JPH047609Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to the improvement of insulated operating rods used for terminal processing work in repairing or new construction of power transmission lines, etc. The present invention relates to an insulated operating rod structure for live wires, which is provided with a rotation stopper for a hydraulic tool in the section, and which allows an operating switch provided on the operating rod to rotate.

[Conventional technology]

Normally, dedicated hydraulic tools are attached to this type of insulated operating rod for live wires in order to perform various operations such as cutting, stripping, and compressing the ends of electric wires. Generally, an operating switch for hydraulically operating the tool is provided either integrally with the operating rod or separately.
In addition, each of the above-mentioned works is carried out on an aerial work vehicle or on a telephone pole, and is often carried out with live wires without stopping the power supply, which is highly dangerous. It is required that the insulated operating rod can be easily replaced. Therefore, the applicant of the present invention previously disclosed in Utility Model Application No. 61-22374 an insulated operating rod that is lightweight, compact, and has good workability and operability.

[Problem that the invention attempts to solve]

However, the above-mentioned conventional insulated operating rod for live lines has the following problems. In other words, (A), since the insulated operating rod and the hydraulic tool were connected only by a hydraulic coupling (coupler), the hydraulic tool easily rotated at the connection.
It takes a lot of time to position the hydraulic tool along the direction of wire installation and place it in the proper working position.
It was not possible to improve work efficiency. (B), since the operating switch for hydraulically operating the hydraulic tool was fixed on the insulated operating rod, when the insulated operating rod was rotated to position the hydraulic tool relative to the electric wire, the operating switch also rotated with the insulated operating rod. This significantly impeded the operability of the push button switch. Furthermore, there was a risk that the operation of the push button switch would be fumbling, leading to malfunction of the hydraulic tool.

The present invention was developed in order to solve the above problems, and it prevents the rotation of the hydraulic tool connected to the insulated operating rod, facilitates the positioning of the hydraulic tool with respect to the electric wire, and also allows the operating switch to be operated in the insulated operation. The object of the present invention is to provide an insulated operating rod for live wires that can be rotated with respect to the rod and can greatly improve operability and workability.

[Means for solving problems]

As a specific means for achieving the above object, (1) A hydraulic tool is rotatably connected to the distal end, an operation switch is provided near the base end, and the hydraulic tool is operated by the operation switch. In an insulated operating rod that performs live wire treatment, a rotation prevention member is provided at the tip of the insulated operating rod to abut against the hydraulic tool and prevent rotation of the hydraulic tool, and the operating switch is connected to the insulated operating rod. loosely fitted into the operating switch and the insulated operating rod;
(2) Also preferably, an insulated operating rod structure for live wires, characterized in that a locking means is provided for selectively locking and holding the operating switch at a plurality of rotation angle positions with respect to the insulating operating rod. , the locking means includes a ball plunger provided on the side surface of the operating switch and a plurality of recesses provided at predetermined intervals on the side surface of a rotary plate fixed to the insulated operating rod and slidingly in contact with the side surface of the operating switch. This is an insulated operating rod structure for live wires, which is characterized by:

[Effect]

According to the insulated operating rod structure for live wires configured as described above, the rotation prevention member provided at the tip of the insulated operating rod comes into contact with the hydraulic tool connected to the tip of the operating rod to prevent rotation thereof. In addition, the operation switch can be rotated with respect to the insulated operation rod, and can be selectively locked and held at any one of a plurality of predetermined rotation angle positions, so that even if the operation rod is rotated, the operation switch remains unchanged. can be held at a proper operating position, improving operability.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. Fig. 1 is an overall configuration diagram of an insulated operating rod for live wires (hereinafter referred to as the operating rod). A joint arm 3 that can swing 180 degrees around a joint shaft 2 is provided at the left end (left end). This joint arm 3
A hydraulic tool (not shown) is connected by a hydraulic coupling (male coupler) 3A. 4 is a fixing pin for fixing the swinging of the joint arm 3 at an arbitrary angle.

A lever-like rotation prevention plate 5 for preventing rotation of the hydraulic tool is provided on the upper surface of the joint arm 3, with one end thereof fixed by screws 6, 6, and the other end protruding forward of the hydraulic joint 3A. ing. As shown in the enlarged perspective view of FIG. 3, this anti-rotation plate 5 is made of, for example, an elastic steel plate or the like, and is formed to have a wide proximal end and gradually taper toward the distal end as shown in the figure. Both sides of the end portion are bent downward to fit with the joint arm 3, and the tip portion is bent downward parallel to the upper surface. An operating switch 7 is provided below (on the right side) of the operating rod 1, near the handle 1A. This is to control the pressure oil sent to the hydraulic tool by operating the . A hydraulic hose 9 is inserted into the inside of the operating rod 1 from the side, and its tip communicates with the internal oil passage of the joint arm 3. The operating switch 7 includes a rotary plate 12 and a guide plate 1 that are fitted into the operating rod 1 and fixed by screws 10 and 11, respectively, as shown in the enlarged view of FIG.
It is loosely fitted in a rotatable state between the two. The rotary plate 12 is in sliding contact with the side surface of the operating switch 7, and is provided with locking means for selectively locking and holding the operating switch 7 at a plurality of predetermined rotation angle positions with respect to the operating rod 1. As shown in the sectional view of FIG. 5, a plurality of V-shaped locking grooves 14, 14, . Also, a fourth switch is installed on the rotary plate 12 side of the operation switch 7
As shown in the partially cutaway view of the figure, a ball plunger 15, which also serves as a locking means for the operating switch 7, is installed inside the ball plunger 15, and the steel balls 16 of the ball plunger 15 are
The spring 17 urges the V-shaped locking grooves 14, 14, . . . toward the rotary plate 12 side.
It is becoming more and more engaged.

On the other hand, on the side surface of the guide plate 13 that comes into sliding contact with the operation switch 7, as shown in the sectional view of FIG. 6, paragraphs 13A are formed at intervals of 180 degrees in the circumferential direction. A stopper pin 18 fitted into the operation switch 7 is located, and the pin 18 touches the steps 13B, 13 of the paragraph 13A.
When it comes into contact with B, the operation switch 7 will move further (180
(degrees or more) rotation is stopped.

Next, the action will be explained.

Figure 2 shows an example in which a hydraulic compressor, which is one of the terminal processing tools, is connected to the insulated operating rod of the present invention, and the hydraulic joint (male coupler) 3A is attached to the joint arm 3 of the operating rod 1. Hydraulic tools 19
The connection is easily made by inserting the side hydraulic joint (female coupler) 20, and the hydraulic tool 19 can freely rotate in the hydraulic joint.

However, when the hydraulic tool 19 is connected, the flat end portion of the rotation prevention plate 5 fixed to the joint arm 3 comes into sliding contact with the outer peripheral surface of the right narrow diameter portion 19A of the hydraulic tool 19. Rotation of the hydraulic tool 19 is prevented by contacting the formed width across flats for spanner hooking. Therefore, the hydraulic tool 19
Since the positional relationship between the electric wire and the operating rod 1 is fixed, positioning along the installation direction of the electric wire can be easily performed.

The narrow diameter portion 19A that the rotation prevention plate 5 contacts may have a polygonal outer periphery. By doing so, the rotation of the hydraulic tool 19 can be fixed in several stages, making it easier to position the hydraulic tool 19. The rotation operation of the operating rod 1 can be reduced.

Next, the operation of the operation switch will be explained.

