JP2008253059A - All-weather type operation rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an all-weather type operation rod capable of reducing the weight of the operation rod without degrading rigidity, enabling an operator to easily and safely work even during raining, and eliminating the risk of electric shock. <P>SOLUTION: This is an all-weather type operation rod for performing construction work of an overhead conductor. The all-weather type operation rod 10 includes a fixing pipe 1, which is a base body, an operation pipe 2 rotatably penetrated in the fixing pipe 1, a shaft 3 which is inserted at a lower edge of the operation pipe 2 and fixed so as to integrally rotate; a handle 4, which is fixed at the shaft 3 to rotate the shaft 3; an upper end cover 8, which is disposed at a sliding portion between the fixing pipe 1 and the operation pipe 2 and supports an upper edge of the operation pipe; a lower end cover 8 which supports the lower edge of the operation pipe; a jointing member which joints so as to rotate integrally, with the upper end cover 5 together with the operation pipe 2; and a joint 6, which is fixed at the upper portion of the upper end cover 5 and transmits a rotational force to a tool unit. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an all-weather operating rod that can be used for indirect hot-wire work such as wiring work for an overhead electric wire and that can be safely and reliably operated even in rainy weather.

Indirect operation rods are used in many operations when overhead wiring work, etc. is performed by indirect hot wire operations. There are many types of work performed using the indirect operation rod. For example, the work of holding an overhead electric wire and tightening a bolt of a metal fitting provided on a pillar is an example. In this case, a box spanner operating rod is used to perform bolt tightening work.
FIG. 6 is an explanatory view showing a usage situation of a conventional indirect operation rod. As shown in FIG. 6, an indirect operation rod used for wiring work of overhead wires is known (see Patent Document 1). The work performed using the indirect operation rod is used by an operator riding on a scaffold plate 45 provided on a utility pole. The worker M uses a trunk net 46 for preventing the fall. Then, the worker M fits the box spanner 49 at the tip of the bolt turning operation tool T1 into the head of the bolt 48 that fixes the electric wire to the utility pole, and holds the gripping portion 47 with one hand. By turning the handle 4 with the other hand, the bolt 48 located away from the operator M can be tightened.

  In addition, an insulating operation rod used for electrical work in a live line state that does not cause a power failure is known (see Patent Document 2). The insulating operation rod is made of FRP resin and has a hollow shape, a housing that is provided on the base side of the rod body and that forms a grip portion at the base portion of the rod body, A required number of water cutoff portions provided between the tip member provided at the tip portion of the rod body and the housing, and an obturator device that is watertightly attached to both ends of the hollow portion of the rod body. A water-repellent tube made of a fluorine-based resin provided with an umbrella member having an umbrella body that is widened toward the grip portion side, and a tip end side that is hidden by the widened portion of the umbrella body. The water repellent tube is bonded to the rod body with a waterproof adhesive.

Japanese Patent No. 3168460 ([0031], FIGS. 1 to 4) Japanese Utility Model Publication No. 7-22773 ([Claim 1], FIG. 1 and FIG. 3)

However, the indirect operation rod described above is heavy because the drive shaft of the mandrel uses a solid material, and there is a problem in that it takes heavy labor to work on the scaffolding plate provided on the utility pole.
In addition, the above-mentioned insulation operation rod is not completely satisfied with the countermeasures against inundation in spite of the requirement for specifications based on standards for insulation protective equipment (Ministry of Labor Notification No. 144). There is a risk that rainwater may enter the insulating operation rod and impair the insulation of the member.

  Therefore, the present invention was devised to solve the above-mentioned problems, and it is possible to reduce the weight of the operation rod without reducing the strength. It is an object to provide an all-weather operation rod.

