JP3107363B2 - Hanging type lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging type lifting apparatus for lifting and moving a load such as a studio lighting apparatus from a ceiling side , and more particularly to a hanging type lifting apparatus which is sufficiently resistant to load fluctuations of the load. The present invention relates to a hanging type lifting device capable of maintaining rigidity.

[0002]

2. Description of the Related Art Generally, when a lighting device is raised or lowered to an arbitrary height in a TV studio or a theater, the lighting device is supported on a stationary portion of a ceiling or moving means via a lifting device, and is installed in an arbitrary space. The lighting device is moved up and down or moved. Conventionally, as such a lifting device, a fishing rod type or a panta type using a pantograph, in which a plurality of pipes are stored and extended from the large-diameter side pipe at any time by a lifting mechanism, is used. I have been. However, the fishing rod type has drawbacks such as a dead space equivalent to one stage of pipe when stored, and it cannot be stored if it is curved, and the pantograph type is excellent in that it can be easily stored, but due to its structure, it rolls There was a drawback that vibration caused by the vibration was large.

Therefore, the present applicant has proposed a lifting and lowering device which is improved in the panta type and which is strong against rolling. This lifting device
As shown in FIG. 7, two rectangular support plates 61, 67 provided in parallel with each other at intervals in the vertical direction, and between the support plates 61, 67 so as to suspend the support plate 61. It is composed of four planar pantographs 62 interposed.

The pantograph 62 is composed of a plurality of hollow square rod members 63, which are connected to form a diamond frame. In other words, each bar member 63 is pivotally supported one after another rotatably by a rotary shaft 64 at the end point and the midpoint, the opening degree of each bar member 63 which is connected is changed, pantograph
This is to make the graph 62 expandable and contractible in a planar shape .

Furthermore, the support plate 61 and 67 is Pantagu
A long groove and a short groove are provided along side edges of each side so as to be able to be connected to the rough 62, and two grooves above the pantograph 62 are provided.
One of the two rod members 63 is inserted into the long groove 84 and is rotatably fixed by the slide pin 70, and can move in the groove together with the slide pin 70, and the other is the short groove 85.
And is rotatably fixed by a fixing pin 66.
The lower part of the pantograph 62 has a similar structure.

[0006] As described above, each side of the support plate is extended in a plane.
The provision of the shrinking pantograph reduces the horizontal vibration.

[0007]

The object of the invention is to, however the above-mentioned rise
Since the descending device is in a state in which the pantographs are independent of each other, for example, when used by suspending on a movable means that moves above a ceiling or the like, when it stops after moving in the horizontal direction, a bending moment due to inertia causes When the lower support plate vibrates greatly in the front-rear direction together with each pantograph, or when a rotating body is provided on the lower support plate and rotates, it vibrates greatly due to the torsional moment, so the next work is not started until the vibration is damped. There was a drawback that there was a lot of loss time.

[0008] It is an object of the present invention, Ya after stopping the horizontal movement
The vibration of the post-rotation stop decreased significantly in Thailand until the next work
It is an object of the present invention to provide a new hanging-type lifting device capable of eliminating the loss .

[0009]

Means for Solving the Problems The present invention to achieve the object, therewith immediately below the substrate as shown in claim 1
A lift plate is positioned in parallel, and a plurality of pantographs each having a planar structure that expands and contracts in the vertical direction between the substrate and the lift plate are connected to and separated from each other by a plurality of pantographs, and each pantograph is attached to the periphery of the substrate and the lift plate. The bent portions of at least a pair of adjacent pantographs are connected to each other with an L-shaped or V-shaped connecting bracket to form a three-dimensional structure, and are arranged on the substrate side.
And an actuator for raising and lowering the lifting plate with a lifting rope .

That is, by arranging a plurality of pantographs in a ring shape and connecting and supporting adjacent pantographs so as to intersect each other with L-shaped or V-shaped connecting fittings at adjacent bent portions thereof. Since the pantographs in a planar structure in an independent state have a three-dimensional structure, which greatly improves the bending rigidity and torsional rigidity, it is possible to effectively suppress longitudinal vibration and rotational vibration after stopping horizontal movement. it can.

