JPS60165963A - Clamp fittings for falling preventing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a guideline retainer for a device that protects the safety of workers who ascend and descend utility poles, steel towers, and other high-rise structures by preventing them from falling. The performance required for this type of safety device is to have the strength to withstand the impact load during a fall and arrest.
Not only does it hold and hold a falling human body, but when it is not in use, it does not cause 'R1g' due to lateral shaking due to wind pressure, etc.
It was also necessary to consider the problem of wear and tear on the retaining fittings and guideline attachment parts due to the vibration. In addition, when working on a telephone pole, when working with the guideline wrapped around it and using the safety belt with all your body weight, a considerable load is applied to the guideline, causing slack in the upper and lower pullers 57, resulting in the above-mentioned problem. This could lead to permanent distortion of the guideline.

The present invention takes such a situation into consideration and aims to provide a fall arresting device that is capable of constantly applying a predetermined tension to the kite line in a fall prevention device attached to a utility pole, etc. This is what the purpose is. The purpose of this method is to adjust the elasticity of the spring in advance and rotate the arm to match the predetermined mark when attaching the retaining fitting of the present invention to a utility pole or the like and applying a predetermined tension to the kite line. By applying a predetermined tension to the guideline.

Aspects of the present invention will be described in detail with reference to an embodiment shown in the attached drawings.

As shown in the figure, this embodiment consists of a main body 1, an arm body 2, and a coil spring 3. The main body 1 has a scalp 15 and a leg side 16 to form an approximate T-shape by cutting the scalp 15 and the leg sides 16. A band attachment part 12 is bored in the vicinity at a symmetrical position, a cutout part 17 is provided in the middle part, and a shaft fixing hole 41 is bored inside the cutout part 17. In addition, a notch 18 is also provided in the medium heat part in the middle direction at the tip of the leg side 1G, and a coupling hole 13°13 is provided slightly inside the notch 18.
The scalp 15 is left with the notch 17, and the legs 16 are bent parallel to each other in the same direction, leaving the rp part of the notches 18, and the scalp 15 and the legs 16 form side walls. 11, and the side wall 11 portion formed by bending the scalp 15 due to the difference in notches rlj is wider than the side wall 11 portion formed by bending the leg side 1G. A book 1 ho 1 having an approximate L-shaped side is formed so that a step is formed near the boundary between the scalp 15 part and the leg side 16 part of No. 11. Further, on the side wall 11 having the band attachment portion 12, a telephone pole support piece 14.14 is bent in the opposite direction over its entire length by the depth of the notch 17.
The band attachment part 12 is formed by punching out the other sides, leaving one part on the utility pole side, bending them inward, and welding and joining the opposing edges to form a backing plate 20. The arm body 2 is bent to have a U-shaped cross section, and a coupling hole 24 is bored in the medium heat part of each side piece, and a shaft through hole 21 and a spring bearing part 22 are formed at the bottom of the base end.
This is done by drilling a hole 23 at the bottom of the tip.

The base end side of the arm body 2 is fitted between the side walls 11, 11 of the main body 1, and the two coupling holes 13, 24 of the overlapping U are aligned, and the arm body 2 is rotatably attached. With one end of the coil spring 3 in contact with the spring receiver of the arm body 2 and the plate 44 C in contact with the other end of the coil spring, the arm body 2 is inserted through the locking hole 41 of the main body 1. The spring holder is made by installing a shaft 5 of 1 inch so that it passes through the hole 21 of the plate 4, and screwing it with a nut 42. J3
It is also possible to use a kick spring instead of a coil spring.

To use the present invention constructed as described above, as shown in FIG. 12, tighten the mounting bolts 7, and insert the bolt fixed to the end of the guideline 8 hanging from the top of the utility pole into the guideline attachment part 23 at the tip of the arm part 2, then tighten the nuts 1 to 9. By connecting and continuing to tighten the nut, the intermediate part of the arm part 2 and the main body 1 are connected.
The arm body 2 rotates using the shaft 25 connected to the coil spring 3 as a fulcrum, and the coil spring 3 in the main body 1 is pressed, and the guard line 8 is fixed in a tensioned state with the coil spring 3 contracted. Although not shown, the guideline 8 is attached to the top of the telephone pole (it hangs down from a separate retaining fitting).

