JPH0418106B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weight balance device for a movable stage.

This is my own prior invention.
The stage device described in the publication, specifically, has a guide post erected near the wall indoors and outdoors, has a built-in weight balance in the guide post, and uses the weight balance to freely raise and lower the rear part of the stage body. The basic configuration of a movable stage is supported, and the front part of the stage body supports wheels that roll on the floor surface, and an efficient variable adjustment means for the weight balance device in the movable stage is provided. By providing foldable stage legs, high-floor stages with relatively high legs and low-floor stages with relatively short legs can be stored indoors or outdoors near walls, and can be stored on the floor. This allows the deployment operation to be performed smoothly and safely.

Hereinafter, an overview of the entire apparatus of the present invention will be explained with reference to the accompanying drawings.

This type of movable stage is installed on the storage wall A of indoor (exceptionally outdoor) walls of gymnasiums, community centers, etc.
and the floor surface B of the part concerned.

First, as a first example, a case of a raised-floor movable stage with relatively long legs whose stage legs are foldable will be described based on a usage state in which the stage is unfolded on a floor surface B.

1 is a rectangular hollow outer support, which is connected to the storage wall surface A.
It is erected using anchor bolts etc.

2 is a stage main body configured with a planar rectangular stage floor, and 6 in the left and right width direction of the bottom surface
The bracket 3 is fixed at the intersection of four rows in the longitudinal and longitudinal directions.

4 to 7 are stage legs whose upper parts are supported by the bracket 3, and the front 3 except for the stage leg 7 in the last row.
The upper ends of the stage legs 4 to 6 in the row are pivoted by connecting pins 8.

Reference numeral 9 denotes an upper support shaft pivotally installed above the stage legs 7 in the last row, and includes stage legs 7 for every three left and right bodies.
a to 7c and stage legs 7d to 7f are connected to each other by being connected to each other across the left and right width directions.

Reference numerals 10 and 11 are lower support shafts that are pivotally installed at the lower parts of the stage legs 4 to 7, and one of the lower support shafts 10 extends across the left and right width directions of the front three rows of stage legs 4 to 6. The other lower support shaft 11 extends through and connects the stage legs 7a to 7c and the stage legs 7d to 7f of each of the three right and left bodies in the last row in the left and right width direction, respectively. There is.

Reference numeral 12 denotes a connecting rod that spans the lower part of the stage legs 4 to 7 in the front and back depth direction.
It is pivotally installed by lower support shafts 10 and 11 that pass through the lower part of 7 in the left and right width direction.

Reference numeral 13 denotes a wheel or roller, etc. (hereinafter simply referred to as a wheel) that rolls on the floor surface B, and is mounted on a bearing at the lower end of the stage leg 4 in the front row, which is slightly shorter than the other stage legs 5 to 7. I support it.

At this time, the lower support shaft 10 extending below the stage leg 4 in the front row can also function as an axle for the wheels 13.

Reference numeral 14 denotes a hollow inner support such as a lip channel steel which is installed upright on both left and right sides of the outer support 1, and has a guide hole 16 formed in the longitudinal direction on its outer surface.

Reference numeral 15 denotes a guide roller that moves up and down within the inner support 14, and guides the inner shaft ends of the upper support shaft 9 and the lower support shaft 11, which are inserted above and below the stage legs 7 in the last row, from the guide elongated hole 16 to the inner side. Look inside pillar 14,
A guide roller 15 is supported at the end of the shaft so as to be freely rotatable.

Instead of the guide roller 15, sliding pieces (not shown) are attached to the inner shaft ends of the upper support shaft 9 and the lower support shaft 11, so that they are slidably guided by the inner support shaft 14 and move up and down. It can also be configured as

The left and right sides of the outer support column 1 are closed by side plates, and a guide elongated hole 17 for guiding the upper support shaft 9 and the lower support shaft 11 in the last row up and down is formed approximately in the center thereof.

As described above, the outer support 1 has the guide slot 17 vertically arranged therein, and the guide slot 1 is arranged at the left and right inner positions thereof.
6 is installed vertically, and the stage main body 2
Guide columns 1, 14 are constructed for the guide columns 1, 14.

Reference numerals 18 and 19 refer to a rotatable fixed wheel such as a chain sprocket or a pulley, and a lifting car. Of these, the fixed wheel 18 is supported by bearings on the upper end of the inner support 14, and the lift car 19 is supported by a bearing on the upper end of the inner support 14. 14 in the vertical direction of the weight balance lift chamber described below.

