JPH053473Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention relates to a gripping device for an arc-shaped long member, which is used when placing a long member such as a reinforcing bar bent into an arc shape on a predetermined floor surface. .

<Conventional technology> Heavy arc-shaped reinforcing bars with a diameter of 50 mm, a length of 10 m, and a weight of about 150 kg are used in the foundation work of power plants. This is done manually by inputting data, or by using a crane.

When using a crane, as shown in Fig. 6, ropes are hung around the intersection points A and B of the arc-shaped reinforcing bars 1 with a straight line passing through the center of gravity G, and the floor surface where the arc-shaped reinforcing bars 1 are planned to be placed is drawn. In other words, the plane containing the entire arc-shaped reinforcing bar 1 is parallel to the installation surface, and the crane is used to lift it, and the arc-shaped reinforcing bar 1 is aligned so that it is on the above-mentioned installation surface. The ropes are being hoisted up and reinforcements are placed. In addition, in FIG. 6, l indicates the distance between the intersection points A and B, and R indicates the bending radius of the arc-shaped reinforcing bar 1.

<Problem to be solved by the invention> However, in the conventional reinforcing work of the arc-shaped reinforcing bars 1 performed as described above, when the rope hanging position is inside the intersection points A and B, the arc-shaped reinforcing bars are Both ends of the arc-shaped reinforcing bar 1 face downward, and when it is on the outside, both ends face upward, so in order to align the arc-shaped reinforcing bar 1 with the installation surface, it is necessary to hold the arc-shaped reinforcing bar 1 horizontally. An auxiliary worker is required, and if the length and bending radius R of the arc-shaped reinforcing bars 1 are different, the worker must decide the intersection points A and B each time, which makes it difficult to arrange the arc-shaped reinforcing bars 1. There are some problems that make it difficult to improve efficiency.

In addition, as described above, the arc-shaped reinforcing bars 1 are connected to the intersections A and B.
Since it is supported by ropes only at two points, when a crane is run with the arc-shaped reinforcing bar 1 held horizontally, the arc-shaped reinforcing bar 1 will be affected by the acceleration due to acceleration and deceleration during transportation, and the circular There is also the problem that the arcuate reinforcing bar 1 swings unstably, making it difficult to predict the safety of the work.

The present invention was made in view of the actual situation in the prior art described above, and its purpose is to improve the efficiency of the work of arranging long arcuate members and improve the safety of the work. An object of the present invention is to provide a gripping device for an arcuate elongated member.

<Means for Solving the Problems> In order to achieve this object, the present invention includes a central beam disposed in the center, and a first beam connected to each of both ends of the central beam so as to be relatively rotatable. a first rotation means for relatively rotating the side beam, the second side beam, the center beam and the first side beam; and a first rotation means for relatively rotating the center beam and the second side beam. a second rotation means, a first grip part provided on the central beam, a second grip part provided on the first side beam, and a third grip part provided on the second side beam. The arc-shaped elongated member is gripped by cooperation of the first gripping part, the second gripping part, and the third gripping part.

<Operation> The present invention is constructed as described above, and operates the first and second rotation means according to the bending radius of the arc-shaped elongated member to move the first side beam relative to the central beam. and the second side beam, the first,
Since the arcuate elongated member is gripped by the cooperation of the second and third gripping parts, the arcuate elongate member is automatically gripped by the operator's operation without the need for an auxiliary worker. The work of arranging the length members can be done.

In addition, since the arcuate elongated member is supported at three points by the first, second, and third gripping portions, the arcuate elongate member is attached to the floor surface on which it is planned to be placed. It can be stably held in a parallel horizontal state, and therefore, even when the long member is transported while being held in such a horizontal state, it is affected by acceleration due to acceleration and deceleration associated with this transport. Transport can be carried out without any problems.

<Example> Hereinafter, a gripping device for an arc-shaped elongated member of the present invention will be explained based on the drawings.

Figures 1 to 5 are explanatory diagrams showing an embodiment of the present invention. Figure 1 is a plan view showing the overall configuration of this embodiment, and Figure 2 is a view taken along arrow A-A in Figure 1. Correspondingly, FIG. 3 is a side view showing the first gripping part and the second gripping part, FIG. 3 is a side view showing the third gripping part, and FIG. 4 is the overall configuration of the reinforcement arrangement machine equipped with this embodiment. FIG. 5 is an explanatory view showing the gripping operation according to this embodiment.

