JPH09163531A - Pole-top safety belt attaching tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pole-top safety belt attaching tool which is not opened even if something wrong happens to a tightening means such as a bolt, a butterfly nut, etc., and by which a pole-top safety belt can be attached easily. SOLUTION: A pole-top safety belt is attached to a cable 49 having a messenger wire 40 by a pole-top safety belt attaching tool. In the pole-top safety belt attaching tool, the upper parts of a pair of attaching members 2 and 3 whose top parts are linked with each other with a hinge are formed into round surrounding parts 7 and 7 which surround the cable 39 and the lower parts of the pair of the attaching members 2 and 3 are extended downward vertically to form folded plates 10 and 11. Wire holding parts 8 and 9 which hold the messenger wire 4 by opening and closing the attaching members 2 and 3 are formed in the upper part of the inner circumference of the surrounding parts 7 and 7 and retaining holes 12 and 13 with which the retaining metal fitting of a safety belt is retained are formed in the respective folded plates 10 and 11. Above the retaining holes 12 and 13, a fixing screw is made to protrude from the upper part of one 11 of the folded plates 10 and 11 toward the other folded plate 10 in which a through-hole 16 through which the the fixing screw is inserted when the attaching members 2 and 3 are closed is formed and the fixing screw is mated with a nut member 6 by which the folded plates 2 and 3 are tightened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pole safety belt fitting for a pole safety belt.

[0002]

2. Description of the Related Art In the field of communications, when carrying out work such as cable retention, cable connection, and cable branching on a pillar,
In order to make the work safe and smooth, a pole safety belt (lifeline) 30 and a pole workbench 31 as shown in FIG. 4 are used.

The pole safety belt 30 mainly comprises a belt 32, a main rope 33, and an auxiliary rope 34. Belt 30
Is for connecting the main rope 33 and the auxiliary rope 34 to the body of the operator by winding them around the waist of the operator.
A main rope connecting fitting (D ring) 35 and an auxiliary rope connecting fitting 36 for connecting to the above are provided. Book rope 33
Is for supporting the operator's body so as not to fall backward, and is slidably passed through an annular main rope connecting fitting 35. The rope 33 has a stopper 37 provided at one end thereof and a messenger wire 4 provided on an upper portion of a cable 39 via a post safety belt attachment 38.
It is connected to 0, and the other end side is wound around the utility pole 41 and fixed. The auxiliary rope 34 is for supporting the body of the worker when the main rope 33 comes off or breaks,
One end is attached to the auxiliary rope connecting fitting 36 of the belt, and the hook fitting 42 provided at the other end is connected to the messenger wire 40.

FIG. 5 shows a pole safety belt mount 38. This pole safety belt mount 38 has a lower
A pair of mounting members 45, 46 connected by 2 and a bolt 4 for connecting and tightening the upper portions of these mounting members 45, 46.
7 and a wing nut 48, and an annular metal fitting 49 for locking the metal fitting 37 of the rope 33. A wire holding portion 50 for holding the messenger wire 40 is formed on the upper portions of the respective mounting members 45 and 46.
By tightening the upper parts of the mounting members 45, 46 with the bolt 47 and the wing nut 48 so as to overlap each other, the messenger wire 40 is sandwiched and tightened, so that the pole safety belt mount 38 is fixed to the messenger wire 40. There is.

The bolt 47 is provided on one mounting member 45 so as to be rotatable in the vertical direction in order to facilitate the attachment and detachment of the pole safety belt mounting member 38. The other mounting member 46
A notch 51 for allowing the bolt 47 to rotate upward while allowing the bolt 47 to penetrate is formed in the wing nut 48.
Even if it is not completely removed, the bolt 47 can be rotated upward to open the post safety belt attachment 38. The ring-shaped metal fitting 49 is provided at the lower ends of the mounting members 45 and 46, and the ring-shaped metal fitting 49 is attached to the pillar safety belt 3.
One end of the rope 33 can be connected to an arbitrary position of the messenger wire 40 by hooking the stopper metal fitting 37 of 0.