Reference numeral 20 denotes a transmission member such as a chain or a wire rope, one end 20a of which is connected to the inner side of the upper support shaft 9, and this is turned around the upper side of the fixed wheel 18 at the upper end of the inner support 14. At the top, the elevator car 19 between the left and right inner columns 14 is turned and hung in sequence, and the other end 20b is attached to the ceiling plate 1 of the outer column 1.
It is connected to a latching tool 21 fixedly attached to a.

X and Y are balance weights suspended and supported by a pair of left and right elevator cars 19, consisting of a foundation weight X on the upper side and an adjustment weight Y on the lower side. Weight plate X ₁ ~ X _n
are stacked and connected and supported by a penetrating rod 22, and the weight of the foundation weight are doing.

In addition, the adjustment weight Y is made by attaching one or more weight plates to the bottom of the bottom weight plate X _n of the basic weight X.
Weight plates Y ₁ with the same number of plates and weight
- Y _o are connected and supported in multiple stages at required intervals in the vertical direction by connecting members 24 such as chains or wire ropes.

In this case, the weight of the adjustment weight Y as a whole can be variably adjusted by making the upper and lower mounting intervals of the weight plates Y ₁ to _{Y o} longer on the lower side than on the upper side. That's what I do.

Therefore, in order to store a raised movable stage that is unfolded on the floor B of a gymnasium, community center, assembly room, etc. indoors in an inverted state on the storage wall A near the wall, the left and right sides of the stage body 2 are While lifting the rear end, a pushing force is applied from the front end of the stage main body 2 toward the storage wall surface A behind it.

First, by lifting the rear part of the stage main body 2, the state in which the outer support 1 and the stage main body 2 are abutted against each other with their sides substantially orthogonal to the lower part of the outer support 1 is released.

Then, when a backward pushing force is applied from the front end of the stage main body 2, the pushing force and the lifting force due to the full weight of the balance weights X and Y suspended from the elevator car 19 cause the rearmost row to Upper support shaft 9 and lower support shaft 11 in stage leg 7
The guide roller 15 at the end of the shaft begins to gradually rise while being guided by the inner support 14, and as a result, the rear part of the stage main body 2 is guided by the inner and outer support supports 1 and 14 and their guide slots 16 and 17. The stage body 2 is gradually pulled up while standing upside down, and as a result, the stage body 2
The front end wheels 13 roll on the floor surface B and reach the storage wall surface A.
It gradually moves horizontally toward .

In this way, the inclination gradient of the stage main body 2, which was initially in a horizontal state, gradually increases and the stage main body 2 is raised to an inclination gradient of about 45 degrees to 60 degrees when viewed from the side. As shown in the figure, the pulling force of the stage body 2 by the balance weights X and Y functions with the help of the force pushing the stage body 2 backward, but the stage body 2
When the slope of the stage body 2 exceeds about 45 degrees to 60 degrees, the descending speed of the balance weights X and Y begins to gradually increase. If the stage main body 2 reaches the state where it is leaning against the storage wall A, there is a risk that a large shock or load will be generated in various parts of the stage body 2. .

Therefore, in the case of the stage device shown in the previous Utility Model Publication No. 54-11800, the stage body 2 suddenly runs ahead of the stage body 2 and an accelerating pulling force starts acting on it.
Using an inclination gradient of about 45 degrees to 60 degrees as a guide, instead of pushing the stage body 2 backward, conversely, while adjusting the force pushing the stage body 2 forward, apply a pulling force or A smooth lifting movement of the stage main body 2 was ensured by a delicate method of gradually pushing in while applying a pulling force.

However, in the case of the present invention, the stage body 2
When the slope becomes about 45 degrees to 60 degrees, the lowest weight plate Y _o of the adjustment weight Y will touch the floor B or the ground as shown in Fig. 3, and the stage body 2 As the inclination gradient increases, the weight plate on the upper side of the adjustment weight Y is sequentially placed above it.
Y ₁ , Y _{2 ,} etc. are stacked one after another, and the lifting force of the stage body 2 is gradually adjusted to be weaker.Finally, the stage body 2 is lifted by the basic weight Smooth wall storage is possible.

At this time, stage legs 4 to 7 of the stage main body 2
As the rear part of the stage body 2 is pulled up, the stage body 2 is folded relatively to the back side of the stage body 2 while maintaining the vertical state as shown in FIG.

