TWI595720B - Grips - Google Patents

Description

Wire gripper

The present invention relates to a wire gripper for use in a device for holding an electric wire when a wire is stretched during a division work of an electric wire.

When the electric wire division work is performed, the wire drawing device is used to loosen the wire to make the portion where the division work is performed. Usually, such a wire drawing device is constructed by connecting a wire gripper that holds a wire to both ends of a telescopic shaft that is expandable and contractible. By using such a wire pulling device, the wires are respectively held by the tensioners at both ends, and the telescopic shaft at the center is contracted, so that the wires between the two wire grippers can be loosely bowed. Then, it is possible to cut off the required portion of the stranded wire and easily perform the division work of the electric wire. As such a technique of holding or holding a wire, a linear body holder 100 as shown in Fig. 5 is known (refer to Patent Document 1).

As shown in FIG. 5(a), a fixed side wire clamping portion 102 is integrally formed above the holder body 101. Further, below the holder body 101, the operating member 104 is pivotally supported, and one end of the operating arm 105 is rotatably coupled to the lower end of the operating member 104. A stretching means (not shown) is coupled to the other end of the operating arm 105, and the reciprocating motion of the stretching means is transmitted to the operating member 104 via the operating arm 105.

The movable member wire 103 is axially supported by the operating member 104 so as to be substantially parallel to the fixed side wire clamping portion 102. Thereby, when the operation member 104 is rocked, the movable side wire pulling portion 103 moves forward and backward toward the fixed side wire clamping portion 102, thereby holding the linear body 130.

On the other hand, as is clear from Fig. 5(b), the operation restricting mechanism 106 is provided in order to maintain the state of the grip. The operation restricting mechanism 106 has a screw shaft 108 screwed to the support portion 107, and a guide member 109 that holds the upper end of the screw shaft 108 in a slidingly fitted state. Further, at the upper end of the screw shaft 108, a portion of the self-guide member 109 that protrudes from the guide member 109 is formed with a large diameter portion 110 having an outer diameter larger than the inner diameter of the insertion hole of the guide member 109.

In this way, since the screw shaft 108 can be prevented from falling downward, the gripper body 101 can be pulled toward the operating member 104 side and fixed by locking the screw shaft 108 downward with respect to the support portion 107.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 10-255547

However, in the above-described linear body holder 100, even if the direction in which the interval between the fixed side wire clamping portion 102 and the movable side wire clamping portion 103 is opened is restricted, the restriction cannot be made with respect to the narrowing direction. . Therefore, in order to accommodate the space between the fixed side pinch portion 102 and the movable side pinch portion 103 when the linear body 130 is housed, it is necessary to additionally use another gripper or the like.

Therefore, in the case of performing the work alone, it is necessary to form the above-described separated state with one hand, and support the linear body holder 100 with the other hand, so that both hands are occupied, which is disadvantageous for the work at a high position. Moreover, when the other worker is kept in the separated state and the work is performed together, mutual coordination is required, and accurate work is required to be more familiar. practice.

Therefore, in the present invention, it is an object of the invention to provide a wire gripper which can be locked in a state of being separated between the wire clamping portions when the linear body is housed, and can be easily released without using other tools after being housed. stop.

In order to achieve the above object, the wire gripper of the present invention is connected to an end portion of a telescopic shaft to form a part of the wire pulling device, and transmits tension to the threaded body to be clamped, and is characterized in that it has a fixed side wire clamping portion. The body portion is integrally formed with the main body portion, and is formed with a fitting groove for receiving the upper portion of the linear body; the operating portion is vertically connected to the main body portion; the movable side clamping portion is formed with the receiving line. a fitting groove is formed below the lower portion of the body, and the lower fitting groove is coupled to the operating portion with respect to the upper fitting groove along with the swinging of the operating portion; the operating arm is rotatably coupled to the operating portion at one end thereof The other end is connectable to the telescopic shaft; the guiding portion extends from the body portion to guide the reciprocating movement of the operating arm in the longitudinal direction; and the engaging pair is disposed in pairs on the operating arm side and the body portion The side portion is configured such that the body portion side is detachable from above the operating arm in a state where the upper and lower fitting grooves are separated.

Further, in addition to the above configuration, the engagement device of the present invention is characterized in that the engagement pair includes a claw portion facing downward, a guide portion provided at the main body portion, and a notch formed above the operation arm.

Further, in addition to the above configuration, the wire gripper of the present invention is characterized in that the operating portion in a state in which the fitting grooves are separated from each other is connected to the operating arm as compared with the upper connecting point connected to the main body portion. The lower joint point is located on the side close to the telescopic shaft.

