Lifting stage structure and noise reduction processing method thereof

Abstract

The invention relates to a lifting stage structure and a noise reduction processing method thereof.The lifting stage structure comprises a plurality of stages arranged on the ground, pit bases are arranged among the stages, and lifting tables are arranged in the pit bases; the lifting table is composed of a bottom plate, a plurality of telescopic rods and a lifting plate, the bottom ends of the telescopic rods are all fixedly arranged at the top of the bottom plate, and the lifting plate is fixedly arranged at the top ends of the telescopic rods; the driving assembly is arranged on the bottom plate and is used for driving the telescopic rod to telescopically move and driving the lifting plate to lift; the plurality of protection mechanisms are arranged on the stage around the pit base, are used in cooperation with the driving assembly, and are used for blocking when a gap is formed between the lifting plate and the stage after the lifting plate is lifted, preventing personnel from falling below the lifting plate and limiting the extending telescopic rods in the protection process; the problems that certain noise is generated when teeth collide with one another in the transmission lifting process of an existing stage lifting platform in a chain, gear and rack mode and the like, and the watching and listening effects are affected are solved.

Description

Technical Field

[0001] The invention belongs to the field of stage equipment and relates to a lifting stage structure and a noise reduction processing method thereof. Background Art

[0002] Generally, when a performance is being performed on stage, in order to achieve a well-defined performance effect, the stage surface needs to be set up in advance. The traditional stage setting requires manual construction of stage frames of different levels to form a staggered stage effect. When switching between different scenes and performing on stage, transitions, linking scenes, and switching of stage sets take a long time, which affects the viewing experience and greatly limits the form of performance.

[0003] Stage machinery is a special mechanical equipment used for performance stages and serving performing arts and stage art. The functions and roles of stage machinery have been greatly enriched and developed with the development of stage machinery technology, making stage machinery an indispensable performance means for stage art. For example, a lifting stage can drive the actors to rise and fall.

[0004] However, the existing lifting platform usually adopts the transmission lifting method such as chain gear rack, and due to the gap between them, a certain noise will be generated when the teeth collide with each other, which affects the viewing and listening effect. Summary of the invention

[0005] In view of this, the present invention provides a lifting stage structure and a noise reduction method thereof in order to solve the problem that when the teeth of the existing stage lifting platform collide with each other during the transmission and lifting process using chains, gears, racks, etc., a certain noise is generated, which affects the viewing and listening effects.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A lifting stage structure comprises a plurality of stages arranged on the ground, a pit seat is arranged between the plurality of stages, and a lifting platform is arranged in the pit seat;

[0008] The lifting platform is composed of a bottom plate, a plurality of telescopic rods and a lifting plate, the bottom ends of the plurality of telescopic rods are fixed on the top of the bottom plate, and the lifting plate is fixed on the top ends of the plurality of telescopic rods;

[0009] A driving assembly is arranged on the bottom plate, and is used to drive the telescopic rod to move in a telescopic manner, thereby driving the lifting plate to move in a lifting manner;

[0010] Multiple protective mechanisms are respectively arranged on the stage around the pit seat and are used in conjunction with the driving assembly to block the gap formed between the lifting platform and the stage after the lifting platform is raised to prevent people from falling under the lifting platform and to limit the extended telescopic rod during the protection process.

[0011] Furthermore, the telescopic rod includes a first set of rods, a second set of rods is slidably arranged inside the first set of rods, a sliding rod is slidably arranged inside the second set of rods, the top of the sliding rod is fixedly connected to the lifting plate, and the bottom end of the first set of rods is fixedly connected to the bottom plate.

[0012] Furthermore, the driving assembly includes two first rotating seats fixedly arranged on the top of the base plate, a same rotating shaft is rotatably provided between the two first rotating seats, two groups of first storage rollers are fixedly sleeved on the outer wall of the rotating shaft, two groups of first steel wire ropes are fixedly arranged and wound around the outer wall of the first storage roller, first pulleys are rotatably provided on both sides of the first set of rods, one end of the first steel wire rope passes around the first pulley and is fixedly connected to the second set of rods, and is used to drive the second set of rods to move upward in the first set of rods, a first hydraulic motor is fixedly provided on one side of one of the first rotating seats, an output end of the first hydraulic motor is fixedly connected to the rotating shaft, and the oil inlet and outlet ends of the first hydraulic motor are connected to the hydraulic power station outside the stage through pipelines.

