile tester main body, an upper tensile jig, a lower tensile jig, a transfer section,
By controlling the operations of the elevating unit and the position measuring unit collectively by the control unit, it is possible to achieve automation of the tensile test in the tensile test device. Also, in a preferred embodiment,
In order to be compatible with both ball pin type and clevis pin type, by providing two sets of upper tension jig and lower tension jig of predetermined configuration corresponding to both types of suspension insulators, all types of suspension insulators are provided. The tensile test of the suspension insulator can be performed fully automatically.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing an example of the configuration of a fully automatic tensile testing apparatus for a suspension insulator according to the present invention, and FIG.
1 shows a front view thereof, and FIG. 1B shows a side view thereof. In the example shown in FIG. 1, a fully automatic tensile test apparatus 1 includes a tensile test apparatus main body 4 including a base 2 and a frame 3 erected on the base 2, and an upper tensile jig 5 that can be individually driven up and down. And a lower tension jig 6, a transfer unit 8 for setting a suspension insulator 7 to be pulled to the tension device main body 4, and raising and lowering the suspension insulator 7 on the transfer unit 8 so as to lift and lower the suspension insulator 7. Elevating unit 9 for positioning with respect to
The position measuring unit 12 for measuring the positions of the cap 10 and the pin 11 of the suspension insulator 7 positioned at a predetermined position by the drive of the tension tester main body 4, the upper tensile jig 5, the lower tensile jig 6, and the transfer Unit 8, elevating unit 9, and position measuring unit 12
And a control unit 13 for controlling the operation of.

The upper tension jig 5 in this embodiment is used to hold the ball pin of the ball pin type suspension insulator 7.
Claw part 2 which is divided into two parts and can be opened and closed here
1 and a chuck portion 5-2 having a hole 22 through which the cotter pin is inserted, which is used to insert and hold the cotter pin in the hole of the clevis pin of the clevis pin type suspension insulator 7. are doing. Of course, if there is only one type of suspension insulator 7 to be pulled, only one corresponding type of chuck portion 5-1 or 5-2 can be provided. The exchange of the chuck part 5-1 and the chuck part 5-2 is performed by driving the hydraulic cylinder 23. In the above-mentioned example, the chuck portion 5-1 for holding the ball-pin type suspension insulator 7 is constituted by the claw portion 21 divided into two at equal intervals, but the claw divided into three or more at equal intervals. It is preferable to use the part because it is possible to more reliably hold the ball pin.

As the lower tension jig 6 in this embodiment, a jig body 6-1 having a keyway 24 for connection is used, and the suspension insulator 7 is used in both a ball pin type and a clevis pin type. The caps having different shapes are handled by engaging connection pins having different shapes with the key grooves 24. The details will be described later. Also, the lower tension jig 6
Is configured to be able to move up and down by driving the hydraulic cylinders 25-1 and 25-2. Transfer unit 8 in this example
Is configured to slide along a horizontal plane so as to alternately take a tensile test position 26 and a retreat position 27 of the suspension insulator 7. The suspension insulator 7 is replaced at the retracted position 27. The elevating unit 9 in this example has a suspension insulator 7 at its tip.
The suspension insulator 7 can be moved up and down by driving the hydraulic cylinder 28. The position control unit 12 in this example obtains the positions of the cap 10 and the pin 11 of the suspension insulator 7 by a conventionally known method such as image processing.

The control unit 13 in the present embodiment includes a tensile tester main body 4, an upper tensile jig 5, a lower tensile jig 6, a transfer unit 8,
The operation of the elevating unit 9 and the position measuring unit 12 is controlled. In this example, under the control of the control unit 13, the suspension insulator 7 is set by the transfer unit 8 and the elevating unit 9 at a predetermined position where the tensile test of the tensile test device main body 4 is to be performed. Pin 11 and cap 10 of suspension insulator 7
Of the pin 11 and the cap 10
The upper tensile jig 6 and the lower tensile jig 6 are set on the pin 11 and the cap 10 on the basis of the position information, and a tensile test is performed by the tensile tester body 4.