As explained above, according to the present invention, when the body portion is opposite to the operating arm When the square is in the engaged state, the upper and lower fitting grooves are separated to receive the linear body. Further, in a state where the linear body is received between the upper and lower fitting grooves, when the weight of the wire gripper is applied to the upper portion of the linear body, the upper side of the body portion laterally operating the arm is displaced from the engagement centering portion.

Thereby, in a state in which the main body portion is engaged with the operation arm by the engagement pair, the telescopic shaft can be supported only to hold the posture of the gripper, and the holder between the fixed side grip portion and the movable side grip portion can be accommodated. Linear body. Further, in a state where the linear body is housed between the fixed side wire clamping portion and the movable side wire clamping portion, the engagement between the engagement pair can be caused only by applying the weight of the main body portion to the linear body. It is easy to move to a state where it can be clamped.

Further, according to the present invention, the claws are merged into the notches in the sliding region of the operating arm with respect to the guiding portion, and the upper and lower fitting grooves are separated. Further, when the claw portion is separated from the upper side of the notch, the engaged state is easily released.

In this way, the engagement state before the accommodation of the linear body and the release state after the accommodation can be easily switched by a simple configuration.

Further, according to the present invention, in the state in which the engagement grooves are engaged by the engagement pair and the upper and lower fitting grooves are separated from each other, the weight applied to the main body portion of the operation portion is centered on the lower joint point, and the operation portion is oriented Apply force away from the side of the telescopic shaft.

Thereby, when the engagement state of the engagement pair is released, the fixed side wire clamping portion falls downward together with the main body portion and is away from the telescopic shaft, and approaches the movable side wire clamping portion side, so that the movement can be automatically moved to the clamp Line status.

1‧‧‧Wire drawing device

2‧‧‧Clamping device

4‧‧‧ Telescopic shaft

6‧‧‧ Body Department

8, 102‧‧‧ Fixed side clamping line

8a‧‧‧Upper fitting groove

10‧‧‧Action Department

12, 103‧‧‧ movable side clamping line

12a‧‧‧ under the fitting groove

14, 105‧‧‧ operating arm

14a‧‧‧Locking groove (notch)

16‧‧‧ Guidance Department

16a‧‧‧Connected components

18‧‧‧Locking section (engagement pair)

20‧‧‧ Guide side engagement

20a‧‧‧ claws

21, 28‧‧‧ bolts

22‧‧‧Bolts (top connection point)

23‧‧‧Bolts (movable side clamping line fulcrum)

24‧‧‧ bolts (link below)

26‧‧‧Rotation Restriction

26a‧‧‧Restricted protrusion

30‧‧‧Wire (linear body)

100‧‧‧Line body holder

101‧‧‧Handheld body

104‧‧‧Action components

106‧‧‧Action Restriction Agency

107‧‧‧Support

108‧‧‧ Screw shaft

109‧‧‧Guide members

130‧‧‧Linear body

Fig. 1 is a perspective view of a thread clamp of an embodiment of the present invention.

Fig. 2 is a side elevational view showing the vicinity of the engaging portion of the thread clamp of Fig. 1.

Figure 3 is an explanatory view of the operation of the wire clamp of Figure 1, (a) is a diagram showing the state of the lock, (b) The figure shows a state in which the lock is released by the mounting of the electric wire, (c) shows a state in which the main body portion is rotated to the position where the electric wire is clamped, and (d) shows the state through the telescopic shaft. A diagram of a state in which the contracted wire is tensioned.

Fig. 4 is a view showing the operation of the operation arm around the joint portion between the telescopic shaft and the operation arm.

Fig. 5 is a conventional wire drawing device, (a) is a view seen from the front side, and (b) is a view seen from the back side.

Hereinafter, embodiments of the present invention will be described using the drawings.

Fig. 1 is a perspective view showing the entire thread clamp of an embodiment of the present invention. In Fig. 1, the end portion of the telescopic shaft 4 constituting the wire drawing device 1 and the entire wire gripper 2 connected thereto are shown. The configuration of the gripper 2 is mainly described. On the upper side surface of the main body portion 6 of the gripper 2, a fitting groove (upper fitting groove) 8a in which the upper portion of the electric wire 30 can be accommodated is integrally provided. The side clamping portion 8 is fixed.

Further, below the main body portion 6, the operation portion 10 is slidably coupled by bolts 22 (upper connection points). Further, below the fixed side wire clamping portion 8, a movable side wire clamping portion 12 in which an upward fitting groove (lower fitting groove) 12a is formed is disposed so as to face the fitting groove 8a. The movable side wire clamping portion 12 is rotatably attached to the operating portion 10 by a bolt 23 .

