JP4373380B2 - Nominal line capture tool for wiring - Google Patents

Description

The present invention relates to a call-line capturing tool for communication lines.

When passing a new wire or cable into an existing conduit, for example, from one manhole, a FRP wire rod with a camera attached to the tip is attached by the camera. While searching for the gap in the conduit, push forward, pull out the wire rod that has advanced to the other manhole from the manhole, and add new wires and cables to the nominal wire attached to the wire rod After connecting the wires, the wire rod and the call wire are pulled back.

The above-mentioned construction method requires a space that allows an operator to directly grab and take out the nominal line of the wire rod. In such a working environment where the space cannot be secured, the nominal line cannot be pulled out. There was a point.
JP-A-10-70807 JP-A-11-341637

The present invention has been made to solve the problems described in the background art, and even in a narrow space where an operator cannot directly grab and remove the nominal line of the wire rod, the nominal line can be extracted. It is an object of the present invention to provide a call-line capturing tool for communication.

In this invention, a plurality of short cylinders of different sizes are arranged concentrically so as to be slidable and when the innermost short cylinder is pushed out, The short cylinder also extends in the shape of a bamboo shoot, and when the innermost short cylinder is retracted, the other short cylinder is also retracted in conjunction with the short cylinder, and the expansion / contraction member can be expanded and contracted in stages. The camera device is installed in the case, and the distal end portion of the link member which is urged so as to always maintain a linear posture by the spring force of the spring and can be bent only in one direction is attached to the case of the telescopic member. The link member is fixed to the rear end portion of the cable so that it can be bent in the opposite direction with respect to the camera device, and the rear end portion of the link member is rotated around the rear end lower portion of the short piece and the front end lower portion of another short side. It is fixed to the tip of the joint member that is movably connected, and the rear end of another short side of the joint is attached to the rear. A pinion that is fixed to the distal end of the long cylinder provided with a screw thread part and is screwed into the rack screw part of the long cylinder, and provided with a joint drive member that can move the rack screw part back and forth by rotating the pinion, A cylindrical slider is attached in front of the tip of the long cylinder, the slider and the joint driving member are connected with a connecting rod, and the joint member is extended, At the tip of the short piece, the tip of the muscle material is pivotably attached, and the rear end of the muscle material is pivotally attached to the slider. A hollow handle member that is provided with a handle and is bent slightly downward is attached, and a wire is inserted from the hollow portion of the handle member through the elongated tube, the joint member, and the link member to the telescopic member. The tip of the wire is fixed to the innermost short cylinder of the elastic member, and the expansion / contraction A hook for catching a nominal line is detachably attached to the tip of the innermost short cylinder of the material, and the joint member and the link member are extended, and the rear of the telescopic member on the opposite side to the camera device. One end of the string is fixed to the end, and the other end is fixed to the string winder.

Since the present invention is configured as described above, the following effects can be obtained.
(1) If there is a space through which the telescopic member and the long cylinder can be inserted, the call line can be captured and pulled out by the call line catching hook while confirming the position of the call line with the camera.
(2) The telescopic member can be expanded and contracted stepwise by moving the wire back and forth.
(3) The joint member can be bent by rotating the pinion and moving the joint drive member back and forth.
(4) By turning the string winder and winding the string, the link member can be bent and slackened to return the link member to the original posture.
(5) Since the joint member is provided, the area where the call line can be captured is expanded.

The purpose of providing a call-line catching tool that can take out the call line even in a narrow space where the operator cannot directly grab the call-out line of the wire rod and take it out. This was realized by a combination of a telescopic member, a link member, a joint member and a long tube provided with a hook.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 2, when a plurality of short cylinders 1a, 1b, 1c,... Having different sizes are arranged concentrically so as to be slidable and the innermost short cylinder 1a is pushed out, The other short cylinders 1b, 1c,... Are also sequentially extended in the shape of a bamboo shoot in conjunction with the cylinder 1a, and when the innermost short cylinder 1a is retracted, the other short cylinders 1b, The camera apparatus B is installed in the case 2 of the extendable member A that can be expanded and contracted step by step so that 1c,.

The tip of the link member C, which is urged so as to always maintain a linear posture by the spring force of the spring 3 and can be bent in only one direction, is linked to the rear end of the case 2 of the expansion member A. The member C is fixed to the camera device B so that it can be bent in the opposite direction.

As shown in FIG. 1, the rear end portion of the link member C is fixed to the front end portion of the joint member D formed by rotatably connecting the lower rear end portion of the short piece 4 and the lower front end portion of another short side 5, The rear end portion of another short side 5 of the joint member D is fixed to the distal end portion of the long tube E provided with the rack screw portion 6 at the rear portion.

As shown in FIG. 3, a pinion 7 that is screwed into the rack screw portion 6 of the long cylinder E is provided, and by rotating the pinion 7, a joint driving member F that can move the rack screw portion 6 back and forth is provided. A cylindrical slider 8 is attached in front of the tip, and the slider 8 and the joint driving member F are connected by a connecting rod 9. Therefore, when the pinion 7 is rotated and the joint driving member F is moved back and forth, the slider 8 is also moved back and forth while sliding on the long tube E in conjunction therewith.

