JP2605238B2 - How to build a truss tower for the stage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a truss-like tower for a stage in which a truss structure for hanging stage equipment such as lighting equipment and stage sets is erected at a place where the stage is installed.

[0002]

2. Description of the Related Art As a venue for rock concerts, sports performances, and the like, which can attract a large number of spectators, large facilities such as an indoor stadium, a gymnasium, a martial arts hall, an open space, and an outdoor stadium are used. However, these large facilities and the like were not designed as performances or performances from the beginning, or there was no stage, so the necessary stage was built at the venue as needed. After the stage frame was constructed, the stage was constructed by attaching stage equipment such as lighting equipment and stage sets to the cross beams on the stage. In addition, it is required that these operations be performed in a short time due to a request for rehearsal and practice time.

Conventionally, in order to construct a stage, a plurality of truss structures, for example, four truss structures are arranged around the stage in accordance with the scale of the stage, and these are erected to form a truss pillar. Between the truss pillars, a truss structure is also combined, and a cross beam member is erected and constructed. The stage was completed by suspending stage equipment such as lighting equipment and stage sets on the cross beam members in accordance with the concert.

[0004]

For example, on a performance stage such as a rock concert, a large venue and stage equipment such as lighting equipment and a stage set are important elements for enhancing the performance effect. Particularly recently, the development of stage equipment, especially lighting equipment, has been remarkable, and these equipment has also become high-performance and large in size. In a performance stage such as a rock concert, the lighting equipment and the stage set have a great influence on the performance of the performance. Therefore, the higher the lighting equipment or stage set is, for example, 10 to 15 m, the better.

[0005] The truss structure on which the stage equipment such as the lighting equipment and the stage set is erected needs to have a certain degree of strength, and the truss pillars that stand on the ground must be not affected by rain and wind. In addition, multiple truss structures must be built on the large stage. It takes a lot of work to assemble multiple heavy truss structures on the stage in a short time. However, when constructing the stage, the truss pillars have been mostly assembled by hand. In addition, the stage must be constructed as quickly and as possible to ensure the time for rehearsals of the performers and inspection of various equipment. Was to be done. For this reason, the construction of a stage in a short time became a big job, the work efficiency was low, and the danger was high.

[0006] Further, when a horizontal member on which a stage device such as a lighting fixture or a stage set is hung after the truss pillar is set up, an electric winch is mounted on the upper end of the horizontal member, so that only that portion is placed sideways. The bridge member cannot rise. In other words, this is contrary to a demand for taking up space on the ceiling and installing the horizontal member as high as possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a truss structure that is mechanically erected and a horizontal member is raised to the tip of a truss column to efficiently construct a stage. It is an object to provide a truss-like tower construction method.

[0008]

According to the present invention, there is provided a method for constructing a truss-like tower for a stage, in which a rectangular parallelepiped base member having a rectangular cross section is installed on the floor or the ground, and the base member has the same cross section as the base member. A step of fitting a vertically movable sliding frame to the base member when the stage is constructed by erecting the pillars; and a foot on one side of the pillar and one of the base members. Abutting the heads on the other side and pivoting the head with the head as a fulcrum; and extending the rear upper side of the sliding frame on the other foot side of the base member, and attaching a pulley to the top thereof. Disposing a stepladder-type structure, temporarily mounting two legs on both sides of the structure to one foot of the base member, and temporarily mounting a center leg on an upper rear surface of the sliding frame; And temporarily fixing one end of the traction member near the pivot axis of the pillar, and connecting the other end of the traction member to the leg. A step of attaching the traction member to the electric winch installed on the side foot of the sliding frame through a pulley at the tip of the step-shaped structure from a pulley arranged on the top of the body, and turning the traction member. A step of pulling one end of the pulling member by driving the electric winch to raise the pillar, and a foot on the other side of the pillar and the other side of the base member which are erected in the raising step. And butting the heads together.

[0009]

According to the present invention, a stepladder-like structure is temporarily attached to a base member and a sliding frame fitted to the base member, and the traction member is used to pivot the pillar and the structure. Thus, the pillar can be erected on the base member by hooking on the electric wint and towing the towing member with the electric winch.

[0010] Further, since the electric winch is provided on the side surface of the sliding frame, the cross beam member is raised to the tip of the pillar.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing one embodiment.

FIG. 1 is an overall configuration diagram of an embodiment of a stage constructed by a method of constructing a truss-like tower for a stage according to the present invention;
FIG. 2 is a perspective view showing an embodiment of a method for constructing a truss-like tower for a stage according to the present invention. FIG. 3 is a front view of a pillar of the method for constructing a truss-like tower for a stage according to the present invention. FIG.
FIG. 5 is a front view of the post-standing structure shown in FIG. 3, FIG. 5 is a top view of the standing structure, FIG. 6 is an enlarged explanatory view of a pivotal connection of one head connected to one foot, and FIG. FIG. 8 is an enlarged explanatory view of the mounting portion of the structure, FIG. 8 is a front view of the stage construction showing the state before the cross beam member is raised, and FIG. 9 is a front view of the stage construction showing the state after the elevation in FIG.