In the above case, the adjustment weight Y is directly grounded on the floor surface B or the ground, and the weight plates Y ₁ to 1 are placed on top of it one after another.
The pulling force of the stage main body 2 was adjusted by stacking the weights _Y , but the adjustment weight Y was placed on a block of an appropriate height installed in advance at the lowest part between the inner supports 14, as shown in the imaginary line in Fig. 2. Alternatively, the lifting force of the stage main body 2 can be adjusted by indirectly supporting the stage main body 2 on a support plate 26 extending between the inner support columns 14 at an appropriate height.

Contrary to the above, when pulling out the movable stage housed on the wall surface onto the floor surface B and deploying it in a substantially horizontal state, first, the lower end of the stage body 2 in the inverted state is pulled out forward.

As a result, the lower end wheels 13 of the stage main body 2 roll forward on the floor surface B, and as the stage main body 2 becomes lower than the appropriate slope, the lower end of the fixed base weight Adjustment weights Y are successively suspended in the air.

As a result, the stage main body 2 is pulled out while the pulling force, speed, etc. of the stage main body 2 are appropriately adjusted, and the stage main body 2 is smoothly and safely deployed on the floor surface B.

In the above case, the balance weights X and Y are weight plates that have approximately the same weight or the same number of weight plates as the upper foundation weight X, which is made by laminating a plurality of weight plates _X1 to _Xn .
Although Y ₁ to _Yo are configured with a lower adjustment weight Y supported by a connecting member 24 at a required interval, this can also be configured as shown in FIGS. 4 and 5. .

For example, in FIG. 4, reference numeral 27 denotes a support plate that clamps and supports a plurality of weight plates _X1 to _Xn , and the weight plates are supported by penetrating rods 22 inserted between the support plates 27 at both upper and lower ends. X _{1 -} It is attached to both left and right sides of the support plate 27, thereby eliminating the need for the elevator car 19.

In addition, in this case, the adjustment weight Y is configured in multiple stages with weight plates Y ₁ to Y _o that increase the weight or the number of attached plates on the upper side in stages compared to the lower side, and conversely, the adjustment weight Y Three weight plates Y ₁ to _{Y 3} are placed directly below the
Below that, two weight plates Y ₄ and Y ₅ are arranged such that they are gradually reduced in order such as one weight plate Y _o at the bottom.

Also, the weight plate Y ₁ in this adjustment eight Y
The vertical interval of ~Y _o is assumed to be when the connecting members 24 are connected at approximately equal intervals.

As shown in the above embodiments, the number and weight of the weight plates Y ₁ to _{Y o} constituting the adjustment weight Y may be approximately the same, or the weight or number of weight plates Y 1 to Yo on the upper side may be the same as on the lower side. adjustment means, such as making the vertical intervals of the weight plates Y ₁ to _{Y o} arranged in multiple stages approximately the same, or connecting the upper side shorter than the lower side. By appropriately combining means, the storage and unfolding operations for the stage body 2 can be performed with an optimal weight balance depending on the inclination of the stage body 2, the location of the facility, etc.

Next, in the case of Fig. 5, the balance weight X,
Of Z, the upper basic weight X is constructed in the same way as in Fig. 4, and the lower adjustment weight Z
For this purpose, large-diameter chains Z ₁ to _{Z 3} with the required weight are adopted, and a plurality of these chains are suspended from the bottom of the basic weight X at intervals on the left and right. The balance can be adjusted freely.

In this case, the case where the weight per unit length of the large diameter chains Z ₁ to _{Z 3} is approximately the same is illustrated, but
As in the case of the second embodiment, the weight of the chain on the upper side is set heavier than that on the lower side, or the large diameter chains Z ₁ to _{Z 3} of different lengths and shorts are hung at intervals on the left and right. It is also possible to set

Furthermore, as a modification other than the above, the upper support plate 27 shown in FIGS _. It is also possible to directly hang multiple Z ₃ units at intervals on the left and right.

In the above case, a weight balance device for a high-floor movable stage in which relatively tall stage legs 4 to 7 are foldably pivoted to the stage main body 2 has been described, and this is shown in FIG. As shown in the figure, stage legs 4 with relatively short legs are attached to the stage main body 2.
It is also possible to configure a weight balance device similar to that described above on a low-floor movable stage formed by fixedly configuring .