High Places 1': The contractor climbs up and down utility poles and steel towers with a separate safety device (not shown) fitted to the kite line 8. In the event of a fall, the safety device immediately grabs the guideline and stops, preventing a further fall.

The present invention is constructed as described above, and even when a temporary fall prevention device is installed on a telephone pole or the like for a long period of time, the elastic force of the spring 3 is always applied to one end of the guard line 8 via the arm body 2. Since the tension is added to the guard line, the guideline 8 will not loosen or become permanently distorted even if wind pressure or loads caused by workers going up and down or during work are applied to the guideline 8, and it will always be in a tensioned state. can be retained. Therefore, the safety device used by the worker can be moved up and down smoothly. In addition, even if the guide line 8 naturally stretches, it can be easily done by tightening the nuts 1-9 that hold the guide line 8 in place, or by tightening the nuts 1-42 of the adjustment shaft 5 that holds the spring 3. You can be nervous about Guideline 8. Further, the present invention utilizes the elastic force of the spring 3 through the guide line 8 through the arm body 2.
Therefore, by changing the position of the support point of the arm body 2, that is, the connecting shaft 25, it is possible to adjust the cart that is added to the guideline using leverage.
TJ- is possible.

Further, in the present invention, the spring receiver of the arm body 2 has a proximal end portion of the portion 22 which is 52 digits inserted into the both side walls 11, 11 of the main body 1 to hold the spring 3 within the main body. It has remarkable effects such as preventing the introduction of foreign matter from the outside and ensuring that a predetermined elasticity is always obtained.

In addition, in order to achieve another object of the present invention, as shown in FIG. 4, an indicator hole 19 is formed in the side wall 11 of the main body 1, and a protrusion 26 is provided in the indicator hole 19 as a mark. The display hole 1
Mark the display line 2 at the base end of the arm body 2 corresponding to 9.
7 is provided with a tension checking device 28.

To use this tension checking device 28, when assembling the retaining fitting of the present invention at a factory, hold the main body 1 fixed to an object, and take the guideline of the arm body 2 (= J part 23).
Set the tension meter in the guideline installation direction of arrow Ah. In this state, align the protrusion 26 of the tension horn confirmation device 28 with the display line 27. In this state, when the nuts 42 of the spring adjustment shaft 5 are sequentially tightened to increase the elastic force of the spring 3, tension is applied to the tension meter accordingly. Install the kite line 8 on the gold plate and set the tension to 100! If it is llf, the tension meter is 100kg.
Adjustment is made by tightening the nut 1-42 until f is reached and increasing the elastic force of the spring 3. When the tension meter shows 100 kgf with the protrusion 2G of the tension checking device 28 and the display line 21 aligned, the adjustment shaft 5 is adjusted to the positions 1 to 42.
is fixed with double oak 1~ etc. As described above, during the assembly process at the factory, the elasticity of the spring is adjusted in advance to match the tension of the guideline 8 before shipment. When attaching this to a telephone pole, etc. and connecting the guideline 8 to it and applying tension to it, adjust the condition of the nut 9 that connects the end of the guideline 8 to the protrusion of the tension checking device 28. By adjusting the part 2C so that it matches the display line 27, a predetermined tension (100 kgf) set at the factory can be applied to the guard line 8, so that it can be applied at each time at the installation site. There is no need to check the tension of the guideline, just check the tension checking device 28,
In addition, since the tension can be adjusted to a constant level, construction work with JR lines can be carried out easily and reliably. In addition, if there is any slack in the guide rod or inlet 8 after installation, it can be easily determined by looking at the tension confirmation device 28, so you can easily and easily adjust the kite without the need for a tension gauge or the like. It has remarkable effects such as adjusting the tension of the line and gauging.

