A multi-level lifting circular stage

Abstract

The present invention provides a multi-level lifting circular stage, which relates to the technical field of stage equipment, including a first annular frame, a second annular frame arranged in the first annular frame, and a movable platform arranged in the second annular frame, a rotating rod is arranged at the bottom end of the inner wall of the first annular frame, the rotating rod rotates around the connection with the first annular frame, the first annular frame is provided with a pull rope and a winch for pulling the pull rope, the end of the rotating rod away from the first annular frame is provided with a rotating wheel for facilitating the passage of the pull rope, the rotating rod is connected to the second annular frame through a supporting rod, the bottom end of the movable platform is provided with a guide wheel for guiding the passage of the pull rope, and the inner wall of the second annular frame is provided with a fixed anchor for fixing the end of the pull rope. The multi-level lifting circular stage of the present invention has a simple structure, is easy to adjust, can be lifted in two or even multiple stages, and has a high degree of controllability, strong stability, high safety, and good stage effect.

Description

Technical Field

[0001] The present invention relates to the technical field of stage equipment.

[0002] In particular, the present invention relates to a multi-level lifting circular stage. Background Art

[0003] With the increasing enrichment of cultural life, people have higher and higher requirements for stage effects in performances. In order to make performing arts produce extraordinary special effects, many modern large-scale performance venues have installed various types of stage machinery and equipment, which play the role of adding the finishing touch and genius to the stage performances of the plays.

[0004] In modern stage design, in order to create a lively three-dimensional performance effect, the traditional static stage is gradually abandoned and replaced by a liftable stage. In some large and medium-sized theaters, since the conditions required for the theater have been considered in the early planning, it is only necessary to construct according to the drawings during the civil construction. The set stage area can well meet the requirements of theater performances, while some small theaters are restricted by various conditions. The area of ​​the stage area configured in the theater is fixed and limited, and the stage has no conditions to configure the lifting platform. It is impossible to change the performance form and increase the stage area, especially the stage has a poor sense of hierarchy and poor stage effect. Even if a simple lifting platform is installed, the lifting range is uncontrollable, and the stage mass is large, the lifting platform is low in stability, and it cannot be installed on a simple stage, and the stage safety is poor.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable multi-level lifting circular stage. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-stage lifting circular stage which has a simple structure, is easy to adjust, can be lifted in two or even multiple stages, has a high degree of controllability, is stable, has a high degree of safety, and has good stage effects.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A multi-level lifting circular stage comprises a first annular frame, a second annular frame arranged in the first annular frame and a movable platform arranged in the second annular frame, a rotating rod is arranged at the bottom end of the inner wall of the first annular frame, the rotating rod rotates around the connection with the first annular frame, the first annular frame is provided with a pull rope and a winch for pulling the pull rope, the end of the rotating rod away from the first annular frame is provided with a rotating wheel for facilitating the passage of the pull rope, the rotating rod is connected to the second annular frame through a supporting rod, the bottom end of the movable platform is provided with a guide wheel for guiding the passage of the pull rope, and the inner wall of the second annular frame is provided with a fixing anchor for fixing the end of the pull rope.

[0009] As a preferred embodiment of the present invention, the height of the winch is not lower than the height of the rotating rod.

[0010] As a preferred embodiment of the present invention, the number of the second annular frame is at least one.

[0011] As a preferred embodiment of the present invention, a fixing anchor for fixing the end of the pull rope is provided on the inner wall of the second ring-shaped frame close to the movable platform among the plurality of second ring-shaped frames.

[0012] As a preferred embodiment of the present invention, the support rod rotates around the connection with the rotating rod, and a sliding groove for facilitating the sliding of the support rod is provided at the bottom end of the second annular frame.

[0013] As a preferred embodiment of the present invention, a first protrusion for connecting with the first annular frame is provided on the outer side wall of the second annular frame, and a first limiting groove for facilitating the sliding of the first protrusion is provided on the inner wall of the first annular frame.

[0014] As a preferred embodiment of the present invention, the number of the first protrusion is at least one, and the number of the first limiting groove is at least one.

[0015] As a preferred embodiment of the present invention, the first limiting groove is extended along the vertical direction.