[0013] Furthermore, second pulleys are rotatably provided on both sides of the second set of rods, two sets of second steel wire ropes are fixedly provided on the top of the first set of rods, and the other ends of the second steel wire ropes are passed around the second pulleys and fixedly connected to the sliding rods.

[0014] Furthermore, the protective mechanism includes a fixed platform fixed on the stage, a connecting plate is provided on the top of the fixed platform, two second rotating seats are fixedly provided on one side of the connecting plate, a second storage roller is rotatably provided between the two second rotating seats, a connecting cloth is fixed and wrapped around the outer wall of the second storage roller, the other end of the connecting cloth is fixedly connected to the lifting plate, a second hydraulic motor is fixedly provided on one side of one of the second rotating seats, the output end of the second hydraulic motor is fixedly connected to the second storage roller, the oil inlet and outlet ends of the second hydraulic motor are connected to the hydraulic power station outside the stage through pipelines, which are used to control the second hydraulic motor to start, stop and retract the connecting cloth, and a limiting component for fixing the telescopic rod is provided on one side of the connecting plate to prevent the lifting plate from falling due to the breakage of the first steel wire rope.

[0015] The cam is secured to the platform by a spring, and the two ends of the second spring are secured on a sled and to the platform by a spring.

[0016] Furthermore, a fixing plate is fixedly provided at one end of the front and rear groups of extension rods, two second guide rods are slidably provided through one side of the fixing plate, the same mounting block is fixedly provided at one end of the two second guide rods, a wedge block is fixedly provided at one side of the mounting block, a third spring is sleeved on the outer wall of the second guide rod, and two ends of the third spring are respectively fixedly connected to the mounting block and the side of the fixing plate close to each other, a rectangular hole for accommodating the wedge block is provided on the outer side of the first set of rods, and a plurality of rectangular grooves for cooperating with the wedge block are provided on one side of the second set of rods for fixing the second set of rods in the first set of rods.

[0017] Furthermore, four groups of tilted hydraulic rods are fixedly provided at the bottom of the lifting platform, and a push rod is rotatably provided through the output end of each group of hydraulic rods. The push rod is extended when the lifting platform rises to the working position, and its end abuts against the connecting cloth and presses it on the stage surface to form an inclined connecting cloth for cushioning and protecting people falling from the lifting platform. The oil inlet and outlet ends of the hydraulic rods are connected to the hydraulic pump station outside the stage through pipelines.

[0018] Furthermore, the retracted push rod is away from one end surface of the stage, so as to avoid the lifting plate from colliding with the stage during the lifting process.

[0019] A noise reduction method for a lifting stage structure is applied to the above-mentioned lifting stage structure, comprising the following steps:

[0020] S1. Install the stage and the lifting platform at the performance site, and configure the hydraulic power station outside the safe area of ​​the performance site, and then use pipelines to connect the first hydraulic motor and the second hydraulic motor to the external hydraulic power station;

[0021] S2: When the lifting platform needs to be raised or lowered, the external hydraulic power station is started to control the first hydraulic motor, reel in the first steel wire rope, and drive the telescopic rod to extend, thereby driving the lifting plate to move upward;

[0022] S3, when the lifting plate moves upward, it drives one end of the connecting cloth to move upward, and at the same time controls the second hydraulic motor to start and unwind the connecting cloth;

[0023] S4, control the hydraulic rod to extend, drive the push rod to move, press the middle part of the connecting cloth on one side of the stage, form an inclination, and protect the actor who falls;

[0024] S5. Control the second hydraulic motor to rotate in the opposite direction to reel in the excess connecting cloth, and fix the telescopic rod during the reeling process.

[0025] The beneficial effects of the present invention are:

[0026] 1. The lifting stage structure disclosed in the present invention utilizes a transmission system of a hydraulic motor and a steel wire rope to achieve smooth and rapid lifting of the stage and the lifting plate. By precisely controlling the output of the hydraulic power station, the accuracy and stability of the lifting action can be ensured to meet the needs of different performance scenes. At the same time, the noise during the lifting process is significantly reduced, providing a quieter environment for the performance and enhancing the audience's viewing experience.

[0027] 2. The lifting stage structure disclosed in the present invention can block the space below after the lifting plate moves upward through the setting of the connecting cloth. At the same time, posters corresponding to the performance can be printed on the connecting cloth to promote the performance. At the same time, the hydraulic rod is used to make the connecting cloth inclined. When an actor accidentally falls, the connecting cloth can form a buffer to reduce injuries. At the same time, the connecting cloth can be quickly fixed on the stage through the action of the hydraulic rod and the push rod to form a stable safety barrier.