According to this configuration, the movable side wire clamping portion 12 moves up and down in conjunction with the rocking operation portion 10, and the fitting groove 12a moves forward and backward with respect to the fitting groove 8a.

Further, one end of the operating arm 14 is rotatably coupled to the lower side of the operating portion 10 by a bolt 24 (lower connecting point). The other end side of the operating arm 14 is rotatably coupled to the end of the telescopic shaft 4, and the reciprocating motion along the longitudinal direction of the telescopic shaft 4 is It is transmitted to the operating unit 10 by the operating arm 14.

On the other hand, in the main body portion 6, the side close to the telescopic shaft 4 extends downward, and the lower end thereof is divided into two to form the guide portion 16. The lower end side of the guide portion 16 divided into two is formed by being connected by the connecting member 16a, and the operation arm 14 is inserted and inserted in the space in a sliding fit state.

Since it is configured in this manner, when the telescopic shaft 4 reciprocates in the longitudinal direction, the operation arm 14 relatively moves in sliding contact with the guide portion 16 as a fulcrum.

Here, in the thread clamp 2 of the present embodiment, the lock portion 18 (engagement pair) is provided so as to lock the operation arm 14 with respect to the guide portion 16. Next, the structure of the lock portion 18 will be described with reference to Fig. 2 .

In Fig. 2, a portion of the guide portion 16 and the operating arm 14 is viewed from the side. Further, for convenience of explanation, the guide portion 16 is shown in partial cross section so that the shape of the operating arm 14 can be easily understood.

2, the locking portion 18 includes: a locking groove 14a that opens to the upper side of the operating arm 14; and a guiding side engaging portion 20 that is engageable from above with respect to the locking groove 14a. The claw portion 20a is formed by bending. In the present embodiment, the guide-side engagement portion 20 is configured by a member different from the guide portion 16, and is fastened and fixed by the bolt 21.

Further, as shown in FIG. 2, in the guide portion 16, a clearance gap at least larger than the engagement depth of the claw portion 20a with respect to the lock groove 14a is provided with respect to the operation arm 14. Therefore, when the main body portion 6 is lifted upward with respect to the operation arm 14, the claw portion 20a and the guide portion 16 are lifted together and detached from the lock groove 14a, thereby releasing the lock state of the lock portion 18.

2, the lock state of the lock portion 18 is shown. However, at this time, the weight close to the side of the telescopic shaft 4 of the main body portion 6 is applied to the operation arm 14, and further, the operation arm 14 is The weight is applied to the rotation restricting portion 26 that is pivotally supported by the bolt 28 with respect to the telescopic shaft 4 and the operating arm 14. As can be seen from Fig. 1, the rotation restricting portion 26 is formed as a section Font, again, according to Figure 2, The bottom of the font supports the lower surface of the operating arm 14 by a limiting projection 26a extending distally from the telescopic shaft 4.

Next, the setting operation of the wire gripper 2 to the electric wire 30 will be described using FIG. 3 shows the sequence in which the wire gripper 2 is provided to the electric wire 30, and the electric wire 30 held by the wire gripper 2 is pulled by the contraction of the telescopic shaft 4.

In the state shown in FIG. 3(a), the fitting groove 8a of the fixed side wire clamping portion 8 of the main body portion 6 is placed on the upper portion of the electric wire 30. When the fixed side wire clamping portion 8 of the wire gripper 2 is placed on the electric wire 30, first, it is necessary to enlarge the interval between the fixed side wire clamping portion 8 and the movable side wire clamping portion 12 to be larger than the outer diameter of the electric wire 30.

However, the main body portion 6 is supported by the swingable operation portion 10, and the bolt on the lower side of the operation portion 10 is in a state where the interval between the fixed side wire clamping portion 8 and the movable side wire clamping portion 12 is enlarged. At the position of 24, the position of the bolt 22 is disposed on the side slightly above the telescopic shaft 4 from the vertical. Therefore, if the main body portion 6 is not supported by the operation portion 10, the operation portion 10 is lowered while rotating in the direction away from the telescopic shaft 4 due to its own weight, so that the fixed side wire clamping portion 8 and the movable side are closed. Between the clamping portions 12.

Therefore, in the wire gripper 2 of the present embodiment, in order to maintain the space between the fitting groove 8a of the fixed side wire clamping portion 8 and the fitting groove 12a of the movable side wire clamping portion 12 so as to accommodate the electric wires 30, It is equipped with a locking portion 18. As can be seen from Fig. 3(a), the claw portion 20a is engaged with the lock groove 14a from above to form a locked state, and the fitting grooves 8a and 12a are appropriately spaced from each other.