[0006]

However, since the bolt 47 and the wing nut 48 are the only means for restricting the opening and closing of the mounting members 45, 46, if the bolt 47 should break, the pole safety belt mounting member 38 will not work. The hinge 52 is opened about the center, and the bolt 47 is provided on one of the mounting members 45 so as to be vertically rotatable, and the notch 51 for allowing the rotation of the bolt 47 is formed on the other mounting member 46. Therefore, if the wing nut 48 is loosened and the bolt 47 is rotated upward, the pillar safety belt mount 38 opens around the hinge 52.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems and to provide a pole safety belt mount which is easy to mount and does not open even if the fastening means such as a bolt and a wing nut should become abnormal. It is in.

[0008]

In order to achieve the above object, the invention as set forth in claim 1 is a pole safety belt attachment for attaching a pole safety belt to a cable having a messenger wire. On the upper part of the pair of attachment members that are connected together, a surrounding portion that surrounds the cable is formed, and a vertically extending integrally laminated plate portion is formed below the surrounding portion.
Formed on the inner circumference of the upper part of the surrounding part is a wire holding part for sandwiching the messenger wire by opening and closing the mounting member, and forming an engaging hole for hooking a safety band stopper on each of the mating plate parts. , A through hole for inserting a fixing screw into one of the mating plate portions above the engaging hole toward the other mating plate portion and inserting the fixing screw into the other mating plate portion when the mounting member is opened and closed. And a nut member for tightening the mating plate portions of the closed mounting member is screwed into the fixing screw.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the pole safety belt mount 1 comprises a pair of mounting members 2, 3, a hinge 4, a fixing screw 5 as a fastening means, and a nut member 6. Become.

The mounting members 2 and 3 are substrates fixed to the messenger wire 40. The first mounting member 2 is located on the right side (front side) and the second mounting member is located on the left side (rear side) in FIG. 3 and 3. The upper ends of the first mounting member 2 and the second mounting member 3 are rotatably connected by a hinge 4,
The lower ends of the mounting member 2 and the second mounting member 3 are adapted to open in the front-rear direction.

Surrounding the first mounting member 2 and the second mounting member 3 is a surrounding portion 7, 7 which encloses the cable 39 in a substantially cylindrical shape with the mounting members 2 and 3 superposed on each other. There is. The surrounding portions 7 and 7 are formed by bending the upper part of the first mounting member 2 in a semi-cylindrical shape so as to project forward and the upper part of the second mounting member 3 in a semi-cylindrical shape so as to project rearward. The inner diameter of the cable 39 is larger than the outer diameter of the cable 39 so as not to contact the cable 39.

On the inner circumference of the upper part of each of the surrounding parts 7, 7,
Wire holding portions 8 and 9 for holding the messenger wire 40 are formed. The wire holding parts 8 and 9 are
A first wire gripping portion 8 protruding rearward from an upper inner peripheral surface of the first mounting member 2 and a second wire gripping protruding frontward from an upper inner peripheral surface of the second mounting member 3. The first wire holding portion 8 and the second wire holding portion 9 have the projecting ends 8a, 9a opposed to each other by the opening and closing of the first mounting member 2 and the second mounting member 3 so as to face each other, and to be separated from each other. The wire 40 is sandwiched.

Formed on the lower portions of the first and second mounting members 2 and 3 are mating plate portions 10 and 11 integrally and vertically extending downward from the lower ends of the surrounding portions 7 and 7, respectively. The laminated plate portions 10 and 11 are formed so as to be in close contact with each other when the first mounting member 2 and the second mounting member 3 are closed. Engagement hole 1 for hooking the stopper 37 of the safety belt 30
2 and 13 are formed. These engagement holes 12, 13
Is a horizontally elongated slot having the same size, which is formed at a position where the first mounting member 2 and the second mounting member 3 are superposed when the first mounting member 2 and the second mounting member 3 are closed, and is penetrated in the front-rear direction.

The hinge 4 is one side portion 1 of the annular handle 14.
5, the one side portion 15 of the handle 14 is formed to have a length substantially equal to the length of the elbow 4 so that the handle 14 does not move in the left-right direction.

As shown in FIGS. 2 and 3, the fixing screw 5 is provided at a position above the engaging hole 13 of the second laminated plate portion 11 formed on the second mounting member 3 and the other first laminated plate. It is fixedly projected toward the portion 10. Also, the first laminated plate portion 10
An insertion hole 16 for inserting the fixing screw 5 when the first attaching member 2 and the second attaching member 3 are closed and projecting the protruding end of the fixing screw 5 forward is formed in the. The insertion hole 16 is a vertically long hole, and is formed by the first mounting member 2 and the second mounting member 2.
The fixing screw 5 does not hit the first mating plate portion 10 when the mounting member 3 is opened and closed.