[0028] 3. The lifting stage structure disclosed in the present invention can be used in conjunction with the connecting cloth through the setting of the pins and the wedges to fix the telescopic rod, effectively avoiding the falling phenomenon caused by the breakage of the wire rope, effectively protecting the safety of the people on the stage, and automatically releasing the fixation of the telescopic rod when it needs to be retracted.

[0029] 4. The lifting stage structure disclosed in the present invention realizes smooth and fast lifting operations through hydraulic drive, and is equipped with an intelligent locking and unlocking mechanism to ensure stability and safety during the lifting process. It not only reduces noise interference, but also has actor protection functions and efficient stage change capabilities, providing flexible and changeable stage effects for performances. At the same time, during the lifting process, it drives the connecting cloth to open, providing effective fall protection for the actors.

[0030] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 It is a three-dimensional structural schematic diagram of a lifting stage structure of the present invention;

[0033] Figure 2 For the present invention Figure 1 Schematic diagram of the middle lifting platform structure;

[0034] Figure 3 For the present invention Figure 1 Cross-sectional view of the middle telescopic rod;

[0035] Figure 4 For the present invention Figure 3 Another perspective structural diagram;

[0036] Figure 5 For the present invention Figure 1 Schematic diagram of the installation structure of the middle connection cloth;

[0037] Figure 6 For the present invention Figure 1 Schematic diagram of the connecting cloth and push rod structure;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of part A in the middle;

[0039] Figure 8 For the present invention Figure 1 Partial schematic diagram of the middle telescopic rod.

[0040] Figure numerals: 1, stage; 2, pit seat; 3, lifting platform; 4, bottom plate; 5, lifting plate; 6, telescopic rod; 7, hydraulic rod; 8, push rod; 9, first rotating seat; 10, rotating shaft; 11, first storage roller; 12, first hydraulic motor; 13, first wire rope; 14, first set of rods; 15, first pulley; 16, second set of rods; 17, sliding rod; 18, second pulley; 19, second wire rope; 20, rectangular hole; 21, fixed rod; 2 2. Push plate; 23. First spring; 24. Rectangular opening; 25. Pin; 26. Fixed platform; 27. First guide rod; 28. Second spring; 29. ​​Connecting plate; 30. Second rotating seat; 31. Second hydraulic motor; 32. Connecting cloth; 33. Second storage roller; 34. Extension rod; 35. Fixed plate; 36. Second guide rod; 37. Third spring; 38. Mounting block; 39. Wedge block; 40. Rectangular groove; 41. Socket; 42. Positioning groove. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0042] like Figure 1-Figure 8 A lifting stage structure shown includes a plurality of stages 1 arranged on the ground, and the number of stages 1 is set according to actual needs. A pit seat 2 is provided between the plurality of stages 1, and a lifting platform 3 is provided in the pit seat 2. The lifting platform 3 is composed of a base plate 4, a plurality of telescopic rods 6 and a lifting plate 5. The bottom ends of the plurality of telescopic rods 6 are fixedly arranged on the top of the base plate 4, and the lifting plate 5 is fixedly arranged on the top of the plurality of telescopic rods 6. Through the telescopic movement of the telescopic rods 6, the lifting plate 5 can be driven to perform vertical lifting and movement (the maximum lifting speed is controlled at 0.3m / s±5%), thereby being able to drive the actors to lift and move. The travel error of the telescopic rod 6 is ≤0.5mm, and the load capacity of a single rod is ≥500kg.