Specifically, as set forth in claim 2, the substrate and the elevating plate are formed of an even number of polygonal plates having similar shapes. By providing a pantograph, the above object can be effectively achieved.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the hanging type lifting device of the present invention comprises a rectangular substrate 1 provided on the ceiling side, and
A rectangular shape located immediately below the substrate 1 at a predetermined interval
The lifting plate 7 and the space between these peripheral edges are connected vertically.
The four pantographs 2 , 2 , 2 , 2 having a planar structure provided as described above, and an L-shaped connecting metal fitting 9 for connecting the bent portions 19 of the pantographs 2 , 2 , 2 , 2 to each other. .

The substrate 1 and the elevating plate 7 are provided with one long groove 14 and one short groove 15 for connecting to the respective pantographs 2 , 2 , 2 , 2 along a side edge of each side. I have. However, the long groove 14 and the short groove 15 are provided so as to be adjacent to the long groove 14 and the short groove 15 provided on adjacent sides.

The pantograph 2 is formed by combining hollow rectangular bar members 3 as shown in FIG.
, And the respective rod member 3 is rotatably supported by a rotary shaft 4 with overlap end points, midpoints, to form a rhombic frame. For this reason, as shown in FIG. 3, the pantograph 2 can be expanded and contracted up and down by applying an external force to vary the opening θ formed by the bar members 3 at the middle point.
For example, when extending upward in the figure, the opening θ decreases and the slide pin 10 moves in the direction of the arrow. Further, as shown in FIG. 2, a bent portion 19A composed of the rod member 3 and the rotating shaft 4 is rotatably connected to the bent portion 19B of the adjacent pantograph 2 by an L-shaped connection fitting 9.
However, as shown in FIG. 1, this connection connects only the bent portion 19 where the short groove 15 is located above, and the bent portion where the long groove 14 is located above is free and not connected. I have. That is, the connected bent portions 19 are 4
The bent portions 19 that are gathered on one diagonal of the rectangle formed by the two pantographs 2 and that are not connected are gathered near the other diagonal.

Furthermore, the upper and the two bar members 3 below the pantograph 2 each long groove 14 and Tanmizo 15 provided on the substrate 1 and the lift plate 7 is fixed, pantograph 2 is the elevator plate 7 Can be suspended. Here, each of the rod members 3 is slidably and rotatably supported by the slide pin 10 in the long groove 14, and is connected to the short groove 1.
5 is rotatably supported by a fixing pin 6.

Accordingly, in the above-mentioned hanging type lifting device, the opening degree of the bar member 3 constituting the pantograph 2 is changed by an external force, and at the same time, the bar member 3 fixed by the slide pin 10 is slid, so that the pantograph 2 By expanding and contracting, the substrate 1 and the elevating plate 7 can be moved close to and away from each other. Here, since the bent part 19 is connected by the L-shaped connecting fitting 9, when the pantograph 2 is extended, the bent part 19 expands and contracts in a connected state, and the pantograph 2 is moved toward the connecting fitting 9 as a whole. Will move. Also, as shown in FIG.
The eater 16 is placed and the actuator 1
The lifting rope 17 extending from the lifting plate 6 is connected to the lifting plate 7 side.
The lifting rope 17 is connected to the actuator 16
The elevating plate 7 is moved up and down by winding and unwinding.
Will be.

Next, the operation of the present embodiment will be described .

The hanging type elevating device having the above-mentioned structure has an L-shaped three-dimensional structure in which at least a pair of adjacent pantographs 2 are connected to each other so that the bent portions 19 of the pantographs 2 are connected to each other so that the pantographs 2 having a planar structure intersect each other. Become
Bending rigidity and torsional rigidity are greatly improved. Therefore, when the hanging type lifting device is used by hanging it on a movable means that moves above a ceiling or the like as described above, for example, a bending moment due to inertia generated when the device is stopped after moving in the horizontal direction. The lifting plate 7 and each of the pantographs 2, 2, 2, 2 are not greatly vibrated by the torsional moment generated when the rotating body provided on the lower lifting plate 7 side is rotated, and the vibration There since converged attenuated immediately, it is possible to greatly reduce the loss time when applied preparative to the next task.