The nut member 6 is the mating plate portion 1 in the closed state.
It is for tightening 0 and 11 together, and is adapted to be screwed into the fixing screw 5. The nut member 6 has a substantially cylindrical shape, and a taper portion 18 having a diameter that decreases toward the rear is formed on the outer periphery of the rear end side of the first mating plate portion 10 that is seated on the front surface 17 of the fixing plate 5. The shaft center of the nut member 6 is easy to understand when the nut member 6 is screwed onto the shaft. An introducing portion 19 is formed on the inner periphery of the rear end side of the nut member 6 so as to expand rearward, and the introducing portion 19 moves along the fixing screw 5 when the nut member 6 is screwed into the fixing screw 5. Then, the axis of the nut member 6 is aligned with the axis of the fixing screw 5.

Further, the bolt 2 is provided on the front end side of the nut member 6.
0 is screwed backwards and the head 2 of the bolt 20
1 and the nut member 6 are provided with a washer 22 and a washer 2 with a pawl.
3 is sandwiched. The washer 23 with pawls is sandwiched so that it can rotate appropriately, and an engagement ring 24 for connecting chains is formed on the outer periphery of the washer 23 with pawls.
One end of a chain 25, which is a rope, is connected to the engagement ring 24, and the other end of the chain 25 is connected to the handle 14. The chain 25 is for connecting the nut member 6 to the handle 14 so as not to accidentally drop the nut member 6 on the ground when the nut member 6 is attached or detached.
It has a length that does not hinder the attachment / detachment to / from the fixing screw 5.

Next, the operation will be described.

When attaching the pole safety belt mount 1 to the messenger wire 40, as shown in FIG. 3, the nut member 6 is removed from the fixing screw 5, and the lower ends of the first mounting member 2 and the second mounting member 3 are respectively attached. Open in the front-back direction. At this time,
Since the nut member 6 is connected to the handle 14 by the chain 25, even if the nut member 6 is released,
It hangs at the bottom of No. 5 and never falls to the ground.

Next, the pole safety belt fitting 1 is brought close to the messenger wire 40 so that the messenger wire 40 enters the surrounding portions 7, 7, and the first mounting member 2 and the second mounting member 3 are closed. At this time, the wire holding portions 8 and 9 are also closed at the same time, and the messenger wire 40 is held between the projecting ends 8a and 8b of the wire holding portions 8 and 9. Fixing screw 5
Is inserted into the insertion hole 16 formed in the first mating plate portion 10 and is projected in front of the first mating plate portion 10. Further, the engagement holes 12 and 13 are overlapped with each other, and the first and second laminated plate portions 10 and 11 are in a state of being penetrated in the front-rear direction.

Then, the nut member 6 is screwed and attached to the fixing screw 5, and is seated on the front surface 17 of the first laminated plate portion 10 and tightened. At this time, since the tapered portion 18 that reduces in diameter rearward is formed on the outer periphery of the rear end side of the nut member 6, the axial center of the nut member 6 is easily grasped, and the axial center of the nut member 6 is , Is quickly aligned with the axis of the fixing screw 5. Moreover, even if the shaft center of the nut member 6 is the fixing screw 5,
Even if it is deviated from the axial center of the above, since the introduction portion 19 that expands in diameter toward the rear is formed on the inner periphery on the rear end side of the nut member 6, the introduction portion 19 moves along the fixing screw 5. , Align the axis of the nut member 6 with the axis of the fixing screw 5,
It is quickly screwed into the fixing screw 5.

By doing so, the messenger wire 40 is fastened to the wire holding portions 8 and 9, and the pole safety belt mount 1 is fixed to the messenger wire 40. It suffices to pierce and stop the metal fittings 37 of the pillar safety belt 30.

In this state, in the unlikely event that the fixing screw 5 breaks, the force for closing the first mounting member 2 and the second mounting member 3 disappears and they start to rotate in the respective opening directions.
However, since the stopper fitting 37 of the pole safety belt 30 penetrates through the engagement holes 12 and 13 and is hooked, the pillar safety belt attachment 1 is not completely opened, and the pole safety belt mounting tool 1 is not messenger wire 40.
It does not come off. If the nut member 6 loosens and the nut member 6 does not tighten the first mating plate portion 10, the nut member 6 loosens and the first mounting member 2 and the second mounting member are moved by the length moved forward. The member 3 opens, but the first mounting member 2 and the second mounting member 3 do not open further, and the metal fittings for the pillar safety belt 30 are pierced through the engaging holes 12 and 13 and are hooked. It does not open beyond the size of 37.

