JPH05156816A - Unloading method for long member - Google Patents

Abstract

PURPOSE:To automatically carry out unloading work with simple equipment, for unloading long members which are loaded in a vertical direction and are carried, and placing them in a horizontal direction at a load storage in an automatic building construction system. CONSTITUTION:The upper end side of a long member 1 in a vertically loaded state is unloaded in a vertically hoisting condition by an overhead traveling crane 52, and is moved in a horizontal direction toward a load storage place 55. A stopper engagement part 7 of the long member 1 is engaged with a stopper pin 54 of the load storage place 55, and the long member 1 is turned horizontally around the engagement point as a center to be placed horizontally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, at the site of a labor-saving and automated building construction system, long members such as beams, columns or PC boards are vertically stacked and conveyed by an elevator or the like, The present invention relates to an unloading method of loading and unloading members and horizontally loading them horizontally in a loading place.

[0002]

2. Description of the Related Art Recently, the following system has been developed as an automated construction method for high-rise building construction. A building assembly plant with a roof and walls will be installed at the building construction site so that construction can be performed without being affected by the weather such as rain and wind. The building assembly factory has the same number of pillars as the main building (the building to be constructed) and span, and each pillar is equipped with a lift-up mechanism.
This lift-up mechanism structurally supports the entire building assembly factory and is a means for raising the factory one floor at a time. That is, the work of assembling the main body building for one floor immediately below the building assembly factory, raising the entire building assembly factory by one floor using the main body building as a scaffold, and assembling the next floor are repeated.

An overhead crane is installed inside the building assembly factory to carry out cargo handling work on the entire floor to be constructed. Further, the overhead crane is equipped with various work robots such as a steel frame assembly robot and a welding robot, and automatically performs operations such as assembling of steel frame members, welding, welding inspection, floor member assembly, and interior member arrangement.

An automatic warehouse is installed on the premises of a building construction site or in the basement, and members such as steel columns, beams, floor slabs, exterior panels, and various units that are factory-produced in advance are arranged and temporarily stored in the automatic warehouse. It In addition, a stacker crane that can be operated horizontally and vertically is installed in the warehouse, and the necessary parts are automatically taken out according to the program and loaded on the automatic carrier (truck).

Each member is transported from the automated warehouse to the building assembly factory by the following transport mechanism. The members picked up in the automated warehouse are mounted on a trolley, transported horizontally by this trolley and carried in to the bottom of the main building, where they are transferred to an elevator attached to the main building, where they are lifted by the elevator to the upper building. It is brought into the assembly plant.

A long member such as a beam, a pillar, or a PC floor plate is transported in a single package or a plurality of packages. In general,
The long members are mounted on a carriage in a stable horizontal stacking state and transported in the horizontal direction. In order to transfer the vertically stacked long members to the elevator for vertical transportation, the posture is inverted to the vertically stacked state so that the long members do not interfere with the building structure. The long members are loaded into the building assembly factory while being vertically stacked in the elevator. Long members on the elevator are loaded and unloaded by an overhead crane in a building assembly plant, and are temporarily placed in a predetermined loading place. At this time, since the long member is unstable when placed vertically, it is better to place it horizontally horizontally. Therefore, when the long members vertically stacked in the elevator are unloaded at the loading place, the posture is turned from the vertical position to the horizontal position.

[0007]

In order to increase the automation rate of the above-mentioned building construction system and bring it closer to full automation, it is important to automate the transfer mechanism of various members from the automatic warehouse to the building assembly factory. .. Conventionally, the unloading work of loading and unloading the long members that have been vertically stacked in the elevator and transported to the building assembly factory as described above, and horizontally loading them horizontally at a predetermined loading place has been automated. Instead, manual assistance was required when horizontally placing long members that were unloaded vertically from an elevator by an overhead crane.

The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to unload long members conveyed in a vertically stacked state by using an overhead crane and place them horizontally at a predetermined position. It is an object of the present invention to provide a method for unloading a long member that can be easily automated.

[0009]

Therefore, in the present invention, the upper end side of the long members that have been vertically stacked and conveyed is engaged with the suspension wire of the overhead crane so that the long members are vertically suspended. To the upper end side of the elongated member in the engaged state by engaging the stopper engaging portion previously attached to the elongated member with the stopper previously installed in the load storage area. The suspension wire is unwound while being horizontally moved by the crane, and the long member is horizontally turned around the engagement point so as to be horizontally placed in the loading place.

[0010]

[Operation] The long members vertically stacked and conveyed by one overhead crane are vertically suspended, and the long members are horizontally moved toward the loading place, and the stopper and the stopper are placed at the loading place. By engaging the engaging portion, the long member in the vertically suspended state can be horizontally turned and horizontally placed by operating only one crane.

[0011]

EXAMPLES First, a concrete example of a long member to be conveyed will be described with reference to FIGS. The elongate member 1 of this embodiment is a package integrated by combining two PC floor boards 2 such that they face each other. The PC floor board 2 has three parallel ribs on one side in the longitudinal direction. The two PC floor plates 2 are assembled with the ribs facing each other. At this time, the two package core members 3a and 3b are sandwiched between the PC floor plates 2.

The package core materials 3a and 3b are mainly made of square steel pipes and are longer than the width dimension of the PC floor board 2. The core members 3a and 3b are arranged orthogonally to the longitudinal direction of the PC floor plate 2 (width direction), but the two core members 3a and 3b are arranged at predetermined positions (described later) near both ends of the PC floor plate 2. There is a large gap between the core materials 3a and 3b. Arms 4a and 4b for stabilizing the core material are provided at predetermined positions of the core materials 3a and 3b. By sandwiching the arms 4a and 4b between two PC floor plates 2, the core materials 3a and 3b are connected to the PC floor board. It does not rotate between the two.

