JPH036584Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an automatic reinforcing bar feeder that automatically feeds reinforcing bars one by one to a gripping device of an automatic reinforcing bar assembly crane.

``Prior Art'' When assembling reinforcing bars, long and heavy reinforcing bars are brought in by hand or by slinging them onto the tip of a crane's wire.

Not only when the work is carried out manually, but also when lifting by a crane, manpower is required to control the posture of the reinforcing bars and operate the restraining rope.

Therefore, in a separate application, the applicant has assembled a telescoping boom to a mast erected on a revolving frame mounted on a stand, a telescoping arm is attached to the tip of the telescoping boom, and a tightening mechanism is built into the tip of the telescoping arm. We have proposed an automatic reinforcing steel assembly crane that can assemble reinforcing bars without swinging even in strong winds, and is equipped with a gripping device that utilizes the force of a disc spring and is opened using a hydraulic jacking force.

This has led to automation that relieves workers of heavy labor.

Since the above-mentioned gripping device must grasp the reinforcing bars one by one at the center, the reinforcing bars are manually taken out one by one from the reinforcing bar bundle and placed on the grasping stage.

``Problem that the invention attempts to solve'' As mentioned above, automation has been achieved in the automatic crane for assembling reinforcing bars, but the stage of supplying reinforcing bars to this crane has not been automated.
Pulling out and installing reinforcing bars one by one from a bundle of reinforcing bars is extremely difficult, and poses problems in terms of worker fatigue and safety.

``Means for solving problems'' and ``effects'' This proposal was made in view of the above circumstances, and is equipped with a vibrator on the back side of the receiving surface in order to vibrate the reinforcing bars brought in in bundles and align them in parallel. , a reinforcing bar rolling platform made of a steel framework that is connected to the rolling surface via a slope plate-shaped dam and has a dam stop at the lower end of the reinforcing bar pedestal, which is made of a steel framework designed to have a gentle slope. are installed in series, and on both sides in the width direction of the weir section at the starting end of the reinforcing bar rolling platform, the reinforcing bars are placed on the reinforcing bar rolling platform beyond the weir section, which is made up of swinging arc plates with claws provided at the tips of the side surfaces. A single reinforcing bar hoisting device is provided for loading the reinforcing bars, and at the center of the width direction of the dam, there is an outer fixed steel frame that stands up in an upwardly extending position, and a standing position in which the reinforcing bars are placed in a rising position, and a prone position below the surface of the reinforcing bar. An automatic reinforcing bar feeder is realized by providing a grip guide that guides the grasping device of an automatic crane, which has a protruding grip formed by facing an inner movable steel frame that swings between the two, to the center of the reinforcing bars of the damming part. The point is that complete automation has been achieved at the reinforcing bar supply stage mentioned above.

"Example" This will be explained in detail below based on the drawings.

Figure 1 is an overall plan view of the automatic reinforcing bar feeder according to the present invention, Figures 2 to 4 are side end views in the direction of arrows in Figure 1;
They are an explanatory diagram of the drive source mechanism in the direction of arrows, and an explanatory diagram of the reinforcing bar automatic supply mechanism in the direction of - arrows.

In the figure, 1 is a reinforcing bar pedestal made of a steel framework with horizontal members arranged at intervals on a gentle slope.
A vibrator 3, . . . is provided at a predetermined location on the back side of the receiving surface in order to align the bundled reinforcing bars 2, . . . brought in parallel.

At the lower end of the reinforcing bar pedestal 1, a reinforcing bar rolling platform 5 is connected, also made of steel framework, via a slope plate-shaped dam 4, and at the lower end of the reinforcing bar holder 5, a protruding steel frame support 6 is provided. The dam is constructed by the dam.

Naturally, the steel framework that has a weir part in the middle of the construction is designed to have a width sufficient to allow long reinforcing bars to be stably mounted.

Reference numeral 7 denotes a single reinforcing bar hoisting mechanism which swings within a predetermined angular range and has claws 7a for hoisting the reinforcing bars at the tips of the side surfaces disposed at positions on both sides in the width direction suitable for supporting two reinforcing bars of the weir section 4. This is an arcuate plate, and by reciprocating the swinging arcuate plate 7 within a predetermined angle, it lifts and transports the reinforcing bars 2 one by one to a level exceeding the top of the weir section 4, and then returns to the old position. During this movement, the circumferential surface 7b of the plate 7 serves to prevent the next reinforcing bar from advancing to the hoisting position.

