JPH0534166Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a new line crossing tool, and more particularly to a line crossing tool that allows a new line to cross over an existing line.

[Conventional technology] Newly installed lines are laid over existing lines that are spanned (wired) from utility poles to buildings, etc., or over existing lines that are spanned between utility poles. In such cases, the conventional method is to connect the rear end of the pilot wire to the tip of the new line, throw it upward from the direction where it intersects with the existing line, cross over the existing line, and then connect the pilot wire to the tip of the new line. A bridge construction method has been adopted in which the newly constructed line is lowered.

[Problem that the invention aims to solve] However, when using a pilot wire to throw over an existing line, there were many failures, and there was a problem in that the wire had to be thrown again and again.

[Means for Solving the Problems] The present invention provides an operating rod having a predetermined length to be paid out from the ground onto an existing line, a support frame provided on the operating rod to extend the rod, and the supporting rod. A rotating body that is rotatably supported by a frame around a horizontal axis and has an existing line engagement groove on its outer periphery that engages at least the outer periphery of the existing line; The new line is formed in an arc shape to be engaged with the operating rod, covers at least one existing line engagement groove formed on the outer periphery of the rotating body, and the newly installed line is locked to the upper part of the groove, and supports the operating rod in a substantially vertical direction. In some cases, a cover that moves along the outer periphery of the rotor due to its own weight and whose lower end touches the side of the operating rod, and a cover that moves along the outer circumference of the rotating body due to its own weight, and a lower end of the cover that moves by pulling the operating rod downwards A guide member for guiding the existing line into the existing line engagement groove of the rotating body from between the operating rod and the support frame, and a predetermined guide member on the outer periphery of the rotating body opposite to the cover. a new wire guide member supported at a distance from the upper part of the cover to which the new wire is locked at a guide interval, and a distance from the opening width of the engagement groove; By engaging the operating rod with the guide member and pulling the operating rod downward, the guide member engages the existing line in the existing line engagement groove, and by further pulling the operating rod downward from that position, the operating rod can be rotated. It is configured so that the existing wires can be crossed by rotating the board and allowing the existing wires to escape from the existing wire engagement grooves.

[Operation] First, the feeding end side of the newly installed wire is supported by the newly installed wire guide member of the support frame, and the feeding end is latched to the cover body beyond the existing wire engagement groove. next,
By feeding out the operating rod to the existing line, engaging the guide member with the existing line, and pulling the operating rod downward, the existing line is engaged in the existing line engagement groove, and further from that position. By pulling the operating rod downward, the rotating body is rotated and the existing line comes out of the existing line engagement groove. Furthermore, since the existing line is spanned over buildings, etc., it may be possible to swing it up, down, left and right during line crossing work, but it cannot be moved by a rotating body unless it is cut.

[Embodiment] A preferred embodiment of this invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the line changing tool mainly has existing line engaging grooves 2 formed at intervals in the circumferential direction on its outer periphery for inserting and removing the existing line 1. A set of two rotary disks 3, and a distance member 11 interposed between the rotary disks 3, 3 so as to maintain a constant distance between these rotary disks 3, 3.
and a set of two support frames 4, 4 disposed outside the rotary discs 3, 3 so as to sandwich the rotary discs 3, 3 in order to rotatably support the rotary discs 3, 3.
and a support plate (newly installed guide member) 18 provided on the support frames 4, 4 at a position above the rotary discs 3, 3 and spanning in the tangential direction of the rotary discs 3, 3,
A cover 5 is engaged with the outer periphery of the rotary disks 3, 3 so as to be able to reciprocate along the circumferential direction, and the rotary disks 3, 3, support frames 4, 4, etc. are moved toward the existing line 1 side. An operating rod 6 is attached to the lower part of the support frames 4, 4 so as to fit the tip of the operating rod 6, and to fix the tip of the operating rod 6 after fitting. It is configured by a tubular attachment portion 7 formed in the.

