JP4072562B1 - Stage equipment - Google Patents

Abstract

To provide a stage apparatus capable of stably and surely carrying out and taking in / out of a large tool on a stage having a limited peripheral area.
A wire 4 wound and held in a spiral groove provided on a peripheral surface of a winch cylinder 3 is led out between connecting portions at both ends and connected to a tool 7 on a stage 5, In a stage apparatus for loading and unloading the tool 7 onto and from the stage 5 by winding and pulling out the wire 4 according to the rotation of the winch cylinder 3, a gantry 10 on which the winch cylinder 3 and the motor 2 for rotation drive are mounted, And a base 11 for supporting the gantry 10 so as to be movable in the axial direction of the winch cylinder 3. The spiral groove is fixed to the base 11 and exposed to the peripheral surface of the winch cylinder 3 by the lead-out of the wire 4. An engaging member 17 is provided for engaging with.
[Selection] Figure 1

Description

  The present invention relates to a stage apparatus for putting in and out tools such as background curtains and background pictures on a theater stage.

  In performances such as theater and musicals, it is indispensable to carry various tools on the stage. This work is often done manually, but for example, it may be required to carry in and out many tools in a short period of time in order to achieve rapid scene change, In order to enhance the production effect, it may be required to carry in / out the tool on the stage being performed. In order to meet such a demand, a stage device is used in which a large tool is carried in and out by an electric winch (see, for example, Patent Document 1).

  FIG. 6 is a plan view schematically showing the state of use of this type of stage apparatus. Patent Document 1 discloses a configuration for lifting and lowering a tool (hanging object) used by hanging it on the upper part of a stage such as a background curtain, but FIG. 6 shows the floor of the stage. The structure for carrying in / out the large tool (floor object) arrange | positioned above is shown.

  As shown in the figure, the electric winch 1 is a known mechanical device including a winch cylinder 3 that rotates around a shaft by using a motor 2 as a drive source, and a wire 4 that is wound around the winch cylinder 3. In the stage apparatus using the electric winch 1 for carrying in / out of a large tool, a winch cylinder 3 and a motor 2 are installed on a sleeve part of one side of the stage 5 shown in the figure, and in the vicinity of both ends of the winch cylinder 3. The wire 4 connected to the peripheral surface of the wire 4 is extended from the connection end so as to be folded back along the movement path 6 set on the surface of the stage 5. A movable table 8 movable along the movement path 6 is connected, and a large tool 7 is attached to the movable table 8.

In this stage apparatus, when the motor 2 is driven and the winch cylinder 3 is rotated in both forward and reverse directions, the wire 4 wound and held as described above is wound around one half of the winch cylinder 3, At the same time, it is pulled out from the other half. As a result, the tool 7 attached to the middle part of the wire 4 moves along with the moving table 8 along the moving path 6 as shown by white arrows in the figure, and is carried in and out on the surface of the stage 5. be able to. This loading / unloading can be carried out without the need for manual operations on the stage 5, and it can meet various demands such as quick loading / unloading for changing scenes, loading / unloading on the stage during performance. Can do.
JP 2002-119774 A

  Now, in the stage apparatus configured as described above, it is important not to interfere with the carrying in / out of the large tool 7 on the stage 5. Conventionally, as shown in FIG. 6, guide members 40, 40... Are provided on the entry side and the exit side of the movement path 6, and a guide roller 41 is provided on the folded portion of the wire 4. Accordingly, the wire 4 is guided to ensure that the large tool 7 is carried in and out in accordance with the movement of the wire 4 as described above.