Therefore, as described with reference to FIG. 2, the weight of the gripper 2 is supported by the rotation restricting portion 26 in the locked state, so that the operator can hold only the telescopic shaft 4 The state places the fixed side wire clamping portion 8 of the wire gripper 2 on the upper portion of the electric wire 30.

As described above, when the fixed side wire clamping portion 8 is placed on the electric wire 30, the weight of the main body portion 6 is removed from the operating arm 14, so that the claw portion 20a is disengaged from the locking groove 14a, and the lock is released. The state at this time is shown in Fig. 3(b). Then, when the telescopic shaft 4 is lifted from the state of FIG. 3(b), the claw portion 20a of the disengagement groove 14a slides in contact with the operation arm 14 in a direction away from the telescopic shaft 4.

Thereby, the operation unit 10 is rotated to the right side of the paper surface of FIG. 3(b), the movable side wire clamping portion 12 is raised, and the fixed side wire clamping portion 8 is lowered, so that the fitting grooves 8a and 12a of the two are automatically closed to each other. The direction changes direction, and the above rotation proceeds until the electric wire 30 is clamped. The state at this time is shown in Fig. 3(c).

However, in this state, the fixed side wire clamping portion 8 and the movable side wire clamping portion 12 only abut against the upper and lower portions of the electric wire 30, respectively, and the electric wire 30 has not been sufficiently clamped.

Then, as shown in FIG. 3(d), when the telescopic shaft 4 is contracted, the operation arm 14 is pulled to rotate the operation portion 10, so that the clamp is generated by the fixed side wire clamping portion 8 and the movable side wire clamping portion 12. Increased holding power.

In the actual design, when the guiding portion 16 slides on the operating arm 14, the side of the fixed side clamping portion 8 and the movable side clamping portion 12 close to the telescopic shaft 4 is fitted to the operating arm slightly upward. At the curvature of 14, the electric wire 30 of the both ends of the telescopic shaft 4 held by the gripper 2 can be retracted in a slack shape. Then, the electric wire 30 is held in a state of being bent slightly upward, so that the gripping force can be effectively exerted on the electric wire 30, and the tight line state can be stably maintained.

As described above, in the thread clamp 2 of the present embodiment, the electric wire 30 is housed between the fixed side wire clamping portion 8 and the movable side wire clamping portion 12, and the telescopic shaft 4 is contracted, thereby relaxing the electric wire 30. The work up to this can be done only by the operation of the telescopic shaft 4, so The work efficiency can be improved.

For example, when an electric wire installed at a high place is operated at a position where it is difficult to stand, the hand-held tool can be suppressed to a minimum, and therefore work can be performed stably, thereby contributing to prevention of an accident.

Next, a structure in which the operation arm 14 is coupled to the telescopic shaft 4 will be described with reference to Fig. 4 . As described above, the rotation restricting portion 26 is provided at a position where the operation arm 14 and the telescopic shaft 4 are coupled. Thereby, the fixed side wire clamping portion 8 and the movable side wire clamping portion 12 in the locked state can restrict the downward rotation of the operation arm 14 so as to maintain a substantially horizontal angle, thereby making the setting of the electric wire 30 easily.

In Fig. 4, the periphery of the portion where the telescopic shaft 4 is coupled to the operating arm 14 is enlarged and viewed from the side. Here, for convenience of explanation, a part of the front side of the guide portion 16 and the lock portion 18 is cut away. Further, in Fig. 4, two states of the operating arm 14 are indicated by solid lines and imaginary lines.

The operation arm 14 indicated by the solid line indicates that the side of the telescopic shaft 4 is supported by the operator, and the weight of the gripper 2 is applied to the restriction protrusion 26a via the operation arm 14. Further, the operation arm 14 indicated by the imaginary line indicates that the fixed side wire clamping portion 8 of the main body portion 6 is placed on the upper portion of the electric wire 30, and the telescopic shaft 4 is relatively lowered downward.

Thus, since the rotation restricting portion 26 is formed as a section The font is opened upward, so that the operating arm 14 can be rotated upward more than the position of the restricting projection 26a extending from the bottom surface of the rotation restricting portion 26.

That is, by using the rotation restricting portion 26 of a simple configuration, the coupling angle of the operating arm 14 can be flexibly changed according to the telescopic movement of the telescopic shaft 4, and not only when the gripper 2 is placed on the electric wire 30 When the fixed side wire clamping portion 8 needs to be held in a fixed horizontal posture, the posture of the wire gripper 2 can be fixed in a stable state.

