JP3002327U - Guide saw - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a saw with a guide that is easy to remove a rigid pipe and is excellent in safety and versatility. [Structure] The saw with guide of the present invention forms a base that can be mounted on the main body of the saw, forms a pipe guide having a semi-tubular length on the side of the base, and circular saw to the body of the pipe guide. A cable that has a semi-tubular length to the support piece by penetrating a slit that exposes the blade edge part of the blade along the axial direction, and erecting a support piece on the rear end side of the inner peripheral surface of the pipe guide. The protection guide is fixed to the pipe guide at a fixed interval and coaxially arranged and fixed, and the handle is erected on the base, and the base is sawed with the edge of the circular saw blade exposed from the slit. Removably attached to the body of the board.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a saw machine with a guide capable of sawing a rigid pipe such as a steel pipe containing a cable without cutting the stored cable when longitudinally cutting the rigid pipe. More specifically, the present invention relates to a novel saw machine with a guide that can change the pipe guide and the cable protection guide according to the diameter of a rigid pipe by using the same saw machine body.

[0002]

[Prior art]

 Generally, communication cables such as telephone lines are installed in underground structures such as handholes (hereinafter referred to as HH) provided on roads or sidewalks. This type of communication cable is housed in a rigid pipe such as a steel pipe or a vinyl pipe (hereinafter abbreviated as V pipe) and buried in the ground. However, in the above-mentioned HH, it is laid between facing wall surfaces. However, if the number of line facilities is increased, it is necessary to expand the wall surface area to install additional cables, that is, to install a large HH.

However, in the HH, the stored cables are arranged so as to be exposed from the pipe end portion of the existing pipe. Therefore, when the wall surface of the HH is enlarged, the rigidity of the rigid pipe used in the current pipeline is reduced. Since the pipe end is exposed and the cable laid between the walls is already connected as a working line, it is necessary to remove the pipe end of the existing pipe from the cable without cutting the cable. .

Therefore, conventionally, an existing pipe in which the cable is housed is held by a general-purpose saw machine by hand, and a saw blade is applied to the outer periphery of the existing pipe from the pipe mouth along the axial direction of the wall surface. The pipe end of the existing pipe was removed by pulling and then sawing in the circumferential direction near the wall.

[0005]

[Problems to be Solved by the Invention] However, in such a conventional method, in order to allow the operator to visually check and manually remove the workpiece, the operator should slide the deep cutting or saw blade and store it. Cable or nearby cables may be damaged or the operator himself may be injured.In addition, manual work such as this is inefficient in working and requires skilled techniques, so securing personnel is not possible. There were problems such as difficulty.

[0006]

[Means for solving the problem]

 In view of the above-mentioned reasons, the present invention has an excellent safety because it is easy to remove an existing pipe, that is, a rigid pipe, by providing a pipe guide and a cable protection guide on the base attached to the main body of the saw machine. By providing a saw with a guide for vertical cutting, and by further providing a handle on the base and detachably attaching the base to the main body of the saw, the diameter of the rigid pipe can be reduced. Even if they are different, it is possible to provide a saw with a guide that is extremely versatile by appropriately selecting a base manufactured according to various pipe diameters.

[0007]

[The purpose of the device]

 It is an object of the present invention to provide a saw with a guide which is easy to remove the rigid pipe and is excellent in safety and versatility by the above means.

[0008]

[Constitution of device]

 The structure of the saw with guide of the present invention forms a base that can be mounted on the main body of the saw, forms a pipe guide having a semi-tubular length on the side of the base, and forms a circular saw blade on the body of the pipe guide. A slit that exposes the blade edge portion of the pipe is penetrated along the axial direction, and a supporting piece is erected on the rear end side of the inner peripheral surface of the pipe guide, and a cable with a semi-tubular length is attached to the supporting piece. The guide is placed at a fixed distance from the pipe guide and coaxially arranged and fixed, and at the same time the handle is erected on the base so that the base of the circular saw blade is exposed from the slit. It is configured to be detachably attached to the main body of the saw machine.

[0009]

【Example】

 The present invention which achieves such an object will be described with reference to the drawings of the following embodiments.

FIG. 1 is a schematic front view of a guided sawing machine according to a first embodiment of the present invention, FIG. 2 is a schematic side view of a guided sawing machine of the first embodiment of the present invention, and FIG. FIG. 4 is a schematic plan view of a base used in the guided sawing machine of the first embodiment of the present invention, FIG. 4 is a schematic front view of a guided sawing machine of the second embodiment of the present invention, and FIG. It is a general | schematic side view of the saw with a guide of 2nd Example of a device.

As shown in FIGS. 1 to 3, the present invention provides a saw machine 1 having a circular saw blade 1a, which has a base 2 of an appropriate shape that can be mounted on the main body of the saw machine 1, and the base 2 A tube guide 3 having a semi-tubular length is formed on a side of the tube guide 3, and a slit 3a for exposing a cutting edge portion of the circular saw blade 1a is axially penetrated through a body portion of the tube guide 3; A support piece 4 is erected on the rear end side of the inner peripheral surface of the pipe guide 3, and a cable protection guide 5 having a semi-tubular length is attached to the support piece 4 at a constant distance from the pipe guide 3. Is placed and is coaxially arranged and fixed, and a handle 2a is erected on the base 2, and the base 2 is exposed to the slit 3a of the saw blade 1 of the circular saw blade 1a. The point is that it is detachably attached to the main body.

