JP6777309B2 - Hot stick support - Google Patents

Description

The present invention relates to a hot stick support for supporting a hot stick used for remote control in indirect live-line work.

In the indirect hot-line work of overhead electric wires, equipment for insulation is indispensable because the work is carried out in the energized state. Of these, the hot stick is indispensable when working from a remote position.

In remote control, it is necessary to perform detailed work using a tip tool connected to a hot stick. However, in the work with the tip tool, the visibility is deteriorated, so that it is difficult to grasp the state of the work target, and in addition, it is not possible to obtain a direct feeling from the work target, which requires skill.

In addition, careless approach or contact with an electric wire leads to a serious accident, so from the viewpoint of ensuring safety, the roles are divided in detail, and the work is carefully performed by a plurality of workers.

By the way, as the tip tool attached to the hot stick, many metal members having excellent strength are used and many of them are heavy, so that they are not easy to handle and the burden on the operator is heavy.

In addition, when workers with different physical constitutions collaborate with each other, they may be forced into an unnatural posture with one arm raised in order to adjust the height for a long time.

As in the above example, if harsh work is continued in a state where muscle fatigue is likely to accumulate, the possibility of an accident increases, which poses a safety problem.

For this reason, auxiliary tools for reducing the burden on workers have been conventionally considered. FIG. 6 shows a state of work using the conventional indirect hot-line tool support 103.

FIG. 6 shows a work using a hot stick 102a (indirect hot-line tool 102) to which the expansion / contraction mechanism 102b is attached. The belt 103a of the worker 101 is provided with a pocket 103b capable of holding the shaft end of the hot stick 102a. As a result, the worker 101 can receive a part of the load of the hot stick 102a by the belt 103a, so that the fatigue of the arm can be significantly reduced. Patent Document 1 describes such an indirect hot-line tool support 103.

JP-A-2010-246226

However, since the expansion / contraction mechanism 102b is attached to the hot stick 102a described above, the weight of the drive unit constituting the expansion / contraction mechanism 102b is added in addition to the tip tool 102c. For this reason, when the work is performed by depositing a part of the load on the belt 103a, the work load is small because it is stable, but when the shaft end is removed from the belt 103a and the work is handled only by the force of the arm, fatigue accumulates. Will be done. In addition to the problem of weight, the telescopic mechanism 102b may become bulky and interfere with peripheral equipment, which limits the movement of the operator and may force the worker to work in an unnatural posture.

Therefore, an object of the present invention is to provide a hot stick support which can stably deposit a part of the load of the hot stick and has a height adjusting mechanism in a low cost configuration.

In order to achieve the above object, the hot stick support of the present invention is a hot stick support that supports a hot stick in indirect hot-line work of an overhead electric wire, and can accommodate the shaft end side of the hot stick. , A tubular holder in which a plurality of slits extending in the longitudinal direction are formed, a shaft end receiving portion that is slidably arranged in the holder and receives the load of the shaft end of the hot stick, and an external portion. A fastening operation for sandwiching the holder between a plurality of bolts that pass through the slit and are screwed into the shaft end receiving portion and one of the bolts and the shaft end receiving portion. It is characterized by including a possible knob and a mounting portion that is provided integrally with the holder and is mounted on a part of the operator's body.

Further, in addition to the above configuration, the hot stick support of the present invention is a belt mounting portion in which the mounting portion is continuously provided on the bottom side of the holder to form a gap capable of accommodating the belt from the width direction. It is characterized by that.

Further, the hot stick support of the present invention is characterized in that, in addition to the above configuration, an angle adjusting portion capable of adjusting the bending angle is provided between the holder and the belt mounting portion.

As described above, according to the present invention, since a plurality of bolts are independently screwed to the shaft end receiving portion via the respective slits, the slits are slid for the bolts without the knob. When adjusted so that it can be freely adjusted, it is possible to switch between locking and unlocking the shaft end receiving portion with respect to the holder simply by operating the knob. Further, since the shaft end receiving portion is supported by a plurality of bolts, the position with respect to the holder is stable, and the shaft end receiving portion can be smoothly moved along the slit.

Further, according to the present invention, in addition to the above effects, the bottom side of the holder can be easily fixed by simply inserting the belt into the gap, so that the hot stick can be stabilized with the belt as a fulcrum.

