JPH04124820U - Tools for lead dissolution - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability of deleading without using fire when dismantling lead pipes at the connections of communication lead cables. [Structure] A cutter part in which a plurality of cutters 6 each having two circular blades 7 formed in the axial direction are connected by links 4 and 5, an arm 2 in which one end of the cutter part is connected to the tip, and the cutter part A threaded rod 8 and a tightening tool 9 are provided, each having a gripping part 1 whose other end is connected to a tip thereof, and pivotally supporting the arm 2 and the gripping part 1, and tightening the arm 2 and the gripping part 1 to each other. It is configured by providing.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can be used when dismantling lead pipes used at the connections of lead cables for communication lines. It is related to lead decomposition tools, which can be dismantled safely without the use of fire. The present invention relates to a tool for deleading that can perform the following steps.

0002

[Conventional technology]

Traditionally, lead pipes have been dismantled using torch lamps that use flames to melt the lead, or hatchet generators for deleading. A method using tools such as Nou was used. However, especially fires inside underground manholes The use of There is a high possibility that communications and electrical equipment will be disrupted, so consider the impact on society. Therefore, it is necessary to establish a lead decomposition method that does not use fire. Much deleadation from these points Currently, tools are being developed.

0003

[Problem that the idea aims to solve]

Therefore, as a tool for cutting open and dismantling lead pipes, a tool is used to cut the lead pipes into rounds. However, this tool only forms one groove in the lead pipe in one operation; There is a problem with poor business performance.

0004 The purpose of this invention is to form two grooves in a lead pipe in one operation. It is an object of the present invention to provide a lead decomposition tool with greatly improved performance.

[0005]

[Means to solve the problem]

For this reason, the delead tool of the present invention has a plurality of cylinders each having two circular blades formed in the axial direction. A cutter section that connects the cutter with a link, and an arm that connects one end of the cutter section to the tip. the arm, and a gripping part having the other end of the cutter part connected to the tip thereof; and the gripping section, and also tightening the arm and the gripping section together. It is configured with a tightening part.

[0006]

【Example】

Examples of the present invention will be described below. Figure 1 shows an example of lead decomposition tool A. FIG. 2 is a plan view of a portion thereof. This tool A for deleading is attached to the grip part 1. The arm 2 is pivotally supported on the arm shaft 3, and the tip of the grip part 1 and the arm 2 are A chain-shaped cutter part is connected between the tip of the cutter and the tip of the cutter. This cutter part is It is possible to remove the side of the grip part 1, and the outer link 4 has two pieces on the outside. , a plurality of cutters 6 interconnected two on the inside by inner links 5. Each force The cutter 6 has two circular blades 7 arranged in the axial direction with their cutting edges separated by 5 mm. It is. Reference numeral 8 denotes a threaded rod inserted into the arm 2 from the grip part 1, and its tip end By adjusting the fastener 9 screwed in from the Tightening is now taking place. This threaded rod 8 and tightening tool 9 constitute a tightening part. do.

[0007] FIG. 3 is a plan view of the lead pipe holder B for deleading, and FIG. 4 is a side view. This lead pipe holder B is a holding fitting 20 with an L-shaped side surface, and the holding fitting 20 can be slid through. It consists of a main body 22 with a thickness of 5 mm and a length of 50 mm in which a long hole 21 of 30 mm is formed. , the washer 24 is inserted into the male threaded part 23 at the upper end of the holding fitting 20, and the thumbscrew 25 is inserted. They are screwed together.

[0008] In the deleading work, as shown in Figure 5, a deleading tool A is wrapped around the outer circumference of the lead pipe C. attached, grip the grip part 1 and rotate it around the lead pipe C within a range of about 30 degrees (see Figure 1). The fastener 9 is gradually tightened while rotating. Through this work, lead pipe C Two cuts with an interval of 5 mm corresponding to the interval between the two circular blades 7 of the cutter 6 in the circumferential direction. Form 30 in two places.

[0009] Next, as shown in Figure 6, loosen the fastener 9 and remove the deleading tool A. Two outer bands 31 surrounded by the cuts 30 are cut using a technical cutter (not shown). is cut and the cut portion 32 is pulled outward. And a lead winding tool (not shown) ), wind up the upper part of the outer band 31, and fit the above-mentioned lead pipe holder B to the top. It holds the middle band 33 surrounded by the outer band 31 parts on both sides. At this time, hold the lead pipe For tool B, the tip of the holding metal fitting 20 enters the underside of the middle band 33 and tightens the thumbscrew 25. By doing so, the middle band 33 is held against the outer part 34 of the lead pipe C. stop Then, all of the outer bands 31 at the two locations are removed. The removed portions are indicated by diagonal lines.

0010 After removing the outer bands 31 on both sides as described above, use a sheet metal cutter (not shown). to cut the cylindrical middle band 33 left in the center in the axial direction (see Fig. 7), Remove this. At this time, as shown in FIG. 8, the middle band 33 is held by the lead pipe holder B. You can create a gap by moving the area slightly, so you can Insert the blade of a sheet metal cutter into the hole and cut. D is a cable. And finally the lead pipe Remove retainer B.

[0011] In this way, two cuts 30 are formed with the deleading tool A, so the cuts The outer band 31 created in step 30 can be deleted, and the deleted part of the outer band 31 can be deleted. Since the middle band 33 can be cut by inserting a sheet metal cutter, the workability of deleading is greatly improved. I come to do it.

0012

[Effect of the idea]

From the above, according to the present invention, not only is it highly safe because it does not use fire, but it also Since it is possible to make two cuts in one operation, the subsequent process of deleading can be done easily. This method has the advantage of making the work extremely simple and efficient, and improving the workability of lead plating.

[Brief explanation of drawings]

FIG. 1 is a side view of a lead decomposition tool according to an embodiment of the present invention.

FIG. 2 is a plan view of a part of the lead dissolving tool.

FIG. 3 is a plan view of the lead pipe holder of the same embodiment.

FIG. 4 is a side view of the lead pipe holder.

FIG. 5 is an explanatory diagram of forming a cut in a lead pipe with a deleading tool.

FIG. 6 is an explanatory diagram of holding the middle band of a lead pipe with a lead pipe holder.

FIG. 7 is an explanatory diagram of cutting and removing the middle band of a lead pipe.

FIG. 8 is an explanatory diagram of an insertion space for a sheet metal cutter that cuts the middle band of a lead pipe.

[Explanation of symbols]

A: Lead decomposition tool, 1: Gripping part, 2: Arm, 3: Arm shaft, 4: Outer link, 5: Inner link, 6: Cutter, 7: Circular blade, 8: Threaded rod, 9: Fastener , B: Lead pipe holder for deleading, 20: Holding metal fitting, 21: Guide hole, 22: Main body, 2
3: washer, 24: thumbscrew, C: lead pipe, 30: notch, 31: outer band, 32: cut section, 33: middle band, 34: outer part, D: cable.

Claims (1)

[Scope of utility model registration request] Claim 1: A cutter section in which a plurality of cutters each having two circular blades formed in the axial direction are connected by a link, an arm with one end of the cutter section connected to the tip, and an arm with the other end of the cutter section connected to the tip. A lead dissolving tool, comprising: a gripping part connected to the arm; and a tightening part that pivotally supports the arm and the gripping part, and tightens the arm and the gripping part to each other.