JPH047606Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of an insulated operating rod for live lines used in repairing or new construction of power transmission lines, etc.

[Conventional technology]

Normally, renovation or new construction of high-voltage overhead power lines, etc., often involves a series of three types of terminal treatment work: cutting, stripping, and compressing the wires. For each of these tasks, a dedicated hydraulic tool is attached to the insulated operating rod each time, but the structure of the hydraulic tool is different because terminal treatment for large-diameter high-voltage wires requires a large amount of energy. It is expected that it will become complicated and heavy.

Furthermore, these operations were carried out on aerial work vehicles or on utility poles, and were often carried out on live wires without stopping the high-voltage power supply, making them potentially dangerous. Therefore, there has been a demand for a hydraulic tool that is lightweight and compact, has good operability, and can easily replace the dedicated hydraulic tools mentioned above, thereby improving work efficiency.

Therefore, the applicant of the present application previously disclosed a hydraulic peeler having this type of insulated operating rod in Japanese Patent Application No. 89737/1989 (Japanese Patent Application No. 251407/1983).

That is, as shown in FIG. 5, a hydraulic hose 29 is piped into the operating rod 28 from the right end (lower end) of a long, cylindrical insulated operating rod (hereinafter referred to as the operating rod) 28, and a hydraulic hose 29 is connected to the tip of the operating rod 28. The connector 30 is attached, and the male coupler 31A screwed onto the connector 30 and the female coupler 31B on the hydraulic tool 32 side are connected as a pair. A structure was adopted in which the connecting portion was housed within the outer cylinder 33 by fitting. Therefore, when attaching or detaching the hydraulic tool 32, the outer cylinder 33 and the hydraulic tool 3
This is done after removing the outer cylinder 33 by unscrewing the threaded part 35 with 2. In addition, the angle variable joint part 36
was provided on the side of the hydraulic tool 32, and an operating switch (not shown) for operating the hydraulic tool 32 was provided separately from the operating rod 28 and connected to a hydraulic pump (not shown).

[Problem that the invention attempts to solve]

However, as a result of using the conventional operating rod, when replacing it with a dedicated tool for each of the three types mentioned above, the hydraulic coupling part (coupler) connecting the operating rod 28 and the hydraulic tool 32 is attached to the outer cylinder of the operating rod 28. 33, the outer cylinder must be removed with screws each time it is installed or removed, which is inefficient, and the operating switch that operates the hydraulic tool is separate from the operating rod, making it difficult to operate. Two workers were required, making it impossible to improve work efficiency and save labor.

Further, since the variable angle joint portion 36 is provided on the side of the hydraulic tool 32, the entire tool becomes a heavy body, and the center of gravity of the entire tool is located toward the distal end, resulting in difficulty in operability. Further, since the hydraulic hose 29 was also disposed at the right end (lower end) of the operating portion 28, the hose was bent suddenly due to thrusting or the like during handling of the operating rod, which was unfavorable in terms of durability of the hose.

[Means for solving problems]

In order to solve the above problems, the present invention further improves the insulated operating rod of the conventional hydraulic tool,
It was devised with the aim of providing an insulated operating rod with good workability, operability, and work efficiency, and its specific means include (1) a hydraulic tool structure that removably connects an insulated operating rod and a hydraulic tool; Insulated operation for live wires, characterized in that a variable angle joint is provided at the tip of the insulated operation rod, and a hydraulic joint is provided to detachably connect the hydraulic tool to the variable angle joint. Rod.

(2) Preferably, a hydraulic hose connected to the insulated operating rod is disposed on a longitudinal side of the insulated operating rod, and an operating switch for the hydraulic tool is mounted on the insulated operating rod. It is configured as an insulated operating rod for wires.

[Effect]

According to the insulated operating rod for live wires configured as described above, since the hydraulic joint portion (coupler) between the insulated operating rod and the hydraulic tool is provided outside the operating rod, the hydraulic tool can be quickly replaced. In addition, by attaching the operating switch of the hydraulic tool to the operating rod, it is possible to save labor and improve work efficiency.

Furthermore, by providing the variable angle joint on the operating rod side, which was on the tool side, the hydraulic tool itself becomes lighter and its operability is improved.

Further, by arranging the hydraulic hose connected to the operating rod on the longitudinal side of the operating rod, sudden bending of the hose can be prevented.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows, as an example, a mode in which a hydraulic peeler is connected to the insulated operating rod for live wires (hereinafter referred to as the operating rod) of the present invention.