In this drive mechanism, the plate 7 is keyed to a rotating shaft 11 which is transmitted via gears 9 and 10 from a motor 8 installed in the center of the steel frame of the reinforcing bar rolling table 5.

The reinforcing bars 2 thrown onto the reinforcing bar rolling table 5 also have inertial force, and quickly roll over to the dam stop part of the column 6.

Reference numeral 12 denotes a guide for guiding a grip 13 of an automatic reinforcing steel assembly crane provided at the center in the width direction of the dam part to the center of the reinforcing steel 2, and this guide faces the outer fixed steel frame 12a which is tilted outward. It consists of an inner movable steel frame 12b that takes a symmetrical tilted position, and when the grip 13 is in the guiding position as if the hand is spread upward, the grip 13 is guided toward the reinforcing bar 2 at the bottom.

As is clear from the figure, if the movable steel frame 12b is upright, the reinforcing bars thrown onto the rolling platform 5 cannot reach the dam stop, so the movable steel frame 12b in such a case will not roll. It is stored under the 5th side of the stand.

That is, the sinkable steel frame 12b whose lower end is pivoted 15 has a crank 16 attached to the rotating shaft 11 in the middle thereof.
The tip of the bar is pivoted 17, and it swings into a retracted position when rolling the reinforcing bars and into an upright position when the rolling of the reinforcing bars is completed.

The reciprocating rotation control within a predetermined angle of the rotation shaft 11 that causes the above-mentioned rocking is performed in the manner shown in FIG.

In other words, the limit switch provided in the weir section 4
The LS-1 detects the presence of the reinforcing bars 2, drives the motor 8, rotates the plate 7, and transports the reinforcing bars 2.

At this time, the movable steel frame 12b moves in the storage direction.

The motor 8 is stopped by detection by a limit switch LS-2 installed at a point where the reinforcing bar 2 reaches a level exceeding the top of the weir section 4.

The reinforcing bar 2 rolls down the rolling table 5, and when it hits the pillar 6, the limit switch LS installed here is activated.
3 is detected and drives the motor 8 in reverse rotation.

As a result, the movable steel frame 12b returns toward the plate 7 and the old position, and the movable steel frame 12b stands up.

Limit switch installed in the area corresponding to the old location above
LS-4 detects the return and stops motor 8.

Thereafter, the reinforcing bars 2 are fed to the grip 13 one by one using the same procedure.

14 in the figure is an adjuster star bolt for setting the inclination of the reinforcing bar holder 1.

"Effect of the invention" As described above, according to the present application, the rebar supply to the rebar automatic crane developed by the present applicant can be completely automated, so that complete automation of a series of rebar handling operations can be realized, which is practical. Very suitable.

[Brief explanation of the drawing]

Figure 1 is an overall plan view of the proposed automatic reinforcing bar feeder, Figures 2 to 4 are side end views taken in the direction of the arrows in Figure 1, and ~
An explanatory diagram of the drive source mechanism in the direction of arrows, an explanatory diagram of the reinforcing bar automatic supply mechanism in the direction of arrows, and FIG. 5 are diagrams for explaining the control procedure. 1...Reinforcing bar cradle, 2...Reinforcing bar, 3...Vibrator, 4...Weir, 5...Reinforcing bar rolling table, 6...
Extruded steel frame support, 7... Arc plate, 7a
...Claw portion, 7b...Circumferential surface, 8...Motor,
9, 10... Gear, 11... Rotating shaft, 12... Guide, 12a... Outer fixed steel frame, 12b... Inner movable steel frame, 13... Grip, 14... Adjuster star bolt for tilt setting, 15... Pivot stop, 16...
Crank, 17... Pivotal stop.

Claims (1)

[Scope of utility model registration request] A vibrator is installed on the back side of the receiving surface in order to vibrate and align reinforcing bars brought in in the form of a bundle in a parallel manner. A reinforcing bar rolling platform made of a steel framework is connected to the rolling surface and has a dam stop at the lower end, and on both sides in the width direction of the dam at the starting end of the reinforcing bar rolling platform, claws are installed at the tips of the side surfaces. A single reinforcing bar hoisting device is provided to place the reinforcing bars on a reinforcing bar rolling platform beyond the weir part, which is made of a swinging arc plate with a section, and at the center of the width direction of the weir part, there is a device that stands up and spreads upward. A gripping device for an automatic crane in which a grip is protruded from an outer fixed steel frame and an inner movable steel frame that swings between an upwardly spread standing position and a lowered position below the reinforcing bar rolling platform face. An automatic reinforcing bar feeder characterized in that a grip guide is provided to guide the reinforcing bars to the center of the damming part.