[0016] As a preferred embodiment of the present invention, a second protrusion for connecting with the movable platform is provided on the inner side wall of the second annular frame, and a second limiting groove for facilitating the sliding of the second protrusion is provided on the outer side wall of the movable platform.

[0017] As a preferred embodiment of the present invention, the number of the second protrusion is at least one, and the number of the second limiting groove is at least one.

[0018] As a preferred embodiment of the present invention, the second limiting groove is extended along the vertical direction.

[0019] As a preferred embodiment of the present invention, the number of the rotating rod is at least one.

[0020] As a preferred embodiment of the present invention, the rotating rod is connected to the first annular frame through a fixing member, and the rotating rod rotates around the connection with the fixing member.

[0021] As a preferred embodiment of the present invention, the number of the pull rope and the number of the winch are at least one.

[0022] As a preferred embodiment of the present invention, the number of the guide wheel and the number of the fixed anchor are at least one.

[0023] As a preferred embodiment of the present invention, the fixing anchor is connected to a telescopic rod extending in a vertical direction, and the telescopic rod is connected to the bottom end of the second annular frame through a telescopic cylinder.

[0024] The multi-stage lifting circular stage of the present invention has the advantages of simple structure, easy adjustment, two-stage or even multi-stage lifting, high lifting controllability, strong stability, high safety, and good stage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a multi-level lifting circular stage before it is lifted up;

[0026] Figure 2 It is a schematic diagram of the structure of a multi-level lifting circular stage after it is lifted up according to the present invention;

[0027] Figure 3 It is a schematic diagram of a top view of an embodiment of a multi-level lifting circular stage of the present invention;

[0028] Figure 4 It is a schematic diagram of a top view of another embodiment of a multi-level lifting circular stage of the present invention;

[0029] Figure 5 It is a schematic diagram of the top view of the structure of the first annular frame of a multi-stage lifting circular stage of the present invention;

[0030] Figure 6 It is a structural schematic diagram of a second annular frame of a multi-stage lifting circular stage of the present invention;

[0031] Figure 7 It is a schematic diagram of the top view of the structure of the second annular frame of a multi-stage lifting circular stage of the present invention;

[0032] In the figure: 1, first annular frame, 11, rotating rod, 111, rotating wheel, 112, supporting rod, 12, pulling rope, 13, winch, 14, first limiting groove, 2, second annular frame, 21, fixed anchor, 211, telescopic rod, 212, telescopic cylinder, 22, slide groove, 23, first protrusion, 24, second protrusion, 3, movable platform, 31, guide wheel, 32, second limiting groove. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] With the increasing enrichment of cultural life, people have higher and higher requirements for stage effects in performances. In modern stage design, in order to create a lively and three-dimensional performance effect, the traditional static stage is gradually abandoned and replaced by a liftable stage. In some large and medium-sized theaters, since the conditions required for the theater have been considered in the early planning, it is only necessary to construct according to the drawings during civil construction. The set stage area can well meet the requirements of theater performances, while some small theaters are restricted by various conditions. The area of ​​the stage area configured in the theater is fixed and limited, and the stage has no conditions to configure the lifting platform. It is impossible to change the performance form and increase the stage area, especially the stage has poor layering and poor stage effect. Even if a simple lifting platform is installed, the lifting range is uncontrollable, and the stage mass is large, the lifting platform is low in stability, and it cannot be installed on a simple stage, and the stage safety is poor.

[0035] Embodiment 1: Figures 1 to 7 The figure is only one of the embodiments of the present invention, a multi-level lifting circular stage, including a first ring-shaped frame 1, a second ring-shaped frame 2 arranged in the first ring-shaped frame 1 and a movable platform 3 arranged in the second ring-shaped frame 2, a rotating rod 11 is arranged at the bottom end of the inner wall of the first ring-shaped frame 1, the rotating rod 11 rotates around the connection with the first ring-shaped frame 1, the first ring-shaped frame 1 is provided with a pull rope 12 and a winch 13 for pulling the pull rope 12, the end of the rotating rod 11 away from the first ring-shaped frame 1 is provided with a rotating wheel 111 for facilitating the passage of the pull rope 12, the rotating rod 11 is connected to the second ring-shaped frame 2 through a supporting rod 112, the bottom end of the movable platform 3 is provided with a guide wheel 31 for guiding the pull rope 12 to pass, and the inner wall of the second ring-shaped frame 2 is provided with a fixing anchor 21 for fixing the end of the pull rope 12.