In the figure, the operating rod 1 is formed of a long, cylindrical insulating rod with sufficient insulation resistance, and the right side (lower part) of the operating rod 1 is made of soft resin material to facilitate gripping during use. A cover 2 such as the above is attached. Further, a variable angle joint part 3 is formed at the left end (upper end) of the operating rod 1, and this variable angle joint part 3 is connected to the inner circumference of the connecting member 5 fitted to the tip of the operating rod 1. a joint holder 6 that is threadedly engaged with the part;
It is composed of a joint arm 8 that swings in sliding contact with the side surface of the joint holder 6, and a joint shaft 7 that rotatably connects and supports the joint arm 8 and the joint holder 6. Further, the joint arm 8 is provided with a fixing pin 9 in such a manner that it protrudes toward the joint holder 6 side, and a concave fitting groove 10 is formed on the joint holder 6 side facing the fixing pin 9. By fitting with the tip of the joint arm 8, the joint arm 8 can be fixed coaxially with the operating rod 1. In addition, by pulling up the knob of the fixed pin 9, the joint arm 8 can be swung at any angle. After swinging, the fixed pin 9 is pressed by the spring 9A, fits into the groove 10 of the joint holder 6, and rotates the joint arm 8. The intarm 8 can be fixed. In addition,
As shown in FIG. 2, the joint arm 8 is capable of swinging up to 90 degrees in both directions about the joint shaft 7 as a fulcrum.

Incidentally, each member of the variable angle joint portion 3 is formed with an oil passage for sending pressure oil to a hydraulic tool 19, which will be described later. One side of the oil passage 11 formed in the joint holder 6 communicates with a connector 13 that connects a hydraulic hose 12 and the joint holder 6, which will be described later, and the other side is formed on the circumferential surface of the joint shaft 7 through which the joint holder 6 is inserted. oil passage 14
It communicates with An oil passage 15 branching from the oil passage 14 is formed in the axial direction of the joint shaft 7, and an oil passage 17 is further branched from the oil passage 15 and communicates with an oil passage 16 formed in the joint arm 8. It is formed on the circumferential surface of the joint shaft 7. 18A,
18B is a sealing member such as an O-ring for preventing leakage of pressure oil from the joint shaft 7.

A hydraulic tool 19 is connected to the joint arm 8, and the connection operation between the two is performed by a well-known coupler joint. That is, the female coupler 20A is screwed onto the hydraulic tool 19 side, and the male coupler 2 is screwed onto the joint arm 8 side.
By inserting 0B, connection can be made easily and quickly as shown by the two-dot chain line in the figure.

Note that the hydraulic tool 19 is a modification of the peeler disclosed in Japanese Patent Application No. 60-89737, with only the connecting portion being modified, so a detailed explanation of its internal structure etc. will be omitted.

By the way, a double-insulated operating switch 21 is mounted near the handle of the operating rod 1, and this operating switch 21 is connected to a hydraulic pump (not shown) via a cable 22 to operate the hydraulic tool 1.
This is for controlling the pressure oil sent to 9.
The electrical circuits and the like wired inside the operating switch 21 are constructed using known methods and means. Also,
A hydraulic hose 12 is inserted into the operating rod 1 from the side near the operating switch 21, and its tip is inserted into the tip of the operating rod 1, and the connector 13 is attached thereto.

On the other hand, a female coupler 24 is connected to the other end of the hydraulic hose 12 located outside the operating rod 1 via a connector 23.
is screwed on, so that it is piped to the hydraulic circuit of a hydraulic pump (not shown). By operating the operating switch 21, pressure oil generated by the hydraulic pump is supplied to the hydraulic tool 19.

Next, the operation of this embodiment will be explained.

In order to perform terminal processing of high-voltage electric wires and the like using the hydraulic tool of this embodiment, first, the angle of the hydraulic tool 19 is changed and positioned in accordance with the installation direction of the high-voltage electric wires and the like. The direction of the hydraulic tool 19 can be set over a wide range on a hemispherical surface by rotating the hydraulic tool 19 itself through 360 degrees in the circumferential direction and by swinging the variable angle joint section 3 through 180 degrees. To position the variable angle joint part 3, pull up the knob of the fixed pin 9 to release the fixed state between the joint holder 6 and the joint arm 8, and then rotate the joint arm 8 to a desired angle, and the fixed pin 9 is pressed by the spring 9A. to fix the joint arm 8.

