JP2000303694A - Frame and method for unloading members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and promptly unload members from a member carrying vehicle in the construction field where a mobile crane means cannot enter, by using a temporary member unloading frame which is made up of a hoist machine for hoisting a beam and members, and a diagonal member. SOLUTION: A beam 1 is externally protruded from an external scaffolding 4 so as to be rotated on a vertical axis, at a side edge of the external scaffolding 4. The beam 1 houses therein a trolley in a movable manner, and a hoist machine 2 is linked to the trolley, whereby the hoist machine 2 is moved along the beam 1 together with the trolley. A round steel diagonal member 3 is stretched between a free end, i.e., an external end, of the beam and a standing pole 4. The lower end of the diagonal member 3 is connected to the external end of the beam 1, and the upper end of the diagonal member 3 is connected to the standing pole 41 by pin joint, whereby the diagonal member 3 can be rotated on the vertical axis at the side edge of the external scaffolding 4 together with the beam 1. Thus, unloading of members from a member carrying vehicle or movement of the hoisted members from an upper location can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame temporarily installed at a construction site of a building and used for unloading members from a member carrier, and a member carrier using the member unloading frame. And a method of unloading a member from a vehicle.

[0002]

2. Description of the Related Art Conventionally, at a construction site of a building, a mobile lifting means such as a crane truck is generally used to unload a member from a member carrier such as a truck. Have been. However, depending on the site, the mobile lifting means as described above may not be able to enter the vicinity of the site. In such a case, there is no other way than to unload the members from the member transporter by human power, so that much work and time are required for the operation. For a member constituting a building, for example, a beam made of shaped steel has a single item weight of 100.
Most of them have a large weight, such as over kg, and if they are to be unloaded manually, the physical burden on the worker becomes very large, and the members must be unloaded one by one. Work time is lengthened. Furthermore, if the unloading operation requires a long time, the occupation time of the road by the member transporter becomes longer, which may cause a traffic obstacle.

In view of the above, the present invention has been made in consideration of the above circumstances, and has been made in view of the above-described problems. Accordingly, even at a construction site where mobile lifting means cannot enter, a member unloading member can be easily and quickly unloaded from a member carrier. It is an object of the present invention to provide means and a member unloading method.

[0004]

According to a first aspect of the present invention, there is provided a member unloading frame for unloading a member from a member carrier at a building construction site. A temporary member unloading frame for
A beam protruding outward from the temporary structure at the construction site, a hoisting machine arranged on the beam to lift a member, and an outer end of the beam and an upper part of the temporary structure. And a diagonal member installed between them.

According to a second aspect of the present invention, there is provided a member unloading frame according to the first aspect, wherein the beam and the diagonal member are provided at an end of the temporary structure. And is joined to the temporary structure so as to be rotatable about a vertical axis.

According to a third aspect of the present invention, there is provided a member unloading frame according to the first or second aspect, wherein the hoist moves along a beam. It is characterized by being provided to obtain.

According to a fourth aspect of the present invention, there is provided a member unloading method for unloading a member from a member carrier at a building construction site. A first step of arranging a beam of a member unloading frame at a position above the member transporter, and a second step of lifting a member loaded on the member transporter by a beam hoist.
And a third step of moving the member from a position above the member carrier and lowering the member at the construction site.

According to a fifth aspect of the present invention, there is provided a member unloading method according to the fourth aspect, wherein the beam and the diagonal member are rotated in the third stroke. The member is moved in the horizontal direction, and then the member is lowered to the construction site.

In the member unloading method according to a sixth aspect of the present invention, in the member unloading method according to the fourth aspect, the hoisting machine is moved along the beam in the third step. The member is moved to the temporary structure side, and then the member is lowered to a construction site.

According to a seventh aspect of the present invention, there is provided a member unloading method according to the fourth aspect, wherein the hoist is moved along the beam in the third step. The beam and the diagonal member are moved horizontally by rotating the beam and the diagonal member, and then the member is lowered to a construction site.