Further, according to the present invention, in addition to the above effects, since the angle adjusting portion is provided adjacent to the belt attachment portion attached to the worker's belt, the operator can finely adjust the bending angle at hand as needed. Since it can be adjusted, it is possible to prevent being forced into an unnatural posture with a simple operation, and it is possible to reduce the work load.

It is an overall perspective view of the hot stick support which concerns on 1st Embodiment of this invention. It is sectional drawing by partial breakage which cut the holder by line AA of the hot stick support of FIG. It is a perspective view which shows the use state of the hot stick support of FIG. It is a side view of the belt attachment part of the hot stick support of FIG. It is a figure explaining the operation of the height adjusting part of the hot stick support of FIG. It is a figure which showed the state of the work using the conventional indirect live-line tool support.

Hereinafter, the hot stick support according to the embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of the hot stick support 1 according to the first embodiment of the present invention. Further, FIG. 2 shows a cross-sectional view of the holder 2 of the hot stick support 1 of FIG. 1 due to partial breakage cut at the position along the line AA.

With reference to FIG. 1, the hot stick support 1 includes a tubular holder 2. The holder 2 has a sufficient depth and inner diameter to accommodate a part of the hot stick (not shown) on the shaft end side. The holder 2 is formed with two slits 2a and 2b extending in the longitudinal direction (the slits 2b on the back surface are shown in FIG. 2) at positions facing each other in the radial direction.

With reference to FIG. 2 from here, a shaft end receiving portion 4 for receiving the load of the shaft end of the hot stick is provided in the space inside the holder 2. In FIG. 2, the shaft end of the hot stick 102a is represented by a dotted line. Two bolts 6a and 6b arranged so as to penetrate the two slits 2a and 2b are screwed to the shaft end receiving portion 4, respectively. Of these bolts 6a and 6b, only one of the bolts 6a appearing on the front side of FIG. 1 is provided with a knob 8 for fastening operation. The bolt 6b on the back side of FIG. 1 can be operated by using a tool such as a hexagon wrench.

Since it is configured in this way, the bolt 6b on the side where the knob 8 is not provided is arranged with a slight gap so that the shaft end receiving portion 4 can slide along the slit 2b. By operating the fastening state of the bolt 6a from one side with the knob 8, the height of the shaft end receiving portion 4 can be freely adjusted.

An angle adjusting portion 12 is continuously provided on the bottom side of the holder 2. The angle adjusting portion 12 has a structure of being engaged by a chrysanthemum seat, and can be fixed at an arbitrary angle in a specific step by operating a knob 14 provided on the side. Since this knob 14 is provided on the same side as the knob 8 of the shaft end receiving portion 4 described above, for example, while the hot stick 102a is supported by one hand, any operation can be performed with the other hand. Can be done.

On the other hand, two curved notches 2c are formed on the opening side above the holder 2. Since the radius of curvature of the notch 2c is formed to be substantially the same as the outer diameter of the hot stick 102a to be accommodated, the alignment can be easily performed when accommodating the shaft end.

Further, the hot stick support 1 is provided with a belt attachment portion 10 via an angle adjusting portion 12. The belt mounting portion 10 is formed in a U-shaped cross section having two flat plates 10a and 10b arranged substantially in parallel with a gap of about the thickness of the belt. This structure will be described in detail later. In the present embodiment, the connecting portion 10c connecting the two flat plates 10a and 10b intersects the virtual rotating surface (plane parallel to the YZ plane in FIG. 1) drawn by the holder 2 centered on the angle adjusting portion 12. It is provided in the direction of In other words, the angle adjusting unit 12 shown by the alternate long and short dash line is open in any direction in the rotation axis direction. Further, the above-mentioned two notches 2c are formed so as to line up along the above-mentioned rotating surface of the holder 2.

Since it is configured in this way, it can be easily fixed integrally with the operator simply by accommodating the belt in the belt attachment portion 10 by hooking the belt from the upper side in the width direction of the operator with the connecting portion 10c side facing up. be able to. In the present embodiment, two fixing pins 10d and 10e are provided on the opposite side (belt accommodating port side) of the connecting portion 10c, and the lower opening can be closed while the belt is accommodating. .. As a result, it is possible to move the belt in the extending direction and prevent it from falling off from the belt, so that the degree of freedom of work is improved within the range in which the belt can be moved.

Here, the structure of the shaft end receiving portion 4 will be described in detail with reference to FIG.