When the push button 21A of the operation switch 21 is turned on when the hydraulic tool 19 positioned in this way grips a high-voltage electric wire or the like, pressurized oil generated by a hydraulic pump (not shown) passes through the hydraulic hose 12 and the operation rod 1 The hydraulic hose 12 is introduced into the connector 13 at the end of the hydraulic hose 12 disposed therein.

The pressure oil introduced into the connector 13 flows through the oil passage 1 of the joint holder 6 which communicates with the connector 13.
1 to the oil passage 14 of the joint shaft 7, and a branch oil passage 15 formed in the axial direction of the joint shaft 7.
and reaches the oil passage 16 of the joint arm 8 through the oil passage 17. And coupler 20B, 20
A is forcedly fed to the hydraulic tool 19 side, and it comes to operate by pressing a piston (not shown) provided on the hydraulic tool 19.

When the terminal processing work is completed, press the operation switch 2.
When the first push button 21B is pressed, the supply of pressure oil is stopped, and the oil flows back through the hydraulic circuit to the hydraulic pump. Then, the piston of the hydraulic tool 19 returns to its current state and is released from the high-voltage electric wire, etc., completing the desired terminal processing work.

In the above embodiment, the hydraulic tool connected to the operating rod 1 is only a peeler as an example, and terminal processing of high-voltage electric wires, etc. can be performed using other tools other than the peeler, such as a hydraulic cutter and a hydraulic compressor. are often used at the same time. Therefore, in this case, by providing the same hydraulic joints (coupler) as above at the respective connecting parts of the hydraulic compressor 26 shown in FIG. 3 and the hydraulic cutter 27 shown in FIG. 4, the connection with the operating rod 1 can be easily and quickly made. This can reduce the time spent on replacement work.

In addition, since the hydraulic tool of this example is often used with live wires, in actual use, in order to prevent an accidental electric shock, the exposed metal part near the handle should be It is used while being concealed by a bellows-shaped cover 25 made of insulating rubber as shown by the two-dot chain line in FIG.

Note that the operating switch of the present invention is not limited to the electrical type as in the above embodiment, and of course may be configured to control the hydraulic pressure using, for example, an air or hydraulic valve.

[Effect of idea]

As is clear from the above description, the insulated operating rod for live wires of the present invention provides the following many practical effects.

(1) The hydraulic joint, which was conventionally located inside the operating rod, is provided at the external tip of the operating rod, making it possible to easily and quickly replace the hydraulic tool.

(2) By mounting the operating switch integrally with the operating rod, it is possible to improve work efficiency and save labor.

(3) Since the variable angle joint, which was conventionally located on the hydraulic tool side, is provided on the operating rod side, it is possible to reduce the weight and cost of the hydraulic tool, and the center of gravity is also moved to the hand side, improving operability.

(4) Since the hydraulic hose is placed on the side of the operating rod, there is no sudden bending during work, resulting in no damage to the hose and improved durability.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing how the insulated operating rod for live lines of the present invention is attached to a hydraulic tool, Fig. 2 is an explanatory diagram of the operation of the variable angle joint, and Fig. 3 is a diagram showing how to attach another hydraulic compressor to the insulated operating rod. FIG. 4 is a diagram showing an example in which a hydraulic cutter is connected to an insulated operating rod, and FIG. 5 is a diagram showing a conventional example in which a hydraulic tool is attached to an insulated operating rod. 1...Insulated operating rod, 3...Angle variable joint part, 5
...Connecting member, 6...Joint holder, 7...
Joint axis, 8...Joint arm, 9...
Fixing pin, 11, 14, 15, 16, 17... Oil path, 12... Hydraulic hose, 19... Hydraulic tool, 2
0A, 20B...Coupler, 21...Operation switch, 25...Insulating cover.

Claims (1)

[Claims for Utility Model Registration] (1) In a hydraulic tool structure in which an insulated operating rod and a hydraulic tool are removably connected, a variable angle joint is provided at the tip of the insulated operating rod, and the variable angle joint is provided. An insulated operating rod for live wires, comprising a hydraulic joint for detachably connecting the hydraulic tool to the insulated operating rod. (2) A utility model registration claim characterized in that a hydraulic hose connected to the insulated operating rod is arranged on the longitudinal side of the insulated operating rod, and an operating switch for the hydraulic tool is attached to the insulated operating rod. Range 1
Insulated operating rod for live wires as described in .