In the present invention, the term "temporary structure at a construction site" means a structure temporarily constructed at a construction site and capable of supporting at least a part of a load caused by beams and diagonal members. For example, a scaffold temporarily provided at the construction site or a structure such as a tower or a column which is provided separately from the scaffold is included.

The term "winding machine" broadly refers to a device capable of lifting a member, regardless of whether it is an electric type or a manual type, and includes, for example, winches, hoists, and chain blocks. Shall be.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be exemplified and specifically described with reference to the drawings. 1 and 2
1 shows a member unloading frame according to an embodiment of the present invention. The member unloading frame F1 shown in FIG. 1 includes a beam 1, a hoist 2, and a diagonal member 3.

The frame F1 for unloading members is attached to an external scaffold 4 temporarily provided at a construction site of a building. The external scaffold 4 is a main scaffold composed of a single pipe, and as shown in FIG. It is assembled in a U-shape as viewed from above. Both side portions of the external scaffold 4 extend to near the front end (front road R side end) of the site L of the construction site.

As shown in FIG. 1, an overhead crane 5 is installed above the external scaffold 4. The overhead crane 5 is basically the same as that disclosed in Japanese Patent Application No. 11-21198, and is constructed so that two parallel side rails 51 and two side rails 51 are orthogonal to each other. And a girder rail 52 which is provided with a winch 53 for lifting members.
(Note that FIG. 1 shows only the configuration at one end of the girder rail 52, but the configuration at the other end is also the same). Brackets 42 extending toward the building space S are respectively provided at the upper ends of the plurality of buildings 41 in the external scaffold 4. Multiple locations are supported. Thereby, the side rail 51 is erected along the row direction. The side rail 51 is provided so as to slightly protrude in front of the external scaffold 4 (toward the front road R).

Each of the side rails 51 and the girder rails 52 is formed of a hollow metal (aluminum, iron, or the like) whose lower surface is partially opened in a slit shape. (Not shown) is accommodated so that it can run freely, and both ends are closed by end members (not shown). Both ends of the girder rail 52 are connected to a trolley in the side rail 51, and the winch 53 is connected to a trolley in the girder rail 52. Thus, the girder rail 52 can be freely moved along the length direction of the side rail 51, and the winch 53 is connected to the girder rail 5
2 is movable along the length direction.

According to the overhead crane 5, the members can be transported to an arbitrary position in the building space S, so that the building can be efficiently constructed while lifting the members. Furthermore, the above-mentioned overhead crane 5
Since it is a site-completed type, it is particularly useful in a site where mobile lifting means cannot enter, and has advantages such as being easily installed using a scaffold.

As shown in FIG. 1, a member 41 located at the front end of the plurality of buildings 41 arranged along one side of the building space S on the external scaffold 4 has a member unloading structure. The beam 1 of the bridge frame F1 is joined. The beam 1 is made of the same member as the girder rail 52 of the overhead crane 5 and has a trolley (not shown) inside.
Are movably accommodated. A hoist 2 is connected to the trolley so that it can move along the beam 1 with the trolley. The hoist 2 is a winch similar to the winch 53 of the girder rail 52.

One end of the beam 1 is pin-joined to the building 41 via a clamp 6 having a hinge, and as shown by an arrow A1 in FIG. Can be rotated about an axis extending along the center. That is, the beam 1 is protruded outward from the external scaffold 4 so as to be able to rotate around a vertical axis at the end of the external scaffold 4 side.

The beam 1 extends horizontally to the outer edge of the front road R, that is, to the vicinity of the edge farther from the site L of the construction site. In addition, the beam 1
And the hoisting machine 2 is erected at such a height that the hoisting machine 2 can move without contacting a member carrier (not shown in FIG. 1) in a state where the members are loaded. Have been. Thereby, the beam 1 can be arranged at a position above the member carrier stopped on the front road R (that is, a position where the beam can be unloaded).

