JPH0527769Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is applicable to, for example, air dome baseball stadiums, stadiums, and other covered stadiums, as well as lifting and lowering devices for pedestals on which lighting devices and other equipment are mounted on the ceilings of stadiums. In particular, the present invention relates to a suspension mechanism for a work gondola in a lifting device for a pedestal used for maintenance and inspection of light bulbs in lighting equipment and other operations.

[Conventional technology]

Conventionally, air dome baseball stadiums, stadiums, and other covered stadiums and stadiums (hereinafter referred to as "stadiums, etc.")
The lighting equipment installed in stadiums, etc. often has a large number of floodlights and lighting equipment suspended from the ceiling or walls depending on the purpose of use and competition content at the stadium, etc., and regular maintenance and inspection of electrical wiring and equipment is required. At the same time, measures were taken to ensure that there would be no disruption to the competition due to light bulb disconnections or other malfunctions.

[Problem that the invention attempts to solve]

However, stadiums are themselves large-scale facilities, and lighting devices such as floodlights and lighting fixtures are installed on ceilings and walls that are extremely high above the grounds and floors. Although it is possible to work on lighting equipment suspended from the ceiling close to the wall using a catwalk installed on the wall, maintenance and inspection of many other lighting equipment requires Not only did it require special scaffolding, but it was also dangerous.

In addition, a method for raising and lowering the entire lighting system has been devised, but the entire lighting system is large and extremely heavy, so especially in the case of Air Dome stadiums, excessive wires are needed to suspend the entire lighting system. Frequent lifting and lowering of the entire lighting device under load has a problem in that it has an unfavorable effect on the frame constituting the air dome and the flexible roof made of synthetic resin.

The present invention was devised in view of the above problem, and is based on two
A main wire is lowered, a work gondola is removably hooked to the end of the wire, and the work gondola is hoisted below the lighting equipment, making it possible to carry out maintenance and inspection work on the lighting equipment while aboard the work gondola. In addition, a work gondola in the lifting device is capable of suspending and raising the work gondola in place of the lifting trestle, if desired, to improve workability on the supporting pedestal side and contributing to safety of work on the lighting device. The purpose is to propose a suspension mechanism.

[Means for solving problems]

The working gondola suspension mechanism of the gantry lifting device according to the present invention suspends the gantry, which is equipped with lighting equipment such as a floodlight and other equipment, from a support pedestal that is suspended and fixed on the ceiling so that it can be raised and lowered. The main purpose of this system is to raise and lower a working gondola using wires, and it consists of a support pedestal that is suspended from the ceiling and an elevating pedestal that is suspended from the support pedestal so that it can be raised and lowered. The elevating pedestal is suspended under the support pedestal by multiple wires stretched to the side, and the elevating pedestal is electrically disconnected from the supporting pedestal side and the elevating pedestal side via a connector, and the elevating pedestal is connected to the support pedestal. In the pedestal elevating device that constitutes the elevating guide mechanism, the extending end of the wire for suspending the elevating pedestal is attached to a cylindrical body attached to the elevating pedestal side via a plurality of suspension ropes fixed to the outer periphery. A hook that is inserted through the guide member and has a flange having a diameter larger than the inner diameter of the guide member is fixed to the tip thereof, and the flange prevents the hook from coming off above the guide member, The hook is detached from the elevating pedestal and suspended downward, so that a work gondola can be hooked onto it.

In addition, a connecting member is attached to the extending end of the wire, and a plurality of suspension ropes for hoisting the elevating frame are connected to the extending direction of the connecting member, and at least the upper end side or the lower end side of the hanging rope is connected to the connecting member. By attaching and detaching the intervening connecting ring, it is also possible to configure the connecting cable to be able to be attached to and detached from the connecting member or the elevating frame.

[Effect]

Therefore, when performing maintenance and inspection of lighting equipment and other equipment, if desired, only the wire is lowered by remote control, a working gondola is hooked to the tip of the wire on the ground or floor, and then it is hoisted up. The gondola is hoisted to the lower part of the lighting device, and necessary maintenance and inspection work can be performed on the various equipment of the lighting device while aboard the gondola.

Further, it is also possible to lower the elevating frame itself by remote control using a wire, and similar maintenance and inspection work can be performed on the ground or floor surface.

Furthermore, when lowering the elevating pedestal to perform maintenance and inspection work on the ground, a work gondola can be suspended in place of the elevating pedestal and raised directly below the support pedestal to perform maintenance and inspection work thereon.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a working gondola suspension mechanism in a gantry lifting device according to the present invention will be described below with reference to the drawings.

The gantry elevating device constituting the work gondola suspension mechanism in the gantry elevating device according to the present invention includes a support pedestal 1 that is suspended and fixed to a ceiling surface a or a frame b disposed close to the ceiling surface a; It is composed of an elevating and lowering pedestal 3 that is movable up and down relative to the pedestal 1 and is equipped with a plurality of floodlights, lighting fixtures 2, 2, . . . and other lighting devices. In addition, the lighting devices 2, 2... installed on the elevating pedestal 3 can adjust their respective projection directions depending on the illumination area in the stadium, etc. In this embodiment, the elevating pedestal 3 is The front side 30a of the frame 30 that constitutes
and the rear side 30b are placed in vertical positions, and the illumination area is adjusted and changed by adjusting and changing the projection direction of the upper and lower row lighting fixtures 2, 2... mutually and each lighting fixture 2, 2... individually. It is something that can be expanded.