Further, the tension confirmation device 28 is connected to the display hole 19 as shown in FIG.
By providing a scale 29 on the edge of the guideline 8 and aligning the display line 27 of the arm body 2 with the scale, it is also possible to add the tension j of the scale to the guideline 8.

In another embodiment of the tension checking device 28, the mark provided on the arm body 2 corresponds to the mark of the display hole 19 of the main body 1, and the bottle fitting hole 32 of the main body 1 and the bottle receiving hole 30 of the arm body 2 are connected to each other.
At the time of tensioning the guideline, which is drilled so that the guideline overlaps with the main body 1 and the arm (412), make sure to match the marks on the main body 1 and the arm (412), and make sure that the holes 32 A bottle 31 made of synthetic resin is inserted.The pin receiving hole 30 of the arm body 2 overlaps with the bottle insertion hole 32, and passes through both the main body 1 and the arm body 2.The bottle 31 is inserted into the bottle insertion hole 32. The state in which this is possible means that the marks on the main body 1 and the arm body 2 match, which is proof that a predetermined tension has been applied to the guideline, and by fitting the bottle 31, forgetting to adjust the tension can be prevented. It is possible to do so.

In addition, the bottle 31 made of resin has a shape in which the tip becomes thinner when it is inserted so that it can be inserted, and it opens after 1N to prevent it from being removed, so it will not fall off when handled even with a slight vibration. , which has the same lifespan as the present invention.

In the case of the bottle 31 having the above configuration, the tension checking device 28 does not fall (), but in the unlikely event that the bottle 31 falls, the girder line will drop in the opposite direction to the direction of the arrow A'h in Fig. 5. , the bottle 31 made of resin is rotated in conjunction with the rotation of the arm body 2.
The body 1 is crushed between the side walls 11 and its head flies off, but even if it does not result in a fall, in the event that the limbs slip and the person hurriedly grabs a telephone pole, the guy 1 line and its upper part should be fixed. Although there will be no permanent deformation of the metal fittings, if the bottle 31 is torn due to the instantaneous impact, the guideline itself and its upper fixing point may stretch, and in such a case, whether or not the guideline will be re-tensioned. It is possible to confirm.

Moreover, this tension confirmation device 28 does not have the display hole 19,
It is also possible to provide a scale or the like at the end where the side wall 11 of the main body 1 and the arm body 12 overlap.

[Brief explanation of the drawing]