Between the free end of the beam 1, that is, the outer end, and the upper end of the building 41, a diagonal member 3 made of round steel is erected. The part is supported on the upper part of the external scaffold 4. The lower end of the diagonal member 3 is joined to the outer end of the beam 1, and the upper end is pinned to the building 41 as in the case of the beam 1, whereby the diagonal member 3 is joined together with the beam 1. The outer scaffold 4 is configured to be rotatable around a vertical axis at its end.
As described above, the diagonal member 3 is erected between the outer end of the beam 1 and the upper part of the external scaffold 4 to form a right-angled triangular frame structure having the beam 1 as a base. The beam 1 is stably supported by the external scaffold 4.

A turnbuckle cylinder 31 is provided at an intermediate portion of the diagonal member 3 so that the length of the diagonal member 3 can be adjusted and tensioned as required.

The procedure for unloading the members using the member unloading frame F1 will be described below.

1. Arrangement Step (First Step) First, as shown in FIG. 3, the beam 1 of the member unloading frame F1 is arranged at a position above the member carrier T.

At this time, the member carrier T is connected to the front road R
After stopping above, the beam 1 is turned to rotate the member carrier T
, Or the beam 1 is rotated and arranged on the front road R, and then the member carrier T enters the position below the beam 1 and stops. .

2. Lifting Stroke (Second Stroke) Next, as shown in FIG. 4, the member M loaded on the member transporter T is lifted by the hoist 2 of the beam 1.

At this time, the members M are previously slung collectively on the member transport vehicle T, and all the stacked members M are lifted collectively by one lifting.

3. Member moving stroke (third stroke) Thereafter, as shown in FIGS. 5A and 5B, the member M
Is moved from a position above the member carrier T and is lowered to the construction site.

At this time, as shown by an arrow A3 in FIG. 5A, the hoist 2 is moved to the external scaffold 4 along the beam 1, and then, an arrow A4 in FIG. As shown by the arrow, the beam 1 and the diagonal member 3 are rotated to
The member M may be moved horizontally to the side, and then the member M may be lowered to the construction site. According to this, since the beam 1 is rotated in a state where the member M is moved to a position close to the rotation axis of the beam 1, the load applied to the free end side of the beam 1 becomes small, and the beam is accordingly reduced. 1 can be rotated with a small force.

At this time, before the member M suspended above the member carrier T is moved in the horizontal direction, the member carrier T is first moved from a position below the beam 1 to another place. If you keep it, later work will be easier.

The member M can be unloaded from the member carrier T by the first to third steps described above. The member M
Are temporarily placed in front of the building space S on the site L, and the building is constructed by lifting the members one by one by the overhead crane 5. As mentioned above, the external scaffold 4
Extends to the vicinity of the front end of the site L, and the side rail 51 of the overhead crane 5 is erected so as to protrude slightly in front of the external scaffold 4. Can be lifted from directly above by the overhead crane 5.

As described above, the member unloading frame F1
A beam 1 protruding outward from an external scaffold 4 temporarily provided at a construction site, a hoisting machine 2 disposed on the beam 1 to lift a member M, and an outer end of the beam 1 And the upper part of the external scaffold 4 and the diagonal member 3, so that the mobile unloading means such as a crane truck cannot enter by using the member unloading frame F1. Even at a simple construction site, it is possible to easily and quickly unload the member M from the member transport vehicle T without resorting to manual unloading work.

That is, the beam 1 of the member unloading frame F1 is arranged at a position above the member carrier T (first stroke),
Next, the member M loaded on the member transporter T is lifted by the hoisting machine 2 for the beam 1 (second stroke). Thereafter, the member M is moved from a position above the member transporter T. By dropping it to the construction site (3rd stroke)
The unloading of the member M from the member transport vehicle T can be performed easily and quickly.

Further, in the member loading / unloading frame F1, the beam 1 and the diagonal member 3 are rotated so that the beam 1 and the diagonal member 3 can rotate around a vertical axis at the end of the frame 4 on the side of the external scaffold 4.
Since the beam 1 and the diagonal member 3 rotate, the beam 1 can be easily arranged at a position above the member carrier T in the first stroke, and the beam 1 and the diagonal member 3 can be easily arranged in the third stroke. The member M can be easily moved from a position above the member carrier T.

