JPH0240080Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a temporary support arm device for supporting overhead electric wires or arms to which electric wires are attached in electrical work.

(2) Prior Art A device for supporting electric wires by providing a spacer pole at the tip of a boom is conventionally known as described in, for example, Japanese Patent Laid-Open No. 57-132708.

(3) Problems to be solved by the invention However, since the conventional spacer pole device was adjustable only in the angle of inclination, there were problems in that the range of use was limited and the operability was poor.

(4) Means for solving the problems In order to solve the above problems, the present invention uses a base frame pivotably supported at the tip of the boom, and a rotating device attached to the bottom end of the base frame. an inner frame provided on the inner periphery of the base frame and whose lower end is attached to the rotating part of the rotating device; and an inner frame provided between the base frame and the inner frame and fitted to the base frame so as to be rotatable and slidable. A first movable frame is provided within the first movable frame and is slidable relative to the inner frame and is fitted to rotate integrally with the inner frame. a second movable frame that is freely movable and is fitted to rotate integrally with the first movable frame;
The movable frame is provided with a telescoping device provided between the movable frames, and a temporary arm mounted on the same side of the first movable frame and the second movable frame, respectively.

(5) Effect With the above configuration, the base frame at the tip of the boom is swung, the first moving frame and the second moving frame are rotated and slid in the vertical direction, and the first moving frame and the second moving frame are moved, respectively. Adjust the positional direction and interval of the attached support device such as a temporary arm, support the electric wire or arm, and move the supporting position of the electric wire, etc.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

Figure 2 shows a work vehicle for temporarily supporting electric wires, with a turntable 3 mounted on a vehicle body 1 supported by outriggers 2.
The base end of a telescoping boom 4 is pivotally supported on the turntable 3, and the telescoping boom 4 is extended and contracted by a built-in telescoping device (not shown).
It is raised and lowered by a hoisting cylinder 5, and a support leg 6 of the telescoping boom 4 is attached to the tip of the base boom of the telescoping boom 4 so as to be swingable by a swinging cylinder 7, and a temporary arm 10 is attached to the top of the tip of the telescoping boom 4. The temporary support arm device 8 is pivotally supported, and the temporary support arm device 8 swings in a vertical plane by a swing cylinder 9.

As shown in FIG. 1, the temporary support arm device 8 includes:
A rotating device 14 is housed and attached to the lower end of a cylindrical base frame 11 that is pivotally supported at the tip of the telescopic boom 4, and the rotating part of the rotating device 14 is housed in the base frame 11 in parallel with the base frame 11. The first movable frame 12 is connected to the lower end of an inner frame 13 having a rectangular cross section, and a first movable frame 12 having a rectangular cross section is fitted into the space between the base frame 11 and the inner frame 13. The inner frame 13 is fitted into the frame 11 so as to be rotatable and slidable in the axial direction.
Although it slides in the axial direction against the inner frame 1
A second moving frame 15 having a rectangular cross section is fitted into the first moving frame 12 so as to rotate integrally with the first moving frame 12. Although it slides, it is fitted so as to rotate integrally with the first moving frame 12, and both ends of a hydraulic cylinder 16, which is a telescopic device, are attached to the inner periphery of the inner frame 13 and the inner periphery of the first moving frame 12. Both ends of a hydraulic cylinder 17, which is a telescopic device, are pivotally connected to the inner periphery of the first moving frame 12 and the second moving frame 15, respectively. Temporary supports 18 and 19, such as temporary braces, are attached to the same side surfaces of 15, respectively.

With the above configuration, when performing temporary wire support work, as shown in FIG. By extending and contracting the cylinder 9 to move the temporary support arm device 8 to a vertical state, and then driving the rotating device 14 shown in FIG.
The first moving frame 12 together with the inner frame 13
and the second moving frame 15 rotates to move the temporary arm 1
The first moving frame 12 and the second moving frame 15 are rotated and the hydraulic cylinders 16 and 17, which are expansion and contraction devices, are expanded and contracted.
slide up and down, respectively, and raise and lower the temporary arm 10 in the vertical direction.
The wires are supported by the temporary braces 10 by selecting the position, direction, and vertical spacing of the wires.

(7) Effects of the invention As described above, according to the invention, the temporary supports can be rotated and raised and lowered with a simple and lightweight structure, and the spacing between the temporary supports can be set arbitrarily. Since a temporary support arm device is provided, the present invention is effective in improving the work efficiency and safety of temporary support work for electric wires or cross arms.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view showing the structure of a temporary support arm device, and FIG. 2 is a side view of a temporary electric wire support work vehicle. 4...Telescopic boom, 8...Temporary support arm device,
9... Swing cylinder, 11... Base frame,
12... First moving frame, 13... Inner frame, 14... Rotating device, 15... Second moving frame, 16, 17... Hydraulic cylinder, 18, 19
...temporary support.

Claims (1)

[Scope of utility model registration request] A base frame pivotably supported at the tip of the boom, a rotating device attached to the lower end of the base frame, and an inner frame provided on the inner periphery of the base frame with its lower end attached to the rotating part of the rotating device. , is provided between the base frame and the inner frame, and is fitted to the base frame so that it can rotate and slide freely, and fitted to the inner frame so that it can only slide freely and rotates integrally with the inner frame. a first moving frame, a second moving frame provided within the first moving frame, slidable only with respect to the first moving frame, and fitted to rotate integrally with the first moving frame; and an inner frame. and a telescoping device provided between the first moving frame and the first moving frame and between the first moving frame and the second moving frame, and a support device respectively attached to the same side of the first moving frame and the second moving frame. A temporary support arm device featuring: