A stable lifting stage frame

Abstract

The present invention provides a stable lifting stage frame, which relates to the technical field of stage equipment, including a pit seat, a movable rod arranged in the pit seat, and a movable platform above the movable rod arranged on the movable rod, the movable rod including a rotating rod and a rotating shaft arranged at the end of the rotating rod, the rotating rod rotates around the rotating shaft, a pull rope and a winch for pulling the pull rope are arranged on the pit seat, both ends of the rotating rod are provided with rotating wheels for convenient passage of the pull rope, the rotating rod is connected to the movable platform through a connecting rod, the connecting rod rotates around the connecting part with the rotating rod, and a slide groove for convenient sliding of the connecting rod is arranged at the bottom of the movable platform. The stable lifting stage frame of the present invention has a simple structure and is easy to adjust. The stage lifting can be completed by using a winch and a pull rope, the lifting effect is good, and the stage safety is high.

Description

Technical Field

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

[0002] More particularly, the present invention relates to a stable lifting stage frame. 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 the stroke of genius in the stage performances of the repertoire.

[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, the construction of civil engineering can be carried out according to the drawings. 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 a lifting platform. It is impossible to change the performance form and increase the stage area. 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 the stage safety is poor.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and stable lifting stage frame. Summary of the invention

[0006] The object of the present invention is to provide a stable lifting stage frame which has a simple structure, is easy to adjust, can complete stage lifting by using a winch and a pull rope, has a good lifting effect, and has high stage safety.

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

[0008] A stable lifting stage frame comprises a pit seat, a movable rod arranged in the pit seat and a movable platform arranged above the movable rod, the movable rod comprises a rotating rod and a rotating shaft arranged at the end of the rotating rod, the rotating rod rotates around the rotating shaft, a pull rope and a winch for pulling the pull rope are arranged on the pit seat, both ends of the rotating rod are provided with rotating wheels for facilitating the passage of the pull rope, the rotating rod is connected to the movable platform through a connecting rod, the connecting rod rotates around the connection part with the rotating rod, and a sliding groove for facilitating the sliding of the connecting rod is arranged at the bottom of the movable platform.

[0009] As a preferred embodiment of the present invention, the number of the hoist is at least one.

[0010] As a preferred embodiment of the present invention, the number of the hoists is two, and both ends of the pull rope are connected to the hoists.

[0011] As a preferred embodiment of the present invention, the side wall of the movable platform is provided with a limiting protrusion, and the inner wall of the bottom pit seat is provided with a limiting groove for facilitating the sliding of the limiting protrusion.

[0012] As a preferred embodiment of the present invention, the limiting groove is extended along the vertical direction.

[0013] As a preferred embodiment of the present invention, the number of the limiting protrusion is at least one.

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

[0015] As a preferred embodiment of the present invention, the number of the rotating rod is at least one, and the number of the connecting rod and the sliding groove are at least one.

[0016] As a preferred embodiment of the present invention, at least a portion of the end of the rotating rod is arc-shaped.

[0017] As a preferred embodiment of the present invention, a trapezoidal block is provided at the end of the connecting rod close to the sliding groove.

[0018] As a preferred embodiment of the present invention, the upper surface of the trapezoidal block is horizontally arranged with the slide groove, and the upper surface of the trapezoidal block is vertically arranged with the connecting rod.

[0019] As a preferred embodiment of the present invention, a guide wheel for guiding the direction of the pull rope is provided on the bottom pit seat.

[0020] As a preferred embodiment of the present invention, at least a portion of the bottom end of the side wall of the movable platform is arc-shaped.