Further, although the gripper 2 has been described above using FIGS. 1 to 4, the present invention is not limited to the above configuration.

Specifically, in the above-described embodiment, the lock portion 18 includes the lock groove 14a formed above the operation arm 14 and the claw portion 20a provided on the guide side engagement portion 20 of the guide portion 16. example.

However, not limited to this example, the engaging portion may be configured to be detachable in the up-and-down direction. For example, the protrusion may be formed upward from the operating arm, and may be directed downward toward the guiding portion so as to receive the protrusion. A recess such as a groove is formed.

In this way, even if the locking portion 18 is formed, when the fixed side wire clamping portion 8 of the main body portion 6 is placed on the electric wire 30, it can be detached in the vertical direction, so that the locking can be released, and the same effect as that of the above embodiment can be obtained. .

Further, in the above-described embodiment, the position of the bolt 22 that connects the upper end side of the operating portion 10 to the main body portion 6 in the locked state is a position closer to the bolt 24 that connects the lower end side to the operating arm 14. Located on the outside of the telescopic shaft 4.

However, the pivotal support position (bolt 22) with respect to the main body portion 6 of the operating portion 10 in the locked state need not be disposed in the direction of the telescopic shaft 4 with respect to the pivotal support position (bolt 24) of the operating arm 14 of the operating portion 10. Outside.

For example, even if the bolt 22 is disposed closer to the side of the telescopic shaft 4 than the bolt 24, the lock releasing operation when the main body portion 6 is placed on the electric wire 30 is not hindered, and the lock is automatically released simultaneously with the mounting. .

Further, even if the guide portion 16 does not automatically slide down the lower side of the operation arm 14, the operation portion 10 and the main body portion 6 can be rotated toward the side of the clamp electric wire 30 by pulling the telescopic shaft 4. In this way, the operation can be completed by operating only the telescopic shaft 4.

(industrial availability)

The wire gripper of the present invention can be easily attached to the linear body to be clamped without using a gripping tool, and can be used, for example, in addition to an annealing line for guiding the scaffolding at a work site or the like. The holding of a cable such as a steel strand used in an electric power device is particularly useful for the clamping of an electric wire which is preferably provided in a non-direct contact in order to prevent electric shock or the like.

1‧‧‧Wire drawing device

2‧‧‧Clamping device

4‧‧‧ Telescopic shaft

6‧‧‧ Body Department

8‧‧‧Fixed side clamping line

8a‧‧‧Upper fitting groove

10‧‧‧Action Department

12‧‧‧ movable side clamping line

12a‧‧‧ under the fitting groove

14‧‧‧Operating arm

16‧‧‧ Guidance Department

16a‧‧‧Connected components

18‧‧‧Locking section (engagement pair)

20‧‧‧ Guide side engagement

22‧‧‧Bolts (top connection point)

23‧‧‧Bolts (movable side clamping line fulcrum)

24‧‧‧ bolts (link below)

26‧‧‧Rotation Restriction

28‧‧‧ bolts

30‧‧‧Wire (linear body)

Claims (3)

A wire gripper that is coupled to an end portion of a telescopic shaft to form a part of a wire pulling device, and transmits tension to the clamped linear body, and is characterized in that: a fixed side wire clamping portion is provided, and the body portion is disposed An integral portion is formed with a fitting groove for receiving the upper portion of the linear body; an operating portion is vertically coupled to the main body portion; and a movable side clamping portion is formed to receive the linear body a lower fitting groove, wherein the lower fitting groove is coupled to the operation portion so as to be movable forward and backward with respect to the upper fitting groove, and the operation arm is rotatably coupled to the operation portion The other end is connectable to the telescopic shaft; the guiding portion extends from the main body portion and guides the reciprocating movement of the operating arm in the longitudinal direction; and the engaging pair is disposed in pairs The operation arm side and the main body portion side are detachable from the upper side of the operation arm in a state in which the upper and lower fitting grooves are separated, and the relative front and rear directions in the engaged state can be restricted. The movable manner, and is constituted by a protrusion groove. The yarn gripper of claim 1, wherein the engagement pair includes: a downwardly facing claw portion provided at the guide portion of the main body portion; and a notch formed above the operation arm. The tensioner according to claim 1 or 2, wherein the operation portion in a state in which the upper and lower fitting grooves are apart from each other is compared with the upper connection point connected to the main body portion Operating arm The lower joint point is located on the side close to the above-mentioned telescopic shaft.