With the joint member D extended, the distal end portion of the muscle material 10 made of a rigid body such as metal is rotatably attached to the upper end of the short piece 4 of the joint member D, and the rear end portion of the muscle material 10 is attached to the slider. 8 is attached to be rotatable.
Therefore, when the pinion 7 is rotated and the joint driving member F is retracted, the slider 8 is retracted in conjunction therewith, and the muscle material 10 pulls back the upper end of the short piece 4 of the joint member D. As indicated by the priority line 15, the joint member D can be bent.

At the rear end of the long tube E, a string winder 11 is provided at the top, and a hollow handle member G curved slightly downward is attached, and the wire 12 is connected to the long tube E, the joint member from the hollow portion of the handle member G. D, the elastic member A is inserted through the link member C, and the tip of the wire 12 is fixed to the innermost short cylinder 1a of the elastic member A. Therefore, when the wire 12 is pushed in, the innermost short cylinder 1a of the elastic member A is pushed out from the state shown in FIG. 2 to the state shown in FIG. 1, and the other short cylinders 1b, 1c,. It is designed to grow like a bamboo shoot.

The wire 12 may be a single wire of steel, a stranded wire, or a combination of a single wire and a stranded wire, and a coating such as a heat shrink tube may be applied on the wire 12. .

For example, as shown in FIG. 4, in order to ensure that the call line can be captured even when the call line is vertically or horizontally, as shown in FIG. In addition, a hook 13 for catching a call line provided with claws 16 in the three lower directions is detachably mounted.

In a state where the joint member D and the link member C are extended, one end of the cord 14 is fixed to the rear end portion of the telescopic member A opposite to the camera device B, and the other end is fixed to the string winder 11. . Therefore, when the string winder 11 is turned and the string 14 is wound, the link member C can bend the link member C in a curved shape as indicated by a double dotted line 17 in FIG. In FIG. 1 and FIG. 2, the string 14 is intentionally slacked to make the string 14 easier to see, but it is actually in a tense state.

In FIG. 1, reference numeral 18 denotes a power supply device for supplying power to the camera device B, which includes a switch, an outlet for monitor connection, and the like. It is arranged. A dry battery is used as the power source.

In the operation of drawing the nominal line from the narrow space, connecting the wires and cables to the nominal line, and drawing the wires and cables from the narrow space into the conduit, etc. -It can be used as a tool for capturing and pulling out the nominal line at the support section.

The side view of the state which extended the expansion-contraction member which shows an example of implementation of this invention The top view of the state which contracted the expansion-contraction member which shows an example of implementation of this invention Schematic longitudinal sectional view of the joint drive member A perspective view showing an example of implementation of a hook for catching a call wire

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Short cylinder 2 Case 3 Spring 4 Short side 5 Another short side 6 Rack screw part 7 Pinion 8 Slider 9 Linking rod 10 String material 11 String winder 12 Wire 13 Calling line catching hook 14 String 15 Two Priority line 16 Claw 17 Double dotted line 18 Power supply device A Telescopic member B Camera device C Link member D Joint member E Long tube F Joint drive member G Handle member

Claims (1)

(A) The expansion / contraction member (A) that can be expanded and contracted stepwise includes a plurality of short cylinders (1a, 1b, 1c,...) Of different sizes arranged concentrically so as to be slidable. When the short cylinder (1a) is pushed out, the other short cylinders (1b, 1c,...) Sequentially extend in the shape of a bamboo in conjunction with the short cylinder (1a), and the innermost short cylinder (1a) is extended. When retracted, the other short cylinders (1b, 1c,...) Are sequentially drawn in conjunction with the short cylinder (1a).
(B) A camera device (B) is installed in the case (2) of the elastic member (A).
(C) The tip of the link member (C), which is urged so as to maintain a linear posture at all times by the spring force of the spring (3) and can be bent only in one direction, is attached to the extension member (A). -The link member (C) is fixed to the rear end of the frame (2) so as to be able to bend in the opposite direction with respect to the camera device (B).
(D) The distal end of the link member (C) is connected to the lower end of the short piece (4) and the lower end of the other short side (5) so as to be rotatable. Fixed to the part,
(E) The rear end portion of the joint member (D) is fixed to the front end portion of a long cylinder (E) provided with a rack screw portion (6) at the rear portion.
(F) A joint drive that includes a pinion (7) that is screwed into the rack screw portion (6) of the long cylinder (E), and that can rotate the rack screw portion (6) forward and backward by rotating the pinion (7). A member (F) is provided;
(G) A cylindrical slider (8) is mounted in front of the tip of the long cylinder (E), and the slider (8) and the joint driving member (F) are connected to the connecting rod (9). )
(H) With the joint member (D) extended, the distal end portion of the muscle material (10) is rotatably attached to the upper end of the short piece (4) of the joint member (D). 10) The rear end of the slider (8) is rotatably attached.
(I) A hollow handle member (G) that is provided with a string winder (11) at the upper part and is curved slightly downward is attached to the rear end of the long tube (E), and the handle member (G) The wire (12) is inserted from the hollow portion through the elongated tube (E), the joint member (D), and the link member (C) to the telescopic member (A), and the wire (12) The tip is fixed to the innermost short cylinder (1a) of the elastic member (A).
(Nu) A hook (13) for capturing a call wire is detachably attached to the tip of the innermost short cylinder (1a) of the elastic member (A).
(L) In a state where the joint member (D) and the link member (C) are extended, a string (14) is attached to the rear end of the telescopic member (A) opposite to the camera device (B). One end is fixed and the other end is fixed to the string winder (11).
Nominal wire catching tool featuring the above features.

Images