The support pedestal 1 is suspended from wires c and c fixed to a ceiling surface a or a frame b disposed close to the ceiling surface a at one end side, respectively, at least in two places on the left and right sides thereof, and is raised and lowered on the upper surface or lower surface thereof. Frame 3
The lifting mechanism 4 and the suspension mechanism 5 for suspending and connecting the elevators and the connector 6 for electrical connection with the lifting pedestal 3 as well as the lifting guide mechanism 7 for the lifting pedestal 3 are constructed.

That is, the elevating mechanism 4 is arranged on the upper surface of the approximately central portion of the support frame 1, and includes a pair of left and right drums 4 that are rotationally driven by a brake motor 40 that is configured to generate an electrical or mechanical load in a predetermined rotational direction.
1 and 41, the wires 42 and 42, which are stretched from the left and right drums 41 and 41 in the left and right direction of the support frame 1, are wound up and unwound freely. ,42
is a sheave 4 arranged on the left and right upper edges of the support frame 1.
3 and 43, it hangs downward from the left and right edges of the support pedestal 1, and its ends are further connected to the left and right edges of the elevating pedestal 3. Note that the sheave 43
A slack detection fitting (not shown) for detecting slack in the wire 42 may be attached to the wire.

The suspension mechanism 5 hooks a hanging rod 8 configured on the side of the lifting pedestal 3 and attaches the lifting pedestal 3 to the lower surface of the support pedestal 1.
It is configured with a hook 50 that engages with the hanging rod 8 and a drive device 51 that rotates the hook 50.

The connector 6 also connects the support frame 1 and the support frame 1.
An upper coupler 60 is arranged on the support frame 1 side to electrically disconnect the elevating frame 3 side that moves up and down against the
and a lower coupler 61 arranged on the elevating frame 3 side.

Furthermore, the elevating guide mechanism 7 is for facilitating the latching operation of the support pedestal 1 and the elevating pedestal 3 in response to inclinations and shaking of the two, and includes a funnel-shaped opening facing downward arranged on the support pedestal 1 side. a guide 70 comprising a guide 70, and an elevating frame 3 that faces the guide 70 and performs an insertion/extraction operation toward its funnel-shaped opening.
It is composed of an insertion/extraction pin (not shown) placed upright on the side.

The working gondola suspension mechanism in the gantry lifting device according to the present invention has the working end gondola 9 hooked to the extending end of the wire 42 for suspending the lifting gantry 3;
Or, it is configured so that it can be suspended in a detachable manner, and a cylindrical guide member 91 as shown in FIG. 4 is slidably mounted on the extending end side, and a A hook 92 is fixedly installed. A flange portion 93 having a diameter larger than the inner diameter of the guide member 91 is formed at the upper end of the hook 92.
When the guide member 2 is pulled up above the guide member 91, the collar portion 93 is latched onto the lower end of the guide member 91. Further, the guide member 91 has a structure in which the elevating pedestal 3 is lifted by a plurality of suspension ropes 94, 94 which are fastened and extended on the outer periphery of the guide member 91, and the elevating pedestal 3 is lifted by winding up the wire 42. Not only can it be hung, but it can also be lowered by letting out only the wire 42. In addition, in this example,
Although an example is shown in which two suspension ropes 94, 94 are attached, the guide member 91 is located between the frames 30, 30 that constitute the elevating frame 3, and comes into contact with the frames 30, 30 when it is raised and lowered. If the guide member 91 is located at a position where the guide member 91 is not provided, the number of the guide members and the shape of the guide member 91 are not particularly limited to those of the above embodiment, and the design can be changed as appropriate.

As shown in FIG. 5, the working gondola 9 has approximately the same width as the support pedestal 1 and the elevating pedestal 3. An eye bolt or other hanging device 96 is fixed to the left and right upper ends of the work gondola 9 or to the left and right upper ends 95 of the work gondola 9, and a hook 92 formed at the tip of the wire 42 is attached to the hanger 96. The working gondola 9 can be suspended and raised by hooking the wire 42 and then winding up the wire 42.

FIG. 6 shows another embodiment of a suspension mechanism for a working gondola, in which connecting members 98, 98 are integrally formed with two metal plates spaced apart at an appropriate distance from each other at the tip of a wire 42. is attached, a plurality of suspension ropes 94, 94 are connected to the extension direction sides of the connecting members 98, 98 using bolts 97, 97, and the lower ends of the suspension ropes 94, 94 are connected to an elevating frame. 3 side or the work gondola 9 side, so that it can be hooked on and connected to a hanging tool 96 fixedly installed on the work gondola 9 side. In this embodiment, the suspension ropes 94, 94
A connecting ring 99 is interposed at least on the upper end side or the lower end side of the connecting member 98 or the elevating frame 3.
It can be attached to and detached from a hanger 96 fixed on the side. Then, lower the elevating frame 3,
It is possible to replace the work gondola 9 on the ground and raise it directly below the support frame 1.