The invention according to claim 1 is an all-weather operation rod (10) for transmitting a rotational force to a tool unit (30) that is detachably connected to perform construction work of an overhead electric wire, and serves as a base. A fixed pipe (1), an operation pipe (2) rotatably inserted in the fixed pipe (1), and a lower end portion of the operation pipe (2) are inserted and fixed so as to rotate integrally. A shaft (3), a handle (4) fixed to the shaft (3) and rotating the shaft (3), and a sliding portion between the fixed pipe (1) and the operation pipe (2) are disposed. An upper end cover (5) for supporting the upper end of the operation pipe (2), and a lower end cover (8) for supporting the lower end of the operation pipe (2),
A connecting member for connecting the upper end cover (5) and the operation pipe (2) so as to rotate together, and an upper part of the upper end cover (5) fixed to the tool unit (30). And a joint (6) for transmitting the power.

The invention according to claim 2 is the all-weather operating rod (10) according to claim 1, wherein the upper end cover (5) includes a sleeve portion (5a) formed in a bottomed cylindrical shape. A boss portion (5b) formed on the upper portion of the sleeve portion (5a), and the sleeve portion (5a) is mounted so as to cover the outer peripheral surface of the upper end of the operation pipe (2) and The moving part,
The connecting member includes a plug (20) inserted into the upper end opening of the operation pipe (2), and the operation pipe (2) and the sleeve portion (5a) penetrating through the plug (20). And a second fixing pin (12) for connecting the two.

  The invention according to claim 3 is the all-weather operating rod (10) according to claim 1 or 2, wherein the fixed pipe (1) or the above-mentioned in the upper and lower end covers (5, 8). An oil seal (17, 17) for preventing inundation is provided at a sliding portion with the operation pipe (2).

  The invention according to claim 4 is the all-weather operation rod (10) according to any one of claims 1 to 3, wherein the upper and lower ends of the operation pipe (2) are opened. Is characterized in that a sealing member (19) for preventing flooding is provided.

  The invention according to claim 5 is the all-weather operation rod (10) according to any one of claims 1 to 4, wherein the fixed pipe (1) and the operation pipe (2) are: It is characterized by comprising an insulating member.

  According to the first aspect of the present invention, the fixed pipe as the base, the operation pipe rotatably inserted in the fixed pipe, and the lower end of the operation pipe are inserted and fixed so as to rotate as a unit. A shaft, a handle fixed to the shaft and rotating the shaft, an upper end cover disposed on a sliding portion between the fixed pipe and the operation pipe and supporting an upper end portion of the operation pipe, and the operation A lower end cover that supports the lower end of the pipe, a connecting member that connects the upper end cover and the operation pipe so as to rotate together, and a joint that is fixed to the upper portion of the upper end cover and transmits rotational force to the tool unit. The two-layer structure of the fixed pipe and the operation pipe can be realized, and the weight of the operation rod can be reduced without reducing the strength. . Further, since the rotation of the handle is transmitted through the shortest path of the operation pipe, the end cover, and the joint, the rotation can be transmitted efficiently, so that work efficiency can be improved.

  According to a second aspect of the present invention, the upper end cover includes a sleeve portion having a bottomed cylindrical shape, and a boss portion formed on the upper portion of the sleeve portion. The sliding part is configured so as to cover an outer peripheral surface, and the connecting member includes a plug inserted in an upper end opening of the operation pipe, and the operation pipe and the sleeve passing through the plug. An end cover that is fitted and fixed to the outer periphery of the upper end of the operation pipe, and a pin that connects the end cover and the connecting member. As a result, smooth rotation can be achieved by the action of the sleeve portion and the connecting member. Further, the rotation of the handle can be smoothly transmitted to the connecting member connected by the end cover and the pin.

  According to the invention according to claim 3, rain water from the upper end of the operation pipe is provided on the sliding portion of the upper and lower end covers with the fixed pipe or the operation pipe by providing an oil seal that prevents water from entering. Can be prevented.

  According to the invention which concerns on Claim 4, since the sealing member which prevents water immersion was arrange | positioned in the opening part of the upper end part of an operation pipe, and a lower end part, while being able to prevent further water immersion, a pipe It is possible to prevent deformation of the shaped operation pipe.

  According to the invention which concerns on Claim 5, the fixed pipe and the operation pipe were comprised with the insulating member, Therefore Even if it is raining, it can work safely and without worry of an electric shock.