FIG. 1 shows how a fall prevention device using the present invention is installed on a utility pole. FIG. 2 is a plan view of the present invention. FIG. 3 is a partially cutaway front view of the present invention. FIG. 4 is a developed view of the main body 1 of the present invention. FIG. 5 is a diagram showing how the present invention is installed on a utility pole. . 6, 7, and 8 show embodiments of the tension checking device 28 of the present invention. In the figure, 1 is the main body, 2 is the arm body, 3 is the coil spring,
4 is a spring support plate, 5 is an adjustment shaft, 12 is a band handle f1 part,
13.24 is a coupling hole, and 23 is a guideline attachment part. 25 is a shaft, and 28 is a tension checking device. Applicant for the above patents Tokyo Electric Saw Co., Ltd. Nasu Denki Iron Works Co., Ltd. Figure 2 Figure 3 Figure 4 List Figure 5 Figure 8 Figure 6 ] 1 Figure 7 Procedural Amendment (Voluntary) July 19, 1980 2. Name of the invention Retaining bracket for fall prevention device 3. Relationship with the case of the person making the amendment Representative patent applicant: Takino (07954) 8-3360, 679-02
Fujii Denko Fujii Electric Works Co., Ltd. 4, 1220-1 Shimotakino, Chaosuno-machi, Kato-gun, Hyogo Prefecture, Takinocho Shimotakino, Fujii Denko Co., Ltd. 4, Full text of the specification to be amended and full text of the drawings Correction specification 1, Name of the invention Clasp fitting for fall prevention device 2, Scope of Claims 1) The device consists of a main body 1 that is fixed to a telephone pole and an arm body 2 that is rotatably connected to the main body 1, and the arm body is assembled by adding a spring spring to one end of the arm body 2. 2 is adapted to rotate to apply tension to a guideline connected to the other end. 2) Hold the side walls 11 of approximate letter shape oppositely, provide the band attachment portion 12 on the negative side piece, provide the coupling hole 13 on the other side piece to form the main body 1, and form the main body 1 with a shaft through hole at the base end. 21 and the spring receiver are provided with a portion 22, a guideline attachment portion 23 is provided at the tip, and a coupling hole 24 is provided in the center to form the arm body 2, and the arm body 2 is fitted between the side walls 11 and 11 of the main body. The fixed coupling holes 13 and 24 are made to correspond to each other, and the two are rotatably coupled via the shaft, and the spring receiver of the arm body 2 has one end of the coil spring 3 in contact with the portion 22, and the spring receiver is attached to the other end of the plate. 4 and coil spring 3
and the main body 1 with the shaft through hole 21 of the arm body 2 loosely fitted.
The coil spring 3 is connected to the adjustment shaft 5 provided between the plate 4 and the spring holder.
A retaining metal fitting for a fall prevention device according to claim 1', characterized in that it holds a. 3) It is made up of a main body 1 which is fixed to a utility pole and an arm body 2 rotatably connected to the main body 1. The arm body 2 rotates by applying the elasticity of a spring to one end of the arm body 2.
In a device in which tension is applied to the guideline 8 connected to the other end, marks are provided on the main body 1 and the arm body 2 to correspond to each other, and the elasticity of the spring is adjusted by the adjustment shaft 5 so that the predetermined marks correspond to each other. A restraint fitting for a fall prevention device, characterized in that a tension checking device 28 is provided to check the tension of a guideline 8 by 14 knots. 4) The tension confirmation device 28 has an indicator hole 1 drilled in the main body 1.
The retainer for a fall prevention device according to claim 3, characterized in that the tension of the guideline 8 is adjusted by having a structure in which a mark provided on the arm body 2 corresponds to a protrusion or a scale provided on the guideline 9. Metal fittings. 5) The tension confirmation device 28 has an indicator hole 1 drilled in the main body 1.
The mark provided on the arm body 2 corresponds to the protrusion or scale provided on the body 9, and the bottle 31 is fitted into the corresponding pin insertion hole 32 of the body 1 and the pin receiving hole 30 of the arm body 2 at the same time. Detailed description of the invention of a retaining fitting for a fall prevention device as set forth in claim 3, which is characterized in that the tension of the guideline 8 can be maintained constant. This invention relates to a guideline retaining fitting for a device that protects the safety of workers who are going up and down by preventing them from falling. This type of safety device must have the strength to withstand the impact load at the time of a fall, and not only to hold and hold a falling human body, but also to prevent noise from rolling due to wind pressure, etc. when not in use. In addition, it was necessary to consider the problem of wear of the retaining metal fittings and guideline mounting parts due to vibration. In addition, when working on utility poles, when the guideline is wrapped around the rope of the safety belt and the whole body weight is placed on the work, a considerable load is applied to the guideline, causing the upper and lower retaining parts to loosen, causing the guideline to become loose as described above. There is a possibility that permanent distortion may occur. The purpose of the present invention is to provide a fall arrester for a fall arrester to be attached to a utility pole, etc., which is designed to take into account such a situation, and which is capable of constantly applying a predetermined tension to the guideline. It is something to do. Another purpose is to adjust the elasticity of the spring in advance and rotate the arm to match the predetermined marks when attaching the retaining fitting of the present invention to a telephone pole or the like and applying