[0036] In the present invention, the second annular frame 2 is arranged inside the annular shape of the first annular frame 1, and the movable platform 3 is arranged inside the annular shape of the second annular frame 2. The pull rope 12 of the first annular frame 1 extends from the winch 13, passes through the rotating wheel 111 of the rotating rod 11 and the guide wheel 31 at the bottom of the movable platform 3 in sequence, and is finally fixed to the fixed anchor 21 on the inner wall of the second annular frame 2. When the winch 13 of the first annular frame 1 retracts the pull rope 12, it drives the pull rope 12 to transmit, and the rotating rod 11 rotates around the connection with the first annular frame 1. The rotation of the rotating rod 11 drives the support rod 112 and the second annular frame 2 to rise upward, and the tension of the pull rope 12 pulls the guide wheel 31 and the movable platform 3 to rise, and finally the stage is multi-leveled, as shown in FIG. Figure 2On the contrary, when the winch 13 releases the pull rope 12, the second ring frame 2 and the movable platform 3 are lowered into the first ring frame 1 and are hidden, as shown in FIG. Figure 1 By adjusting the length of the pull rope 12 by the winch 13, the lifting and lowering of the multi-level lifting circular stage of the present invention can be controlled, and the lifting and lowering is highly controllable, stable, and has a good stage effect.

[0037] First, the structure of the first ring-shaped frame 1. A rotating rod 11 is provided at the bottom end of the inner wall of the first ring-shaped frame 1. The rotating rod 11 rotates around the connection with the first ring-shaped frame 1. The first ring-shaped frame 1 is provided with a pull rope 12 and a winch 13 for pulling the pull rope 12. The end of the rotating rod 11 away from the first ring-shaped frame 1 is provided with a rotating wheel 111 for facilitating the passage of the pull rope 12. Here, the height of the winch 13 is higher than the height of the rotating rod 11. When the winch 13 pulls the pull rope 12, the rotating wheel 111 at the end of the rotating rod 11 away from the first ring-shaped frame 1 is naturally driven to rise, so that the rotating rod 11 rotates around the connection with the first ring-shaped frame 1.

[0038] Next is the structure of the second annular frame 2. The rotating rod 11 is connected to the second annular frame 2 through a support rod 112. The support rod 112 rotates around the connection with the rotating rod 11. The bottom end of the second annular frame 2 is provided with a slide groove 22 for facilitating the sliding of the support rod 112. Here, the support rod 112 is arranged vertically with the slide groove 22 to ensure that the second annular frame 2 can be effectively supported to rise when the rotating rod 11 rotates.

[0039] According to the lever principle, power × power arm = resistance × resistance arm, that is, F1*L1=F2*L2, here, the power is the pulling force of the winch 13, the power arm is the distance between the rotating wheel 111 and the inner wall of the first annular frame 1, that is, the length of the rotating rod 11, the resistance is the gravity of the second annular frame 2 and the support rod 112, and the resistance arm is the distance between the support rod 112 and the inner wall of the first annular frame 1. Here, the power arm (the length of the rotating rod 11) is greater than the resistance arm (the distance between the support rod 112 and the inner wall of the first annular frame 1), then the power is less than the resistance, that is, the pulling force of the winch 13 can be less than the gravity of the movable platform 3 (the gravity of the support rod 112 is small and can be ignored), then the winch 13 with smaller power can lift the second annular frame 2 with larger mass, the lifting effect is good, and the stage safety is high.

[0040] It should be noted that the number of the second annular frame 2 is at least one. If the number of the second annular frame 2 is one, the top view of the present invention is as shown in FIG. Figure 3 As shown, the present invention is a two-stage lifting stage; if there are two or more second annular frames 2, the top view of the present invention is as shown in Figure 4As shown, the present invention is a multi-level (greater than or equal to three levels) lifting stage, and obviously, if there are two or more second annular frames 2, each second annular frame 2 is connected to the rotating rod 11 through a support rod 112. When the rotating rod 11 rotates, the support rod 112 that is farther away from the first annular frame 1 rises more, that is, the second annular frame 2 that is farther away from the first annular frame 1 rises higher, forming a multi-level lifting stage that increases step by step.