On the other hand, in order to surely carry out the loading / unloading of the large tool 7, it is important that the wire 4 is wound around the winch cylinder 3 and the wire 4 is pulled out from the winch cylinder 3 stably. However, as described above, the wire 4 is led out from between the connecting portions at both ends of the winch cylinder 3, and the winding and drawing positions of the wire 4 are directed toward one connecting end as the winch cylinder 3 rotates. Therefore, the wire 4 from the winch cylinder 3 toward the moving path 6 is inclined with respect to the original lead-out direction perpendicular to the axis of the winch cylinder 3 as indicated by a one-dot chain line in FIG. When the winch cylinder 3 rotates in this state, there is a problem that the wire 4 comes off from the spiral groove provided on the peripheral surface of the winch cylinder 3 and the winding and drawing of the wire 4 become unstable.

  In the electric winch 1, the inclination angle θ () of the wire 4 with respect to the winch barrel 3 is secured from the viewpoint of preventing the wire 4 from coming off and ensuring the safety during use by stably winding and pulling the wire 4. (See FIG. 6). However, this upper limit value is a very small angle of about several degrees at most, and when the upper limit value is to be observed in the stage apparatus shown in FIG. 6, the separation length L from the end of the stage 5 to the installation position of the winch cylinder 3 is set. Or using a large-diameter winch cylinder 3 and reducing the change length W of the winding or pulling-out position of the wire 4, and the area of the sleeve portion where the electric winch 1 is installed is limited. There is a problem that application on stage 5 is limited.

  This problem also occurs in the stage apparatus disclosed in Patent Document 1 that uses an electric winch to move a suspended object up and down, and in performances that handle many large tools including floor objects and suspended objects. Therefore, there is an urgent need for practical use of a stage device that can carry in and out each large tool without requiring space.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a stage apparatus capable of stably and reliably carrying out and taking in / out of tools on the stage where the peripheral area is limited. To do.

The stage apparatus according to the first aspect of the present invention is to connect the wire wound around the spiral groove provided on the peripheral surface of the winch cylinder between the connecting portions at both ends and connect to the tool on the stage. In the stage device, the winch is wound around the spiral groove on one side of the lead-out portion in accordance with the rotation of the winch cylinder, and the tool is carried in and out of the stage by the wire drawn out from the spiral groove on the other side. A frame on which the cylinder is mounted together with a motor for driving the rotation, a base that supports the frame in a movable manner in the axial length direction of the winch cylinder, and a winding position of the wire that is fixed to the base And an engaging member that engages with the spiral groove exposed by the lead-out of the wire on the peripheral surface of the winch cylinder between the pull-out positions .

In the present invention, when the winch cylinder rotates, the winch cylinder and the motor are mounted by the action of the engaging member that engages with the spiral groove provided on the circumferential surface of the winch cylinder to wind and hold the wire. The position of the engagement member, that is, the lead-out position of the wire is kept stationary, and the winding of the wire and the withdrawal of the wire by the rotation of the winch cylinder are stably performed.

  The stage apparatus according to a second aspect of the present invention is characterized in that the gantry in the first aspect is configured as a frame surrounding the winch cylinder and the motor.

  In this invention, the frame on which the winch cylinder and the motor are mounted is a frame that surrounds the winch cylinder and the motor, and the winch cylinder is reduced in weight while securing the support rigidity of the winch cylinder and the motor, and the winch cylinder due to the action of the engaging member. Of the motor and the winch cylinder mounted on the pedestal are prevented from coming into contact with foreign matter, and the possibility of malfunction due to an accident is alleviated.

  The stage apparatus according to a third aspect of the present invention is such that the engaging member in the first or second aspect is fixed to a guide member provided on the base so as to guide the wire led out from the winch cylinder. It is characterized by being.

In the present invention, the engagement member is fixed to the guide member for guiding the wire led out from the winch cylinder, and the engagement with the spiral groove exposed on the peripheral surface of the winch cylinder is reliably realized by the lead-out of the wire.

  According to a fourth aspect of the present invention, there is provided a stage apparatus in which a wire led out from the winch cylinder is extended along a movement path set on the floor surface of the stage, and a tool connected to the middle of the wire is connected to the floor. It is configured to move along a plane.

  In this invention, since it was used for carrying in / out the large tool (floor object) arranged on the floor surface of the stage, it is sufficient for the sleeve portion to quickly carry in / out the floor object on the stage using the electric winch. Even when a large area cannot be secured, this can be realized.