Further, since the hoisting machine 2 is provided so as to be movable along the beam 1, the moving operation of the hoisting machine 2 causes the member M to move the member M in the third stroke. Can be easily moved from a position above the.

Further, the frame F1 for unloading members has a simple structure as a whole with a small number of components.
In addition, it can be easily installed using the external scaffold 4. Further, the same components as those of the overhead crane 5 can be used as the beam 1 and the hoisting machine 2.

Furthermore, the length of the beam 1 is set to be short enough to allow the beam 1 to be disposed above the member carrier T at a position where the beam can be unloaded, and its span is reduced. As a result, the weight that can be lifted is large, so that a large number of members can be lifted at one time by one lifting. In the example shown here, as described above, the same rail material as the girder rail 52 of the overhead crane 5 is used as the beam 1, but the girder rail 52 of the overhead crane 5 has a length of, for example, about 10 m. If used, the girder rail 5
The maximum weight that can be lifted by 2 is about 250 kg.
On the other hand, when the beam 1 is used with a length of, for example, about 3 m, the maximum weight that can be lifted by the beam 1 is about 1 t. As described above, the weight per member is, for example, about 100 kg. Therefore, according to the beam 1, the members M loaded on the member transport vehicle T can be lifted to some extent collectively instead of one by one. it can. Further, in this case, if the total weight of the members M is about 1 t or less, all the stacked members M can be lifted at once by one lifting.

Various modifications can be made to the embodiment exemplified above. For example, like the member unloading frame F2 shown in FIG. 6, the beam 1 may be used without being rotated and fixed at the use position. In this case, in the member moving stroke (third stroke), the hoist 2 is moved along the beam 1 to the external scaffold 4 as shown by an arrow A5 in FIG. The beam 1 is lowered below the end of the external scaffold 4. Further, in this case, the member unloading frame F2 may be attached to and detached from the building 41 of the external scaffold 4 before and after the unloading operation.

According to the embodiment shown in FIG. 6, there is no need to pin-join the beam 1 or the diagonal member 3 to the building 41, and the details can be simplified accordingly.

Alternatively, for example, as in a member unloading frame F3 shown in FIG. 7, the hoisting machine 2 is not moved along the beam 1, but is fixed to a position where it can be arranged above the member carrier. It may be configured to be used as it is. In this case, in the member moving stroke (third stroke), the beam M and the diagonal member 3 are rotated to move the member M in the horizontal direction, as shown by an arrow A6 in FIG. To the construction site.

According to the embodiment shown in FIG. 7, it is not necessary to use a rail as the beam 1, and the configuration can be simplified accordingly.

Further, for example, an appropriate tower or column may be erected separately from the external scaffold 4 and may be used as a temporary structure to support a part of the beam 1 ( Not shown). According to this, the member unloading frame can be provided at an arbitrary position.

Further, for example, a chain block or the like may be used as the hoisting machine 2, whereby the installation cost of the member unloading frame can be reduced.

As the diagonal member 3, any wire or bar such as a wire rope or an angle can be used other than the round steel.

[0045]

As described above, the member unloading frame according to the first aspect of the present invention is provided with a beam projecting outward from a temporary structure at a construction site, and a beam provided on the beam. And a diagonal member installed between the outer end of the beam and the upper part of the temporary structure, so that the member unloading frame is used. Accordingly, even at a construction site where mobile lifting means such as a crane truck cannot enter, it is possible to easily and quickly unload members from the member transporter without using a manual unloading operation.

Further, since the beam can be so short that it can be arranged above the member carrier at a position where it can be unloaded, the span of the beam can be reduced. can do. For this reason, the liftable weight can be increased as compared with the case where the beam is made of the same material and is long, so that a large number of members can be lifted at one time by one lifting. . Therefore, as compared with the case where members are lifted one by one from the member transporter, the work efficiency can be greatly improved, the time occupied by the member transporter on the road is significantly reduced, and traffic obstacles are less likely to occur.