Next, the operation of the working gondola suspension mechanism in the gantry lifting device according to the present invention will be explained.

When using the work gondola 9, that is, when performing maintenance inspection or replacing the light bulbs of the lighting equipment 2, 2, etc., only the wire 42 is lowered by remote control.
A hook 92 formed at the tip thereof is hooked onto a hanging tool 96 on the side of the working gondola 9, and then a predetermined lifting operation signal is issued, and the winch is operated to raise the working gondola 9.

After completing the desired maintenance and inspection work, the work gondola 9 is first lowered, and the hook 92 formed on the extending end of the wire 42 is removed from the hanging tool 96 on the ground or on the floor, and then the ascending operation is performed. A signal is issued, the brake motor 40 of the winch is operated, the wires 42, 42 are wound around the drums 41, 41, and the extending ends thereof are raised.

On the other hand, in normal use, the gantry elevating device attaches the elevating gantry 3 to the lower surface of the support gantry 1 with the hook 5.
0.50 and is suspended, and the elevating frame 3 can be lowered by remote control as appropriate. That is, when a predetermined lowering operation signal is issued as desired, the winch of the elevating mechanism 4 operates to raise the elevating frame 3 within a predetermined range. When the hanging rod 8 on the elevating pedestal 3 side moves above the hook 50 and releases it, the elevating pedestal 3 is suspended from the wires 42, 42 wound around the drums 41, 41. Then, due to its own weight, the lowering operation is started under the control of the brake motor 40. This lowering operation stops on the ground surface or the floor surface at a preset timing. At this time, a hook 92 formed on the extending end of the wire 42 is fixed to the hanging tool 9 on the work gondola 9 side.
6, it is also possible to raise and lower the work gondola 9 together with the elevating frame 3.

After completing the desired maintenance and inspection work, when a raising operation signal is issued, the brake motor 40 rotates, winding the wires 42, 42 around the drums 41, 41, and raising the elevating frame 3. Next, the hook 50 engages with the hanging rod 8 of the elevating pedestal 3, and the elevating pedestal 3 is suspended below the support pedestal 1.

Furthermore, it is also possible to lower the elevating frame 3, replace it with the work gondola 9 on the ground, and raise it directly below the support frame 1.

Note that the equipment to be installed on the elevating frame 3 does not necessarily have to be floodlights, lighting fixtures, and other lighting devices, but it can be placed at a high place and equipped with equipment and equipment necessary for maintenance inspection and other work as desired. It can also be modified as a stand.

[Effect of idea]

Since the work gondola suspension mechanism in the gantry lifting device according to the present invention is configured as described above, wires placed at high places such as ceilings and walls of stadiums can be lowered by remote control, and lightweight work can be carried out. The present invention has excellent practical effects, such as being able to carry out desired and necessary work by hanging the gondola and lifting it up, and the work can be carried out safely and reliably.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the structure of the work gondola suspension mechanism in the gantry lifting device according to the present invention;
The figure is a side view, Figure 3 is a front view showing the support frame, Figure 4 is an enlarged perspective view of the guide member and hook for suspending the working gondola and the lifting frame, and Figure 5 is the working gondola or the lifting frame. FIG. 1... Support frame, 2, 2... Lighting equipment, 3...
Elevating frame, 4... Elevating mechanism, 5... Suspension mechanism, 6
... Connector, 7 ... Lifting guide mechanism, 9 ... Gondola, 42 ... Wire, 91 ... Guide member, 9
2...Hook, 93...Brim part, 94...Suspension rope.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Consisting of a support pedestal that is suspended and fixed from the ceiling and an elevating pedestal that is suspended from the support pedestal so that it can be raised and lowered,
The elevating pedestal is suspended under the supporting pedestal using multiple wires stretched from the supporting pedestal side to the elevating pedestal side, and the supporting pedestal side and the elevating pedestal side are electrically disconnected via a connector. , and a pedestal elevating device that constitutes a lifting/lowering guide mechanism for the elevating pedestal relative to the support pedestal, wherein the extending end of the wire for suspending the elevating pedestal is
It is inserted through a guide member of a cylindrical body attached to the lifting frame side via a plurality of suspension ropes fixed to the outer periphery, and a flange portion having a diameter larger than the inner diameter of the guide member is formed at the tip thereof. The above-mentioned flange prevents the hook from coming off above the guide member, and allows the hook to hang downward when removed from the elevating frame so that a work gondola can be hung thereon. A working gondola suspension mechanism in a gantry elevating device, characterized by comprising: (2) A connecting member is attached to the extending end of the wire, and a plurality of suspension ropes for hoisting the lifting frame are connected to the extending direction of the connecting member, and at least the upper end side or the lower end side of the hanging rope is connected. 2. The working gondola suspension mechanism in the gantry lifting device according to claim 1, wherein the connecting cable is configured to be able to be hung on and removed from the connecting member or the lifting gantry by attaching and detaching the connecting ring interposed therebetween. .