  A stage apparatus according to a fifth aspect of the present invention is the stage according to the fourth aspect, wherein the movement path is a groove recessed in a pseudo floor laid on the floor of the stage, and is held movably in the groove. A moving table connected to the wire is provided.

  In this invention, a groove is provided in the pseudo floor that raises the floor surface of the stage, a wire is arranged in the groove, and a movement path is set by connecting to the movement table. Without having to expose the wires on the floor of the stage. Moreover, it becomes possible to carry out without processing the floor surface of the existing stage.

In the stage apparatus according to the present invention, by pulling out the wire from the winch cylinder, the engaging member is engaged with the spiral groove exposed on the peripheral surface between the winding position and the drawing position of the wire, and this engagement is performed. Since the winch cylinder and the motor are moved together with the mount on which they are mounted by the action of the members, the wire lead-out position to the stage can be changed to the winding and pull-out position that changes as the winch cylinder rotates. Regardless of whether the wire can be taken up and taken out to and from the stage on the stage, the wire can be taken up and pulled out stably without the inclination of the wire. Rapid loading and unloading of large tools can be carried out reliably without requiring a large area at the sleeve.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a plan view schematically showing a use state of the stage apparatus according to the present invention. In the following embodiment, as in the stage apparatus shown in FIG. 6, a case where it is applied to carry in / out of a tool (floor object) used by being placed on the floor of the stage will be described. It goes without saying that such a stage apparatus can also be applied to a case where a tool (hanging object) that is suspended from the stage is moved up and down.

  The stage apparatus according to the present invention includes an electric winch 1 having a winch cylinder 3 that rotates around an axis by using a motor 2 as a drive source, and a wire 4 wound around the winch cylinder 3. The electric winch 1 is installed on a sleeve portion on one side of a stage 5 that is partially shown in the drawing.

  The wire 4 is connected to the peripheral surface in the vicinity of both ends of the winch cylinder 3 and is extended from the connection end so as to be folded back along the moving path 6 set on the surface of the stage 5. As shown by a two-dot chain line in the figure, a moving base 8 that can move in the moving path 6 is connected to the middle portion of the wire 4, and a tool 7 is attached to the moving base 8. ing.

  A pair of guide bodies 40 and 40 for guiding the wire 4 are provided on the entry side and the exit side of the movement path 6, and a guide roller 41 that rotates about the vertical axis is provided on the folded portion of the wire 4. The wire 4 led out from the winch cylinder 3 is guided into the moving path 6 under the guidance of the inlet and outlet guide bodies 40, 40, as shown in the figure, wound around the guide roller 41 and folded back. .

  The above configuration is the same as that of the conventional stage apparatus shown in FIG. 6, but in the stage apparatus according to the present invention, the winch cylinder 3 is mounted on the gantry 10 together with the motor 2 for rotational driving. As shown in FIG. 1, the gantry 10 is a frame body that is framed in a rectangular box shape, and the winch cylinder 3 is supported on one half of the gantry 10 in the width direction so as to be rotatable about an axis along the longitudinal direction. Yes. The motor 2 is fixedly supported on the other half of the gantry 10 in parallel with the winch cylinder 3, and the output shaft of the motor 2 protruding to one side is connected to the winch cylinder 3 via the transmission belt 20. It is connected.

  As described above, the gantry 10 on which the winch cylinder 3 and the motor 2 are mounted is supported on the upper surface of the base 11. The illustrated base 11 is slightly wider than the gantry 10 and is an appropriately long rectangular flat plate.The upper surface of the base 11 is located at an appropriate distance in the width direction over a substantially entire length in the longitudinal direction. Two guide rails 12, 12 extending in parallel are arranged side by side. At both ends in the longitudinal direction of the lower surface of the gantry 10, a pair of support blocks 13, 13 are provided at positions corresponding to the guide rails 12, 12 in the width direction. The gantry 10 guides these support blocks 13, 13. The rails 12 and 12 are engaged with each other and supported on the base 11.

