JPH058733Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a clamping mechanism for a pole-type metal wheel used when relining, new installation, or expansion of cables such as communication lines and electric wires.

(Conventional technology) Replacement and installation of communication lines such as telephone lines and electric wires,
When expanding the installation, a large number of metal wheels are fixed and suspended at regular intervals from the existing wire above or a newly drawn messenger wire, and a pulling rope is passed through the rollers inside these metal wheels, and after this pulling rope is The cable connected to the end is continued and extended.

In the past, workers had to climb up to telephone poles, etc. and directly carry out the work of suspending the gold wheel from the messenger wires, etc., and inserting and pulling ropes and cables into and out of the metal wheel, etc., by hand. Because the footing is poor and unstable, there is a risk of falling accidents, so it is desirable to avoid working at heights such as on pillars as much as possible. Therefore, in recent years, long poles or hotstacks have been used from the ground to suspend and fix the metal wheel to messenger wires, etc., and to take pulling ropes and cables into and out of the metal wheel.

(Problem to be solved by the invention) However, these metal wheels are of the so-called cantilever type, with a roller for placing the cable on one side of a vertical frame at the bottom, and a clamping part for the messenger wire at the top. This clamping part clamps the messenger wire and suspends and fixes it to the messenger wire, but since the lever of this clamping part is attached to the side of the vertical frame, it is difficult to use this lever. When a worker pulls a pole from the ground,
The metal wheel itself rotates around the messenger wire, the lever does not operate, and the messenger wire cannot be easily held.

(Means for solving the problem) Therefore, this invention provides a clamp lever above the clamping part that operates the clamping part, places the clamping part of the metal wheel on the messenger wire, and pulls the clamp lever downward. The structure is such that the holding part holds the messenger wire without the metal wheel rotating, and the worker can easily and easily hang the metal wheel on the messenger wire using a long hot stake or the like from the ground. The clamping part has been improved to ensure secure clamping.

The specific structure of this idea is to provide a roller for placing the cable between the lower parts of two vertical frames that are spaced apart from each other, and a clamping part for the messenger wire between the vertical frames above the roller. In the metal wheel having an opening in one of the vertical frames, the clamping part includes two hanging members provided on a shaft extending between the vertical frames, and a clamping body facing opposite to the lower part of each hanging member. is fixed, at least one of the hanging members is movable along the shaft, and a rotatable clamp is provided on the shaft between one vertical frame and the movable hanging member, and from one side above the clamp. A clamp lever is provided in a protruding manner, and when the clamp lever is lowered, the clamp rotates about the shaft, and the movable hanging member approaches the other hanging member, and the messenger wire A receiving metal fitting having a lower surface for receiving the holding member is provided close to the upper surface of the holding body.

(Function) To hang this metal wheel on the messenger wire, hook the metal wheel with the hook at the tip of the hot stay, and then the worker extends this hot stay from the ground and connects it to the messenger wire strung between the telephone poles. Hold the metal wheel by your side, insert the messenger wire into the metal wheel through the opening of the metal wheel, hang the clamping part over the messenger wire, and pull down the clamp lever using the hook at the tip of the hot stay. At this time, the receiving metal of the clamping part is placed on the messenger wire, and the clamp lever is located above these, so even if the clamp lever is pulled down, the receiving metal of the metal wheel presses down the messenger wire from above. The gold wheel does not rotate just because it works. When the clamp lever is pulled down, the clamp rotates around the shaft, and the movable hanging member approaches the other hanging member, so that the two opposing clamping bodies clamp the messenger wire. . In this way, the gold wheel is fixed on the messenger wire,
These metal wheels are hung on a wire at regular intervals. Then, a pulling rope is placed on a roller in each metal wheel from one end of a large number of metal wheels, the pulling rope is pulled from one end, and a cable connected to the rear end of the pulling rope is placed on the roller of each metal wheel. At this time, the rollers of each metal wheel rotate as the cable passes, so as not to damage the cable. In addition, the wires mentioned above may be pre-strung at the time of extension, or existing wires may be used.
The clamping part of the metal wheel of this invention can clamp various existing wires such as small to large diameter messenger wires and SS cables with a roughly gourd-shaped cross section.

(Example) An embodiment of this invention will be described below with reference to the drawings.