In the embodiment, the rotary disks 3, 3 have spokes 9 integrally attached to the outer peripheries of hubs 8, 8 constituting the center of rotation, respectively, at intervals in the circumferential direction, and spokes 9 that are adjacent to each other in the circumferential direction. 9, 9 are connected in the circumferential direction by a flange portion 10, and the above-mentioned existing wire engagement groove 2 is formed in the upper part of each of these flange portions 10. A protrusion (engaging portion) 13 is integrally formed at the tip of the spoke 9 of each rotary disk 3, 3, as shown in FIG.
These protrusions 13 are formed in a cylindrical shape, and when the rotary disks 3, 3 are faced to each other, the protrusions 13, 1
The end surfaces of 3 are formed so as to face each other,
The length of the distance member 11 is determined so that a predetermined distance 12 is formed between the end faces of the projections 13 when the distance member 11 is inserted (see FIG. 2). On the other hand, as shown in FIG. 1, rail grooves 14 are formed on both sides of the cover 5 along the circumferential direction of the cover 5, and one of the rail grooves 14 has one rotational direction. The protrusions 13 of the spokes 9 of the disk 3 are slidably engaged, and the protrusions 13 of the spokes 9 of the other rotary disk 3 are slidably engaged with the other rail groove 14. Therefore, the distance 12 is appropriately larger than the plate thickness (thickness) between the rail grooves 14, 14 of the cover 5, and the spokes 9, 9 of the rotary disks 3, 3 are placed in the rail grooves 14, 14. When engaged so as to sandwich them from both sides, the cover 5 will fit the protrusions 13 of the spokes 9, 9,
13 as a guide, it becomes possible to reciprocate along the circumferential direction of the rotary disks 3, 3. Each part of the line crossing tool is made of resin material (PP, FRP) to reduce weight.

Next, the rotary disks 3, 3 relative to the support frames 4, 4
mounting position, support frame 4, 4 and rotary plate 3,
The attachment of the cover 5 to the cover 3 will be described in detail.

In FIG. 1, the hubs 8, 8 are rotatably supported by the support frames 4, 4 with their centers of rotation located near the left side of the support frames 4, 4. Approximately the right half thereof is covered and the remaining portion protrudes from the support frames 4, 4. Then, the rail grooves 14, 14 of the cover 5 are respectively engaged with and spanned over the projections 13, 13 of the three spokes 9, 9 protruding from the left side of the support frames 4, 4. There is. In other words, the cover 5 has a total of three protrusions 1 of the spokes 9 protruding from the support frames 4, 4.
3 and 13 so as to be reciprocally movable along the circumferential direction of the rotary disks 4 and 4, and when moved clockwise relative to the rotary disks 4 and 4, and at the upper end thereof. When the support frame 5a abuts against the upper end of the left end 4a of the support frames 4, 4, it protrudes from the support frames 4, 4 and the support frame 4,
Of the total of four existing line engaging grooves 2 exposed to the outside of the support frames 4, only the existing line engaging groove 2 located at the lowest position near the left end 4a of the support frames 4, 4 is opened. When the rotary disks 4, 4 are moved to the left (counterclockwise) and the lower end portion 5b abuts against the lower end surface of the left end portion 4a of the support frames 4, 4, the support Frame 4,4
Of the total of four existing line engaging grooves 2 protruding from the outside and exposed to the outside, only the existing line engaging groove 2 located near the left end of the support frames 4, 4 and at the top is opened. The arc length is determined as follows,
The groove lengths of the rail grooves 14, 14 are determined.

Furthermore, this cover 5 has a line hooking part 1 on the upper part thereof for locking a newly installed line 16 such as a communication line.
5 is formed, and a weight 17 is provided at the bottom of the weight 17 for applying its own weight to the covering 5 and constantly keeping the lower end 5b of the covering 5 in abutment against the lower end surface of the left end 4a of the support frames 4, 4. It is integrally installed. This weight 17 has a mounting portion 7 at its lower part.
The side allows the introduction of the existing line 1 in a wedge-like manner between the spear sticking rod 6 and the cover 5 according to the introduction.
This is an inclined surface 19 for moving the line to the position where the lowest existing line engagement groove 2 is opened. In other words, the weight 17 is a member for keeping the lower end 5b of the covering 5 always in contact with the lower end surface of the left end 4a of the support frames 4, 4, and the weight 17 is a member for keeping the lower end 5b of the covering 5 always in contact with the lower end surface of the left end 4a of the support frames 4, 4. It serves as a guide member.

Next, the handling and operation of the line crossing tool will be explained.

