JPH06153354A - Wire gripper - Google Patents

Abstract

PURPOSE:To facilitate manipulator operation of wire gripper at the time of wire stretching work. CONSTITUTION:The wire gripper comprises a slider 23 arranged slidingly along longitudinal direction on one side of a supporting member 21 having one end 21a to be coupled with a wire stretcher, a pair of cable clamping members 30, 30' arranged on the other side of the supporting member, and a pair of link mechanisms 24, 24' for linking the other end 21b of the supporting member, the slider, and each clamping member such that each clamping member is opened when the slider slides to one end 21a side whereas it is closed when the slider slides to the other 21b side. The wire gripper further comprises a spring 25 stretched between the other end of the supporting member and the slider and imparting tensile force in the closing direction of the clamping member to the slider, and a pair of grip members 40, 40' secured oppositely to one end of the supporting member and the slider and slide the slider in the direction for opening the clamping members when the grip members 40, 40' are gripped by the grip part of a manipulator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire gripper for gripping an electric wire, cable or the like when performing a wire tensioning operation for the electric wire, cable or the like.

[0002]

2. Description of the Related Art In the work of straddling a cable or electric wire to a power pole, for example, in the work of stretching an SS cable (self-supporting cable) 3 on the power pole 1 as shown in FIG. The wire 4 is firmly held by the wire gripper 7 connected to the wire tensioner 5, the lever 6 of the wire tensioner 5 is operated to pull the SS cable 3, and the support wire 4 is attached to the cable fixing bracket 2 of the telephone pole 1. The terminal 4a is fixed.

In recent years, from the viewpoints of work safety, improvement of working environment, labor shortage, etc., there has been proposed an intervention work using a remote manipulator. As a remote cable operation vehicle, for example, as shown in FIG. 2, a moving vehicle 10 is equipped with a manipulator 11, a manipulator supporting arm 12, a cable feeding / winding device 13, a cabin 14, a visual camera 15, and the like. Drum moving type manipulator cable straddle vehicle (Japanese Patent Laid-Open No. 3-1030)
16). As the manipulator 11, as shown in FIG. 3, a multi-degree-of-freedom manipulator having grip portions 11a and 11b at its tip is used.

[0004]

The wire gripper 7 is constructed on the premise that the operator manually operates, that is, the operator manually operates to hold the support wire 4 therebetween, as shown in FIG. Even with a manipulator 11 having such multiple degrees of freedom as described above, it is not dexterous like a human being, and it is difficult to operate the gripper with the grip portions 11a and 11b to hold the support wire 4.
There is a problem of poor workability.

The present invention has been made in view of the above points, and an object of the present invention is to provide a wire gripper capable of easily holding an electric wire or the like by a grip portion of a remote control manipulator.

[0006]

In order to achieve the above object, according to the present invention, one end of which is slidably disposed along one side of a support member connected to a tensioner. A slider, a pair of holding members arranged on the other side of the support member for holding a cable or the like, the other end of the support member, the slider and each of the holding members, and the slider is connected to one end side of the support member. And a pair of link mechanisms that open each of the holding members when sliding on the other side and close when sliding on the other end side, and are stretched between the other end of the supporting member and the slider, and hold the slider by the holding mechanism. A spring that applies a pulling force in the direction in which the member is closed, and one end of the support member and the slider are fixed so as to face each other, and the slider slides in the direction in which the grip portion opens when gripped by the grip portion of the manipulator. Move Is obtained by a structure in which a pair of gripping members.