When removing the pole safety belt mount 1 from the messenger wire 40, the procedure is the reverse of the mounting. That is, first, after removing the stopper fitting 37 of the pole safety band 30 from the engagement holes 12 and 13, the nut member 6 is rotated to be removed from the fixing screw 5, so that the first mounting member 2 and the second mounting member 3 are separated from each other. Just open it.

In this way, the respective mating plate portions 10, 1 are
Since the engaging holes 12 and 13 for hooking the stoppers 37 of the pole safety belt 30 are formed on the stopper 1, even if the fixing screw 5 is broken or the nut member 6 is loosened, the stoppers 37
Can prevent the mating plate portions 10 and 11 from being opened, and can prevent the pole safety belt fitting 1 from completely coming off the messenger wire 40.

Since the fixing screw 5 is fixedly provided on the second mating plate portion 11 and the first mating plate portion 10 is formed with the vertically long insertion hole 16 for projecting the fixing screw 5 forward, even if the nut member 6 is Even if it is loosened, it is possible to prevent the mating plate portions 10 and 11 from opening more than the length that the nut member 6 has loosened and moved forward.

Since the nut member 6 is connected to the handle 14 by the chain 25, it is possible to prevent the nut member 6 from dropping to the ground even if the hand is accidentally released from the nut member 6.

Since the tapered portion 18 is formed on the outer periphery of the rear end side of the nut member 6 so as to reduce its diameter toward the rear, the axis of the nut member 6 can be easily grasped and the axis of the nut member 6 can be easily adjusted. It can be adjusted to the axis of the fixing screw 5.

Since the introduction portion 19 is formed on the inner periphery of the rear end side of the nut member 6 so as to expand rearward, even if the axis of the nut member 6 deviates from the axis of the fixing screw 5, the nut is easily The member 6 can be screwed onto the fixing screw 5.

The nut member 6 may be connected to a member other than the handle 14, for example, a position that does not interfere with the work of the mounting members 2 and 3. Chain 25
It may be a rope other than a chain, for example, a wire.

[0032]

In summary, according to the present invention, the following excellent effects can be obtained.

(1) Even if the fixing screw is broken, it is possible to prevent the pole safety belt fitting from being completely opened.

(2) Even if the nut member is loosened, it is possible to prevent the post safety belt fitting from being completely opened.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pole safety belt mount showing a preferred embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view showing a state in which the pole safety belt mount of FIG. 2 is opened.

FIG. 4 is a perspective view showing a mounting example of a conventional pole safety belt.

5 is a perspective view showing the pole safety belt mount of FIG. 4. FIG.

[Explanation of symbols]

 2 1st mounting member (mounting member) 3 2nd mounting member (mounting member) 4 Hex 5 Fixing screw 6 Nut member 7 Surrounding part 8 1st wire holding part (wire holding part) 9 2nd wire holding part (wire holding) 10) First laminated plate portion (laminated plate portion) 11 Second laminated plate portion (laminated plate portion) 12 Engagement hole 13 Engaging hole 16 Insertion hole 39 Cable 40 Messenger wire

Claims (1)

[Claims] 1. A pole safety belt mount for mounting a pole safety belt to a cable having a messenger wire, wherein an upper portion of a pair of mounting members whose upper portions are connected to each other is formed with a surrounding portion surrounding the cable. And a vertically extending laminated plate portion integrally formed therewith, and at the inner circumference of the upper portion of the surrounding portion, wire holding portions for respectively holding the messenger wires by opening and closing the mounting member are formed, and the respective laminated plates. An engaging hole for hooking a safety belt stopper is formed in the part, and a fixing screw is provided on one of the mating plate parts above the engaging hole toward the other mating plate part and the other one is formed. A pillar having a through hole for inserting a fixing screw when the mounting member is opened and closed is formed in the mating plate portion, and a nut member for tightening the mating plate members of the closed mounting member is screwed into the fixing screw. Safety belt Fixture.