[0021] The beneficial effects of the stable lifting stage frame of the present invention are: simple structure, easy adjustment, stage lifting can be completed by using a winch and a pull rope, the lifting effect is good, and the stage safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a stable lifting stage frame before being raised according to the present invention;

[0023] Figure 2 It is a schematic structural diagram of a stable lifting stage frame after it is lifted up according to the present invention;

[0024] Figure 3 It is a partial structural schematic diagram of a pit seat of a stable lifting stage frame of the present invention;

[0025] Figure 4 A schematic top view of a movable rod of a stable lifting stage frame of the present invention;

[0026] Figure 5 It is a front view schematic diagram of a movable platform of a stable lifting stage frame of the present invention;

[0027] In the figure: 1, pit seat, 11, pull rope, 12, winch, 13, limit groove, 14, guide wheel, 2, movable rod, 21, rotating shaft, 22, rotating rod, 221, rotating wheel, 222, connecting rod, 223, trapezoidal block, 3, movable platform, 31, slide groove, 32, limit protrusion. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] 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 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 follow 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, so it is impossible to change the performance form and increase the stage area. Even if a simple lifting platform is installed, the lifting range is uncontrollable, and the stage quality is large, the lifting platform is low in stability, and the stage safety is poor.

[0030] Embodiment 1: Figures 1 to 5 The figure is only one of the embodiments of the present invention, a stable lifting stage frame, including a pit seat 1, a movable rod 2 arranged in the pit seat 1 and a movable platform 3 arranged above the movable rod 2, the movable rod 2 includes a rotating rod 22 and a rotating shaft 21 arranged at the end of the rotating rod 22, the rotating rod 22 rotates around the rotating shaft 21, a pull rope 11 and a winch 12 for pulling the pull rope 11 are arranged on the pit seat 1, both ends of the rotating rod 22 are provided with rotating wheels 221 for facilitating the passage of the pull rope 11, the rotating rod 22 is connected to the movable platform 3 through a connecting rod 222, the connecting rod 222 rotates around the connection part with the rotating rod 22, and a sliding groove 31 for facilitating the sliding of the connecting rod 222 is arranged at the bottom of the movable platform 3.

[0031] In the present invention, the movable platform 3 is arranged in the pit seat 1, and the movable rod 2 for lifting the movable platform 3 is arranged in the pit seat 1. The winch 12 on the pit seat 1 pulls the pull rope 11, and the pull rope 11 is transmitted on the rotating wheels 221 at both ends of the rotating rod 22 of the movable rod 2, and also pulls up the rotating rod 22 to rotate around the rotating shaft 21. During the rotation of the rotating rod 22, the connecting rod 222 rotates and rises accordingly, lifting the movable platform 3 to rise, and the lever effect is used when the rotating rod 22 lifts the movable platform 3. The lever arm of the rotating rod 22 is greater than the lever arm of the connecting rod 222. Then, the pulling force of the winch 12 can be less than the gravity of the movable platform 3, and the lifting is more convenient and stable, and it is easier to meet the needs of the lifting stage.

[0032] First, there is the pit seat 1. The movable rod 2 and the movable platform 3 are both arranged in the pit seat 1. In fact, the pit seat 1 is a base provided with a vertical tunnel, and the shape of the vertical tunnel can be cylindrical or cubic. It can be selected according to the site requirements and the shape of the movable platform 3 that needs to be lifted, and can meet the installation of any stage site. The pit seat 1 is provided with a pull rope 11 and a winch 12 for pulling the pull rope 11. The winch 12 retracts the length of the pull rope 11 to control the lifting height of the movable platform 3. The stage lifting is controllable and easy to adjust.

[0033] Next is the movable rod 2, which includes a rotating rod 22 and a rotating shaft 21 arranged at the end of the rotating rod 22. The rotating rod 22 rotates around the rotating shaft 21. Both ends of the rotating rod 22 are provided with rotating wheels 221 for facilitating the passage of the pull rope 11. The pull rope 11 extends from the winch 12 and passes through the rotating wheels 221 at both ends of the rotating rod 22. When the winch 12 is reeled in, the pull rope 11 is retracted, the rotating rod 22 rotates around the rotating shaft 21, and the end of the rotating rod 22 away from the rotating shaft 21 is lifted.