FIG. 2 is a flow chart showing steps in a case where a tensile test is performed by the fully automatic tensile test apparatus of the present invention. Each step will be described with reference to FIG. 2. First, the suspension insulator 7 to be pulled is placed on the transfer portion 8 such that the cap 10 faces downward and the pin 11 faces upward, and the center of the suspension insulator 7 Centering to match the tensile center of
The lifting insulator 9 sends the suspension insulator 7 to a fixed position. Next, after detecting the positions of the cap 10 and the pin 11 of the suspension insulator 7 by the position detecting device 12, based on the detected position information,
The upper tension jig 5 is lowered to grip the pin 11, and the lower tension jig 6 is raised to grip the cap 10. Thereafter, the upper tension jig 5 is released from the pin 11 and the lower tension jig 6 is released from the cap 10. Next, the upper tension jig 5 is raised and the lower tension jig 6
Is lowered, and the suspension insulator 7 is returned to the retracted position.
End the tensile test.

FIG. 3 is a view for explaining the connection state between the lower tension jig 6 and the cap 10 in the ball pin type suspension insulator 7, and FIG. 3 (a) is a plan view thereof.
(B) shows the front view. As shown in FIG. 3, the cap 10 of the ball pin type suspension insulator 7
There is one. Therefore, the attachment portion 31 and the key groove 24 of the lower tension jig 6 are connected by the connection pin 32,
The lower tension jig 6 is set on the cap 10.

The connecting pin 32 has an expanding portion 32-1 that can be inserted into the mounting portion 31 of the cap 10 at one end, and has an expanding end that can be inserted into the key groove 24 as the mounting portion of the lower pulling jig 6 at the other end. It is composed of a diameter portion 32-2. The connection pin 32 is inserted into the pin insertion section 41 based on the position information of the cap 10 and the lower pulling jig 6 measured by the position control section 12.
Thereby, the connection is automatically made between the mounting portion 31 of the cap 10 and the key groove 242 of the lower tension jig 6. The pin insertion portion 41 has an arm 42 that can move along a horizontal plane by driving a hydraulic cylinder (not shown). The connection is performed by attaching the connection pin 32 to the attachment / detachment portion 43 at the tip of the arm 42. After the connection pins 32 are connected, the attachment / detachment section 43 opens the connection pins 32, and the arm 42 returns to the retracted position together with the attachment / detachment section 43, and performs a tensile test.

FIG. 4 is a view for explaining a connection state between the lower tension jig 6 and the cap 10 in the clevis pin type suspension insulator 7. FIG. 4A is a plan view thereof, and FIG. ) Shows the front view. As shown in FIG. 4, the cap 10 of the clevis pin type suspension insulator 7 has a pair of clevis portions 34 each having a hole 33 as an attachment portion. Therefore, the clevis portion 34 and the key groove 24 of the lower pulling jig 6 are connected by the connecting pin 35, and the lower pulling jig 6 is set on the cap 10.

One end of the connection pin 35 can be inserted between a pair of clevis portions 34 of the cap 10, and the connection pin 35 is connected by a cotter pin 36 using a hole provided at the end portion and a hole 33 of the clevis portion 34. The other end is formed of a large-diameter portion 35-2 which can be inserted into the key groove 24 as an attachment portion of the lower pulling jig 6 while being constituted by a possible flat plate portion 35-1. The connection pin 35 is fixed in advance with the enlarged diameter portion 35-2 set in the key groove 24 of the lower tension jig 6, and the cap 10 and the flat plate portion 35 measured by the position measurement unit 12 are set.
Based on the position information of -1, the cotter pin insertion section 45 automatically connects the cotter pin 36 through the hole 33 of the clevis section 34 and the hole of the flat plate section 35-1. The cotter pin insertion portion 45 can have the same configuration as the pin insertion portion 41 except that the cotter pin 36 instead of the connection pin 32 is attached to the attachment / detachment portion 43 of the arm 42 in the pin insertion portion 41 described above.

In practice, the type of the suspension insulator 7 to be pulled does not change much, for example, a ball pin type suspension insulator 7
Ball pin type suspension insulator 7 after tensile test
Since the tensile test is continued, the fully automatic tensile tester 1 of the present invention
Then, only one set of the pin insertion section 41 is provided, and when the cotter pin insertion section 45 is required, the cotter pin 36 is attached to the attaching / detaching section 43 so that the cotter pin insertion section 45 is provided.
It is also configured to be usable.

[0017]

As is apparent from the above description, according to the present invention, a tensile tester main body constituting a tensile tester,
Since the operations of the upper tensile jig, the lower tensile jig, the transfer unit, the elevating unit, and the position measuring unit are collectively controlled by the control unit, automation of the tensile test in the tensile test device can be achieved. In a preferred embodiment, two sets of upper tension jigs and lower tension jigs each having a predetermined configuration corresponding to both types of the suspension insulator are provided so as to correspond to both the ball pin type and the clevis pin type of the suspension insulator. Therefore, the tensile tests of all types of suspension insulators can be performed automatically.

[Brief description of the drawings]

FIG. 1 is a diagram showing the configuration of an example of a fully automatic tensile testing device for a suspension insulator according to the present invention.

FIG. 2 is a flowchart showing steps in a case where a tensile test is performed by the fully automatic tensile test apparatus of the present invention.

FIG. 3 is a diagram for explaining a connection state between a lower tension jig and a cap in a ball pin type suspension insulator.

FIG. 4 is a view for explaining a connection state between a lower tension jig and a cap in a clevis pin type suspension insulator.

FIG. 5 is a view showing an example of a ball pin type and clevis pin type suspension insulator.

[Explanation of symbols]

1 fully automatic tensile tester, 2 bases, 3 frames, 4
Tensile test device main body, 5 Upper tensile jig, 5-1, 5-
2 chuck part, 6 lower tension jig, 7 suspension insulator, 8
Transfer section, 9 lifting section, 10 caps, 11 pins,
12 position measuring section, 13 control section, 21 claw section, 22,
33 holes, 23, 25-1, 25-2, 28 Hydraulic cylinder, 24 keyways, 26 Tensile test position, 27 Evacuation position, 31 Mounting section, 32 Connection pin, 32-1 Expansion section, 32-2, 35- 2 Large diameter part, 34 clevis part,
35 connection pin, 35-1 flat plate part, 36 cotter pin, 41 pin insertion part, 42 arm, 43 detachable part,
45 cotter pin insertion section

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 17/00-17/54

Claims (3)

(57) [Claims] 1. A tension testing device for a suspension insulator having a cap and a pin, comprising: a tension test device main body having an upper tension jig and a lower tension jig which can be driven separately; A transfer part to be set on the test apparatus main body, a lifting part for raising and lowering the suspension insulator on the transfer part to position the suspension insulator with respect to the tensile test equipment main body, and a suspension positioned at a predetermined position by driving the lifting part A position measuring unit for measuring the positions of the cap and the pin of the insulator, and a control unit for controlling the operations of the tensile test device main body, the upper tensile jig, the lower tensile jig, the transfer unit, the elevating unit, and the position measuring unit. The suspension is set by the transfer unit and the elevating unit at a predetermined position where a tensile test is to be performed on the tensile tester body under the control of the control unit. In this state, the suspension insulator is set by the position measurement unit. Pin and measures the position of the cap, on the basis of the measured pin and position information of the cap,
A fully automatic tensile tester for a suspended insulator, wherein the upper tensile jig and the lower tensile jig are set on a pin and a cap, and a tensile test is performed by a tensile tester main body. 2. An upper tensioning jig for gripping said pin, wherein said suspension insulator to be tensioned is of a ball pin type, and said claw portion is divided at equal intervals used for gripping the ball pin and can be opened and closed. 2. A chuck portion having a hole through which a cotter pin used to insert and hold a cotter pin through a hole of the clevis pin when the suspension insulator to be pulled is a clevis pin type. Fully automatic tensile testing equipment for suspension insulators. 3. The connection between the cap and the lower pulling jig is performed by a pin insertion portion, wherein a pin used for the pin insertion portion is
When the suspension insulator to be pulled is a ball pin type, use a pin whose one end can be inserted into the mounting part of the cap and the other end can be inserted into the mounting part of the lower pulling jig. In the case where the suspension insulator to be used is a clevis pin type, it is performed using a pin having a shape such that one end can be connected to the clevis portion of the cap by a cotter pin and the other end can be inserted into a mounting portion of the lower tension jig. 1 or 2
A fully automatic tensile testing device for the described suspension insulator.