In addition, according to the member unloading frame according to the second aspect of the present invention, the beam and the diagonal member rotate around the vertical axis at the end of the temporary structure. Since the beam and the diagonal member are rotated so as to obtain the beam, the beam can be easily arranged at a position above the member carrier, and the member lifted from the member carrier can be obtained. Can be easily moved from a position above the member carrier.

[0048] In addition, according to the member unloading frame according to the third aspect of the present invention, the hoist is provided so as to be movable along the beam. By the moving operation, the member lifted from the member carrier can be easily moved from a position above the member carrier.

According to a fourth aspect of the present invention, there is provided a member unloading method, wherein the beam of the member unloading frame according to any one of the first to third aspects is arranged at a position above the member transport vehicle. 1
A second step of lifting the members loaded on the member transporter by the beam hoist; and a third step of moving the members from a position above the member transporter and lowering the members on the construction site. Therefore, the member can be easily and quickly unloaded from the member carrier.

In addition, according to the member unloading method according to the fifth aspect of the present invention, in the third step, the beam and the diagonal member are rotated to move the member in the horizontal direction. Since the member is later lowered to the construction site, the member can be easily moved from a position above the member carrier by the turning operation of the beam and the diagonal member.

Further, according to the member unloading method according to claim 6 of the present invention, in the third step, the hoist is moved along the beam to the temporary structure side,
Thereafter, the member is lowered to the construction site, so that the member can be easily moved from a position above the member carrier by the moving operation of the hoisting machine.

Further, according to the member unloading method according to claim 7 of the present invention, in the third step, the hoist is moved along the beam to the temporary structure side,
Next, the beam and the diagonal member are rotated to move in the horizontal direction, and thereafter, the member is lowered to the construction site. Therefore, the member is moved to a position close to the rotation axis of the beam. Therefore, the load applied to the free end side of the beam is reduced, and the beam can be rotated with a correspondingly small force.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a member unloading frame according to an embodiment.

FIG. 2 is a schematic plan view of FIG.

FIG. 3 is a schematic diagram showing an arrangement process (first process) in the member unloading method according to the embodiment.

FIG. 4 is a schematic diagram showing a lifting process (second stroke) in the member unloading method according to the embodiment.

FIG. 5 is a schematic diagram showing a member moving process (third process) in the member unloading method according to the embodiment.

FIG. 6 is a perspective view showing a member unloading frame according to another embodiment.

FIG. 7 is a perspective view showing a member unloading frame according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam 2 Hoist 3 Diagonal material 4 External scaffold (temporary structure) F1 Frame for unloading members

Claims (7)

[Claims] Claims: 1. A member unloading frame temporarily provided for unloading a member from a member carrier at a construction site of a building, the frame being protruded outward from a temporary structure at the construction site. Beam, a hoisting machine arranged on the beam to lift a member, and a diagonal member installed between an outer end of the beam and an upper part of the temporary structure, For unloading components. 2. The temporary structure according to claim 1, wherein the beam and the diagonal member are joined to the temporary structure so as to be rotatable around a vertical axis at a side end of the temporary structure. A frame for unloading members as described in the above. 3. The frame for unloading members according to claim 1, wherein the hoist is provided so as to be movable along a beam. 4. A method for unloading a member from a member carrier at a construction site of a building, wherein the beam of the member unloading frame according to claim 1 is disposed above the member carrier. A second step of lifting a member loaded on the member transporter by the beam hoist; and moving the member from a position above the member transporter to the construction site. And a third step of unloading the member. 5. The member according to claim 4, wherein, in the third step, the member is moved in a horizontal direction by rotating the beam and the diagonal member, and thereafter, the member is lowered to a construction site. Unloading method. 6. The member according to claim 4, wherein, in the third step, the hoist is moved along the beam to the temporary structure, and then the member is lowered to a construction site. Unloading method. 7. In the third step, the hoist is moved along the beam to the temporary structure side, and then the beam and the diagonal member are rotated to move in the horizontal direction. The member unloading method according to claim 4, wherein the member is unloaded to a construction site.