That is, the saw with a guide of the present invention is used for longitudinally cutting a rigid pipe such as a buried pipe accommodating a cable such as a telephone line in the axial direction. As shown in the first embodiment, it comprises a saw machine 1 having a circular saw blade 1a such as an existing disc grinder, and a base 2 of an appropriate shape that can be mounted on the main body of the saw machine 1.

As shown in FIG. 3, the base 2 is made of a substantially rectangular metal plate material, has a notch 2b at the center of one longitudinal end, and has a notch 2b at the other end. The side is provided with a through hole 2c for using a fixture 6 described later.

As shown in FIG. 1, a pipe guide 3 having a semi-tubular length having a semicircular cross section is integrally or separately formed on the side of the base plate 2. As shown in FIGS. 2 and 3, a slit 3a for exposing the blade tip portion of the circular saw blade 1a is provided in the body portion so as to penetrate along the axial direction.

Further, the pipe guide 3 is curved to the lower surface side of the base 2, and at the rear end side of the inner peripheral surface of the pipe guide 3, at least a height higher than the wall pressure of the rigid pipe to be sawed. A supporting piece 4 having a vertical shape is erected, and a cable protection guide 5 having a semi-tubular length slightly smaller than the pipe guide 3 is fixed to the supporting piece 4. The support piece 4 allows the tube guide 3 and the cable protection guide 5 to be coaxially arranged at a fixed interval.

On the other hand, a handle 2a bent toward the rear end portion in an L-shaped cross section is provided upright at the tip portion of the upper surface of the base plate 2.

According to the present invention, the base 2 constructed as described above is detachably attached to the main body of the saw machine 1 in a state where the cutting edge portion of the circular saw blade 1a is exposed from the slit 3a. Specifically, as in the embodiment, after the notch 2b of the base 2 is brought into contact with the groove (not shown) of the protrusion 1b on the bottom surface of the saw 1, the saw 2 is inserted into the through hole 2c of the base 2. It suffices to insert a fixing portion 1c such as a bolt protruding from the bottom surface of 1 and fasten a fixing tool 6 such as a nut to the bolt 1c.

The outer periphery of the saw blade 1a of the saw board 1 is provided with a saw blade cover 7 so as to avoid contact between the operator and the saw blade 1a, as in the second embodiment shown in FIGS. 4 and 5. It is preferable to attach and detach the chip, and at that time, the chip discharge port 7a is opened downward to prevent the chips from scattering around during the operation.

[0019]

[Action]

 In order to use the saw with guide of the present invention, first, hold the handle 2a standing on the base 2 by hand and move the inner peripheral surface of the tip portion of the pipe guide 3 from the pipe mouth of the rigid pipe to the outer peripheral face. Then, the cable protection guide 5 is inserted between the inner peripheral surface of the rigid tube and the cable housed in the rigid tube.

Next, the power source of the saw blade 1 is operated to rotate the saw blade 1a, and the handle 2a or the main body portion of the saw blade 1 is carried, and the saw blade is pushed out along the axial direction of the rigid pipe. It is what you do.

[0021]

[Effect of device]

 As described above, according to the present invention, since the cable protection guide is provided on the base to be attached to the main body of the saw machine, there is no risk of damaging the cable, and even a beginner can easily perform the removal work and the rigid pipe for sawing. The saw blade is not slippery because it is sawed by the pipe guide and the cable protection guide, so it is not only safe, but also the handle is provided on the base and this base is sawed. Since it is configured to be detachably attached to the main body of the machine, it is possible to utilize an existing saw machine, and even if the diameter of the rigid pipe is different, a base made according to various pipe diameters can be appropriately used. This is an epoch-making and meaningful device that is versatile and can be selected.

[0022]

[Brief description of drawings]

FIG. 1 is a schematic front view of a saw with a guide according to a first embodiment of the present invention.

FIG. 2 is a schematic side view of a saw with a guide according to the first embodiment of the present invention.

FIG. 3 is a schematic plan view of a base used in the saw with a guide according to the first embodiment of the present invention.

FIG. 4 is a schematic front view of a saw with a guide according to a second embodiment of the present invention.

FIG. 5 is a schematic side view of a saw with a guide according to a second embodiment of the present invention.

[0023]

[Explanation of symbols]

 1 Saw blade 1a Circular saw blade 1b Projection 1c Fixed part 2 Base 2a Handle 2b Notch 2c Through hole 3 Pipe guide 3a Slit 4 Support piece 5 Cable protection guide 6 Fixture 7 Saw blade cover 7a Chip discharge port

Claims (1)

[Scope of utility model registration request] 1. A saw machine equipped with a circular saw blade, wherein a base of an appropriate shape that can be mounted on the main body of the saw is formed, and a pipe guide having a semi-tubular length is formed on a side of the base. A slit that exposes the blade portion of the circular saw blade is provided through the body of the pipe guide along the axial direction, and a supporting piece is erected on the rear end side of the inner peripheral surface of the pipe guide. A cable protection guide having a semi-tubular length is fixed to the support piece by arranging the same at a constant interval and coaxially with the support piece, and at the same time, a handle is erected on the base to fix the base. A saw machine with a guide, characterized in that the circular saw blade is detachably attached to a main body of the saw machine in a state where a cutting edge portion thereof is exposed from a slit.