[0043] In order to realize the telescopic movement of the telescopic rod 6, a driving assembly is provided on the bottom plate 4 in this embodiment. The driving assembly includes two first rotating seats 9 fixedly provided on the top of the bottom plate 4, and a same rotating shaft 10 is rotatably provided between the two first rotating seats 9. Two groups of first receiving rollers 11 are fixedly sleeved on the outer wall of the rotating shaft 10, and two groups of first steel wire ropes 13 are fixedly provided and wound around the outer wall of the first receiving rollers 11. The telescopic rod 6 includes a first set of rods 14, and first pulleys 15 are rotatably provided on both sides of the first set of rods 14. A second set of rods 16 is slidably provided in the first set of rods 14, and one end of the first steel wire rope 13 passes over the first pulley 15 and is fixedly connected to the second set of rods 16, so as to drive the second set of rods 16 to move upward in the first set of rods 14. The bottom end of the first set of rods 14 is fixedly connected to the base plate 4, and a first hydraulic motor 12 is fixedly provided on one side of one of the first rotating seats 9. The output end of the first hydraulic motor 12 is fixedly connected to the rotating shaft 10, and the inlet and outlet oil ends of the first hydraulic motor 12 are connected to the hydraulic power station outside the stage 1 through pipelines. The working pressure of the hydraulic power station is set to 16MPa±0.5MPa, and a double vane pump is configured to achieve redundant oil supply, thereby controlling the start and stop of the first hydraulic motor 12, and then controlling the rotation of the rotating shaft 10, realizing the retraction and extension of the first steel wire rope 13, and driving the second set of rods 16 to move in the first set of rods 14.

[0044] A sliding rod 17 is slidably provided in the second rod set 16, and a second pulley 18 is rotatably provided on both sides of the second rod set 16. Two sets of second steel wire ropes 19 are fixedly provided on the top of the first rod set 14. The first steel wire rope 13 and the second steel wire rope 19 are made of 7×19 strands of stainless steel (corrosion-resistant), with a breaking strength of ≥1800MPa and a diameter of 6-8mm. The other end of the second steel wire rope 19 passes around the second pulley 18 and is fixedly connected to the sliding rod 17. When the second rod set 16 moves upward in the first rod set 14, the second steel wire rope 19 will pull the sliding rod 17 to move upward in the second rod set 16, thereby realizing the overall extension and retraction of the telescopic rod 6. The top of the sliding rod 17 is fixedly connected to the lifting plate 5. Through the telescopic movement of the telescopic rod 6, the lifting plate 5 can be driven to move up and down, and the use of hydraulic and steel wire rope driving methods can minimize the noise during the lifting and retracting process of the lifting plate 5.

[0045] In order to block the gap between the lifting platform 5 and the stage 1 after it is raised, and prevent people from falling under the lifting platform 5, multiple protective mechanisms are respectively arranged on the stage 1 around the pit seat 2 in this embodiment. The protective mechanism includes a fixed platform 26 fixed on the stage 1, a connecting plate 29 is arranged on the top of the fixed platform 26, two second rotating seats 30 are fixedly arranged on one side of the connecting plate 29, a second storage roller 33 is rotatably arranged between the two second rotating seats 30, a connecting cloth 32 is fixed and wound around the outer wall of the second storage roller 33, and the other end of the connecting cloth 32 is fixedly connected to the lifting platform 5. A second hydraulic motor 31 is fixedly provided on one side of one of the second rotating seats 30, and the output end of the second hydraulic motor 31 is fixedly connected to the second storage roller 33. The inlet and outlet oil ends of the second hydraulic motor 31 are connected to the hydraulic power station outside the stage 1 through pipelines, which are used to control the second hydraulic motor 31 to start and stop the retracting and releasing of the connecting cloth 32. In this way, when the lifting plate 5 moves upward, the connecting cloth 32 is released at the same time, so that the top of the connecting cloth 32 also moves upward, thereby blocking the space below the lifting plate 5, which can effectively avoid accidents during the performance.

[0046] In order to limit the extended telescopic rod 6 and prevent the first steel wire rope 13 from breaking and causing the lifting plate 5 to fall, a limiting assembly is provided on one side of the connecting plate 29 in this embodiment. The limiting assembly includes two first guide rods 27 that are slidably arranged on one side of the stage 1, and one end of the two first guide rods 27 is fixedly connected to the connecting plate 29, and the connecting plate 29 is slidably arranged on the fixed platform 26. The outer wall of the first guide rod 27 is sleeved with a second spring 28, and the two ends of the second spring 28 are respectively fixedly connected to the outer wall of one end of the first guide rod 27 and the inner side of the stage 1. A rectangular opening 24 is opened on the outer side of the first sleeve rod 14, and a fixed rod 21 is fixedly arranged on one side of the sliding rod 17, and a push plate 22 located in the rectangular opening 24 is slidably sleeved on the outer wall of the fixed rod 21, and a first spring 23 is sleeved on the outer wall of the fixed rod 21, and the two ends of the first spring 23 are respectively fixedly connected to the sides of the sliding rod 17 and the push plate 22 that are close to each other. A pin 25 is fixedly provided on one side of the push plate 22, a socket 41 for accommodating the pin 25 is provided on one side of the second set of rods 16, a plurality of positioning grooves 42 for use with the pin 25 are provided on one side of the sliding rod 17, and an extension rod 34 is fixedly provided on one side of the connecting plate 29. The left and right groups of extension rods 34 are used in conjunction with the corresponding push plates 22 to drive the pin 25 to be inserted into the positioning groove 42 (locking accuracy reaches ±0.2mm). In this way, after the lifting plate 5 moves upward into position, the second hydraulic motor 31 is started to rewind the connecting cloth 32. The connecting cloth 32 is made of double-layer flame-retardant polyester fiber (tensile strength ≥50kN / m, thickness 2.5mm), and the edge is coated with silicone rubber coating to improve wear resistance. The connecting plate 29 is driven to move by the principle of triangle, so that the extension rod 34 is used to drive the pin 25 to be inserted into the socket 41 and the positioning groove 42 in turn, and the sliding rod 17 is fixed in the second set of rods 16.