1, 1 are two vertical frames installed with an interval between them, one of which is long and the other short,
Each frame has a channel groove shape with an outwardly opened cross section. 2 is a substantially U-shaped lower frame formed by overlapping one side plate of the long vertical frame 1, and 3 is formed between the lower end of the short frame 1 and the upper end of the other side plate of the lower frame 2. 4 is a roller shaft that extends between both sides of the lower frame 2, and one end of this roller shaft 4 passes through the long vertical frame 1, and Vertical frame 1
A nut 5 is screwed onto one end of a roller shaft 4 that protrudes to the outside, and a nut 6 is screwed to the other end of the roller shaft 4 that passes through the other side plate of the lower frame 2 and protrudes from the other side plate. The roller shaft 4 protrudes in the direction. 7 is a roller rotatably provided on the shaft 4 in the lower frame 2; 8 is a circular hole bored in the bearing plates 2a, 2a protruding outward from both side edges of the other side plate of the lower frame 2; 9 is a circular hole in the shaft 4; A semicircular shaft having a semicircular cross section approximately half of the circular hole 8, which is rotatably provided between the two bearing plates 2a, 2a by penetrating both ends of the two circular holes 8. One end of the opening/closing door 3 is fixed to the shaft 9. Reference numeral 10 denotes a locking shaft provided at the lower end of the short vertical frame 1, and a hook portion 3a provided at the free end of the opening/closing door 3 is removably locked to this locking shaft 10. 11
are the two bearing plates 2a of the lower frame 2,
A latch 12 is a long hole provided in the back plate of the latch 11, and one end of the shaft 4 is loosely inserted into the elongated hole 12. A nut 13 is screwed onto the 4 ends of the shaft protruding from the outer surface of the back plate. 14 is a spring spring with one end fixed to the lower end of this latch 11 and the other end fixed to the shaft 4. The latch 11 is lifted upward by the force of this spring spring 14, and the upper part becomes the pivot end of the opening/closing door 3. The semicircular shaft 9, which is inserted between the opening and closing door 3 and the semicircular shaft 9 and is integral with the opening/closing door 3, cannot rotate, and the opening/closing door 3 is locked. At this time, the shaft 4 is located at the lower end of the elongated hole 12 of the latch 11. 15 is latch 11
Hooks 16 and 17 project from the lower end of the back plate of the frame, and 16 and 17 are an upper shaft and a lower shaft that extend horizontally between the upper portions of the vertical frames 1 and 1, respectively, with an interval between the vertical frames 1 and 1.
Reference numeral 18 denotes a receiving metal fitting having a channel-shaped cross section provided at the center of these upper shaft 16 and lower shaft 17, and this receiving metal fitting 18 allows each of the shafts 16 and 17 to pass through holes in both side plates. Reference numerals 19 and 19 denote hanging members having a channel groove type cross section provided on the shafts 16 and 17 between this receiving metal fitting 18 and each vertical frame 1. The upper shaft 16 and the lower shaft 17 are loosely passed through the two holes, so that the shaft 1
It is slidable along lines 6 and 17. 20,2
0 is a clamping body made of rubber or the like provided at the lower end of each of these hanging members 19, and each of these clamping bodies 20
protrude from each hanging member 19 on both sides to face each other. Reference numerals 21 and 21 denote guide fittings that cover the lower surface of each clamping body 20 and are supported by each hanging member 19.These two guide fittings 21 and 21 are both arranged in a substantially "C" shape, and each Guide leg pieces 21a extending to the outside of the vertical frame 1 are protrudingly provided on both sides of the lower end of the guide fitting 21. Reference numerals 22 and 22 denote collars 23 and 2 that are crowned on the upper shaft 16 between each side plate of the receiving metal fitting 18 and each hanging member 19;
Reference numeral 3 denotes a spring spring wound around the outer periphery of the lower shaft 17 between each side plate of the receiving fitting 18 and each hanging member 19. These spring springs 23 always keep each hanging member 19 in the direction of the vertical frame 1. Being pushed. Reference numerals 24 and 24 denote disk-shaped clamps rotatably provided on the lower shaft 17 between each hanging member 19 and each vertical frame 1. It has an arcuate groove 25 into which the upper shaft 16 loosely passes. 2
6 and 26 are protrusions provided at two locations on the inner surface periphery below both ends of the arcuate groove 25 of each clamp 24;
Reference numeral 7 denotes a clamp lever 28 that protrudes from the peripheral edge of the arcuate groove 25 of each clamp 24 at a substantially central position;
is a handle attached to the tips of these two clamp levers 27, 27.

In this embodiment, when the operator holds this metal wheel and pulls the hook 15 downward against the force of the spring spring 14, the latch 11 comes off from the door 3 and the semicircular shaft 9, and the door 3 The opening/closing door 3 can be opened by rotating it around the semicircular shaft 9. In that case, if the door 3 of the metal wheel is turned down and tilted slightly diagonally, the door 3 will open under its own weight when the latch 11 is released.
When the opening/closing door 3 is open, the semicircular portion of the semicircular shaft 9 touches the end of the latch 11, and the latch 11 does not move even under the force of the spring spring 14.