In FIGS. 1 to 3, reference numeral 1 denotes an arcuate elongated member, that is, the aforementioned arcuate reinforcing bar. Reference numeral 2 designates a central beam disposed in the center, and reference numerals 3 and 4 designate a first side beam and a second side beam connected to both ends of the central beam 2 so as to be relatively rotatable. 5 is a pin connecting the central beam 2 and the first side beam 3; 6 is a pin connecting the central beam 2 and the second side beam 3;
7 and 8 are brackets fixed to the center beam 2, 9 and 10 are brackets fixed to the first side beam 3 and the second side beam 4, respectively; 11 is a pin that connects one end to the side beam 4; A hydraulic cylinder 12 is connected to the bracket 7 and the other end to the bracket 9, and 12 is a hydraulic cylinder connected to the bracket 8 at one end and to the bracket 10 at the other end. The pin 5, brackets 7, 9, and hydraulic cylinder 11 described above constitute a first rotation means for relatively rotating the central beam 2 and the first side beam 3, and the pin 6, bracket 8, and , 10, and the hydraulic cylinder 12 constitute a second rotation means for relatively rotating the central beam 2 and the second side beam 4.

Further, 13, 14, and 15 are provided on the central beam 2, the first side beam 3, and the second side beam 4, respectively, and are a first gripping part, a second gripping part, which can grip the arcuate reinforcing bar 1, This is the third gripping section. Among these, the first gripping part 13 is fixed at a central position at the bottom of the central beam 2, as shown in FIG. 2, for example, and the fixed finger 16 is rotatably connected to the fixed finger 16 via a pin 17. It has a movable finger 18 and a hydraulic cylinder 19 that drives the movable finger 18, and outputs ON and OFF signals to the inner surface of the fixed finger 16 facing the movable finger 18 depending on whether an object is in contact or not. It has a touch sensor 20 that In addition, the second gripping portion 14
is fixed, for example, to the end of the first side beam 3, and as shown in FIG.
It has a fixed finger 21, a pin 22, a movable finger 23, a hydraulic cylinder 24, and a touch sensor 25 similar to that of the third gripping part 15, which is fixed to the end of the second side beam 4, As shown in the figure, it has a fixed finger 26, a pin 27, a movable finger 28, a hydraulic cylinder 29, and a touch sensor 30 similar to the first gripping part 13.

Note that 31 shown in FIG. 2 is a support body fixed to the upper part of the central beam 2 and supporting the gripping device of this embodiment.

The embodiment configured in this manner is installed, for example, in a reinforcing machine illustrated in FIG. 4, and performs the work of gripping the arcuate reinforcing bars 1 as described below.

The reinforcement arrangement machine shown in FIG. 4 includes a traveling body 32, a revolving body 33 disposed on the traveling body 32, a boom 34 extendably provided on the revolving body 33, and an arcuate reinforcing bar 1. The above-mentioned support body 31 has a possible mounting part 35 and supports the gripping device of this embodiment.
is provided at the tip of the boom 34 so as to be movable up and down. Although not particularly shown, this reinforcement arrangement machine includes the touch sensors 20, 25, and 30 described above.
Hydraulic cylinders 11 and 1 according to ON and OFF signals
2, 19, 24, 29, boom 34, etc., is equipped with a control device that outputs a signal for controlling the drive.

In such a reinforcing machine, when gripping the arc-shaped reinforcing bars 1, for example, the hydraulic cylinders 11 and 12 are extended in advance to hold the central beam 2, the first side beam 3, and the second side beam 4.
while keeping the hydraulic cylinders 19, 24, 2 in a straight line.
9 is extended to open the movable fingers 18, 23, 28 as illustrated by the solid lines in FIG. 1, the above-mentioned boom 34 as shown by arrow 36 in FIG.
contract and bring them closer together.