  The base 10 supported in this way is moved in the longitudinal direction of the base 11 and the base 10, that is, in the axial direction of the winch cylinder 3 by the movement of the support blocks 13 and 13 along the guide rails 12 and 12. Is possible. The base 11 only needs to have a configuration capable of supporting the gantry 10 by allowing the winch cylinder 3 to move in the axial length direction. It can also be configured by a frame body that is framed.

  On the upper surface of the base 11, a flat guide member 14 is erected substantially at the center of one side edge in the longitudinal direction. FIG. 2 is an enlarged cross-sectional view taken along the line II-II in FIG. As shown in the figure, the guide member 14 is a flat plate disposed opposite to the peripheral surface of the winch cylinder 3 and includes a lead-out hole 15 for the wire 4 provided at a height corresponding to the rotation shaft 30 of the winch cylinder 3. Yes.

  FIG. 2 also shows the engagement state between the guide rail 12 on the upper surface of the base 11 and the support block 13 on the lower surface of the gantry 10. The engagement between the guide rail 12 and the support block 13 may be a simple uneven engagement as shown in this figure, but a support is provided along the guide rail 12 by interposing a roller at the contact portion of both. The movement of the block 13, that is, the movement of the gantry 10 on the base 11, can be smoothly performed under the rolling resistance by the roller.

  FIG. 3 is a plan view showing the correspondence between the guide member 14 and the winch cylinder 3. As shown in this figure, the lead-out holes 15 are provided at two locations that are separated by an appropriate length in the axial direction of the winch cylinder 3, and are located above one lead-out hole 15 and below the other lead-out hole 15, respectively. Guide rollers 16 and 16 that rotate about a horizontal axis are respectively attached to the side facing the winch cylinder 3.

As shown in FIG. 3, the wire 4 is wound and held in a spiral groove 31 formed on the peripheral surface of the winch cylinder 3, and is drawn out at a position facing the respective lead-out holes 15, 15, and is led out separately. It is led out through holes 15 and 15. As shown in FIG. 2, the guide rollers 16 and 16 provided above and below the outlet holes 15 and 15 are brought into rolling contact with the wire 4 drawn in the tangential direction from the upper and lower sides of the winch cylinder 3 from the lower position or the upper position. Guides 15 and 15

An engaging member 17 is fixed on the surface of the guide member 14 facing the winch cylinder 3 so as to be positioned between the lead-out holes 15 and 15. As shown in FIG. 2, the engaging member 17 is a flat plate-like member protruding toward the winch cylinder 3, and the tip thereof is provided on the peripheral surface of the winch cylinder 3 for winding the wire 4. The spiral groove 31 is engaged over an appropriate length. The engaging member 17 is located between the lead-out holes 15 and 15, and the wire 4 wound around the winch cylinder 3 is led out at a corresponding position of the lead-out holes 15 and 15. Therefore, the engaging member 17 can be engaged with the spiral groove 31 exposed on the peripheral surface of the winch cylinder 3 by the lead-out of the wire 4, and this engagement state is as follows according to the rotation of the winch cylinder 3. It is maintained regardless of the lead-out position of the resulting wire 4.

  As described above, in the stage apparatus according to the present invention, the electric winch 1 configured as described above is installed on the sleeve portion on one side of the stage 5 and led out from the winch body 3 through the lead-out holes 15 and 15 of the guide member 14. The wire 4 is extended so as to be folded back along the movement path 6 set on the surface of the stage 5, and is connected to the middle part of the wire 4, and is movable along the movement path 6. It is used by attaching the large tool 7 to.

In this state, when the motor 2 is driven and the winch cylinder 3 is rotated in both forward and reverse directions, the wire 4 led out from the winch cylinder 3 is wound around the winch cylinder 3 on one side of the lead-out portion and on the other side. will be withdrawn from the winch drum 3, props 7 mounted as described above to the intermediate portion of the wire 4 is moved allowed with moving base 8 along a travel path 6 as shown by outline arrow in FIG. 1 The tool 7 can be carried in and out of the floor of the stage 5.