In these figures, reference numeral 1 denotes a rectangular parallelepiped base member installed on the floor surface or the ground surface 20. A base 21 is attached to a lower portion of the base member 1 and is installed on the floor or the ground. A sliding frame 2 for vertically moving a base member 1 and a pillar 4 described later is fitted to the base member 1. The sliding frame 2 moves up and down with wheels mounted on the inside thereof along the columns of the base member 1 and the pillars 4. A transverse beam member 8 composed of a truss structure is fixed to the sliding frame 2 in one direction or two or three directions on the lateral side, and an electric winch 10 is provided on one side surface. Reference numeral 4 denotes a pillar that stands on the base member 1 and has the same cross section as the base member 1. A support plate 3 having pulleys 3a on both sides is fixed to the top of the pillar 4. This pillar 4 can be raised by connecting a plurality of truss structures, and can be extended to a height of, for example, about 10 to 15 m. Reference numeral 5 denotes a structure 5 in which three support rods 5a, 5a, and 5b are formed in a stepladder shape, and a pulley 5d is mounted on the top of the support rods. Reference numeral 7 denotes a traction member formed of a metal chain. In FIG. 1, reference numeral 10 denotes an electric winch provided on a side surface of the sliding frame 2, which is hooked on one end of a pulling member 7 and pulled.

As shown in FIGS. 2 to 4, in order to construct a stage, the base 21 of the rectangular parallelepiped base members 1 and 1 is opposed to the floor surface or the ground 20, for example, at four places or two places.
Installed in two places. A sliding frame 2 that can move up and down is fitted to the base member 1. Each of the opposed sliding frames 2, 2
A transverse beam member 8 composed of a truss structure is fixed between the sliding frame members 2.

A foot 4a, 4a on one side of a pillar 4 provided with a pulley 3a via a support plate 3 on the upper part and having a cross section identical to that of the base member 1 and having the same cross section as the base member 1 is attached to the base member. 1 and the heads 1a, 1a. The bolts 12 penetrate the foot portions 4a, 4a on one side of the butted pillar 4 to the heads 1a, 1a on one side of the base member 1, respectively. Then, the pillar 4 is vertically rotatably connected. One end 7a of the traction member 7 is locked at an arbitrary position below the pillar 4 with a fastener (not shown), and the other end 7b of the traction member 7 is disposed on the top of the pillar 4. The pulley 3a thus formed and the pulley 5d at the tip of the structure 5 are turned to be locked on the electric winch 10. This electric winch 10
, The traction member 7 is pulled, and the pillar 4 stands on the base member 1.

In this case, when the pedestal 4 having the same cross section as the base 1 is to be erected on the base 1, the pedestal 4 is first placed on the cross beam 8 fixed to the side surface of the sliding frame 2. Body 4
Is placed, and its feet 4 a, 4 a are brought close to the sliding frame body 2 and are placed against the head of the base member 1. The legs 4a, 4a of the pillar 4 on the sliding frame 2 side (one side) are connected to the sliding frame 2
Heads 1a, 1a of the base member 1 on the side (one side) close to
Are connected to each other so that the bolts 12 can be penetrated and used as a pivot shaft. The sliding frame 2 extends rearward with respect to the pillar 4, and its tip is temporarily attached.

That is, the support rods 5a, 5a are connected to the feet 4a,
4a and the heads 1a, 1a are arranged outside the pivotal joint, the structure 5 is made to have a series of axes, and the bolt 12 is pushed out to
To fit. On the other hand, the support bar 5b is temporarily attached to the upper edge 2a of the sliding frame 2.

A traction member 7 is provided at an arbitrary position at the lower end of the pillar 4.
Is fixed, and the other end is wound around the electric winch 10 installed near the base of the sliding frame 2 from the pulley 3a of the pillar 4 via the pulley at the tip of the structure 5, and in this state, the electric winch is When the traction member 7 is driven by driving the traction member 7, the pedestal 4
Is pivoted about the pivot 12 to raise the pillar 4 on the base member 1. Foot 4b on the other side of pillar 4
And the head 1b on the other side of the base member 1 with bolts (not shown)
Fix with.

When the electric winch 10 is driven in this manner, the pulling member 7 is pulled, and as shown in FIG. It stands on the upper part of the foundation member 1 and stops. After the pillar 4 stands, the structure 5 is pulled, the bolt 12 is aligned with the shaft 5f, the bolt 12 is pressed, and the support rods 5a, 5a are removed from the pivot portion. Further, the support rod 5b is detached from the sliding frame body 2 and removed.