Then, the fixed finger 16 of the first gripping part 13
When the touch sensor 20 contacts the arc-shaped reinforcing bar 1, an ON signal is output from the touch sensor 20, and a signal is output from the control device (not shown) provided in this reinforcement arrangement machine to the hydraulic cylinder 19, causing the hydraulic cylinder 19 to contract. As a result, the movable finger 18 rotates in the closing direction, and the arcuate reinforcing bar 1 is gripped by the first gripping portion 13 . In addition, the touch sensor 20 described above also outputs
In response to the ON signal, a signal to stop the contraction of the boom 34 is output from the control device (not shown), and the hydraulic cylinders 11 and 12 are connected to the first side beam 3 and the second side beam 4 at the arrow 37 in FIG. ，
A signal is output that causes the lens to contract so as to rotate in 38 directions.

Then, the first side beam 3 and the second side beam 4 rotate, and the touch sensor 25 of the second grip part 14 and the touch sensor 30 of the third grip part 15 rotate.
When it comes into contact with the arcuate reinforcing bar 1, the signal output from each touch sensor 25, 30 causes
Hydraulic cylinder 1 via a control device (not shown)
1, 12, the second gripping part 14, the third
The movable fingers 23, 28 are rotated in the closing direction with the operation of the hydraulic cylinders 24, 29 of the gripping part 15, and thereby the arcuate reinforcing bar 1 is moved to the second position.
It is also gripped by the gripping part 14 and the third gripping part 15 .

While the gripping is being carried out in this manner, for example, the boom 34 shown in FIG. The body 31 is lowered, and the hydraulic cylinder 19 of the first gripping part 13 and the second
When the hydraulic cylinder 24 of the gripping part 14 and the hydraulic cylinder 29 of the third gripping part 15 are operated to rotate the movable fingers 18, 23, 28 in the opening direction,
These first gripping parts 13, second gripping parts 14,
The grip of the arc-shaped reinforcing bar 1 by the third gripping part 15 is released, the arc-shaped reinforcing bar 1 is placed on the floor surface, and this reinforcement work is completed.

In the embodiment configured in this way, the rotation of the first side beam 3 and the second side beam 4 corresponding to the bending form of the arcuate reinforcing bar 1, that is, the
The operator of the reinforcement arrangement machine shown in FIG. This can be done automatically by the operation of , and therefore reinforcement work can be done without the need for an auxiliary worker.

In addition, the first gripping part 13, the second gripping part 14,
Since the arc-shaped reinforcing bar 1 is supported at three points by the third gripping part 15, it can be stably held in a horizontal state. Therefore, when extending the boom 34 or moving the traveling body 32 while maintaining such a horizontal state, this reinforcement work can be performed without being affected by acceleration due to acceleration or deceleration associated with the conveying operation. can be carried out.

<Effects of the invention> Since the gripping device for an arcuate long member of the present invention is configured as described above, it does not require the intervention of an auxiliary worker as in the conventional case, and can grip an arcuate elongate member. Reinforcement work can be performed automatically while holding members in a stable horizontal state, thus improving work efficiency and ensuring work safety compared to conventional methods. effective.

[Brief explanation of the drawing]

1 to 5 are explanatory diagrams showing an embodiment of the grasping device for an arc-shaped elongated member of the present invention, FIG. 1 is a plan view showing the overall configuration of this embodiment, and FIG. 1
Corresponding to the A-A arrow direction in the figure, FIG. 3 is a side view showing the first gripping part and the second gripping part, FIG. 4 is a side view showing the third gripping part, and FIG. 4 is a side view showing this embodiment. FIG. 5 is an explanatory view showing the gripping operation according to this embodiment; FIG. 6 is a plan view illustrating the conventional gripping operation of an arcuate long member. . 1... Arc-shaped reinforcing bar (arc-shaped long member), 2...
Central beam, 3...First side beam, 4...
Second side beam, 5, 6...pin, 7, 8,
9, 10... Bracket, 11, 12... Hydraulic cylinder, 13... First gripping part, 14... Second gripping part, 15... Third gripping part.

Claims (1)

[Scope of utility model registration request] A central beam disposed in the center, a first side beam and a second side beam connected to each end of the central beam so as to be relatively rotatable, and the central beam and the first side beam. A first rotating means for relatively rotating the central beam and a second side beam for relatively rotating the central beam and the second side beam.
a first grip part provided on the central beam, a second grip part provided on the first side beam, and a third grip part provided on the second side beam.
A gripping device for an arcuate elongated member, characterized in that the arcuate elongated member is gripped by cooperation of the first gripping portion, the second gripping portion, and the third gripping portion. .