In order to arrange the hydraulic tool 19 at an appropriate working position depending on the installation state of the electric wire, the joint arm 3 must be swung or operated while the rotation of the hydraulic tool 19 with respect to the operating rod 1 is arbitrarily fixed by the rotation prevention plate 5. This is done by rotating the lever 1 itself, but when the operating lever 1 is rotated, the operating switch 7, which is normally fixed to the operating lever 1, also rotates, causing the push button switch 7A to rotate. , 7B's operability deteriorates. However, since the operating switch 7 is rotatable with respect to the operating rod 1, even if the operating rod 1 rotates, the operating switch 7 can be freely rotated to the appropriate operating position at the operator's hand and placed at the desired position. It can be locked and held in the push button switches 7A, 7B.
can be easily operated. Further, the stepwise rotation of the operation switch 7 is such that the steel ball 16 of the ball plunger 15 provided on the end face of the operation switch 7 is rotated by the operation rod 1.
This is done by fitting and locking into any part of the V-shaped locking grooves 14, 14, etc. formed in the rotary plate 12, which is fixed to the rotary plate 12, and thereby the operating switch 7 is placed in the desired proper position. It can be selectively locked and held. In addition, in this embodiment, the rotation of the operating switch 7 with respect to the operating rod 1 is adjusted by 180° in consideration of the twisting of the wiring cable 8 and the hydraulic hose 9.
This rotation limit is applied to both ends 13B, 13B of the paragraph 13A formed on the guide plate 13 at an interval of 180 degrees and the operation switch 7.
This is achieved by contact with a stopper pin 18 provided in the. Note that this rotation does not necessarily have to be 180 degrees, and can of course be changed in various ways depending on the type of hydraulic tool and the form of work. Furthermore, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various embodiments may be implemented without departing from the spirit of the invention. For example, in this embodiment, the ball plunger and the V-shaped locking grooves of the rotary plate are used as the stepwise rotation means of the operation switch, but spline-shaped grooves are formed at predetermined intervals on the outer circumferential surface of the rotary plate. A locking bullet plate that engages with this groove may be provided on the operation switch side so that the operation switch can be rotated in stages.

[Effect of idea]

As is clear from the above explanation, according to the insulated operation rod structure for live wires of the present invention, the rotation of the hydraulic tool connected to the tip of the operation rod is fixed by the rotation prevention member. The hydraulic tool can be easily positioned in a short time according to the installation condition of the electric wire, and the gripping condition of the hydraulic tool on the electric wire is performed correctly, so that work can be performed reliably and without mistakes, and work efficiency can be improved. Furthermore, the operation switch is made rotatable and its rotation can be fixed in stages, so even if the insulated operation rod is rotated, the operation switch can be rotated to an easy-to-operate position and held in place. This eliminates fumbling and malfunctioning of switches, allowing safe and reliable work.

[Brief explanation of the drawing]

Fig. 1 is an overall view showing the insulated operating rod for live wires of the present invention, Fig. 2 is a diagram showing a hydraulic compressor connected to the tip of the insulated operating rod as an example, and a state in which it is locked by a rotation prevention plate. 4 is an enlarged perspective view of the rotation prevention plate, FIG. 4 is an enlarged view of the operating switch section, FIG. 5 is a cross-sectional view taken along the line X-X in FIG. 4, and FIG. 6 is a cross-sectional view taken along the Y-Y line. 1...Insulated operating rod, 3...Joint arm,
5... Rotation prevention plate, 7... Operation switch, 12...
...Rotary plate, 13...Guide plate,
14... V-shaped locking groove, 15... Ball plunger, 16... Steel ball, 18... Stopper pin.

Claims (1)

[Claims for Utility Model Registration] (1) A hydraulic tool is rotatably connected to the distal end, an operating switch is provided near the base end, and the operating switch operates the hydraulic tool to perform live wire processing. In the insulated operating rod, a rotation prevention member is provided at the tip of the insulated operating rod, and the rotation prevention member is able to abut against the hydraulic tool and prevent rotation of the hydraulic tool, and the operating switch is loosely fitted into the insulated operating rod; and the operating switch and the insulated operating rod,
An insulated operating rod structure for live wires, characterized in that a locking means is provided that can selectively lock and hold the operating switch at a plurality of rotation angle positions with respect to the insulated operating rod. (2) The locking means includes a ball plunger provided on the side surface of the operating switch and a plurality of recesses provided at arbitrary intervals on the side surface of a rotary plate fixed to the insulated operating rod and slidingly in contact with the side surface of the operating switch. An insulated operating rod structure for live wires as set forth in claim 1 of the utility model registration claim, characterized in that it consists of: