JPH08169687A - Article transport method and apparatus - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the structure of the safety device of the crane. [Structure] A combination of a base body 2 and an operating body 5 is provided. The base body 2 is a portion corresponding to a hanging metal fitting of a crane, is held in a standby posture, and has an electromagnet 3 on its lower surface. The actuation body 5 is composed of a turning shaft 6 and a bending arm 7. The turning shaft 6 is held by the base body in a constant angle posture, and the bending arm 7 turns around the turning shaft 6 to a standby posture and a receiving posture. The posture M is changed to the posture, and the standby state is changed to the receiving posture to hold the article M adsorbed and held by the electromagnet 3 of the base 2, and the base 2 is held at the time of power failure.
The articles M that have fallen further are received to prevent them from falling onto the floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to conveyed articles, especially iron materials,
TECHNICAL FIELD The present invention relates to an article transport method and apparatus for suspending and transporting a long object such as a binding steel bar.

[0002]

2. Description of the Related Art In addition to hooks, electromagnets are used as suspending fittings for cranes that suspend and transport loads such as iron materials, binding rods, and steel. When using the hook as the hanging metal of the crane,
Although wire hanging is required for the suspended load, when the electromagnet is used, the suspended load can be detached only by exciting and demagnetizing the electromagnet.

Therefore, when an electromagnet is used for the hanging metal fitting, it is considered that the use of the electromagnet is extremely advantageous for automating the management of the transportation of the articles, since no labor is required to attach and detach the articles to be conveyed to and from the crane. To be

[0004]

However, even if an electromagnet is used for the hanging metal of the crane, if the power supply to the electromagnet is interrupted due to a power failure or other unexpected accident during the transportation of the suspended load, the suspended load falls, Due to danger, in reality, as a safety measure, an auxiliary article support mechanism is provided separately from the electromagnet.

As a conventional support mechanism, for example, as shown in FIG. 5, arms 22 are provided on both sides of a suspended load M adsorbed by an electromagnet 21.
And the arm end 23 further inward, and the suspended load M
It is known to have a mechanism that overhangs the lower surface of the.
According to this support mechanism, when the suspended load M being transported falls apart from the electromagnet 21, the arm end 23 whose lower surface is bent is bent.
It is possible to prevent the fall on the floor below.

However, since the supporting mechanism uses a hydraulic mechanism for controlling the vertical movement and the rotational movement of the arm 21, the equipment is large and heavy, and in the case of an overhead crane, a strengthening structure is required for the ceiling beam. However, there was a problem in that the building also needed a larger strengthening structure in some cases. However, to solve this problem,
Although it is easy to manually hang a wire on a suspended load and stop it on the crane, the need for manpower to unload and unload the suspended load is against the purpose of automating the transportation of goods. Also, the work is dangerous.

It is an object of the present invention to provide an article transporting method and apparatus having a very simple structure and taking safety measures for preventing the hanging load from falling.

[0008]

In order to achieve the above object, in the article conveying method according to the present invention, a crane,
It is a method of transporting an article by holding it in a curved arm equipped with a hanging metal fitting of a logistics machine that lifts a load such as a lifting machine and transports it, and the curved arm has a hook type with one end as a free end. The bending arm is rotatably supported by a turning shaft that forms a certain angle with respect to the surface formed by the hook-shaped bending surface, and the article can be held in the bending arm by rotating the turning shaft. Is rotated and the posture is changed to receive the article in the hook mold.

Further, the article held by the hanging metal fitting is held in the bending arm, and when the article falls from the hanging fitting, the article is received in the bending arm to prevent the article from falling on the ground.

Further, the article is carried in the curved arm and a part of the article is supported on the curved arm to convey the article.

[0011] Further, a hanging cord connected between the hanging metal fitting and the free end of the bending arm is provided, and the lower peripheral surface of the article held by the hanging metal fitting is changed together with the bending arm by the posture change of the bending arm. Hold in
When an article falls from the hanging metal fitting, the article is received on the hanging string to prevent the article from falling to the ground.