FIG. 5 shows an example of a stepladder-type structure 5. Three support rods 5a, 5a, 5b are fixed to two forked support rods 5a, 5a at a top 5c. The pulley 5d is attached to the top 5c, and the support rods 5a, 5d
At the lower end of a, mounting portions 5e, 5e are provided.
A support rod 5b is attached to the top 5c below the pulley 5d via a shaft 5f so as to be vertically movable. Support rods 5a, 5a
Is a width that can be attached to the outside of the pillar 4, and the support bar 5b is shorter than the support bars 5a and 5a. Support rod 5b
Are located between the support rods 5a, 5a,
It is configured to be short. In the drawing, 5j and 5k are reinforcing members for reinforcing the support rods 5a and 5a. Reference numeral 5h denotes a mounting portion for the support rod 5b, which is temporarily mounted rotatably on the upper edge on the back surface of the sliding frame 2.

As shown in FIGS. 6 and 7, the mounting portion 5e
When the pivot portion, that is, the foot portion 4a on one side of the pillar 4 and the upper side head portion 1a of the base member 1 are pivoted by the bolt 12, they are attached to the outside thereof. The bolt 12 is elongated, and the head 12a of the bolt is protruded. The mounting portion 5e of the support plate 5 is inserted through the head, and the bolt 12 is attached to the notch 5g. Installation is
The mounting portion 5e is provided with a hole 5x through which the head portion 12a of the bolt 12 is inserted, and the hole 5x is provided with a notch 5g above which receives the bolt shaft 12b. by this,
Mounting and removal of the support rod 5 can be easily performed.

As shown in FIGS. 8 and 9, after the pillar 4 stands on the upper part of the base member 1 and is fixed with bolts, the structure 5 is removed from the pivot shaft and the mounting portion of the sliding frame 2. Then, the traction of the traction member 7 is once loosened to release the lock which has been locked on the lower portion of the pillar 4, and this is locked with a locking tool (not shown) provided on the cross beam member 8. When the electric winch 10 is driven, the traction member 7 is pulled, and as shown in FIGS. 8 to 9, the cross beam member 8 is raised along the pillar 4 by driving the electric winch 10, and the upper end of the pillar 4 is moved. The stage is constructed by stopping at the lower part of the support plate 3.

In this embodiment, an example in which the base members are disposed so as to face each other has been described. However, the base members can be arbitrarily formed simultaneously in the front, rear, left, and right directions.

[0024]

As described above, according to the present invention, a pillar is mechanically mounted on a base member by a triangular structure and a traction member extending above the back surface of the sliding frame by three support rods. Can be erected. The time required to set up the stage is greatly reduced, allowing more rehearsal time. In addition, the work of standing the pillar is extremely safe.

Also, since the electric winch is installed on the side surface of the sliding frame, the cross beam member can be raised to the tip of the pillar, and the cross beam member can be mounted on the pillar without waste. Can be.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a stage constructed by a method of constructing a truss-like tower for a stage according to the present invention.

FIG. 2 is a perspective view of an embodiment of a method of constructing a truss-like tower for a stage according to the present invention.

FIG. 3 is a front view of a truss-like tower construction method for a stage according to the present invention before standing.

FIG. 4 is a front view of the vehicle after standing in FIG. 3;

FIG. 5 is a top view of a stepladder structure.

FIG. 6 is an enlarged explanatory view of a pivot portion.

FIG. 7 is an enlarged explanatory view showing a relationship between mounting portions of the structure.

FIG. 8 is a front view of a stage construction showing a mounting state of a cross beam member.

FIG. 9 is a front view of the stage construction showing a rising state of the horizontal beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base member 2 ... Sliding frame 4 ... Pillar 5 ... Structure 7 ... Traction member

Claims (3)

(57) [Claims] When a stage is constructed by installing a rectangular parallelepiped base member having a rectangular cross section on the floor surface or the ground, and setting up a pillar having the same cross section as the base member on the base member, A step of fitting a vertically movable sliding frame to the member; abutting a foot on one side of the pillar and a head on one side of the base member; and pivoting the head on a fulcrum. A step-like structure extending rearward and upward of the sliding frame body and having a pulley attached to the top thereof is disposed on the other foot side of the base member, and two legs on both sides of the structure are provided. Temporarily mounting the center leg on the upper rear surface of the sliding frame while temporarily mounting the leg on one side of the base member; and attaching one end of the traction member near the pivot axis of the pillar. Temporarily fixed,
The other end of the traction member is attached to an electric winch installed on a side leg of the sliding frame from a pulley provided at the top of the pillar via a pulley at a tip of the step-shaped structure. Pivoting and mounting the towing member; and towing one end of the towing member by driving the electric winch to raise the pillar, and the other side of the pillar which is erected in the raising step. A method of constructing a truss-like tower for a stage, comprising a step of abutting and fixing a foot portion and a head on the other side of the foundation member. 2. An end portion of each of the two legs on both sides of the step-shaped structure is formed with a hole through which a head of a bolt of a pivot shaft is inserted and a cutout portion having the same width as the bolt shaft formed by the hole. The method according to claim 1, wherein the stage is constructed. 3. The method according to claim 1, wherein the traction member is made of a metal chain.