When the core members 3a and 3b are sandwiched between the two PC floor plates 2 at regular positions, the through holes previously formed in the PC floor plate 2 and the through holes 13 of the core members 3a and 3b are aligned with each other.
The eyebolt 8 is passed through these through holes, a clamp device 9 is attached to one end of the eyebolt 8, and the two PC floor plates 2 are fastened together by the clamp device 9 with the core materials 3a and 3b sandwiched therebetween. This is the basis of the package structure of the long member 1.

Both end portions of the core members 3a, 3b are projected from both side portions of the PC floor plate 2 by an appropriate length, and plate-like operation members 5a, 5b are fixed to the protruding ends by welding.
Engagement holes 6a, 6b are formed in the operation members 5a, 5b to engage with an automatic clamp device for a crane suspension wire. Further, a hook-shaped stopper engaging portion 7 used when shifting from the vertical position to the horizontal position is formed on the one operation member 5b.

A contact plate 11 is joined to the lower surface side of one of the PC floor plates 2 at an approximately intermediate position between the core members 3a and 3b, and the contact plate 11 is fixed by the eyebolt 8 and the clamp device 9 like the core members 3a and 3b. 11 is fastened to the PC floor board 2. A spacer 10 is sandwiched between both floor plates 2 at this fastening position. A hook 12 for preventing tipping when vertically stacking the long members 1 is fixed to the contact plate 11 by welding.

An operation procedure for unloading the long member 1 packaged with the above structure by the method of the present invention will be described with reference to FIGS. 5 and 6.

In FIG. 5, reference numeral 50 denotes an elevator that vertically conveys the long members 1 in a vertically stacked state, in a state where the vertical position fall prevention hook 12 of the long members 1 is hooked on a stopper 51 of the elevator 50. The long members 1 are vertically stacked on the elevator 50. The state of FIG. 5 is the elevator 50.
Has reached the top and the long member 1 has been loaded into the building assembly plant, where the floor surface of the elevator 50 is the work floor in the building assembly plant (the top of the main building under construction).
Is consistent with.

The elevator 50 that has reached the building construction factory is stopped, and the suspension wire 53 of the overhead crane 52 in the factory is lowered toward the long member 1 vertically stacked therein,
The automatic clamp device provided at the lowermost part of the hanging wire 53 is engaged with the operation member 5a on the upper end side of the elongated member 1, and the pin of the clamp device is automatically inserted into the engagement hole 6a.
Then, if the hanging wire 53 is slightly wound up, the long member 1
Rises in a vertically suspended state, and the vertical position fall prevention hook 12 is disengaged from the stopper 51 of the elevator 50. In this state, the elevator 50 descends. After this, the overhead crane 52
Is moved from the position (a) to the direction (b), and the long member 1 in the vertically suspended state is horizontally moved toward the loading place 55.

As shown in the figure, when the elongated member 1 is vertically suspended with the operating member 5a as a fulcrum, the other operating member 5b is located near the lower end of the elongated member 1 and is provided integrally with the operating member 5b. A hook-shaped portion of a stopper engaging portion 7 faces forward in the traveling direction. At the forefront (left end) of the loading place 55, the long member 1 that is horizontally transported in a vertically suspended state.
The stopper pin 54 is attached to a position where the stopper pin 54 is caught by the hook-shaped portion of the stopper engaging portion 7.

Therefore, when the elongated member 1 is further horizontally conveyed from the state shown in FIG. 5, the stopper engaging portion 7 of the elongated member 1 is caught by the stopper pin 54 of the load storage area 55. After that, as shown in FIG. 6, the hanging wire 53 is paid out at an appropriate speed while gradually moving the crane 52 to the right. Then, as shown in FIGS. 6A and 6B, the long member 1 turns clockwise around the stopper pin 54, and finally becomes horizontal as shown in FIG. 6C and is placed on the loading place 55. To be done. Here, the automatic clamp device at the lower end of the suspension wire 53 is operated to remove the suspension wire 53 from the operation member 5a. This completes the unloading work of the long member 1 from the elevator 50 to the loading place 55.

[0021]

As has been described in detail above, according to the present invention, it is necessary to appropriately control the traveling of one overhead crane and the feeding of the suspension wire, and the long sheet conveyed in the vertically stacked state is conveyed. It is possible to unload the members in a vertically suspended state and horizontally move them to the loading place while horizontally moving them to the loading place for temporary placement. This work does not require manual assistance and can be easily automated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a specific example of a long member which is an object of transportation / reloading according to the present invention.

FIG. 2 is a plan view of the above long member.

FIG. 3 is a front view of the above long member.

FIG. 4 is a side view of the same elongated member.

FIG. 5 is a first working procedure diagram showing a method for unloading a long member according to the present invention.

FIG. 6 is a second work procedure diagram of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Long member 5a, 5b Operation member 7 Stopper engaging part 12 Vertical position fall prevention hook 50 Elevator 51 Stopper 52 Crane 53 Suspending wire 54 Stopper pin 55 Loading place

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Ikeda 2-3 Kandajimachi, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office

Claims (1)

[Claims] 1. An upper end side of long members that have been vertically stacked and conveyed is engaged with a hanging wire of an overhead crane to horizontally move the long members in a vertically suspended state toward a loading place,
By engaging a stopper engaging portion previously attached to the elongated member with a stopper previously installed in the cargo storage area,
In the engaged state, the hanging wire is paid out while horizontally moving the upper end side of the long member by the crane, and the long member is horizontally turned around the engagement point to be laterally placed in the cargo storage area. A method for unloading a long member, characterized by placing the member.