Then, using a hot stake (not shown), the handle 28 of the metal wheel is hung from the hook at the end of the hot stay, and the metal wheel is pulled up to the messenger wire (not shown). Then, the messenger wire is inserted into the metal wheel through the opening, the messenger wire is applied to the lower surface of the receiving metal fitting 18 between the two clamping bodies 20, 20, and the metal wheel is placed on the messenger wire. When the handle 28 is pulled down using the hook of the hot stay, each clamp lever 27 rotates around the lower shaft 17 as shown in FIG. 26 is inserted between each vertical frame 1 and each hanging member 19 as shown in FIGS. Although the upper part of each hanging member 19 is not pushed because the clamp 24 is flat, and the collar 22 is interposed between it and the receiving metal fitting 18, the upper part of each hanging member 19 hardly moves. Therefore, the lower part of each hanging member 19 is inclined obliquely close to the center, and the respective clamping bodies 20 are close to each other, and the messenger wire 29 is in contact with the lower surface of the receiving fitting 18.
Hold it so that it is pushed up from both sides slightly below.
At this time, the rotation of the clamp 24 is restricted by the length of the arcuate groove 25, and the clamp lever 27 stops at the position shown in FIG. 5 and cannot rotate any further. Hanging member 19
It is in between. Furthermore, since each clamp 24 has protrusions 26 on both sides, the clamp lever 27 may be tilted to either side as shown by the dashed line in FIG. As a result, this metal wheel is fixed on the messenger wire 29 and suspended.

In this way, a large number of metal wheels are hung and fixed in order at intervals along the length of the messenger wire (not shown), and a pull rope (not shown) is connected from one end of each of the metal wheels. Put it in each gold wheel and place it on each roller 7. Then, the worker lifts the opening/closing door 3 of each of these metal wheels with the tip of a lever holding a hot stake from the ground, and when the hook part 3a of the opening/closing door 3 approaches the locking shaft 10 of the vertical frame 1, the opening/closing door is closed. 3, the semicircular shaft 9 also rotates and the oblique plane of the semicircular shaft 9 becomes approximately parallel to the other side plate of the lower frame 2. When the end of the latch 11 comes off from the semicircular shaft 9, the force of the spring spring 14 is applied. , the latch 11 slides upward, and this force rotates the door 3 , the hook 3 a engages with the locking shaft 10 , and the latch 11 is placed between the door 3 and the semicircular shaft 9 . When the user enters, the door 3 is locked in the closed state. In this state, the pull rope is pulled from one end, and the cable (not shown) connected to the rear end of the pull rope is passed through each metal wheel and extended.

At this time, even if this metal wheel swings on the messenger wire and the pulling rope etc. floats from the roller 7 inside the metal wheel, the guide legs 21a of each guide fitting 21 extend to the vertical frame 1, so the guide Metal fittings 2
A pull rope or the like will not get caught between 1 and the vertical frame 1.

After the cable has been extended, the cable is removed from each gold wheel, but in order to open the opening/closing door 3,
When a worker from the ground pulls down the hook 15 using a hot stake, the hook 15 is on the side of the metal wheel as shown in FIG. The hook 15 is tilted to a position directly below, the latch 11 is removed from the door 3, and the door 3 rotates together with the semicircular shaft 9 due to its own weight and opens.
Then take out the cable from this opening.

To remove this metal wheel from the messenger wire 29, use the hook at the end of the hot stay to pull up the handle 28. Each clamp 24 rotates, and each protrusion 26 connects each vertical frame 1 and each hanging member 19. The two clamping bodies 20, 2
0 is separated by the force of the spring spring 23, and the grip is released. Then, the metal wheel can be lifted from the messenger wire using a hot stay, and the messenger wire can be removed from the opening.

FIGS. 8 and 9 show another embodiment of this invention, in which the collar 22 of the above embodiment is removed. In this case, when the clamp lever 27 is pulled down, each hanging member 19 is pushed by the protrusion 26 of each clamp 24 and moves over the upper shaft 16 and lower shaft 17 against the force of the spring spring 23, as shown in FIG. The messenger wire 29, which is pressed against the lower surface of the receiving metal fitting 18, is held by the holding bodies 20, 20 on both sides.

