JPH026063Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lifting machine suitable for lifting heavy objects, such as power distribution lines, to linear objects stretched horizontally at high places.

(Prior Art) Conventionally, when lifting a heavy object such as a power distribution line to a linear object that is stretched horizontally at a high place, an aerial work vehicle is used.

(Problem to be solved by the invention) Therefore, regardless of the weight and size of the heavy object to be lifted, the work becomes large-scale and requires manpower and time, which poses problems in terms of workability and economy. Was.

The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide a lifting machine that can easily lift heavy objects, even linear objects.

(Means for Solving the Problems) In order to achieve the above object, the lifting machine according to the present invention has the following features: a lifting rod formed with an appropriate length, and a support provided at one end of the lifting rod. The present invention is characterized in that it includes a pulley rotatably supported, a hook provided on the support body facing the lifting rod, and a lifting rod formed to have an appropriate length.

(Function) In the lifting machine according to the present invention, by locking the hook to the linear object using the lifting rod, the lifting machine is held at a desired position of the linear object, and in this state, the pulley is used. The heavy object is lifted to the position where the linear object is placed.

EMBODIMENT OF THE INVENTION (Embodiment) Hereinafter, a first embodiment of a lifting machine according to the present invention will be described based on the drawings.

In FIG. 1, a lifting machine 1 is a linear object 2
A lifting rod 3 formed to an appropriate length in consideration of the installation height of a power line (for example, a power distribution line), and a pulley 7 rotatably supported by a support 5 provided at one end of the lifting rod 3. , a hook 9 provided on the support 5
It has

The hook 9 is opposed to the lifting rod 3, and its bent portion 9A is on the same plane as the rotating surface of the pulley 7.

Therefore, when the hook 9 is locked to the linear object 2, the rotation plane of the pulley 7 is perpendicular to the longitudinal direction of the linear object 2, so the hook 9 is displaced in the longitudinal direction of the linear object 2. This ensures that the lifting machine 1 is held at a desired position above the linear object 2.

Further, the support body 5 is formed into an elliptical ring shape having a long axis larger than the diameter of the pulley 7, and the pulley 7 is loosely inserted into the support body 5 with its radial direction coinciding with the long axis direction of the support body 5. There is. A rotation shaft 7A, which extends along the short axis direction of the support body 5 and whose both ends are rotatably supported by the support body 5, is fixed to the rotation center on both sides of the pulley 7. .

Therefore, the pulley 7 can rotate within the support body 5 around the rotation axis 7A.

The lifting rod 3 only needs to have strength enough to withstand the total weight of the pulley 7, the hook 9, and the string 6, which will be described later, and can therefore be made of a relatively lightweight material.

Therefore, it is possible to reduce the weight of the lifting machine 1, and even if the lifting rod 3 is formed to be quite long, its weight does not increase so much, so that it can suitably correspond to the height of each linear object 2. .

When lifting a heavy object 4 (for example, a machine that works on power distribution lines) with the lifting machine 1 configured as described above, first, the hook 9 is locked to the linear object 2 using the lifting rod 3, The lifting machine 1 is held at a desired position above the linear object 9.

In this state, the other end 6B of the string 6, which is suspended on the pulley 7 and has the heavy object 4 attached to one end 6A, is wound up.

As a result, the heavy object 4 is lifted to the position where the linear object 2 is placed.

Note that by fixing the other end 6B of the wound cord 6 so that it is not unwound, the heavy object 4 can be held in a lifted state.

As explained above, in this embodiment, the lifting rod 3 is used to lock the hook 9 to the linear object 2, so that the lifting machine 1 is held at a desired position on the linear object 9, and the string By winding up the end 6B of 6, the heavy object 4 is lifted to the position where the linear object 9 is placed.

Therefore, the work of lifting the heavy object 4 to the position where the linear object 9 is disposed can be easily carried out by one person, resulting in extremely excellent workability and economy.

Next, a second embodiment of the lifting machine according to the present invention will be described based on the drawings.

In the lifting machine 1 shown in FIG. 2, the support 5 is formed into a triangular plate shape, and one vertex of the support 5 is fixed to one end of the lifting rod 3.

In addition, pulleys 7,
7 are each rotatably attached.

As can be seen from FIG. 2, each pulley 7 is therefore located on a line spaced a distance H from the longitudinal centerline of the lifting rod 3.

Therefore, the notch portion 4C, which will be described later, can be made smaller, and the robot 4 can be easily held parallel to the electric wire 2 when lifting the robot 4 (described later).

Further, a hook 9 is provided at the center of the edge connecting the two vertices of the support 5.

Note that the lower end of the lifting rod 3 is supported by the stand 8, so that there is no inconvenience such as the lifting rod 3 swinging laterally, and the work can be performed safely and efficiently.

Furthermore, a guide wheel 8A is provided on the upper part of the stand 8 to guide the string 6 to an electric reel 10, which will be described later.

Next, the lifting machine 1 configured as above
Now, for example, a case will be explained in which a robot (heavy object) 4 that works on a power distribution line is attached to a power distribution line (linear object) 2.

The robot 4 is configured to be able to retrieve a kite caught on the power distribution line 2 by means of a cylindrical blade 4B (the upper part of which is partially cut out) provided in front of the robot 4. has two running wheels 4A,
It has 4A.

By rotating the running wheels 4A on the distribution line 2 by a motor (not shown), the robot 4 is suspended from the distribution line 2.
It can be moved along the distribution line 2.