[0007]

When the grip member of the wire gripper is gripped by the one grip portion of the manipulator, the slider slides toward the one end side of the support member against the spring force of the spring, and accordingly, each link mechanism causes each holding member. Open to allow holding of electric wires etc. When the electric wire or the like gripped by the other grip portion of the manipulator is sandwiched between the open holding members and then the grip by the one grip portion is released, the slider slides to the other end side by the spring force of the spring. Along with this, each link mechanism closes each holding member and holds the electric wire or the like.
This facilitates the operation of the grabber with the manipulator.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. As shown in FIGS. 4 to 6, the wire gripper 20 includes a support member 21 in which front and rear ends 21a and 21b are spread laterally in a wing shape, and is arranged below the support portion 21 along the longitudinal direction. A holding part 22 for holding an electric wire, and a support member 2
1, a slider 23 disposed on the first member, a pair of left and right link mechanisms 24 and 24 'connecting the support member 21, the holding portion 22, and the slider 23, and a coil stretched between the support member 21 and the slider 23. The spring 25, the support member 21, and the slider 23 are provided with a grip portion 26 and the like that are gripped by a grip portion of the manipulator and open the gripping portion 22. A hook 27 for connecting the support member 21 to a wire tensioner (not shown) is attached to the front end 21a of the support member 21.

As shown in FIG. 6, the gripping portion 22 is composed of a pair of left and right gripping members 30 and 30 '.
Reference numerals 0 and 30 'denote end faces 30a and 3a, which face each other and are plate members each having a substantially trapezoidal shape in plan view in which both front and rear ends are cut off in a tapered shape.
The wire 0'a can hold the electric wire for a predetermined length.
The slider 23 is slidably mounted in the longitudinal direction in the approximate center of the support member 21, and has a central portion 23a and left and right ends 23b, 2 and 2.
3c has a shape that extends forward, and both left and right sides project outward from the central portion 21c of the support member 21.

The link mechanism 24 on one side includes links 32, 3
3, 34 (FIG. 6). Link 32
Is rotatably connected to the rear left side of the lower surface of the slider 23, the base end thereof is rotatably connected to the center of the lower surface of the holding member 30, and the front end thereof is rotatably connected to the lower surface of the front end of the link 33. The lower end of the rear end 21b of the support member 21 is rotatably connected to the lower surface. The link 34 has a front end rotatably connected to a lower surface front portion of the holding member 30 and a rear end rotatably connected to a lower surface of a front end 23b of the slider 23. The links 32 and 34 are parallel links.

The link mechanism 24 'on the other side is also the link mechanism 24.
Is composed of links 32'-34 ',
The right side of the rear end 21b of the holding member 21, the right side of the slider 23, and the holding member 30 'are connected. These link mechanisms 24 and 24 'open and close the holding members 30 and 30' in parallel according to the movement of the slider 23 in the front-rear direction. Pins 35 and 36 are planted so as to oppose each other in the approximate center of the upper surface of the rear end 21b of the support member 21 and in the center of the rear part of the upper surface of the slider 23. Both ends are locked. The coil spring 25 is a return spring for pulling back the slider 23 rearward after the gripping force of the manipulator is released as described later.

The grip portion 26 is composed of a pair of grip members 40, 40 'as shown in FIGS. One of the gripping members 40 is vertically fixed to the upper surface of the front end 21a of the supporting member 21, and a positioning beam 41 is horizontally fixed in the width direction at the substantially center of the front surface, and the left and right sides of the rear surface and the front end 21a.
Brackets 42, 42 (FIG. 7) for reinforcement are vertically fixed between the upper surface and the upper surface. Further, as shown in FIG. 7, a notch 40a through which the central portion 23a of the slider 23 can be inserted is provided in the lower center of the grip member 40.

The other gripping member 40 'is vertically fixed to the upper surface of the slider 23 so as to face the gripping member 40, and a positioning beam 44 is horizontally fixed in the width direction substantially at the center of the rear surface.
A stopper and a reinforcing bracket 45 are vertically fixed between the center of the front surface and the upper surface of the central portion 23a of the slider 23. The upper ends of the gripping members 40, 40 'are slightly bent obliquely upward so as to be separated from each other to form locking claws, and the grip portion of the manipulator is provided with these upper ends and the beams 41, 44. Gripping members 40, 4 between
It can be gripped without deviating from 0 '.

The operation will be described below. 4 to 6 show a non-use state of the wire harness 20, the slider 23 is pulled rearward by the spring force of the coil spring 25, and the holding portion 22 has left and right holding members 30 and 30 'linked to each other. It is closed by the mechanism 24, 24 'and the grip 26 is open.

Now, the operator operates the manipulator to grip the grip plates 40 and 40 'of the grip portion 26 by the grip portion 11a of the manipulator as shown by the chain double-dashed line in FIG. When you close it like
When the slider 23 slides forward on the support member 21 against the spring force of the coil spring 25 from the closed position of the chain double-dashed line, and the front end of the bracket 45 contacts the rear surface of the gripping member 40, the slider 23 stops at that position. To do. Further, the central portion 23a freely penetrates the hole 40a (FIG. 7) in the lower portion of the grip member 40 and projects forward.

When the slider 23 slides forward on the support member 21, the left and right link mechanisms 2 are accordingly moved as shown in FIG.
The links 32 to 34 and 32 ′ to 34 ′ of 4, 24 ′ rotate respectively to move the holding members 30, 30 ′ forward and to move in parallel to the left and right to open the holding portion 22. In this state, the operator releases the gripping force of the grip portion 11a by inserting, for example, the support wire 4 of the SS cable gripped by another grip portion (not shown) of the manipulator between the holding members 30 and 30 '. To do.

When the gripping force of the gripping portion 26 is released, the slider 23 is pulled rearward by the spring force of the coil spring 25, and the link mechanisms 24 and 24 'support the closing members 30 and 30' by closing them. Hold line 3. When the holding portion 22 holds the support wire 4 and then receives a tensile force F in the direction of the arrow in FIG. 9 by the support wire 4, the holding portion 22 acts to hold the support wire 4 more firmly. Therefore, the coil spring 25 only needs to have a spring force that pulls back the slider 23 when the grip portion 26 releases the grip force of the grip portion 11a.

[0018]

As described above, according to the present invention, the slider, one end of which is connected to the tensioner, is provided slidably along the longitudinal direction on one side of the support member, and the support member. When a pair of holding members arranged on the other side for holding a cable or the like, the other end of the supporting member, the slider and the respective holding members are connected, and the slider slides to one end side of the supporting member. A pair of link mechanisms that open each of the holding members and close when sliding to the other end side, and a tension in a direction in which the holding members are stretched between the other end of the support member and the slider, in a direction in which the holding member is closed. A spring that applies force,
One end of the support member is fixed to the slider and the slider is provided with a pair of gripping members that are slid in the direction in which the gripping portion opens when gripped by the grip portion of the manipulator. Therefore, it is easy to operate the wire gripper by the manipulator, the burden on the operator who operates the manipulator is significantly reduced, and the efficiency of wire drawing work is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a wire drawing work when a cable is crossed.

FIG. 2 is a side view of a drum moving type manipulator cable straddling vehicle.

FIG. 3 is a perspective view of a manipulator of the cable spanning vehicle of FIG.

FIG. 4 is a side view showing an embodiment of the wire gripper according to the present invention.

5 is a plan view of the grabber of FIG. 4. FIG.

6 is a bottom view of the grabber of FIG. 4.

7 is an end view of one side gripping member of the gripping portion of the wire gripper of FIG. 2. FIG.

FIG. 8 is a side view showing a state in which the grip portion of the wire gripper of FIG. 4 is gripped by a manipulator.

FIG. 9 is a bottom view of FIG.

[Explanation of symbols]

 20 gripping device 21 support member 22 holding part 23 slider 24, 24 'link mechanism 25 coil spring 26 holding part 30, 30' holding member 40, 40 'holding member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Minoru Shiragata 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A slider, one end of which is connected to a wire tensioner, is slidably disposed on one side of a support member along a longitudinal direction, and a slider is disposed on the other side of the support member to hold a cable or the like. A pair of gripping members, the other end of the support member, the slider and each of the gripping members are connected to each other, and when the slider slides to one end of the support member, the gripping members are opened.
A pair of link mechanisms that close when sliding to the other end side, a spring that is stretched between the other end of the support member and the slider, and that applies a tensile force in the closing direction of the holding member to the slider, One end of the support member and the slider, respectively, are fixed so as to face each other, and a pair of gripping members for sliding the slider in a direction in which the gripping portion opens when gripped by the grip portion of the manipulator are provided. A wire gripper.