JP4511584B2 - Falling object collection net for work at height - Google Patents

Description

  The present invention is a net that receives fallen objects such as scraps and tools such as wire coverings when working on aerial wires on an aerial work vehicle or working on high poles such as work on poles around a power pole. In addition, the present invention relates to a point-type falling work collection net for work at high places that can be installed at work points.

  Conventionally, in the indirect hot wire method using an insulating operation rod in the above-mentioned work at an altitude, an operation rod (attached and used with various dedicated tools for attaching or grasping tools or materials to the tip of the insulation operation rod ( A single stick), a rotary operation rod (rotary stick) that performs stripping work for electric wire coating and tape winding work are combined in accordance with the work process. For this reason, there is a concern that tools and materials may come off and fall during work, and safety measures against falling objects are required.

  As shown in Patent Document 1, the conventional falling object receiving net is attached to the outer periphery of the utility pole to support work on the pole, but the size of the net is limited and it is slightly off the utility pole. It is not possible to deal with work outside the net range, such as

  Moreover, as shown in Patent Document 2, there is a bucket net to be attached to an aerial work vehicle, but the bucket net interferes with the low-voltage electric wire at the work position of the high-voltage line indirect hot line work, so the net is greatly expanded. I can't use it. If this is expanded to a small size, the length of the insulating operation rod is present, so the bucket is separated from the work location, and the net does not come directly under the work. Therefore, in the case of work at a high place away from the utility pole, in addition to the worker who performs the actual work, the worker provided a net network at the tip of the pole from the ground etc., directly above the work location, In preparation for falling objects, the labor of the workers was tremendous.

JP-A-7-6399 Japanese Patent Laid-Open No. 7-6398

  The present invention was made in consideration of such a conventional technique, and can be fixed directly under an aerial work site, does not interfere with the work, and can be moved according to the work. An object collection net is provided to solve the above problems.

Accordingly, in the invention of claim 1, three or more stays are radially provided on the outer periphery of the lower part of the main pillar that hangs downward from the lower part of the U-shaped gripping body, with the lower end of the main pillar as the center. A falling object collecting net for working at a high place with a net having the outer edge of each stay as an outer peripheral edge, wherein a screw portion provided on the outer periphery of the upper part of the main pillar is connected to a horizontal piece at the lower part of the gripping body. A presser plate that is rotatable around the upper end surface is provided at the upper end of the main pillar protruding from the screw hole, and the presser plate hits a vertical piece of the gripper to prevent rotation. The stays are pivotally supported so that one end of each stay can be rotated in the vertical direction with a space around the outer periphery of the support member having the lower part of the main pillar penetrating through the center hole with play. The stopper prevents rotation downward from the horizontal, and Inserts the lower portion of the main column in the center hole of itself engaged, locks the outer peripheral edge to the outer end of each stay, the lower end of the main pillar is provided an operation knob, aerial A falling object collection net was used.

Further, the invention according to claim 2 is the invention according to claim 1, wherein two guide rods project upward from the opposite locations of the outer periphery of the support body, and the tip ends of the guide rods are on both sides of the grip body. A falling object collecting net for working at high places, which was slidably inserted into a through-hole provided in the above. According to a third aspect of the present invention, in the second aspect of the present invention, the guide rod is provided with a rain umbrella, the outer periphery of the main pillar is crowned, and the lower end thereof is the periphery of the central hole of the support. A fallen-net collection net for working at high places, which was provided with a sheath tube fixed to the outer periphery and a main pillar rain umbrella was provided on the outer periphery of the sheath tube .

According to a fourth aspect of the present invention, in the invention according to any one of the first, second, and third aspects, each of the stays is pivotally supported by a pin on a bearing provided on the outer periphery of the support member with a space therebetween. When the lower edge of each stay hits a spring pin provided outward from the pin of the bearing, the tip of each stay rises upward and is always held in an inclined state, and a load of a certain value or more is applied to each stay. The fall pin collecting net for working at high places was constructed such that the spring pin was bent and the stay was horizontal .

The invention of claim 5 is the invention according to any one of claims 1 , 2, 3 or 4, wherein the net has a bag-like portion that swells downward from the tip of each stay to a location locked to the main pillar. It was aerial for falling objects collecting net is formed for each stay.

According to the first to fifth aspects of the present invention, a grip body having a U-shaped cross section is provided at the upper end, and any horizontal member that can be sandwiched by the grip body, such as an electric wire or a brace, can be installed. . And since the said net spreads a net just under the installed, the fallen object from a work location can be collected reliably. Moreover, if the work location moves, the installation location can be easily changed. Therefore, if it is work on an electric wire, the said holding body should just be moved along an electric wire. In addition, if it is inconvenient to spread the net by installing it on the wire, etc., the stay can be rotated in the vertical direction, so the stay and the net are shrunk along the main column while holding the gripping body on the wire. Can be bundled with tape.

In addition to the above effects, the invention of claim 1 is provided with an operation knob at the lower end of the main column. When the operation knob is rotated, the main column rotates, and the upper horizontal piece of the gripper and the holding plate A horizontal member such as an electric wire or a brace can be sandwiched, so that it can be installed by rotating an operation knob with an insulating operation rod in an indirect hot wire operation. Of course, the operator can also turn the operation knob by hand. According to the invention of claim 2 , since the two guide rods protrude from the support body that supports the stay, and the upper portions of these guide rods are slidably supported by the grip bodies, strong winds are generated. Even if it blows, the support and the net do not rotate, and the falling object can be collected stably.

According to the invention of claim 3 , since the rain fence and the main pillar rain umbrella are provided on each guide rod and the main pillar, the creepage is cut by these rain umbrella and the main pillar rain umbrella, and the lower net Insulation such as is maintained, high-voltage line work can be done even in rainy work.

According to the invention of claim 4 , since each stay is supported by the spring pin at the lower edge outside the shaft fulcrum, the tip of each stay is always inclined upward and inclined. Therefore, when the fallen object hits the stay, it jumps to the inside of the net and falls, so that the fallen object is easily collected by the net. In addition, when a load of a certain value or more is applied to the stay, the stay is horizontal, providing a buffering effect, preventing falling objects from jumping, and more reliably collecting on the net.

In the invention of claim 5 , since the net is configured to swell in a bag shape below each stay, the fallen object is held inside the net, and the fallen object is collected in the net. Is more certain.

  According to the present invention, three or more stays are radially provided on the outer periphery of the lower part of the main pillar that hangs downward from the lower part of the U-shaped gripping body, and the center of each of the stays is centered on the lower end of the main pillar. A falling work collection net for working at high places with a net having an outer edge as an outer peripheral edge, wherein the gripping body inserts a horizontal member into an inside through an opening to freely hold the horizontal member, The stay is a falling object collection net for working at high places, with its base supported in a vertically rotatable manner on the outer periphery of the lower part of the main pillar, and at each work point so that the net is directly under the work location. It can be moved and attached easily.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a front view of the present invention, FIG. 2 is a side view of the present invention, and FIG. 3 is a plan view of the present invention.
Four stays 3 are radially provided on the outer periphery of the lower part of the main pillar 2 that hangs downward from the lower part of the U-shaped gripping body 1, and the outside of each stay 3 is centered on the lower end of the main pillar 2. A net 4 having an end as an outer peripheral edge is stretched.

  The threaded portion 2a provided on the outer periphery of the upper portion of the main pillar 2 is screwed into a screw hole (not shown) penetrating the horizontal piece at the lower portion of the gripping body 1, and is attached to the upper end of the main pillar 2 protruding from the screw hole. A pressing plate 5 that is rotatable about the upper end surface is provided, and the pressing plate 5 is configured to be prevented from rotating by hitting a vertical piece of the gripping body 1. Therefore, when the main pillar 2 is rotated, as shown in FIG. 4, the holding plate 5 rises in the holding body 1, and a horizontal member such as an electric wire or a bracelet is attached to the upper horizontal piece of the holding body 1 and the holding plate 5. It can be gripped with.

5 and 6 are enlarged views of the stay supporting portion below the main pillar, FIG. 5 is a partially omitted plan view of the stay supporting portion at the lower portion of the main pillar, and FIG. 6 is a stay supporting portion at the lower portion of the main pillar. FIG.
A support 6 for supporting the stay 3 is crowned at the lower part of the main pillar 2. The support 6 has a lower portion of the main pillar 2 penetrating through a central hole 6a with play, and is placed on a flange 7 fixed to the lower portion of the main pillar 2. An operation knob 8 is provided at the lower end of the main pillar 2 below the flange 7 to lock the insulating operation rod.

  One end of each stay 3 is pivotally supported by a pin 9a on four bearings 9 provided integrally with the outer periphery of the support 6 with a space therebetween. As shown in FIG. 6, each of these bearings 9 includes a bottom plate 9b, and each stay 3 pivotally supported at one end by the pin 9a does not rotate downward from the horizontal with the bottom plate 9b serving as a stopper. Moreover, since the upper surface of the bearing 9 is open, each stay 3 can be raised. Therefore, all the stays 3 can be started up and the net 4 can be squeezed along the main pillar 2, and when not necessary, a tape or the like can be wound around the sunk net 4 and bundled.

  Further, a spring pin 9c is provided outside each pin 9 from the pin 9a. The lower edge of each stay 3 hits each spring pin 9c, and each stay 3 always maintains a state in which the tip which is a free end rises upward and is inclined. When a load greater than a certain value is applied to each stay 3, the spring pin 9c is bent and the stay 3 becomes horizontal. Therefore, at that time, each stay 3 has a buffering effect, and the fallen object does not jump up unnecessarily and falls into the net 3.

  Further, two guide rods 10 project upward from the opposite side surfaces of the support 6, and the tips of the guide rods 10 are through holes respectively bored in the protruding pieces 11 provided on both sides of the grip body 1. 11a is slidably inserted. Thus, since the two guide rods 10 are slidably locked on both sides of the grip body 1, the support body 6 does not rotate. Further, a rain umbrella 12 is provided on these guide rods 10. A sheath tube 13 covering the lower part of the main pillar 2 is erected from the peripheral edge of the central hole 6a of the support 6 and a main pillar rain umbrella 14 is provided on the sheath pipe 13. These rain umbrellas 12 and main pillar rain umbrellas 14 have the same structure, and drain rain water at the respective locations, so that the rain pillars 12 and main pillar rain umbrellas 14 and below the main pillar 2 and the guide rod 10 Rainwater does not flow, and the insulation of the net 4 can be maintained.