[0034] Finally, there is the movable platform 3. The rotating rod 22 is connected to the movable platform 3 through a connecting rod 222. The connecting rod 222 rotates around the connection portion with the rotating rod 22. A sliding groove 31 is provided at the bottom of the movable platform 3 to facilitate the sliding of the connecting rod 222. The rotating rod 22 rotates around the rotating shaft 21, and the end of the rotating rod 22 away from the rotating shaft 21 is lifted, which also causes the connecting rod 222 to be lifted. According to the lever principle, power × power arm = resistance × resistance arm, that is, F1*L1=F2*L 2. Here, the power is the pulling force of the winch 12, the power arm is the distance between the rotating wheel 221 of the rotating rod 22 away from the rotating shaft 21 and the rotating shaft 21, that is, the length of the rotating rod 22, the resistance is the gravity of the movable platform 3 and the movable rod, and the resistance arm is the distance between the connecting rod 222 and the rotating shaft 21. Here, the power arm (the length of the rotating rod 22) is greater than the resistance arm (the distance between the connecting rod 222 and the rotating shaft 21), then the power is less than the resistance, that is, the pulling force of the winch 12 can be less than the gravity of the movable platform 3 (the gravity of the movable rod 2 is small and can be ignored), then the winch 12 with smaller power can lift a larger movable stage, the lifting effect is good, and the stage safety is high.

[0035] Embodiment 2, still as Figures 1 to 5 The figure is only one embodiment of the present invention. In order to make the lifting effect of the stable lifting stage frame of the present invention better and more stable, the present invention also has the following designs:

[0036] First, the number of the hoist 12 is at least one. In fact, the number of the hoist 12 is two, and both ends of the pull rope 11 are connected to the hoist 12. That is to say, the pull rope 11 extends from the hoist 12, passes through the rotating wheels 221 at both ends of the rotating rod 22, and then extends to another hoist 12 again, so that two hoists 12 can control the rotation of one rotating rod 22 at the same time, and two hoists 12 control the lifting and lowering of the movable stage 3 at the same time, and the lifting and lowering of the movable stage is more stable and efficient. Here, the two hoists 12 tighten the pull rope 11 at the same time, and the lifting speed of the movable stage 3 is doubled; the two hoists 12 release the rope at the same time, and the lowering speed of the movable stage 3 is doubled; if one of the two hoists 12 tightens and the other releases, the speed difference between the fast hoist 12 retracting and releasing the pull rope 11 controls the lifting and lowering speed of the movable stage 3, so that the stage lifting speed can be avoided from being too fast and effective compensation can be performed.

[0037] Then, the side wall of the movable platform 3 is provided with a limiting protrusion 32, and the inner wall of the bottom pit seat 1 is provided with a limiting groove 13 for facilitating the sliding of the limiting protrusion 32. The limiting protrusion 32 slides on the limiting groove 13, and the limiting groove 13 is extended in the vertical direction to facilitate the vertical lifting of the movable platform 3 in the vertical direction, and the number of the limiting protrusion 32 is at least one, and the limiting protrusion 32 is evenly arranged around the movable platform 3 to ensure the stability of the connection between the movable platform 3 and the bottom pit seat 1. Of course, in order to facilitate the sliding of the limiting protrusion 32, the number of the limiting groove 13 is at least one, and each limiting protrusion 32 has a limiting groove 13 to slide.

[0038] Then, the number of the rotating rod 22 is at least one, and the number of the connecting rod 222 and the sliding groove 31 is at least one. A plurality of rotating rods 22 are evenly arranged around the rotating shaft 21, and each rotating rod 22 is connected to a pull rope 11. When the winch 12 lifts the pull rope 11, the plurality of rotating rods 22 rotate simultaneously to lift the movable platform 3 together.

[0039] In addition, at least a portion of the end of the rotating rod 22 is arc-shaped. The end of the rotating rod 22 close to the rotating shaft 21 is arc-shaped to prevent multiple rotating rods 22 from getting stuck, and the rotating rod 22 can rotate flexibly. The end of the rotating rod 22 away from the rotating shaft 21 is arc-shaped to prevent the rotating rod 22 from being damaged when the rotating rod 22 rotates to touch the movable platform 3.