Here, the wire 4 is connected to both ends of the winch cylinder 3, and the winding and drawing positions of the wire 4 shift toward one connecting end as the winch cylinder 3 rotates. In the stage apparatus according to the present invention, the winch cylinder 3 can be moved in the axial direction by the movement of the gantry 10 on the base 11, while the wire 4 is led out to the peripheral surface of the winch cylinder 3 as described above. The engaging member 17 is engaged with the exposed spiral groove 31, and the engaging position of the engaging member 17 shifts with the rotation of the winch cylinder 3, and this shift amount is wound around the spiral groove 31. It is equal to the amount of transition of the winding and withdrawal positions of the wire 4.

  Since the engaging member 17 is fixed to the guide member 14 erected on the base 11, the winch cylinder 3 that is rotated by the transmission from the motor 2 changes according to the shift of the engaging position of the engaging member 17. It moves in the axial direction together with the gantry 10, and the positional relationship between the winding and drawing positions of the wire 4 and the lead-out holes 15 and 15 located on both sides of the engaging member 17 does not change. 4A and 4B are diagrams for explaining the operation of the stage apparatus according to the present invention, and FIGS. 4A and 4B show a state where the winding and drawing positions of the wire 4 are moved to the vicinity of both ends of the winch cylinder 3. FIG.

  As shown in this figure, when the winding and drawing positions of the wire 4 are shifted, the winch cylinder 3 is moved to the position shown in the drawing with the movement of the gantry 10 on the base 11, but the winding and winding of the wire 4 are performed. The drawing position does not change with respect to the base 11 and the guide member 14, and the lead-out position of the wire 4 from the guide member 14 is kept constant regardless of the rotation of the winch cylinder 3.

  Therefore, as shown in FIGS. 1 and 4, when the electric winch 1 is installed so that the guide member 14 faces the entrance side of the moving path 6 set on the stage 5, the electric winch 1 is wound around the winch body 3. The wire 4 can be introduced without being inclined with respect to the movement path 6. Since this introduction posture does not change over the entire rotation range of the winch cylinder 3, the wire 4 can be wound and pulled out stably, and a large amount on the stage 5 taken along the movement path 6 can be obtained. There is no risk of hindering the loading and unloading of the tool 7.

  The gantry 10 on which the winch cylinder 3 and the motor 2 are mounted is constituted by a frame as described above. Accordingly, the weight can be reduced while securing the strength, and the gantry 10 can be smoothly moved on the base 11. As described above, the base 11 can also be configured as a frame. In this case, the entire electric winch 1 can be reduced in weight, and the labor required for transportation and installation can be reduced. The gantry 10 and the base 11 configured as a frame also prevent foreign matter from contacting the motor 2 and the winch cylinder 3, thereby preventing malfunctions due to accidental contact accidents and improving safety. Can be achieved.

The engaging member 17 is fixed to the base 11 and can be provided at any position as long as it can be engaged with the spiral groove 31 on the peripheral surface of the winch cylinder 3, as shown in the embodiment. Thus, it is desirable to provide the guide member 14 for guiding the wire 4 led out from the winch cylinder 3. Although the engaging member 17 of the embodiment is illustrated as a simple plate material, a lateral force is applied along with the movement guide of the winch cylinder 3, so that it is reinforced by means such as a rib together with the guide member 14. However, it is desirable to configure so as to ensure sufficient strength. Further, since the movement of the gantry 10 is accompanied by the sliding contact of the engaging member 17 with the spiral groove 31 on the peripheral surface of the winch cylinder 3, the engaging member 17 applies heat treatment to at least the engaging portion at the tip, and the sliding contact is made. It is desirable to have a configuration that reduces the wear associated with the.