[0047] A fixing plate 35 is fixedly provided at one end of the front and rear extension rods 34, and two second guide rods 36 are slidably provided on one side of the fixing plate 35, and a same mounting block 38 is fixedly provided at one end of the two second guide rods 36, and a wedge block 39 is fixedly provided on one side of the mounting block 38. A third spring 37 is sleeved on the outer wall of the second guide rod 36, and the two ends of the third spring 37 are respectively fixedly connected to the mounting block 38 and the side of the fixing plate 35 close to each other. A rectangular hole 20 for accommodating the wedge block 39 is provided on the outer side of the first set of rods 14, and a plurality of rectangular grooves 40 for use with the wedge block 39 are provided on one side of the second set of rods 16. Similarly, the above method is used to drive the wedge block 39 to be inserted into the rectangular groove 40, so as to fix the second set of rods 16 in the first set of rods 14.

[0048] In order to further improve safety, in this embodiment, four groups of tilted hydraulic rods 7 are fixedly set at the bottom of the lifting platform 5, and the output end of each group of hydraulic rods 7 is rotatably provided with a push rod 8. When the lifting platform 5 rises, the hydraulic rod 7 will extend to drive the push rod 8 to move downward and tilt, pressing the connecting cloth 32 on the stage 1 to form an inclined connecting cloth 32. In this way, even if someone falls from the lifting platform 5, they will be buffered and protected by the inclined connecting cloth 32 to reduce injuries. The oil inlet and outlet ends of the hydraulic rod 7 are connected to the hydraulic pump station outside the stage 1 through pipelines, so as to control the start and stop of the hydraulic rod 7 and the extension and retraction of the push rod 8. The retracted push rod 8 is set away from one side end face of the stage 1 to avoid conflict with the stage 1 during the lifting and lowering of the lifting platform 5.

[0049] The noise reduction processing method of the lifting stage structure is:

[0050] First, the stage 1 and the lifting platform 3 are installed at the performance site, and the hydraulic power station is arranged outside the safe area of ​​the performance site, and then the first hydraulic motor 12 and the second hydraulic motor 31 are connected to the external hydraulic power station by using pipelines;

[0051] When the lifting platform 3 needs to be lifted, the external hydraulic power station is started to control the first hydraulic motor 12 to start, driving the rotating shaft 10 to rotate, the rotating shaft 10 rotates to drive the first storage roller 11 to rotate, the first storage roller 11 rotates to reel the first steel wire rope 13, and the first steel wire rope 13 drives the second set of rods 16 to move upward in the first set of rods 14 through the other end during the reeling process, and the second set of rods 16 moves upward through the second pulley 18 during the upward movement of the middle section of the second steel wire rope 19, and the middle section of the second steel wire rope 19 moves upward through the other end during the upward movement of the middle section of the second steel wire rope 19, thereby driving the sliding rod 17 to move upward, thereby driving the telescopic rod 6 to extend, and driving the lifting plate 5 to move upward;

[0052] At the same time, the lifting plate 5 drives one end of the connecting cloth 32 to move upwards during the upward movement, and at the same time controls the second hydraulic motor 31 to start in the reverse direction, driving the second receiving roller 33 to rotate in the reverse direction, unwinding the connecting cloth 32 until it moves into place;

[0053] The hydraulic rod 7 is controlled to extend, driving the push rod 8 to move, pressing the middle part of the connecting cloth 32 onto the stage 1 on one side, forming an inclination, protecting the actor who falls, and supporting the lifting plate 5 at the same time;