The shaft end receiving portion 4 includes a base portion 4b having a hollow structure that opens downward. It can be seen that the bolts 6a and 6b inserted through the slits 2a and 2b are independently screwed into the base portion 4b of the shaft end receiving portion 4.

The shaft end receiving portion 4 has a disk-shaped contact plate 4a on the upper side of the base portion 4b. The contact plate 4a is fastened and fixed to the base portion 4b by screws 4c. As a result, the durability of the shaft end receiving portion 4 can be improved. Further, when the contact plate 4a is made of a member having excellent cushioning property, the impact when the hot stick 102a is housed can be alleviated, and the position where the shaft end receiving portion 4 is slipped along the slits 2a and 2b. It is possible to prevent the deviation.

Next, the usage state of the hot stick support 1 of the present embodiment will be described. FIG. 3 is a perspective view showing a usage state of the hot stick support 1. Here, for convenience of explanation, the operator is not shown, and only the positional relationship with the surrounding structure is shown. Specifically, the worker's belt 103a is represented by a dotted line. Further, regarding the hot stick 102a housed in the holder 2, only the configuration on the shaft end side is shown.

The shaft end receiving portion 4 can be slid in the direction indicated by the arrow 50 shown parallel to the holder 2. As a result, not only can the height of the shaft end receiving portion 4 be set in advance, but even during work, while supporting the hot stick 102a with one hand, loosen the knob 8 and hold the knob 8 as it is while holding the shaft end receiving portion. The part 4 can be slid up and down. Therefore, the height and angle of the hot stick 102a can be easily changed on the spot as well as the angle of the angle adjusting unit 12 in the direction of the arrow 51 according to the working position and the physique of the collaborating work partner. Can be done.

After use, if the hot stick 102a is pulled out from the holder 2 and the angle adjusting portion 12 is loosened, the holder 2 can be carried in a state of hanging from the belt mounting portion 10, so that it is portable without hindering other work. Is also excellent.

Next, the configuration of the belt mounting portion 10 will be described. FIG. 4 is a side view of the belt mounting portion 10. As already described with reference to FIG. 1, in the belt mounting portion 10 of the present embodiment, two flat plates 10a and 10b are arranged in parallel to form a gap D having a thickness of about the belt 103a. One ends (upper ends in FIG. 4) of these flat plates 10a and 10b are connected to form a U-shaped cross section. In the example of this embodiment, the gap D is formed through the connecting portion 10c as a spacer, but the flat plates 10a and 10b and the connecting portion 10c may be formed by an integral member.

On the side opposite to the connecting portion 10c (lower end in FIG. 4), fixing pins 10d and 10e urged in the direction of closing the lower opening are provided. The belt 103a can be easily accommodated through the opening opened by pulling the respective fixing pins 10d and 10e against this urging. In the present embodiment, the configuration using the fixing pins 10d and 10e that close the opening by urging is shown as an example, but a bolt fastening structure may be used.

Further, as long as a gap D capable of accommodating the belt 103a can be formed, a clip-type configuration using a leaf spring that is closed when the belt 103a is not accommodated may be used.

Subsequently, the operation of the height adjusting structure of the hot stick support 1 will be described.

FIG. 5 is an enlarged view of the periphery of the shaft end receiving portion 4 in the holder 2. In FIG. 5, the shaft end of the hot stick 102a is represented by a dotted line, and the state in which the load from the hot stick 102a is applied to the shaft end receiving portion 4 in a state where the knob 8 is loosened is shown. Here, the axial direction of the bolts 6a and 6b is indicated by the alternate long and short dash line L. The inclination angle of the alternate long and short dash line L shown in FIG. 5 is schematically shown by slightly emphasizing the pressing pressures F1 and F2 from the washer 7b and the shaft end receiving portion 4 with respect to the holder 2. In reality, it is very small.

Since the shaft end receiving portion 4 is designed to have a size such that it can slide in the holder 2, the outer diameter is slightly smaller than the inner diameter of the holder 2. Therefore, as shown in FIG. 5, if the knob 8 is loosened, the bolts 6a and 6b can be arranged with a slight inclination like the alternate long and short dash line L.

Therefore, in the state where the load from the hot stick 102a is applied to the shaft end receiving portion 4, if the knob 8 should loosen, the knob 8 is tilted as shown in FIG.