a predetermined tension to the guideline. By applying a predetermined tension to the guideline. Aspects of the invention will now be described in detail with reference to the accompanying drawings and one embodiment thereof. As shown in the figure, this embodiment consists of a main body 1, an arm body 2, and a coil spring 3. A band attaching part 12 is bored at the position, a notch part 11 is provided in the center, and a pivot hole 41 is bored inside the notch part 17. In addition, a notch 18 is also provided at the center in the 1] direction at the tip of the leg side 16, and a coupling hole 13°13 is provided slightly inside of the notch 18. The side wall 11 portion is formed by bending both sides of the notch 18 parallel to each other in the same direction, leaving the middle part of the notch 18, and forming the side wall 11 with the scalp 15 and the leg side 16. The bending width is wider than that of the side wall 11 portion formed by bending the leg side 16, so that the scalp 15 portion of each side wall 11 and the leg side 1
The main body 1 is shaped like a box-shaped side surface so that a step is formed near the boundary of the six parts. In addition, on the side wall 11 having the band attachment part 12, a utility pole support piece 14.14 is provided by bending the entire length in the opposite direction by the depth of the notch 17, and the band attachment part 12 is attached to the utility pole side. Leaving one piece out, the other sides are punched out and bent inward, and the opposing edges are welded together to form the backing plate 20.The arm body 2 is bent to have a U-shaped cross section. A coupling IL 24 is bored in the center of each side piece, a shaft through hole 21 and a spring receiver 22 are formed in the bottom of the proximal end, and a guideline attachment part 23 is formed in the bottom of the tip. The proximal end of the arm body 2 is fitted between the side walls 11, 11 of the main body 1 and overlapped, and the fixed coupling holes 13, 24 are aligned and rotatably attached.The spring of the arm body 2 With one end of the coil spring 3 in contact with the part 22 of the receiver and the plate 4 of the spring receiver in contact with the other end of the coil spring 3, the shaft stopper hole 41 of the main body 1 is inserted.
The spring receiver is constructed by providing an adjustment shaft 5 so as to pass through the plate 4 through the shaft through hole 21 of the arm body 2, and then screwing a nut 42 thereto. Note that it is also possible to use a kick spring instead of the coil spring. To use the present invention having the above configuration, as shown in FIG.
Place the utility pole band 6 on the specified part of the lower part of the band attachment part 1.
2, and then tighten the mounting bolt 7 to attach it. After inserting the bolt fixed to the end of the guideline 8 hanging from the top of the utility pole into the guideline attachment part 23 at the tip of the arm part 2, tighten the nut 9 to connect it. By continuing to tighten the nut, the shaft 25 that connects the intermediate part of the arm part 2 and the main body 1 becomes a fulcrum, and the arm part 2 rotates, pressing the coil spring 3 in the main body 1. When the coil spring 3 is contracted, the guide line is tightened. 8 is fixed in a stretched state. Incidentally, as shown in FIG. 1, the guideline 8 hangs down from a separate retaining fitting attached to the top of the utility pole. Helmet workers go up and down telephone poles and steel towers with a safety device (not shown) that they carry separately fitted to Guideline 8, but if they slip and fall while going up or down, they should be immediately taken care of. The safety device grabs the guideline and stops the vehicle, preventing it from falling. The present invention is constructed as described above, and even when the fall prevention device is installed on a utility pole or the like for a long period of time, the elasticity of the spring 3 is always applied to one end of the guideline 8 via the arm body 2 to maintain the tension of the guideline. As a result, the guideline 8 does not loosen or become permanently distorted even if wind pressure, loads caused by workers going up and down, and during work are applied to the guideline 8, and the guideline 8 always maintains a tensioned state. can. Therefore, the safety device used by the worker can be moved up and down smoothly. In addition, even if the guideline 8 naturally elongates, the guideline 8 can be held back for 6 seconds.
The guideline 8 can be easily tensioned by tightening the nut 9 that holds the spring 3, or by tightening the nuts 1 to 42 of the adjusting shaft 5 holding the spring 3. Further, in the present invention, since the elastic force of the spring 3 is transmitted to the guideline 8 via the arm body 2, by changing the position of the support point of the arm body 2, that is, the connecting shaft 25, the elastic force of the spring 3 is transmitted to the guideline 8 using a lever action. The applied load can be adjusted. Further, in the present invention, the base end portion of the spring receiver of the arm body 2 having the portion 22 is fitted into the side walls 11, 11 of the body 1 to hold the spring 3 within the body. It has remarkable effects such as preventing the intrusion of foreign objects from the outside and ensuring that a predetermined elasticity is always obtained. In addition, in order to achieve another object of the present invention, FIG. As shown in FIGS. 10 and 11, an indicator hole 19 is formed in the side wall 11 of the main body 1, a protrusion 26 is provided in the indicator hole 19 as a mark, and an arm body 2 corresponding to the indicator hole 19 is provided. Tension confirmation device 28 with a display line 21 as a mark at the base end of the tension confirmation device 28
