JP2520710Y2 - Cable cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a hydraulic cable cutter for cutting electric wires and the like.

[Conventional technology]

When cutting electric wires, special cutters are used according to the outer diameter of the electric wires. As the type of cutter, there are a manual type such as a nipper having a blade at the tip of a bifurcated arm, and a driving type using an electric motor or a hydraulic circuit. As an example of the latter hydraulic type, there is one previously proposed by the present applicant in Japanese Patent Application No. 56-39876.

This allows the two blades to rotate about a common pivot,
The blade is provided with a mechanism for opening and closing the blade by inserting and removing a wedge-shaped block on the base end side of each blade, and the structure is such that the block is moved forward and backward by a hydraulic cylinder.

The two blades move like scissors to cut the wire by shearing, and the driving force necessary for this cutting is supplied by a hydraulic cylinder. Therefore, compared to the manual type,
It excels in that the shearing force is large and the work is easy.

[Problems to be solved by the device]

In some cases, the electric wire is cut on a utility pole, and the cut electric wire is divided into two, so even if one is supported by hand, the other falls down. For this reason, in normal work, it is necessary to support two places with a tool between them with a cutter to prevent such electric wires from dropping and scattering of burning wires, and at least three people must perform the cutting work. I won't.

Further, for a worker who cuts while holding a cutter, immediately after cutting, one of the end lines may jump up and hit the body or face, which is also a safety issue.

The problem to be solved in the present invention is to make it possible for a small number of people to easily and safely cut an electric wire or the like.

[Means for solving the problem]

According to the present invention, two shearing cutter heads are rotatably provided around a pivot at a tip of a main body, and a wedge-shaped pressing block is provided at a tip of an actuator of a cylinder provided in the main body. A cable cutter for rotating the cutter head in a cutting direction by pushing it into a pin provided on a base end side of the head, wherein the two cutter heads have a peripheral surface of a material to be cut on the same side surface. It is characterized by comprising a holding mechanism capable of advancing and retracting toward the surface and elastically pressing the material to be cut.

[Action]

When the actuator of the cylinder is moved forward, the wedge-shaped pressing block pushes the pin and the two cutter heads rotate in the cutting direction, respectively, and cut the material to be cut such as the electric wire of the wire by shearing. As the cutter head rotates in the cutting direction, the holding mechanism abuts around the material to be cut, and after cutting, the material to be cut remains constrained by the elastic pressing of the holding mechanism. Therefore, the cut pieces of the material to be cut corresponding to the side provided with the holding mechanism will not be held by the holding mechanism and will not drop or scatter the burning wire.

〔Example〕

FIG. 1 is a front view showing an embodiment of the cable cutter of the present invention, and FIG. 2 is a bottom view thereof.

In the figure, the main body 1 of the cable cutter has two arms 2a and 2b integrally formed at one end, and two cutter heads 4 and 5 are respectively rotated on a pivot 3 fixed to the tips of these arms 2a and 2b. It is attached freely. The cutter heads 4 and 5 are
Each tip has replaceable 4a and 5a, and one side of each is connected by a return spring 6. The return spring 6 is formed by connecting both ends of a coil spring provided around the pivot 3 to the cutter heads 4 and 5, and has a function of urging the cutter heads 4 and 5 in the opening direction. Also,
Cylindrical pins 4b and 5b on the inner wall on the rear end side of the cutter heads 4 and 5.
Is provided so as to project inward.

The operation of opening the cutter heads 4 and 5 is performed by the hydraulically driven cylinder 7 provided integrally with the main body 1. The cylinder 7 communicates with a port 7a provided at the base end of the main body 1, and a hose (not shown) from a hydraulic pump is connected to the port 7a to supply hydraulic oil. The cylinder 7 is equipped with an actuator 8 that moves in the cutter head 4 and 5 directions by supplying hydraulic oil. A pressing block 9 is inserted into the tip of the actuator 8 between the cutter heads 4 and 5 and hits the pins 4b and 5b to push them.
Attach. As shown in FIG. 1, the pressing block 9 has a wedge shape with its tip side narrowed so that it can be inserted into the upper and lower pins 4b, 5b, and its front surface has a gentle curve.