First, as shown in FIG. 1, the extended end of the newly installed wire 16 is supported by the support plate 18 from the opposite side of the cover 5, and then the extended end of the newly installed wire 16 is positioned at the uppermost position. The line is secured to the line hanging part 15 by crossing the existing line engagement groove 2. Next, extend the operating rod 6 from the ground toward the existing line 1, and
between the inclined surface 19 and the outer peripheral surface of the operating rod 6,
Fit it into the existing wire 1 (Fig. 3a). After this mating,
Pull down the operating rod 6 to the ground side. Then, as the operating rod 6 is pulled down, a wedge force is generated between the inclined surface 19 of the weight 17 and the outer peripheral surface of the operating rod 6 in response to the pulling down.
Therefore, the cover 5 is moved to the open position (third
Figure b). When the operating rod 6 is further pulled down from this position, the existing line 1 relatively enters the existing line engagement groove 2 at the lowest position (Fig. 3c), and the cover 5 is
Due to the weight of the weight 17, it naturally returns to the position where the existing line engagement groove 2 located at the lowest position is closed. After this, pull down the operating rod 6 further,
Rotate the rotary disks 3, 3. By the way, existing line 1
Since the wire is spanned between utility poles, etc., it may swing (vibrate) up and down and left and right to some extent during line crossing work, but it is unlikely to be severed due to some external accident. Unless there is, it cannot be moved with the turntables 3 and 3. Therefore, the existing line 1 is inserted into the existing line engagement groove 2 located at the lowest position.
After inserting the control rod 6, when the operating rod 6 is further pulled down to the ground side, the rotary disk 3,
Only 3 rotates (Fig. 3d). The rotation of the rotary disks 3, 3 occurs when the existing line 1 abuts against the upper end surface of the left end 4a of the support frames 4, 4.
(Fig. 3e). Therefore, by further lowering the operating rod 6 toward the ground side from this position, the existing line 1 can be pulled out from the open existing line engaging groove 2 at the top (FIG. 4f). Therefore, if the operating rod 6 is further lowered from this position, the new line 16 whose feeding end is connected to the cover 5 will cross over the existing line 1 and be lowered to the ground (Fig. 4 g to 4). i). After this,
The feeding end of the existing wire 1 is removed from the line hooking section 15, and the line crossing work is completed.

It should be noted that the operating rod 6 may be constructed of a multistage rod that is moved in and out in stages in the longitudinal direction.
In addition, a linear object that is fed out according to the number of steps of the rod is placed inside the multi-stage rod body, and a counter is installed to detect the length of the linear object that is fed out, so that the height position of the existing wire 1 can be determined. Of course, it is also possible to configure.

[Effects of the invention] As is clear from the above explanation, this invention provides the following excellent effects.

By fitting the lower end of the operating rod into the existing line and pulling the operating rod downward, the guide member engages the existing line into the existing line engagement groove, and from that position, further By pulling the operating rod downward, the turntable can be rotated to allow the existing line to escape from the top of the cover to the upper side and intersect with the existing line.

[Brief explanation of the drawing]

Figure 1 is a view of the line crossing tool according to the present invention viewed from a direction perpendicular to the longitudinal direction of the existing line, and Figure 2 is a view of the line crossing tool with no cover attached as seen from the line crossing direction. FIGS. 3 and 4, which are partial cross-sectional views showing a part thereof in cross-section, are diagrams for explaining the line crossing process. In the figure, 1 is an existing line, 2 is an existing line engagement groove, 3 is a rotary disk, 4 is a support frame, 5 is a cover, 5a is an upper end, 5b is a lower end, 6 is an operating rod, 16 is a new line, 17 is a weight, 18 is a support plate (new line guide member), and 19 is an inclined surface.

Claims (1)

[Scope of utility model registration request] An operating rod having a predetermined length to be fed out from the ground onto an existing line, a support frame provided on the operating rod to extend the rod, and a rod rotatably supported by the support frame around a horizontal axis. a rotating body having an existing line engagement groove on its outer periphery that engages at least the outer periphery of the existing line; When a new line is secured to the top of at least one existing line engagement groove formed on the outer periphery and the operating rod is supported in a substantially vertical direction, the line may be moved along the outer periphery of the rotating body due to its own weight. A cover is moved so that its lower end touches the side of the operating rod, and by pulling the operating rod downward to the lower end of the cover, the existing line is connected to the rotating body from between the lower end and the operating rod. a guide member for guiding the newly installed wire into the engagement groove of the existing wire; and a cover in which the newly installed wire is locked to the outer periphery of the rotating body on the opposite side of the cover at a predetermined guide interval to the support frame. a newly installed wire guide member supported from the upper part of the body at a distance from the opening width of the engagement groove; By pulling it downward, the guide member engages the existing line into the existing line engagement groove, and by pulling the operating rod further downward from that position, the rotary disk rotates and the existing line is removed from the existing line engagement groove. A line crossing tool characterized in that it is configured to escape and cross an existing line.