In the above embodiment, the substrate 1 and the elevating plate 7 are provided with two types of grooves, that is, the long groove 14 and the short groove 15.
The form of the groove is not limited to this embodiment as long as one of the two rod members fixed to these grooves is fixed and the other is free.

[0021]

Further, each pantograph 2 , 2 , 2 , 2 is:
Bar members 3 having different lengths as shown in FIG. 6 may be crossed one after another at regular intervals.

Here, the shape of the substrate 1 and the lifting plate 7 is desirably polygonal because the pantographs 2 , 2 , 2 , and 2 can be connected to each side, and particularly rectangular or hexagonal because the pantographs 2 can be connected uniformly. A polygon having even-numbered sides, such as a polygon and an octagon, is desirable. Further, the connection fitting may be of a shape that matches the position of the adjacent link mechanism, and may be V-shaped or the like.

[0024]

As described above, according to the present invention, pantographs having a planar structure are arranged in a ring shape and adjacent pantographs are connected to each other to form a three-dimensional structure. even when equipped with moving or rotating device, since the immediate vibration is attenuated, Taimuro
The work can be performed efficiently with less trouble.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a suspension type lifting device according to the present invention.

FIG. 2 is a partially enlarged view showing the vicinity of a connection fitting for connecting pantographs to each other.

FIG. 3 is a configuration diagram showing a relationship between a pantograph and a lifting plate.

FIG. 4 is a diagram showing a cross section of a rod member.

FIG. 5 is a view showing a modified embodiment of the present invention.

FIG. 6 is a view showing a modified embodiment of the present invention.

FIG. 7 is a perspective view showing an embodiment of a conventional hanging type lifting device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Substrate 2 Pantograph 3 Bar member 4 Rotating shaft 6 Fixing pin 7 Elevating plate 9 Connecting bracket 10 Slide pin 14 Long groove 15 Short groove

──────────────────────────────────────────────────続 き Continuing on the front page (72) Mitsuhiro Sato 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Inside the Hidaka Factory, Hitachi Cable Corporation (72) Inventor Masami Murayama, Hidaka-cho, Hitachi City, Ibaraki Prefecture 4-12-1, Nippon Electric Cable Equipment Co., Ltd. (72) Inventor Koji Hattori 3-37-7, Nishi-Kojiya, Ota-ku, Tokyo Marumo Electric Co., Ltd. Technical Center (72) Inventor Kazuhiro Tonomura Kyoto Ichigo, Nishikujo-Toyota-cho, Minami-ku, Kyoto Within Kane-dori Co., Ltd. (56) References Japanese Utility Model Sho 49-100434 (JP, U) Japanese Utility Model Hei 4-42196 (JP, U) (58) Field survey .Cl. ⁷ , DB name) B66F 7 / 06,7 / 08

Claims (2)

(57) [Claims] 1. An elevating plate is positioned directly below and parallel to a substrate.
It is, Shin between the substrate and the elevating plate in the upper and lower directions
At least one pair of pantographs are connected so as to be close to and separated from each other by a plurality of pantographs having a planar structure that shrinks and are arranged close to each other so as to be annularly arranged along the periphery of the substrate and the elevating plate. Are connected to each other with an L-shaped or V-shaped connecting bracket to form a three-dimensional structure, and the elevating plate is raised and lowered on the substrate side.
A hanging type elevating device comprising an actuator for elevating with a rope for use . 2. The apparatus according to claim 1, wherein the substrate and the elevating plate are formed of an even number of polygonal plates having similar shapes, and the pantographs are provided near respective sides thereof so as to be parallel thereto. 2. The hanging type lifting device according to 1.