[0012] Further, it has a hanging strap connected between the hanging metal fitting and the free end of the curved arm, and holds an article in the curved arm,
A part is supported on a hanging string to convey an article.

The article conveying apparatus according to the present invention is an article conveying apparatus having a base and an operating body, wherein the base is
It is a part corresponding to a hanging metal fitting of a logistics machine that lifts and carries a load such as a crane and a hoist, and is supported in a horizontal posture, and the operating body has a turning shaft and a bending arm integrally, The shaft is rotatably supported by the base body at a certain angle with respect to the horizontal plane, and the bending arm bends in a hook shape with one end as a free end. The posture is changed between a waiting posture in which the article turns around a standby position above the supporting position of the article and a receiving posture in which the article to be conveyed is held in a curved arm.

Further, the base body has an adsorption surface for articles on the lower surface, and the adsorption surface is an electromagnet for adsorbing and holding the conveyed article held by the bending arm of the operating body on the base body.

Further, the bending arm of the actuating body functions as a support tool for the conveyed article held in the bending arm in the receiving posture.

A suspending cord such as a chain or a rope is provided, and the suspending cord is connected between the base body and the free end of the bending arm of the actuation body, and is held in the bending arm in the receiving posture of the actuation body. It functions as a support tool for the conveyed transport parts.

[0017]

When the bending arm of the actuation body is rotated 180 ° in one direction from the state where the bending arm of the actuating body is kept in the standby position, the bending arm turns around the axis of the turning shaft and moves to the receiving position. Will be converted. The turning direction of the turning shaft is a direction in which the free end of the bending arm is rotated downward. When the suspended load is suction-held on the lower surface of the base body, the suspended load is received in the space between the free end of the curved arm and the base body, and the suspended load is held in the curved arm.

When the hanging load is released due to a power failure or the like during transportation, the hanging load is received by the curved arm. Also, if a hanging string is connected between the free end of the curved arm and the base, the suspended load adsorbed on the basic body will be held together with the curved arm by the hanging strap, and the suspended load dropped from the basic body will be suspended. You can catch it with a string.

Depending on the conveyed article, the article is not limited to the case where the electromagnet is used as the hanging metal fitting to hold the article on the substrate, and the article can be held and conveyed only by the actuation body or the combination of the actuation body and the hanging cord.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an example in which the device of the present invention is applied as a safety device for a hanging fitting of an overhead crane.

The hanging fitting 1 has an electromagnet 3 for adsorbing an article to be conveyed on the lower surface of the base body 2. The embodiment is used for transporting a long bound steel material, in which electromagnets 3 are provided on the lower surfaces of both ends of the base body 2 in the longitudinal direction, and the base body 2 is a beam hanging from a club (not shown) traveling on a crane girder. The four fork-shaped branch rods 4a, 4a are integrally held and held in a horizontal posture.

In the present invention, the base body 2 is equipped with the operating body 5. The branch rods 4a, 4a are attached to both ends in the longitudinal direction of the base body 2, and in the embodiment, the branch rods 4a, 4a.
a forms a part of the base body 2 and also serves as a mounting portion for the actuation body 5.

As shown in FIG. 2, the operating body 5 is composed of a turning shaft 6 and a bending arm 7. The turning shaft 6 is rotatably supported by the support cylinder 8 on the branch rod 4a in an inclined posture toward both ends in the longitudinal direction of the base body 2, and the bending arm 7 holds the tip end of the turning shaft 6 by about 45 mm.
It is a portion that is bent at a constant angle of about 0 °, its extended ends are extended to both ends of the base body 2, and is bent into a hook shape within the same plane of the bending angle with respect to the turning shaft 6. Between the free end 7a of the curved arm 7 folded back toward the base body 2 and the base body 2,
It is kept at regular intervals. The hook shape and the inner diameter of the bending arm 7 are not particularly limited, and may be any shape and size required to hold the outer diameter of the bound steel material or the like to be suspended on the base 2.

FIG. 2 shows a state in which the bending arm 7 is held in the standby posture. When the turning shaft 6 is turned in the arrow direction from the state in which the bending arm 7 is held in the standby posture, when the turning shaft 6 is turned 180 ° from the beginning, the bending arm 7 is placed in the receiving posture as shown in FIG. To be converted.

The rotary shaft 6 of each actuating body 5 is provided with 180
A drive device 9 that is rotationally driven in the forward and reverse directions at a turning angle of ° is connected. The drive device 9 is an electric motor or a hydraulic motor. However, it can also be rotationally driven manually.

In the embodiment, with the curved arm 7 held in the standby position as shown in FIG. 2, the base body 2 is lowered directly above the article M to be conveyed, for example, a bundled steel material, the power is turned on, and the electromagnet is turned on. 3 is excited to attract the article M to the attraction surface of the electromagnet 3. Next, the base body 2 is pulled up to convey the article M to a predetermined position. During this period, the drive device 9 is driven to rotate the turning shaft 6 in the direction of the arrow, whereby the article M is transferred to the base body 2 and the bending arm. 7 is received in the curved arm 7 through the gap between the free ends of the curved arm 7, and the free end 7a of the curved arm 7 rises upward as shown in FIG. Will be held in.

However, as is apparent from FIG. 2, the protruding length of the article M from both ends of the base body 2 in the longitudinal direction is as follows.
Must be within the inner diameter of. Free end 7 of bent arm 7
The a is locked and fixed to the retainer 10 attached to the base 2. As long as the inner diameter of the hook of the curved arm 7 is larger than the outer diameter of the article M attracted by the electromagnet 3, the weight of the article M is not applied to the curved arm 7. However, during transportation of the article M, by any chance,
When a power failure occurs, the suction force of the article M disappears and the article M falls, but both ends of the article M are received by the curved arms 7 of the actuation body 5 to prevent the article M from falling onto the floor.

In the above embodiments, an example in which the conveyed article M is received on the curved arm 7 in the case of a power failure during the conveyance has been shown. Therefore, according to this embodiment, the bending arm 7 needs to have a strength enough to support the weight of the conveyed article M.

The angle formed by the curved arm 7 and the turning shaft 6 is 4
When the angle is set to 5 °, it is preferable that the bending arm 7 has a horizontal posture and the receiving posture has a vertical posture, but the point is that the bending arm 7 hinders the lifting of the article M during standby. In order to avoid the above, it is sufficient to wait above the support position, and it does not necessarily have to be a horizontal posture.

As for the receiving posture, if the hook shape of the bending arm 7 is vertical, there is no problem when the weight is received on the bending arm 7, but the posture is substantially forward or backward. Does not matter. The same applies to the following examples.

FIG. 4 shows an example in which a suspended article 11 of a constant length such as a chain, a wire, or a rope is used in addition to the curved arm 7 to receive a conveyed article. The hanging string 11 has a base 2 at one end thereof.
And the other end may be attached to the free end 7a of the curved arm 7.
However, as shown in FIG. 4, when the bending arm 7 is in the receiving posture, the length of the hanging string 11 is set so that the curved shape of the hanging string 11 is within the inner diameter of the bending arm 7. I need to put it. In this embodiment, when a power failure occurs during the transportation of the article M, the article M dropped from the electromagnet 3 is received on the hanging cord 11, and the curved arm 7 functions as a guide for the hanging cord 11.

In the present invention, the waiting posture of the curved arm 7 is the posture when the unloading or unloading is completed, and the receiving posture is the posture when holding the conveyed article M. Therefore, when the substrate 2 is lowered onto the article M on the floor, the bending arm 7
Is held above the supporting position of the article in the standby position and therefore does not hinder the attraction and holding of the article M, and is formed below the article M when it is attracted and held by the electromagnet 3 and pulled up. Space can be used to change the bent arm from the standby position to the receiving position.

In the above embodiment, an example in which the carrying device of the present invention is applied to a safety device for a crane using an electromagnet as a hanging metal fitting has been described. It goes without saying that, in combination with 11, the article M can be used as an independent hanging tool of a crane to support a part of the article M on the bending arm 7 of the actuating body 5 or on the hanging string 11 and convey the article M as it is.