  The movement path 6 on the stage 5 is preferably constituted by a concave groove provided on the floor surface in order to prevent the wire 4 from being exposed on the floor surface. However, it is practically impossible to provide a groove on the floor of the existing stage 5. FIG. 5 is an explanatory diagram of a method for setting the movement path in such a case. As shown in the drawing, a pseudo floor 50 is laid on the floor surface of the existing stage 5 and the inside of the groove 51 formed in the pseudo floor 50 is shown. The moving path 6 is set by accommodating the wire 4 and connecting the moving table 8 movably held in the groove 51 in the middle of the wire 4. In this way, the stage apparatus according to the present invention can be applied without modifying the floor of the existing stage 5.

  On the upper surface of the illustrated moving table 8, fixing brackets 80, 80 having a flat plate shape are provided at an appropriate interval, and the lower part of the tool 7 indicated by a two-dot chain line in the drawing is brackets 80, 80. It is configured to be inserted and fixed in between. This fixing means is merely an example, and any appropriate fixing means employed in a general stage apparatus can be used.

  In the embodiment described above, the wire 4 wound around the winch cylinder 3 is passed through the lead-out holes 15 and 15 provided in the guide member 14, and arranged side by side in a horizontal plane. Alternatively, the wire 4 may be drawn tangentially from each of the positions and guided to the stage 5 at a position separated vertically by the diameter of the winch cylinder 3. In this case, for example, the wire 4 drawn from the upper position follows the movement path 6 set on the stage 5, and the wire 4 drawn from the lower position is led to the opposite side through the floor of the stage 5 and rotated around the horizontal axis. It is used in the form of being wound around the guide roller 41.

  Further, in the above embodiment, the gantry 10 on which the winch cylinder 3 is mounted is supported on the upper surface of the horizontally installed base 11, but is suspended and supported on the lower surface of the horizontally installed base 11. It is also possible to support it on the side surface of the base 11 placed vertically.

It is a top view which shows typically the use condition of the stage device which concerns on this invention. FIG. 2 is an enlarged cross-sectional view taken along line II-II in FIG. 1. It is a top view which shows the correspondence of a guide member and a winch cylinder. It is operation | movement explanatory drawing of the stage device which concerns on this invention. It is explanatory drawing of the setting method of a movement path | route. It is a top view which shows typically the use condition of the conventional stage apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric winch 2 Motor 3 Winch trunk 4 Wire 5 Stage 6 Movement path 7 Large tool 8 Moving stand
10 frame
11 base
14 Guide member
17 Engagement member
31 spiral groove
50 artificial floor
51 groove

Claims (5)

The wire wound and held in the spiral groove provided on the peripheral surface of the winch cylinder is led out between the connecting parts at both ends and connected to the tool on the stage, and the lead of the leading part according to the rotation of the winch cylinder In the stage apparatus for carrying the tool in and out of the stage by the wire wound around the spiral groove on one side and drawn out from the spiral groove on the other side,
A gantry on which the winch cylinder is mounted together with a motor for rotational driving;
A base that supports the gantry so as to be movable in the axial direction of the winch cylinder;
And an engaging member that is fixed to the base and engages with a spiral groove that is exposed when the wire is drawn out on a peripheral surface of the winch cylinder between the winding position and the drawing position of the wire. Stage equipment.   The stage apparatus according to claim 1, wherein the gantry is configured as a frame surrounding the winch cylinder and the motor.   The stage apparatus according to claim 1 or 2, wherein the engagement member is fixed to a guide member provided on the base so as to guide a wire led out from the winch cylinder.   The wire led out from the winch cylinder is extended along a movement path set on the floor surface of the stage, and a large tool connected in the middle of the wire is moved along the floor surface. The stage device according to any one of claims 1 to 3.   5. The stage according to claim 4, wherein the moving path is a groove recessed in a pseudo floor laid on the floor surface of the stage, and the stage includes a moving table that is movably held in the groove and connected to the wire. apparatus.

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