[0040] Of course, at least a portion of the bottom end of the side wall of the movable platform 3 is arc-shaped, which is convenient for reducing friction when the rotating rod 22 rotates to touch the movable platform 3, and is convenient for the pull rope 11 to pass around the bottom end of the side wall of the movable platform 3. The lifting of the movable platform 3 is more stable and safe.

[0041] In addition, a trapezoidal block 223 is provided at the end of the connecting rod 222 near the slide groove 31. The upper surface of the trapezoidal block 223 is horizontally arranged with the slide groove 31, and the upper surface of the trapezoidal block 223 is vertically arranged with the connecting rod 222, so as to ensure that the upper surface of the trapezoidal block 223 is always in contact with the plane of the slide groove 31, and further ensure that the connecting rod 222 and the slide groove 31 remain vertically arranged, so that when the connecting rod 222 is rotated, the movable platform 3 is effectively raised.

[0042] Finally, the pit seat 1 is provided with a guide wheel 14 for guiding the direction of the pull rope 11. The guide wheel 14 is arranged at the edge of the pit seat 1 to prevent the pull rope 11 from rubbing against the edge of the pit seat 1, causing the pull rope 11 to wear and causing the movable platform 3 to lose tension and fall.

[0043] The stable lifting stage frame of the present invention has a simple structure and is easy to adjust. The stage lifting can be completed by using a winch and a pull rope, and the lifting effect is good and the stage safety is high.

[0044] 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 stable lifting stage frame, characterized in that: The invention comprises a pit seat (1), a movable rod (2) arranged in the pit seat (1), and a movable platform (3) arranged above the movable rod (2), wherein the movable rod (2) comprises a rotating rod (22) and a rotating shaft (21) arranged at the end of the rotating rod (22), the rotating rod (22) rotates around the rotating shaft (21), a pull rope (11) and a winch (12) for pulling the pull rope (11) are arranged on the pit seat (1), both ends of the rotating rod (22) are provided with rotating wheels (221) for facilitating the passage of the pull rope (11), the rotating rod (22) is connected to the movable platform (3) through a connecting rod (222), the connecting rod (222) rotates around the connection portion with the rotating rod (22), and a sliding groove (31) for facilitating the sliding of the connecting rod (222) is arranged at the bottom of the movable platform (3); The length of the rotating rod is greater than the distance between the connecting rod and the rotating shaft, so that the pulling force of the winch is less than the gravity of the movable platform; The number of the rotating rod (22) is at least one, the number of the connecting rod (222) and the number of the sliding groove (31) are at least one; the number of the hoisting machines (12) is two, and both ends of the pull rope (11) are connected to the hoisting machines (12); If two winches tighten the ropes at the same time, the lifting speed of the movable platform will be doubled; if two winches release the ropes at the same time, the lowering speed of the movable platform will be doubled; if one winch tightens and the other loosens, the speed difference between the ropes of the faster winch will be used to control the lifting and lowering speed of the movable platform, which can avoid the stage from being raised or lowered too quickly and provide effective compensation.

2. A stable lifting stage frame according to claim 1, characterized in that: The side wall of the movable platform (3) is provided with a limiting protrusion (32), and the inner wall of the bottom pit seat (1) is provided with a limiting groove (13) for facilitating the sliding of the limiting protrusion (32).

3. A stable lifting stage frame according to claim 2, characterized in that: The number of the limiting protrusion (32) is at least one.

4. A stable lifting stage frame according to claim 2, characterized in that: The number of the limiting groove (13) is at least one.

5. The stable lifting stage frame according to claim 1, characterized in that: A trapezoidal block (223) is provided at the end of the connecting rod (222) close to the sliding groove (31).

6. The stable lifting stage frame according to claim 1, characterized in that: The bottom pit seat (1) is provided with a guide wheel (14) for guiding the direction of the pull rope (11).

7. The stable lifting stage frame according to claim 1, characterized in that: At least a portion of the bottom end of the side wall of the movable platform (3) is arc-shaped.

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