In the present invention, as described above, the guide column 1 is erected near the wall indoors and outdoors, the guide column 1 has a built-in balance weight, and the rear part of the stage main body 2 is supported by the balance weight so as to be movable up and down. , a movable stage supporting wheels 13 rolling on the floor surface B is provided at the front part of the stage main body 2.
, a fixed weight base weight X with the balance weight arranged on the upper side, and a plurality of weight plates Y ₁ to Y _o arranged at appropriate intervals on the lower side thereof.
The present invention provides a weight balance device for a movable stage comprising an adjustment weight Y consisting of a fixed weight base weight X having the above-mentioned balance weight disposed on the upper side thereof, and We have provided a weight balance device for a movable stage that is composed of adjustment weights Z consisting of a plurality of large diameter chains Z ₁ to Z ₃ suspended at left and right intervals, so that it can be used as a weight balance device for a movable stage like the previous movable stage. The stage body can be retracted and expanded very smoothly and safely without being suddenly pulled up or pushed down when the stage body reaches a certain angle (approximately 45 degrees to 60 degrees). Brings about various effects.

[Brief explanation of drawings]

Figure 1 is a schematic rear perspective view of the entire device taken vertically across the outer support, Figure 2 is its rear view, Figure 3 is a vertical side view showing the operating state of the device, and Figures 4 and 5 are of the balance weight. A diagram showing the first and second modified examples,
FIG. 6 is a schematic perspective view of the low-floor movable stage viewed from behind. Code list, A... Storage wall surface, B... Floor surface, X...
Basic weight, Y, Z... Adjustment weight, 1...
Outer support, 2...Stage body, 3...Bracket, 4-7...Stage legs, 7a-7c, 7d-
7f...Last row stage leg, 8...Connection pin,
9... Upper support shaft, 10, 11... Lower support shaft,
12... Connecting rod, 13... Wheel, 14... Inner support, 15... Guide roller, 16, 17... Guide slot, 18... Fixed car, 19... Lifting car, 20...
...Transmission member, 21...Latching tool, 22...Connection rod,
23... Hanging rod, 24... Connection member, 25... Block, 26, 27... Support plate.

Claims (1)

[Scope of Claims] 1. A guide post 1 is erected at a wall portion indoors and outdoors, a balance weight is built into the guide post 1, and the rear part of the stage main body 2 is supported by the balance weight so as to be movable up and down, In the front part of the stage main body 2, in a movable stage that supports wheels 13 rolling on the floor surface B, a fixed weight base weight X with the balance weight disposed on the upper side;
A weight balance device for a movable stage characterized by comprising an adjustment weight Y consisting of weight plates Y ₁ to _{Y o} arranged in multiple stages at appropriate intervals on the lower side thereof. 2 The basic weight X is divided into multiple weight plates X ₁ to _{X n}
Configure it to the required fixed weight, and adjust the adjustment weight Y,
Weight plates Y ₁ to _{Y o} with approximately the same weight or number of attached plates
A weight balance device for a movable stage according to claim 1, which is configured in multiple stages. 3 The basic weight X is connected to multiple weight plates X ₁ to _{X n}
Configure it to the required fixed weight, and adjust the adjustment weight Y,
A weight balance device for a movable stage according to claim 1, which is configured in multiple stages with weight plates Y ₁ to _Yo that increase the weight or the number of weight plates attached on the upper side compared to the lower side. 4. Claims 1, 2, or 3 in which the weight plates Y ₁ to Yo in the adjustment weight Y are connected by making the interval between the weight plates Y 1 to _{Y o} shorter on the upper side than on the lower side. A movable stage weight balance device. 5 Weight balance of the movable stage according to claim 1, 2, or 3, in which the weight plates Y ₁ to _Yo in the adjustment weight Y are connected vertically at approximately equal intervals. Device. 6. A guide post 1 is erected on the indoor/outdoor wall portion, a balance weight is built into the guide post 1, the rear part of the stage main body 2 is supported by the balance weight so as to be able to rise and fall, and the front part of the stage main body 2 is raised and lowered. In the movable stage supporting the wheels 13 rolling on the floor surface B, a fixed weight base weight X with the balance weight disposed on the upper side is used.
and an adjustment weight Z consisting of a plurality of large-diameter chains Z ₁ to _{Z 3} suspended from the lower side at left-right intervals. 7 The basic weight X is connected to multiple weight plates X ₁ to _{X n}
Configure it to the required fixed weight, and adjust the adjustment weight Z,
Large diameter chain with approximately the same weight per unit length
A weight balance device for a movable stage according to claim 6, comprising _Z1 to _Z3 . 8. The movable stage weight balance device according to item 6, in which the basic weight X and the adjustment weight Z are composed of only large-diameter chains _Z1 to _Z3 .