Further, as understood from FIGS. 2 and 3, both running wheels 4A are capable of reciprocating between a position on the center of gravity G of the robot 4 and a position spaced apart from the center of gravity G. There is.

Furthermore, a notch 4C is provided at the rear of the robot 4.
is formed.

The robot 4 configured as described above is connected to the distribution line 2.
To attach the hoisting machine 1 to the distribution line 2, first, the string 6 is suspended from the pulley 7, and the hoisting machine 1 is attached to the power distribution line 2 using the hook 9.
and fix one end 6A of the string 6 to the upper surface of the robot 4 on the center of gravity G.

Next, the other end 6B of the string 6 is attached to the electric reel 10.
When the robot 4 is wound up, the robot 4 is lifted upward.

Note that the electric reel 10 is placed offset from the longitudinal center line of the lifting rod 3, and the operator is working at that placement position, so that, for example, if the robot 4 that has been lifted halfway falls, The safety of the workers is ensured, and the lifting status of the robot 4, etc., can be easily checked visually.

When the robot 4 is lifted as described above, the lifting rod 6 enters the notch 4C and the lifting rod 6 guides the movement of the robot 4, thereby preventing problems such as rotation of the robot 4. Can be done.

Furthermore, when the robot 4 is lifted up to the height of the support 5, the support 5 enters the notch 4C and functions as a stopper, allowing the robot 4 to maintain a stable state without shaking. , positioning with respect to the power distribution line 2 is performed accurately.

Robot 4 is lifted as described above,
When the lower height position of the running wheel 4A slightly exceeds the upper height position of the wiring line 2, the running wheel 4A is moved to a position on the center of gravity G (in this embodiment, remote control using an infrared remote control is performed). ).

Then, when the string 6 is slightly loosened, the robot 4 moves downward due to its own weight, the running wheels 4A ride on the power distribution line 2 (see FIG. 3), and the robot 4 is attached to the power distribution line 2.

When the robot 4 is attached to the power distribution line 2, the robot 4 is moved to a desired position along the power distribution line 2 by rotating the running wheels 4A using an infrared remote control as shown in FIG.

As explained above, in this embodiment, the robot 4
When lifting the robot 4, the lifting rod 6 and support body 5 function as a guide and a stopper, respectively, so that the work of attaching the robot 4 to the distribution line 2 is easily carried out, which improves the workability and economy of this type of work. improves.

In addition, since the electric reel 10 is used, the weight limit of the robot 4 is relaxed, and the string 6
Since there is no need to hold the string 6 by hand, restrictions on the thinness of the string 6 are also eased.

Furthermore, even after the robot 4 is attached to the power distribution line 2, one end 6A of the string 6 is fixed to the robot 4, so that if a malfunction occurs such as the rotational drive of the running wheels 4A becoming impossible, etc. By winding up the string 6, the robot 4 can be easily recovered.

In addition to the above embodiments, the robot 4 includes:
Examples include those that measure the temperature, current, insulation deterioration, etc. of the power distribution line 2, and those that are used to attach a permanently installed sensor to the power distribution line 2.

In the case of the former, a sensor is installed in the main body, and the device is configured to take measurements while moving along the power distribution line 2, and the measurement results are transmitted to the worker side via wireless, optical fiber, etc. .

On the other hand, the latter is configured to be movable and equipped with an automatic tool for attaching the sensor to a position on the distribution line 2 where the sensor is attached.

In both of the above embodiments, by forming the lifting rod 3 and the string 6 with an insulating material, it is possible to safely lift the heavy object 4 to the distribution line installation position during charging.

In particular, by using aramid-based Keppra as the material for the string 6, the insulation properties are further improved, and the string 6 can be made thinner, which eliminates inconveniences such as the string 6 swinging in the wind. can be prevented.

On the other hand, if FRP (glass fiber reinforced plastic) is used as the material for the lifting rod 3 and the lifting rod 3 is configured to be elastic, the lifting rod 3 becomes lightweight and can be shortened when carried, making it easier to handle. Convenient to carry.

Furthermore, by configuring the support body 5 to be detachably attached to the lifting rod 3, and by making it possible to attach another member (for example, a kite catching blade) to one end of the lifting rod 3, it is possible to use the same lifting rod. 3 can be used to measure the height of the power distribution line 2, to recover a kite caught on the power distribution line 2, etc.

(Effects) As understood from the above explanation, in the lifting machine according to the present invention, the lifting rod is used to lock the hook to the linear object, so that the lifting machine can move the linear object to the desired position. In this state, the heavy object is lifted to the position where the linear object is placed using a pulley.

Therefore, one person can easily lift a heavy object to the position where the linear object is disposed, resulting in extremely high workability and economy.

[Brief explanation of the drawing]

Fig. 1 is an external view of a first embodiment of a lifting machine according to the present invention, Fig. 2 is an external view of the lifting machine in a second embodiment, and Fig. 3 is an external view of a robot used in the second embodiment. It is an operation explanatory diagram. 1... Lifting machine, 2... Linear object (distribution line),
3... Lifting rod, 4... Heavy object (robot),
5... Support, 6... String, 7... Pulley, 7A...
Rotating axis, 8... stand, 9... hook, 10... electric reel.

Claims (1)

[Claims for Utility Model Registration] A lifting rod formed to have an appropriate length; a pulley rotatably supported by a support provided at one end of the lifting rod; and a pulley facing the lifting rod. A lifting machine, comprising: a hook mounted on the support;