and configure it. To use this tension horn confirmation device 28, when assembling the retaining fitting of the present invention at a factory, set the spring 3 in a free length state, hold the main body 1 fixed to an object, and use the guideline attachment part of the arm body 2. 23, set the load converter in the direction of the arrow. In this state, align the protrusion 26 of the tension check device 28 with the display line 27 and sequentially tighten the nut 42 of the spring adjustment shaft 5 to increase the elastic force of the spring 3, and the load converter will display the corresponding amount. . Now, if the installation tension of Guideline 8 is 100 kg, the display on the load converter is 1.
The elastic force of the spring 3 is adjusted by tightening the nut 42 until the weight reaches 00 kg, and when the protrusion 26 of the tension checking device 28 and the display line 27 are aligned, the spring is tightened to prevent the nut 42 of the adjustment shaft 5 from loosening. Pass the pin through the adjustment shaft 5, or
Or fix it with double nuts etc. After the load is removed, the arm body 2 will be in a rotated state due to the spring 3, but since the position of the nut 42 is fixed, the desired installation tension can be ensured by matching the tension checking device. In this manner, the elasticity of the spring is adjusted in advance to the tension of the guideline 8 during the assembly process at the factory before shipment. When attaching this to a utility pole or the like and connecting the guideline 8 to it, and applying tension to it, adjust the tightening state of the nut 9 that connects the end of the guideline 8 to the protrusion 26 of the tension checking device 28 and the display line. 21, the predetermined tension (100 kgf) set at the factory can be applied to the guideline 8, so there is no need to check the tension of the guideline each time at the installation site. Since the tension can be easily adjusted to a constant level just by checking the device 28, the installation work can be carried out easily and reliably. In addition, if the guideline 8 is loosened after installation, this tension checking device 28
Since this can be easily determined by looking at the guideline tension, the tension of the guideline can be easily and easily adjusted on the spot without the need for a tension meter or the like. Further, the tension checking device 28 is connected to the display hole 1 as shown in FIG.
It is also possible to provide a scale 29 on the edge of the guideline 8 and align the display line 27 of the arm body 2 with the scale, thereby applying the tension of the scale to the guideline 8. Further, as another embodiment of the tension checking device 28, a mark provided on the arm body 2 corresponds to a mark of the display hole 19 of the body 1, and a bottle fitting hole 32 of the body 1 and a pin receiving hole 30 of the arm body 2 are connected to each other.
When the marks on the main body 1 and the arm body 2 correspond to each other during tensioning of the guideline at the site, and when the task of applying a predetermined tension force is completed, a synthetic resin is inserted into the pin insertion hole 32 to confirm this. Insert the bottle 31. The pin receiving hole 30 of the arm body 2 overlaps with the pin insertion hole 32, and passes through both the main body 1 and the arm body 2. This state in which the bottle 31 can be inserted means that the marks on the main body 1 and the arm body 2 match, which is proof that a predetermined tension has been applied to the guideline, and the tension can be adjusted by inserting the bottle 31. It is possible to prevent forgetting. In addition, the bottle 31 made of resin has a shape in which the tip becomes thinner when it is inserted so that it can be inserted, and it opens after being inserted to prevent it from being pulled out, and the bottle 31 does not fall off even with a slight vibration. It has the same lifespan. The bottle 31 having the above structure is not only used as the tension checking device 28, but also in the event of a fall, the guideline will be lowered in the direction opposite to the direction of the arrow 6 in FIG. Due to the rotation, the bottle 31 made of resin is crushed between the side walls 11 of the main body 1 and its head flies off, but even if it does not result in a fall, if the bottle 31 slips and attaches itself to a telephone pole in a hurry, Although there will be no permanent deformation of the guideline and its upper fixing metal fittings, if the bottle 31 is torn due to the momentary impact, the guideline itself or
It is possible that the upper fixed point has stretched, and in such cases it is possible to check whether the guideline has been re-tensioned. Moreover, this tension I recognition device 28 does not require drilling the display hole 19.
It is also possible to provide a scale or the like at the end where the side wall 11 of the main body 1 and the arm body 2 overlap. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing how a fall prevention device using the present invention is installed on a utility pole, FIG. 2 is an exploded perspective view of the main body of the present invention, FIG. 3 is a plan view of the present invention, and FIG. The figure is a partially cutaway front view of the present invention, FIG. 5 is a bottom view, FIG. 6 is a left side view, and FIG.
The figure is a right side view, and Figure 8 is a diagram of the installation of the present invention on a utility pole.
FIG. 9, FIG. 10, and FIG. 11 are partially enlarged front views showing an embodiment of the tension checking device of the present invention. In the figure, 1 is the main body, 2 is the arm body, 3 is the] illumination spring,
4 is a spring support plate, 5 is an adjustment shaft, 12 is a band removal part,
13.24 is a coupling hole, and 23 is a guideline attachment part. 25 is a coupling shaft, and 28 is a tension checking device. Patent applicant Tokyo Electric Power Co., Ltd. Nasu Electric Iron Works Co., Ltd. Fujii Denko Co., Ltd. -: To Figure 3 Figure 4 Figure 5 Figure 20 Dos Figure 8 Figure 9 Figure 10 Figure 11

Claims (5)

[Claims] (1) Consisting of a main body 1 that is fixed to a telephone pole and an arm body 2 that is rotatably connected to the main body 1, the arm body 2
A retaining fitting for a fall prevention device, characterized in that the arm body 2 is rotated by applying the elasticity of a spring to one end thereof, and tension is applied to a guideline connected to the other end. (2) Hold the side walls 11 of approximate letter shape oppositely, and
A hand handle 12 is provided on one side piece, and a connecting hole 1 is provided on the other side piece.
3 to form the main body 1, a shaft through hole 21 and a spring bearing part 22 are provided at the base end, and a guideline attachment part 23 is provided at the distal end.
is provided, a coupling hole 24 is provided in the center part to form the arm body 2, and the arm body 2 is fitted between the side walls 11 and 11 of the main body,
The coupling holes 13 and 24 are connected to each other, and the two are rotatably coupled via the shaft, and the spring receiver of the arm body 2 has one end of the coil spring 3 in contact with the portion 22, and the spring receiver is attached to the plate 44 at the other end. This patent is characterized in that the coil spring 3 is held by an adjustment 1105 provided between the main body 1 and the spring support plate 4 in a state in which the arranged coil spring 3 and the shaft through hole 21 of the arm body 2 are loosely fitted. A retaining fitting for a fall prevention device according to claim 1. (3) The arm body 2 consists of a main body 1 which is fixed to a telephone pole and an arm IA2 which is rotatably connected to the main body 1.
The arm body 2 is rotated by applying the elasticity of a spring to one end, and tension is applied to the kite line 8 connected to the other end. Adjust the elasticity of the spring with the adjusting shaft 5 by setting a mark C.Tension checking device 284'IiΩC adjusts the tension horn of the guideline 8 by matching the specified mark L, A retaining fitting for a fall prevention device characterized by: (4) The tension confirmation device 28 has a structure in which the display hole 19 drilled in the main body 1 has a mark of 1 xl and a mark of 21 steps per arm corresponds to the scale. 4. The retainer fitting for a fall prevention device according to claim 3, wherein j is adjusted. (5) The tension checking device 28 is installed so that the mark provided on the arm body 2 corresponds to the protrusion or scale provided in the display hole 19 drilled in the main body 1, and at the same time covers the corresponding mark. 32 and the bottle 31 is fitted into the bottle receiving hole 30 of the arm body 2, whereby the tension of the guideline 8 can be kept constant.