Further, the cutter heads 4 and 5 are provided with a holding mechanism 10 for holding a cut electric wire or the like. Each of the holding mechanisms 10 is incorporated in the same side of the cutter heads 4 and 5, and a holding rod 12 is slidably provided on a base block 11 integrated with the cutter heads 4 and 5. FIG. 3 is a sectional view taken along the line I--I of FIG. 1, in which the holding rod 12 is inserted into the base block 11, and the guide bolt 11a fixed to the base block 11 penetrates through the guide hole 12a provided in the longitudinal direction. Are arranged. In addition, an electric wire W is attached to the tip of the holding rod 12.
A holding plate 12b for receiving the spring is integrated, and a compression coil spring 13 is incorporated between the holding plate 12b and the base block 11. The compression coil spring 13 urges the holding rod 12 in the direction of the electric wire W,
When there is no load, the condition shown in Fig. 1 is maintained. In addition, holding mechanism
The arrangement of 10 is incorporated in such a manner that the axis of the holding rod 12 is directed toward substantially the center of the electric wire W to be cut as shown in the figure.

In the above configuration, when cutting the electric wire W, the main body 1
Grasp the wire W between the blades 4a and 5a as shown in FIG.
Sandwich. Next, when hydraulic oil is supplied to the cylinder 7, the actuator 8 moves to the left in FIG. As a result, the pressing block 9 gradually enters the pins 4b and 5b, and the wedge shape on the front surface of the pressing block 9 causes
4b and 5b start to move away from the axis of the main body 1. Therefore, the upper cutter head 4 rotates counterclockwise and the lower cutter head 5 rotates clockwise, so that each blade 4
The a and 5a cut into the electric wire W and cut it.

During such movement of the cutter heads 4 and 5, the holding plate 12b hits the electric wire W, the compression coil spring 13 contracts as the cutter heads 4 and 5 rotate, and the holding plate 12b is located on the base block 11 side. Move to. Therefore, the elastic reaction force of the compression coil spring 13 acts on the electric wire W, and even after the electric wire W is cut, the end portion of the electric wire W is retained and held by the upper and lower holding plates 12b. Therefore, if the operator grasps the electric wire W on the side not provided with the holding mechanism 10 with a tool or the like, the electric wire W on the side to be cut off after cutting is still held by the holding mechanism 10. For this reason, it is possible to prevent the electric wire W from dropping and the burning wire to be scattered immediately after cutting, and the electric wire W can be safely cut.

When the cutting work is completed, the hydraulic oil is drained to return the actuator 8 to the state shown in FIG.
4,5 also return to their original posture. As a result, the compression coil spring 13 is also restored and the holding rod 12 returns to the axial line side of the main body 1. Then, at this time, if the operator handles the cut-off electric wire W by a hand, the electric wire W can be collected without dropping.

It should be noted that in the embodiments, the cutting of the electric wire has been described, but the cable cutter of the present invention can also be used for cutting various other wires and reinforcing bars for construction.

[Advantages of the Invention] Since the material to be cut such as the wire and the electric wire immediately after cutting is restrained by the holding mechanism, the material to be cut is not dropped and a single worker can easily perform the cutting work.

Since the material to be cut remains restrained by the holding mechanism, it is possible to work safely without the burning lines of the material to be cut or the like being scattered or hitting the operator's body or face.

[Brief description of drawings]

FIG. 1 is a cutaway front view of a cable cutter showing an embodiment of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is II of FIG.
FIG. 1: Main body, 2a, 2ba: Arm 3: Axis, 4,5: Cutter head 4a, 5a ... Blade, 4b, 5b: Pin 6: Return spring, 7: Cylinder 8: Actuator, 9: Press block 10: Hold Mechanism, 11: Base block 12: Holding rod 13: Compression coil spring W: Electric wire

Claims (1)

(57) [Scope of utility model registration request] 1. A main body is provided with two shearing cutter heads rotatably around a pivot, and a cylinder-shaped actuator provided on the main body is provided with a wedge-shaped pressing block at the front end thereof. A cable cutter for rotating the cutter head in a cutting direction by pushing the pin into a pin provided on a base end side of the cutter head, wherein the two surfaces of the two cutter heads are provided with a material to be cut on the same side surface. A cable cutter comprising a holding mechanism capable of advancing and retracting toward a peripheral surface and elastically pressing a material to be cut.