[0041] Finally, the structure of the movable platform 3 is described. The bottom end of the movable platform 3 is provided with a guide wheel 31 for guiding the pull rope 12 to pass through, and the inner wall of the second ring frame 2 is provided with a fixed anchor 21 for fixing the end of the pull rope 12. The pull rope 12 extends from the winch 13, passes through the rotating wheel 111 of the rotating rod 11 and the guide wheel 31 at the bottom of the movable platform 3 in sequence, and is finally fixed to the fixed anchor 21 on the inner wall of the second ring frame 2. Since the heights of the winch 13 and the guide wheel 31 are both higher than the height of the rotating wheel 111, they will naturally drive the rotating rod 11 to rotate, and since the pull rope 12 passes through the guide wheel 31 after passing through the rotating wheel 111 and then connects with the fixed anchor 21, when the pull rope 12 is tightened, the pull rope 12 will be straightened until the rotating wheel 111, the guide wheel 31 and the fixed anchor 21 are almost straightened into a straight line, and at this time, the guide wheel 31 naturally drives the movable platform 3 to rise.

[0042] Of course, due to the gravity of the movable platform 3 itself, the rotating wheel 111, the guide wheel 31 and the fixed anchor 21 are not in an absolute straight line, so the toughness requirement of the pull rope 12 is very high, and it is best that the pull rope 12 is a hinged pull rope.

[0043] Of course, if there are multiple second annular frames 2 , the inner wall of the second annular frame 2 close to the movable platform 3 among the multiple second annular frames 2 is provided with a fixing anchor 21 for fixing the end of the pull rope 12 .

[0044] The multi-stage lifting circular stage of the present invention has a simple structure, is easy to adjust, can be lifted in two or even multiple stages, has a high degree of lift controllability, strong stability, high safety, and good stage effect.

[0045] Embodiment 2, still as Figures 1 to 7 The figure is only one embodiment of the present invention. In order to make the lifting effect of the multi-level lifting circular stage of the present invention better and more stable, the present invention also has the following designs:

[0046] Firstly, a first protrusion 23 for connecting with the first annular frame 1 is provided on the outer wall of the second annular frame 2, and a first limiting groove 14 for facilitating the sliding of the first protrusion 23 is provided on the inner wall of the first annular frame 1. Of course, the first limiting groove 14 is extended in the vertical direction.

[0047] Moreover, the number of the first protrusion 23 is at least one, and the number of the first limiting groove 14 is at least one.

[0048] Similarly, a second protrusion 24 for connecting with the movable platform 3 is provided on the inner wall of the second annular frame 2, and a second limiting groove 32 for facilitating the sliding of the second protrusion 24 is provided on the outer wall of the movable platform 3. The second limiting groove 32 is extended in the vertical direction.

[0049] Moreover, the number of the second protrusion 24 is at least one, and the number of the second limiting groove 32 is at least one.

[0050] The multiple groups of first protrusions 23 and second protrusions 24 effectively connect the first annular frame 1, the second annular frame 2 and the movable platform 3, and effectively limit the connection, so that the second annular frame 2 and the movable platform 3 are stably arranged in the first annular frame 1. The first limiting groove 14 and the second limiting groove 32 are both extended in the vertical direction to ensure that the second annular frame 2 and the movable platform 3 can only be lifted up and down vertically, and the stability is higher.

[0051] Then, the number of the rotating rod 11 is at least one, and the rotating rod 11 is connected to the first annular frame 1 through a fixing member, and the rotating rod 11 rotates around the connection with the fixing member.

[0052] Furthermore, the number of the pull rope 12 and the winch 13 is at least one, each rotating rod 11 is connected by a pull rope 12 and a winch 13, the number of the guide wheel 31 and the fixed anchor 21 is at least one, each pull rope 12 is connected to a winch 13, a rotating rod 11 guide wheel 31 and a fixed anchor 21, and each pull rope 12 does not interfere with each other, preventing the pull ropes 12 from being tangled together and affecting the stage lifting.