The best mode for carrying out the all-weather operating rod of the present invention will be described.
Hereinafter, the “all-weather operation rod” is simply abbreviated as “operation rod”, and the operation rod will be described using a tool unit for a box spanner as an example.
FIG. 1 is a longitudinal sectional view showing the structure of the operation rod. 2 is an enlarged sectional view of a portion A shown in FIG. 1, and FIG. 3 is an enlarged sectional view of a portion B shown in FIG.
Hereinafter, the configuration of the operation rod 10 will be described in detail.
As shown in FIG. 6, the operation rod 10 used in electrical work is often used in a vertically upright state. Therefore, the right side of FIG. 1 will be described as a lower end part and the left side as an upper end part.

  As shown in FIG. 1, a specific example of the operation rod 10 is a waterproof treatment and insulating material having a total length of 1500 mm and an outer diameter φ32 mm of the fixed pipe 1 of 2 layers composed of the fixed pipe 1 and the operation pipe 2. It is the operation stick | rod 10 comprised by these.

The fixed pipe 1 constitutes the main body of the operation rod 10 as shown in FIGS. The operation pipe 2 is inserted into the fixed pipe 1 and is rotatably supported in the hollow portion of the fixed pipe 1. The material of the fixed pipe 1 and the operation pipe 2 is a plastic pipe formed by the FW method, which is light and strong. As shown in FIG. 3, the upper end portion of the operation pipe 2 is rotatably supported by a sleeve portion 5a of the upper end cover 5 as a bearing. As shown in FIG. 2, the lower end portion is rotatably supported by a sleeve portion 8 a of the lower end cover 8. In addition, a rigid vinyl chloride collar 15 (see FIG. 1) is inserted between the fixed pipe 1 and the operation pipe 2 as a spacer. The FW method is an abbreviation for Filament Winding and is a cylindrical jig. A glass fiber or a carbon fiber is wound around and then impregnated with a thermosetting resin to process the pipe.

As shown in FIG. 2, the grip 7 is provided loosely on the outer periphery of the lower end portion of the operation pipe 2. The grip 7 is a hand-held component, and the material is PVC (vinyl chloride).
As shown in FIG. 2, the shaft 3 includes a corner portion (3a) that is fitted into and integrated with the lower end portion of the operation pipe 2, and the corner portion 3a is formed in a hexagonal bar shape, and is detachably fitted to the corner portion 3a. A handle 4 having a matching square hole is attached and fixed integrally by the spring action of the first fixing pin 11.
The handle 4 is provided with a butterfly bolt 4a to prevent the handle 4 from falling off. When the butterfly bolt 4a is tightened, the handle 4 is fixed to the corner 3a of the shaft 3.

As shown in FIG. 3, the joint 6 is fixed to the distal end portion of the operation pipe 2 in order to transmit rotation to a tool unit 30 described later via a connecting member.
The connecting member includes an upper end cover 5 that is fitted and fixed to the outer periphery of the upper end of the operation pipe 2, a plug 20 and the operation pipe 2 that are fitted to the operation pipe 2 and the operation pipe 2, and an upper end cover. 5 and a third fixing pin 13 for integrally connecting the plug 20. Further, the upper end cover 5 has a flange portion 5c formed in the vicinity of the central portion of the outer periphery, and a washer 16 is provided between the protruding portion provided on the inner diameter of the guide 9 integral with the fixed pipe 1 and the flange portion 5c. The washer 16 functions as a thrust bearing.
Therefore, as shown in FIG. 3, the upper end cover 5 covers the upper end portion of the operation pipe 2, and rainwater flowing from above cannot enter the operation pipe 2.

Further, the plug 20 also serves as a reinforcing member in addition to waterproofing, and reinforces the operation pipe 2 from the inside so that the operation pipe 2 is not deformed when the second fixing pin is assembled.
The rubber plug 19 on the upper end side is a sealing member that is fitted in the back of the plug 20. The rubber plug 19 is also fitted into the lower end portion of the operation pipe 2 as shown in FIG.
In the joint 6, a hole 6 b is attached to the boss 5 b of the upper end cover 5, and the joint 6 is fixed integrally by a spring pin of the third fixing pin 13. The socket of the square hole 6 a of the joint 6 is used when connecting to various tool units 30.

As shown in FIG. 3, the guide 9 is a guide component that is connected to the connection member 31 a of the tool unit 30. A washer 16 is inserted into the lower portion of the flange portion 5 c of the upper end cover 5 and is sandwiched between the upper end surfaces of the fixed pipe 1 described above.
On the inner peripheral side of the guide 9, four protrusions 9a are provided on the circumference. The protrusion 9 a is fitted into a U-shaped groove 31 b formed in the tool unit 30, and the nut 38 on the tool unit 30 side is screwed with the screw portion 9 b of the guide 9, so that the tool unit 30 and the operation rod 10 are connected. Integrate and fix.
Further, an oil seal 17 is fixed to the lower portion of the fixed pipe 1 so as to be wrapped by the lower end cover 8 to prevent water from entering.

As shown in FIG. 2, the lower end cover 8 is provided between the fixed pipe 1 and the operation pipe 2 and fulfills the function of the cover and the function of holding the oil seal 17.
The material of the lower end cover 8 also has lubricity, such as polycarbonate (PC), polyamide (Ny), polyacetal (POM), polybutylene terephthalate (PBT), and modified polyphenylene ether (M-PPE). In addition to the five major engineering plastics, high-performance special engineering plastics such as polyether ether ketone (PEEK) and polyphenylene sulfide (PPS) called super engineering plastics, and fluorine-based resins such as Teflon (registered trademark), High molecular weight high density polyethylene (UHMW-HDPE) can be used.

  As shown in FIG. 1, the umbrella member 18 is fitted on the outer periphery of the fixed pipe 1. When the operating rod 10 connected to the tool unit 30 is used, the operating rod 10 is supported in an upward direction and is used in a vertical posture with the handle 4 facing downward. Therefore, when rainwater travels from the tool unit 30 through the fixed pipe 1 and reaches the umbrella member 18, the rainwater is scattered around by the action of the tapered shape of the umbrella of the umbrella member 18. Two umbrella members 18 are arranged to prevent rainwater from flowing directly into the grip 7.

  As shown in FIG. 1, the waterproof cover 21 is attached to the outer periphery of the guide 9 and the upper end of the fixed pipe 1. The material is EPDM (hereinafter referred to as ethylene / propylene rubber), which is an insulating material. The waterproof cover 21a is attached to the outer periphery between the two umbrella members 18 provided at the central portion of the fixed pipe 1, and the material is a heat-shrinkable tube made of fluororesin. The waterproof cover 21b is attached to the outer periphery of the lower end portion of the fixed pipe 1, and is also made of EPDM.

When these are arranged, the operation rod 10 is roughly divided into four parts: a rotating member that transmits rotation to the tool unit 30, a guide member connected to the tool unit 30, a waterproof member, and an electric shock prevention member. Is done.
The rotating member is attached to the operation pipe 2 inserted into the hollow portion of the fixed pipe 1, the shaft 3 fixed to the lower end portion of the operation pipe 2, and the corner portion 3 a of the shaft 3, and a handle for rotating the operation pipe 2. 4, an upper end cover 5 attached to the upper end of the operation pipe 2, and a joint 6 fixed to the upper end cover 5.

  The guide member has a guide 9 fixed to the upper end portion of the fixed pipe 1, a screw portion 9 b for connection to the tool unit 30 is provided on the outer periphery, and four protrusions 9 a for connection and rotation prevention. ing.

  Next, the waterproof member includes oil seals 17 and 17 provided between both ends of the fixed pipe 1 and the operation pipe 2, an upper end cover 5 covering the upper end of the operation pipe 2, and both ends of the operation pipe 2. A rubber plug 19 is fitted as a sealing member with elasticity at the part, and a watertight structure in which a plug 20 having a waterproof function is fitted on the inner peripheral surface of the upper end of the operation pipe 2 prevents rainwater from entering. ing.

The fixed pipe 1 is provided with two umbrella members 18 for separating rainwater. For this reason, since the continuous flow of rainwater is divided in two stages, even if an electric current flows from the electric wire through the rainwater, the current path is interrupted and the risk of an electric shock due to leakage of the rainwater can be prevented.
Furthermore, since the umbrella member 18 is made of a fluororesin, the insulating member has a water repellency. Therefore, the continuous flow of rainwater is divided so as not to be applied to the grip 7.

  Further, as shown in FIG. 2, the inside of the operation pipe 2 is sealed with an oil seal 17, a plug 20, and rubber plugs 19 and 19, so that there is no ingress of water from the outside, and rainwater serves as a conductor. Does not work. Therefore, safer work is possible. The sealing member is preferably made of a material having a waterproof effect such as a high-molecular compound having elasticity such as rubber, fluororubber, fluororesin and the like that prevents rainwater from entering.

FIG. 4 is a cross-sectional view showing an insulating material for an all-weather operating rod. As shown in FIG. 4, the reference numeral shown in the upper part indicates an insulating material that is an electric shock prevention member, and the reference numeral shown in the lower part indicates a conventional material part. In addition, the insulating material is densely hatched so that it can be seen at a glance. All the intermediate parts except the lower end and the upper end are made of an insulating material. When the main parts formed of the insulating material of the operation rod 10 are listed, in addition to the fixed pipe 1 and the operation pipe 2, the grip 7, the lower end cover 8, the oil seals 17 and 17, the umbrella members 18 and 18, the rubber plug 19, 19, plug 20, waterproof covers 21, 21 a, 21 b, collar 15, and washer 16.
The parts formed from the non-insulating material of the conductor are only the shaft 3 and the handle 4 at the lower end, and are only the upper end cover 5, the joint 6 and the guide 9 at the upper end. As a result, even if a current flows through the lower end portion, all the parts underneath are insulating members, so that they are completely cut off. That is, since all 11 parts such as the fixed pipe 1 and the operation pipe 2 constituting the intermediate part are formed of the insulating material, current that may flow from the upper end to the lower end is cut off.

FIG. 5 is an explanatory diagram for explaining the connection between the tool unit and the operation rod.
As shown in FIG. 5, the tool unit 30 is a tool that performs work together with the operation rod 10, and various tool units are prepared. Here, the tool unit 30 for fixing bolts will be described.
The connection method of the tool unit 30 is provided with a connecting member 31 a protruding in a cylindrical shape at the lower end of the tool unit 30. The U-shaped groove 31b of the connecting member 31a and the protruding portion 9a protruding inside the upper end portion of the operating rod 10 are aligned, and the hexagonal bar-like boss portion 32a is inserted into the square hole 6a of the hexagonal hole joint 6, and The screw of the nut 38 and the screw part 9b of the guide 9 are screwed and fixed.

The configuration of the tool unit 30 is such that a first shaft 32 pivotally supported through a casing 31 as a main body is rotatably supported by the casing 31, and a boss portion that fits the joint 6 on the input side of the first shaft 32. 32a is provided. In addition, a second shaft 35 is rotatably provided in a cantilevered manner at a position orthogonal to the first shaft 32.
Since the first shaft 32 and the second shaft 35 are engaged with a pair of bevel gears 33 and 33 and fixed by a set screw 34, the first shaft 32 and the second shaft 35 rotate in conjunction with each other. .
A ball notch 39 is provided at the tip of the first shaft 32 and the second shaft 35, and box spanners 37, 37 are detachably attached.

  Accordingly, the rotation of the operating rod 10 is caused by rotating the joint 6 with the handle 4 and simultaneously rotating in the vertical and horizontal directions from the joint 6 to the first shaft 32 and the second shaft 35 via the boss portion 32a. Accordingly, the box spanner 37 inserted into the tips of the first shaft 32 and the second shaft 35 can be rotated to perform the work.