Further, FIGS. 10 and 11 show still another embodiment of this invention, in which, in place of the above-mentioned receiving metal fitting 18,
Angle-shaped receiving metal fittings 30 are attached to each hanging member 19.
These are provided horizontally protruding from the wire and receive the messenger wires, and each hanging member 1
The spring springs 31 separating the springs 9 from each other are attached to the lower shaft 17 between the hanging members 19, 19 on both sides.
Wrap it around the hole 32 in one vertical frame 1.
from the outer surface of this hole 32.
A stopper pin 34 is provided which is always urged inward of this hole 32 by a force of 3. In this case, when the clamp lever 27 is pulled down, each hanging member 19 is pushed by the protrusion 26 of each clamp 24 and moves on the lower shaft 17 as shown in FIG.
The messenger wire 29, which slides against the force of the spring spring 31 and is pressed against the lower surface of each receiving fitting 30, is held by the holding bodies 20 on both sides, and in this state, the clamp 24 is inserted inside the hole 32. Since the protrusion 26 is located, the stopper pin 34 is inserted by the spring spring 33 into the recess 26a corresponding to the protrusion 26, and the clamp 24 is fixed. To release the clamping of the messenger wire 29, simply pull up the clamp lever 27 strongly, and the recess 26a will become a curved wall.
As the clamp 24 rotates, the stopper pin 34
is removed from the recess 26a, and the state shown in FIG. 10 can be returned.

Further, in the above embodiment, each of the hanging members 19 is slidable along the lower shaft 17, but the present invention is not limited to this, and only one of the hanging members 19 may be movable. Further, the clamp is not limited to the above-mentioned embodiment, and may have an appropriate structure, such as one that is screwed onto the lower shaft 17 and moves inward on the lower shaft 17 as it rotates.

(Effect of the invention) This invention has the above-mentioned configuration, and the metal wheel having this clamping mechanism is hooked to the tip of a hot stake or rod, and suspended from the ground to a messenger wire, etc. above, and the metal wheel's clamp lever is Just by pulling it down from the ground using the hook at the end of a hot stay, etc., the metal wheel can be fixed on the messenger wire by clamping it.

At this time, the clamp lever is located above the messenger wire and is pulled down in the longitudinal direction of the messenger wire, so a load is applied in the direction of pressing the clamping part located at the top of the metal wheel against the messenger wire from above. The gold wheel does not rotate around the messenger wire, and can be operated quickly and reliably from the ground using a long hot stake or rod.

Therefore, by using the wire wheel having the clamping mechanism of this invention to extend cables, etc., the work can be carried out safely and quickly from the ground using long hotstacks and rods.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, in which Fig. 1 is a partially sectional front view with a clamping mechanism of this invention, Fig. 2 is a side view of the same, Fig. 3 is a sectional view taken along the line A-A in Fig. Fig. 4 is a sectional view taken along the line B-B in Fig. 1, Fig. 5 is an explanatory diagram showing the state of the clamp when the messenger wire is held between the holding parts of this invention, and Fig. 6 is a sectional view of this invention. Fig. 7 is a sectional view of the clamping part showing a state in which the messenger wire is clamped by the clamping part, and Figure 7 shows the opening/closing door opened with the metal wheel having the clamping mechanism of this invention fixed to the messenger wire and suspended. FIG. 8 is a sectional view of the clamping part showing another embodiment of this invention; FIG. 9 is a sectional view of the clamping part showing a state in which the messenger wire of the same embodiment is clamped; FIG. 10 is a cross-sectional view of a clamping part showing still another embodiment of the invention, and FIG. 11 is a cross-sectional view of the clamping part showing a state in which a messenger wire of the same embodiment is clamped. In the figure, 1 is the vertical frame, 2 is the lower frame,
3 is an opening/closing door, 4 is a roller shaft, 7 is a roller,
17 is a lower shaft, 18 is a receiving metal fitting, 23 is a spring spring, 24 is a clamp, 25 is an arcuate groove,
26 is a protrusion, 27 is a clamp lever, and 29 is a messenger wire.

Claims (1)

[Scope of utility model registration request] A cable mounting roller is provided between the lower portions of two vertical frames that are spaced apart from each other, a clamping portion for the messenger wire is provided between the vertical frames above the roller, and an opening is provided in one of the vertical frames. In the metal wheel having the above-mentioned clamping part, two hanging members are provided on the shaft passed between the vertical frames, and opposing clamping bodies are fixed to the lower part of each of these hanging members, and the clamping part is fixed to the lower part of each hanging member. At least one of the vertical frames is movable along the shaft, a rotatable clamp is provided on the shaft between one vertical frame and the movable hanging member, and a clamp lever is protruded from one side above the clamp. When the lever is lowered, the clamp rotates around the shaft, and the movable hanging member approaches the other hanging member, and the receiving metal fitting for the messenger wire is connected to the upper surface of the clamping member. A gripping mechanism for a pole-type metal wheel, which is characterized by being provided in close proximity to the handle.