[0053] Finally, the fixed anchor 21 is connected to a telescopic rod 211 extending in the vertical direction, and the telescopic rod 211 is connected to the bottom end of the second annular frame 2 through a telescopic cylinder 212. That is to say, the telescopic cylinder 212 controls the extension and retraction of the telescopic rod 211, which can control the height of the fixed anchor 21, thereby limiting the maximum lifting height of the movable platform 3 relative to the second annular frame 2, so that the lifting and lowering range of the movable platform 3 can also be controlled.

[0054] The multi-stage lifting circular stage of the present invention has a simple structure, is easy to adjust, can be lifted in two or even multiple stages, has a high degree of lift controllability, strong stability, high safety, and good stage effect.

[0055] The present invention is not limited to the above specific implementations, and the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-level lifting circular stage, characterized in that: The invention comprises a first annular frame (1), a second annular frame (2) arranged in the first annular frame (1), and a movable platform (3) arranged in the second annular frame (2), wherein a rotating rod (11) is arranged at the bottom end of the inner wall of the first annular frame (1), and the rotating rod (11) rotates around the connection with the first annular frame (1), the first annular frame (1) is provided with a pull rope (12) and a winch (13) for pulling the pull rope (12), and a rotating wheel (111) for facilitating the passage of the pull rope (12) is arranged at the end of the rotating rod (11) away from the first annular frame (1), and the rotating rod (11) is provided with a rotating wheel (111) for facilitating the passage of the pull rope (12). 1) connected to the second annular frame (2) via a support rod (112), the bottom end of the movable platform (3) is provided with a guide wheel (31) for guiding the pull rope (12) to pass through, the inner wall of the second annular frame (2) is provided with a fixing anchor (21) for fixing the end of the pull rope (12), the support rod (112) rotates around the connection with the rotating rod (11), the bottom end of the second annular frame (2) is provided with a slide groove (22) for facilitating the sliding of the support rod (112), the number of the rotating rod (11) is at least one, and the number of the pull rope (12) and the winch (13) are both at least one; The pull rope of the first ring frame is extended from the winch, passes through the rotating wheel of the rotating rod and the guide wheel at the bottom of the movable platform in sequence, and is finally fixed to the fixed anchor on the inner wall of the second ring frame; when the pull rope is tightened, the rotating rod is driven to rotate and the second ring frame is driven to rise, and because the pull rope passes around the rotating wheel and then passes through the guide wheel to connect with the fixed anchor, when the pull rope is tightened, the pull rope will be straightened, and the guide wheel drives the movable platform to rise; The length of the rotating rod is greater than the distance between the supporting rod and the inner wall of the first annular frame, so that the pulling force of the hoist is smaller than the gravity of the movable stage, the lifting effect is good, and the stage safety is high.

2. A multi-level lifting circular stage according to claim 1, characterized in that: The number of the second annular frame (2) is at least one.

3. The multi-level lifting circular stage according to claim 1, characterized in that: A first protrusion (23) for connecting to the first annular frame (1) is provided on the outer wall of the second annular frame (2), and a first limiting groove (14) for facilitating the sliding of the first protrusion (23) is provided on the inner wall of the first annular frame (1).

4. The multi-level lifting circular stage according to claim 3, characterized in that: The number of the first protrusion (23) is at least one, and the number of the first limiting groove (14) is at least one.

5. The multi-level lifting circular stage according to claim 1, characterized in that: The inner wall of the second annular frame (2) is provided with a second protrusion (24) for connecting with the movable platform (3), and the outer wall of the movable platform (3) is provided with a second limiting groove (32) for facilitating the sliding of the second protrusion (24).

6. The multi-level lifting circular stage according to claim 5, characterized in that: The number of the second protrusion (24) is at least one, and the number of the second limiting groove (32) is at least one.

7. The multi-level lifting circular stage according to claim 1, characterized in that: The number of the guide wheel (31) and the number of the fixing anchor (21) are both at least one.

8. The multi-level lifting circular stage according to claim 1, characterized in that: The fixing anchor (21) is connected to a telescopic rod (211) extending in a vertical direction, and the telescopic rod (211) is connected to the bottom end of the second annular frame (2) via a telescopic cylinder (212).

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