[0034]

As described above, according to the present invention, it is only necessary to attach an actuator and its drive device as a safety device for a crane using an electromagnet as a hanging metal fitting and other logistics machines, and the mechanism is simple and the weight is high. Does not become excessively large, the safety device can be made smaller and lighter, and the cargo handling work can be easily realized. Furthermore, it is not limited to being used as a safety device, and an operating body or a combination of an operating body and a sling cord is used. Therefore, it has an effect that it can be used as an independent hanging metal fitting. It is also convenient to attach the bending arm to the turning shaft in a detachable manner. The curved arm can be easily obtained by bending a steel bar or the like, and in the case of breakage, it can be used as a replacement part by attaching it to the rotating shaft.

[Brief description of drawings]

FIG. 1 is a diagram showing a crane safety device to which the present invention is applied.

FIG. 2 is a diagram showing a posture of an operating body during standby.

FIG. 3 is a diagram showing a posture of an actuating body during operation.

FIG. 4 is a diagram showing another embodiment of the present invention.

FIG. 5 is a diagram showing a conventional example of a safety device for a crane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension metal fitting 2 Base body 3 Electromagnet 4 Beam 4a Branch rod 5 Actuator 6 Turning axis 7 Curved arm 7a Free end of curved arm 8 Support tube 9 Drive device 10 Retainer 11 Hanging string

Claims (9)

[Claims] 1. A method of transporting an article, wherein the article is held in a curved arm provided in a hanging metal fitting of a distribution machine for lifting and transporting a load such as a crane or a hoist, and the curved arm comprises: It bends in a hook shape with one end as a free end, and is rotatably supported by a turning shaft that forms a certain angle with respect to the surface formed by the curved surface of the hook shape. An article conveying method, characterized in that a curved arm is swung by rotational driving of a shaft, the posture thereof is changed, and the article is received in a hook mold. 2. An article held by a hanging metal fitting is held in a bending arm, and when the article falls from the hanging fitting, the article is received in the bending arm to prevent the article from falling on the ground. The method of transporting an article according to claim 1. 3. The article is carried by holding the article in the bending arm and supporting a part of the article on the bending arm.
The method of transporting an article according to. 4. A hanger strap having a suspending cord connected between a suspending metal fitting and a free end of the bending arm, and the lower peripheral surface of the article held by the suspending metal fitting together with the bending arm by changing the posture of the bending arm. 2. When the article is held by the hanging metal fitting, and when the article falls from the hanging metal fitting, the article is received on the hanging string to prevent the article from falling to the ground.
The method of transporting an article according to. 5. A carrying strap, which is connected between a hanging metal fitting and a free end of a bending arm, holds an article in the bending arm, and supports a part of it on the hanging strap to convey the article. The method of transporting an article according to claim 1, wherein: 6. An article conveying apparatus having a base body and an operating body, wherein the base body is a portion corresponding to a hanging metal fitting of a physical distribution machine that lifts and conveys a load such as a crane and a hoist, and is horizontal. It is supported in a posture, and the actuating body integrally has a turning shaft and a bending arm, and the turning shaft is supported by the base body so that it can turn at a certain angle with respect to the horizontal plane, and the bending arm has one end free. It bends in a hook shape as an end, and it rotates around the axis of rotation in conjunction with the rotation of the revolving axis and waits above the article support position and conveys the conveyed article into the curved arm. An article transporting device, wherein the posture is changed to a receiving posture for holding an article. 7. The base body has an article attracting surface on the lower surface, and the attracting surface is an electromagnet for attracting and holding the conveyed article held in the bending arm of the operating body to the substrate. The article conveying apparatus according to claim 6. 8. The article conveyor according to claim 6, wherein the curved arm of the actuating body functions as a support tool for the conveyed article held in the curved arm in the receiving posture. apparatus. 9. A suspending cord such as a chain or a rope is provided, wherein the suspending cord is connected between the base body and a free end of the bending arm of the actuation body, and is held in the bending arm in a receiving posture of the actuation body. The article transporting device according to claim 6 or 7, which functions as a support tool for the transported transport component.