Here, the operation of the operation rod 10 will be described.
As shown in FIG. 5, the box spanner 37 is inserted and inserted into the head of the bolt that fixes the electric pole wire, and the handle 4 is turned as shown in FIG. 3 rotates the operation pipe 2 via the first fixing pin 11 (see FIG. 2), and the upper end cover 5 integrated by the second fixing pin 12 and the third fixing pin 13 as shown in FIG. As a result, the integrated joint 6 rotates.
Further, the rotation of the joint 6 rotates the bevel gear 33 integral with the first shaft 32 from the boss portion 32a and also rotates the other bevel gear 33 and the second shaft 35 so that the box spanner fitted at the tip end is rotated. 37 is rotated.
As a result, the box spanner 37 of the tool unit 30 can be rotated to the left and right by performing indirect hot-wire work such as wiring work for overhead wires, and bolt tightening and loosening work can be performed.

As described above, since the fixed pipe 1 and the operation pipe 2 are manufactured by the FW method in which glass fiber or carbon fiber is impregnated with a thermosetting resin, it is possible to reduce the weight as well as insulation.
The part end cover is made of an insulating polymer material, so that it is lightweight as well as insulating, and the worker can perform safe work even in rainy weather.

The present invention can be modified and changed in various ways within the scope of this technical idea. The seal member may be an O-ring or the like other than the oil seal, or may be other than that.
Furthermore, the tool unit 30 has been described with an example of a box spanner. For example, when stripping and polishing an electric wire, the tool unit 30 is connected to various tool units such as an electric wire stripper and when cutting an electric wire. Is done.

It is a longitudinal cross-sectional view which shows the all-weather-type operation stick | rod of this invention. It is the A section expanded sectional view shown in FIG. It is the B section expanded sectional view shown in FIG. It is sectional drawing which shows the insulating material of the all-weather-type operation stick | rod of this invention. It is explanatory drawing explaining the connection of a tool unit and an operation stick. It is explanatory drawing which shows the use condition of the conventional indirect operation stick | rod.

Explanation of symbols

1 fixed pipe 2 operation pipe 3 shaft 3a corner 4 handle 4a butterfly bolt 5 upper end cover 5a sleeve (upper part)
5b Boss part 5c Flange part 6 Joint 6a Square hole 6b Hole part 7 Grip 8 Lower end cover 8a Sleeve part (lower part)
9 Guide 9a Protrusion 10 Operation rod 11 First fixing pin 12 Second fixing pin 13 Third fixing pin 15 Collar 16 Washer 17 Seal member (oil seal)
18 Umbrella member 19 Sealing member (rubber plug)
20 Plug 21 Waterproof cover

Claims (5)

An all-weather operating rod that transmits rotational force to a tool unit that is detachably connected and performs construction work for an overhead electric wire,
A fixed pipe as a base;
An operation pipe rotatably inserted in the fixed pipe;
A shaft inserted into the lower end of the operation pipe and fixed to rotate as a unit;
A handle that is fixed to the shaft and rotates the shaft;
An upper end cover that is disposed in a sliding portion between the fixed pipe and the operation pipe and supports an upper end portion of the operation pipe; a lower end cover that supports a lower end portion of the operation pipe;
A connecting member for connecting the upper end cover and the operation pipe so as to rotate together;
A joint that is fixed to an upper portion of the upper end cover and transmits a rotational force to the tool unit;
All-weather operating rod characterized by having The upper end cover has a sleeve portion formed in a cylindrical shape with a bottom and a boss portion formed on the upper portion of the sleeve portion, and the sleeve portion covers the outer peripheral surface of the upper end of the operation pipe. To configure the sliding part,
The connecting member includes a plug inserted in an upper end opening of the operation pipe, a second fixing pin that passes through the plug and connects the operation pipe and the sleeve portion,
The all-weather operation rod according to claim 1, comprising: In the upper and lower end covers, an oil seal for preventing inundation was provided in a sliding portion with the fixed pipe or the operation pipe,
The all-weather operation rod according to claim 1 or 2, wherein A sealing member for preventing water intrusion is disposed in the opening at the upper end and the lower end of the operation pipe,
The all-weather operation rod according to any one of claims 1 to 3, wherein:   The all-weather operation rod according to any one of claims 1 to 4, wherein the fixed pipe and the operation pipe are made of an insulating member.

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