That is, the distance between the shaft end receiving portion 4 on the loosened bolt 6a side and the washer 7a is easier to move than the fixed distance between the shaft end receiving portion 4 fixed by the bolt 6b and the washer 7b. In addition, as the weight of the knob 8 is added, the knob 8 side tends to be lowered. Then, when it is inclined like the alternate long and short dash line L, the upper end of the washer 7b on the bolt 6b side is strongly pressed against the outer wall of the holder 2. Further, the lower end of the shaft end receiving portion 4 on the bolt 6b side is strongly pressed against the inner wall of the holder 2. In this way, even when the knob 8 is loosened while receiving the load from the hot stick 102a, the area around the slit 2b of the holder 2 is between the washer 7b on the sliding side and the shaft end receiving portion 4. The wall will be in a state of being bitten, and it will be possible to prevent a sudden fall and work safely.

The configuration described in the above-described embodiment is an example of an embodiment of the present invention, and includes modifications as shown below.

In the above embodiment, the configuration in which the slits 2a and 2b formed in the holder 2 are provided at two locations is shown as an example. However, three or more slits may be formed. In this case, if a slit is formed in an arrangement having a central angle of at least 90 degrees or more in the circumferential direction with respect to the bolt to which the knob is attached, the biting action due to the inclination of the bolt as shown in FIG. 5 is remarkable. Become.

Further, in the above embodiment, a configuration in which a belt attachment portion is used as a attachment portion to be attached to a part of the worker's body is shown as an example. However, as long as the holder can be integrally supported with the operator, the holder may be attached to a portion other than the belt.

Further, in the above embodiment, a configuration in which the contact plate 4a having a substantially constant thickness is provided on the upper side of the shaft end receiving portion 4 is shown as an example. However, the upper side of the shaft end receiving portion 4 does not have to be formed horizontally, and the contact plate 4a does not have to have a constant thickness. For example, the convex portion may be formed unevenly so that the side on which the knob 8 is provided is lifted. When the knob 8 side is formed so as to project upward in this way, when the knob 8 is loosened, the convex portion side preferentially receives a downward load, so that the knob 8 side is downward as shown in FIG. The action of lowering to is more certain.

Further, in the above-described embodiment, a configuration in which the lower part of the shaft end receiving portion 4 has a hollow structure is shown as an example. However, it does not matter if the configuration is full.

Further, in the above embodiment, a configuration in which the contact plate 4a is included on the upper end side of the shaft end receiving portion 4 is shown as an example. However, the shaft end receiving portion 4 may be formed of one member.

Further, in the above-described embodiment, the angle adjusting unit 12 is shown as an example in a configuration in which the angle adjusting unit 12 can rotate in only one direction. However, as long as it can be stably locked at a specific angle, it may be configured to be freely bent 360 degrees like a universal joint.

Since the hot stick support of the present invention has a mounting portion integrally with the holder, it can be used not only for fixing to a worker's belt or the like but also for a belt or the like attached to a utility pole. ..

1 Hot stick support 2 Holder 2a, 2b Slit 2c Notch 4 Shaft end receiving part 4a Abutment plate 4b Base part 4c Screw 6a, 6b Bolt 7a, 7b Washer 8 Knob 10 Belt mounting part (mounting part)
10a, 10b Flat plate 10c Connecting part 10d, 10e Fixed pin 12 Angle adjusting part 14 Knob 100 Electric wire 101 Worker 102 Indirect hot-line tool 102a Hot stick 102b Telescopic mechanism 103 Indirect hot-line tool support 103a Belt 103b Pocket D Gap L Dashed line F1, F2 pressing pressure

Claims (3)

A hot stick support that supports hot sticks in indirect live-line work of overhead electric wires.
A tubular holder that can accommodate the shaft end side of the hot stick and has a plurality of slits extending in the longitudinal direction.
A shaft end receiving portion that is slidably arranged in the holder and receives the load of the shaft end of the hot stick, and
A plurality of bolts that penetrate the slit from the outside and are screwed into the shaft end receiving portion,
A knob that is attached to one of the bolts and can be fastened to hold the holder between it and the shaft end receiving portion.
A mounting portion that is provided integrally with the holder and is mounted on a part of the worker's body.
A hot stick support that features. The hot stick support according to claim 1, wherein the mounting portion is a belt mounting portion which is continuously provided on the bottom side of the holder and has a gap capable of accommodating the belt from the width direction. The hot stick support according to claim 2, wherein an angle adjusting portion capable of adjusting a bending angle is provided between the holder and the belt mounting portion.