  The net 4 has a substantially box shape with an open upper surface, and is locked to the free ends of the stays 3 at four locations on the upper peripheral edge, and the main pillar 2 penetrates through the center of the net 4. Thus, the net 4 is locked to the main pillar 2 at this location. Thereby, the net 4 forms a bag-like portion that bulges downward from the tip portion of each stay 3 to two main pillars for each stay 3.

  As shown in FIG. 7, when the falling object collecting net A having the above configuration is connected to the work place D on the electric wire C away from the utility pole B, the falling object collecting net A is connected to the electric wire C beside the work place D. When the gripping body 1 is attached and the falling object collecting net A is suspended, even if the connecting body or tool or wire covering of the connecting work falls, they can be collected on the net 3. it can. Further, when this work is completed and work is continued at the work location E, the gripping body 1 of the falling object collecting net A is released from the electric wire C, and these are shifted on the electric wire C to beside the work location D. The falling object collecting net A can be suspended on the work.

  As described above, the falling object collecting net of the present invention can be easily attached to a horizontal member such as an electric wire or a bracelet, and can be detached and attached to another part, so that the attachment place is not selected. Therefore, the collection point of the fallen object of work spreads.

  In the above embodiment, in order to attach the gripping body to the horizontal member, the main pillar 2 is rotated to raise the pressing plate, and the gripping body is gripped between the upper horizontal piece and the pressing plate. However, the present invention is not limited to this, and any structure may be used as long as a horizontal member is inserted from an opening of a U-shaped gripping body and gripped by the gripping body.

It is a front view of Example 1 of this invention. It is a side view of Example 1 of this invention. 1 is a plan view of Embodiment 1 of the present invention. It is a front view which shows the state where the main pillar of Example 1 of this invention was rotated and the presser plate was raised upwards in the holding body. It is an expansion partial omission plan view of the stay attachment location of the main pillar lower part of Example 1 of this invention. It is a partially omitted vertical cross-sectional view of the stay mounting portion at the lower part of the main pillar according to the first embodiment of the present invention. It is a front view which shows the use condition of the falling object collection net | network of Example 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holding body 2 Main pillar 2a Thread part 3 Stay 4 Net 5 Holding plate 6 Support body 6a Center hole 7 Flange 8 Operation knob 9 Bearing 9a Pin 9b Bottom plate 9c Spring pin 10 Guide rod 11 Protruding piece 11a Through-hole 12 Rain umbrella 13 Sheath pipe 14 Main pillar rain umbrella A Falling object collection net B Electric pole C Electric wire D Work location E Work location

Claims (5)

Three or more stays are radially provided on the outer periphery of the lower part of the main pillar that hangs downward from the lower part of the U-shaped gripping body, and the outer ends of the stays are centered around the lower end of the main pillar. It is a falling object collection net for working at high places with a net around it,
The screw part provided on the outer periphery of the upper part of the main pillar is screwed into a screw hole penetrating the horizontal piece at the lower part of the gripping body, and the upper end of the main pillar protruding from the screw hole is rotated around the upper end surface. A free pressing plate is provided, and the pressing plate is configured to be prevented from rotating by hitting a vertical piece of the gripping body,
The stays are pivotally supported so that one end of each stay can be rotated in the vertical direction with a space around the outer periphery of the support body in which the lower part of the main pillar is passed through the center hole with play. Prevented from turning to
The net inserts the lower portion of the main column in the center hole of itself engaged, locks the outer peripheral edge prior Symbol outer end of each stay,
A falling object collecting net for working at high places, characterized in that an operating knob is provided at the lower end of the main pillar . Two guide rods are projected upward from opposite positions on the outer periphery of the support body, and the tips of the guide rods are slidably inserted into through holes provided on both sides of the grip body. The fall collection object collection net | network for work in high places of Claim 1 . Each guide rod is provided with a rain umbrella, and a sheath tube is provided which covers the outer periphery of the main pillar and whose lower end is fixed to the periphery of the central hole of the support, and the main pillar is disposed on the outer periphery of the sheath tube. The falling object collection net for working at high places according to claim 2, wherein a rain umbrella is provided . Each stay is pivotally supported by a pin on a bearing provided at an interval on the outer periphery of the support, and the lower edge of each stay hits a spring pin provided outward from the pin of each bearing. The structure is characterized in that the stay tip is always kept in an upwardly inclined state and the spring pin is bent and the stay becomes horizontal when a load exceeding a certain value is applied to each stay. Item 4. A falling object collecting net for working at heights according to any one of Items 1, 2, or 3 . The said net | network has formed the bag-shaped part swelled below from the front-end | tip part of each stay to the location latched by the main pillar for every stay , The said 1 , 2, 3 or 4 characterized by the above-mentioned. A falling object collection net for working at heights as described in any of the above.

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