[0054] Finally, the second hydraulic motor 31 is controlled to rotate forward to reel in the excess connecting cloth 32. During the reeling process, the connecting plate 29 is driven to approach the telescopic rod 6. During the approaching process, the extension rod 34 is driven to move. The extension rod 34 moves to contact the push plate 22 and approaches the sliding rod 17. During the approaching process, the pin 25 is driven to insert into the corresponding positioning groove 42 to fix the sliding rod 17 in the second set of rods 16, and the extension rod 34 on the adjacent side moves to drive the fixing plate 35 to move. The movement of the fixing plate 35 causes the third spring 37 to drive the mounting block 38 to move. The movement of the mounting block 38 drives the wedge block 39 to move, so that the wedge block 39 is sequentially inserted into the corresponding rectangular hole 20 and the rectangular groove 40 to fix the second set of rods 16 in the first set of rods 14, thereby fixing the extended telescopic rod 6;

[0055] When it is necessary to descend, the second hydraulic motor 31 is controlled to rotate forward by an external hydraulic power station, and the second hydraulic motor 31 rotates to release the connecting cloth 32. At this time, the connecting plate 29 is reset and moved under the action of the second spring 28, and drives the extension rod 34 to reset and move. The extension rod 34 resets and moves to make it away from the push plate 22, and the push plate 22 resets and moves under the action of the first spring 23, driving the pin 25 to disengage from the positioning groove 42, and driving the wedge block 39 to reset and move. The wedge block 39 resets and moves so that the wedge block 39 is away from the rectangular groove 40 and the rectangular hole 20, and the fixation of the telescopic rod 6 is released. Then, the first hydraulic motor 12 is started by the hydraulic power station to rotate in the opposite direction to release the redundant first steel wire rope 13. The lifting plate 5 drives the sliding rod 17 to move downward in the second set of rods 16 under gravity, and the second set of rods 16 move downward in the first set of rods 14. At the same time, the external hydraulic power station is used to control the second hydraulic motor 31 to rotate and retract the redundant connecting cloth 32, and start the hydraulic rod 7 to retract until the top of the lifting plate 5 is flush with the stage 1.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A lifting stage structure, characterized in that: It comprises a plurality of stages (1) arranged on the ground, a pit seat (2) being arranged between the plurality of stages (1), and a lifting platform (3) being arranged inside the pit seat (2); The lifting platform (3) is composed of a bottom plate (4), a plurality of telescopic rods (6) and a lifting plate (5), wherein the bottom ends of the plurality of telescopic rods (6) are fixedly arranged on the top of the bottom plate (4), and the lifting plate (5) is fixedly arranged on the top ends of the plurality of telescopic rods (6); A driving assembly, arranged on the bottom plate (4), used for driving the telescopic rod (6) to telescope and move, thereby driving the lifting plate (5) to move upward and downward; A plurality of protective mechanisms are respectively arranged on the stage (1) around the pit seat (2) and are used in conjunction with the driving assembly to block a gap formed between the lifting plate (5) and the stage (1) after the lifting plate (5) is lifted, thereby preventing people from falling under the lifting plate (5) and limiting the position of the extended telescopic rod (6) during the protection process.

2. A lifting stage structure as claimed in claim 1, characterized in that: The telescopic rod (6) comprises a first set of rods (14), a second set of rods (16) is slidably arranged inside the first set of rods (14), a sliding rod (17) is slidably arranged inside the second set of rods (16), the top of the sliding rod (17) is fixedly connected to the lifting plate (5), and the bottom end of the first set of rods (14) is fixedly connected to the bottom plate (4).

3. A lifting stage structure as claimed in claim 2, characterized in that: The driving assembly comprises two first rotating seats (9) fixedly arranged on the top of the bottom plate (4); a same rotating shaft (10) is rotatably provided between the two first rotating seats (9); two groups of first receiving rollers (11) are fixedly sleeved on the outer wall of the rotating shaft (10); two groups of first steel wire ropes (13) are fixedly arranged and wound around the outer wall of the first receiving rollers (11); first pulleys (15) are rotatably provided on both sides of the first set of rods (14); one end of the first steel wire rope (13) passes around the first pulley (15) and is fixedly connected to the second set of rods (16) for driving the second set of rods (16) to move upward in the first set of rods (14); a first hydraulic motor (12) is fixedly provided on one side of one of the first rotating seats (9); the output end of the first hydraulic motor (12) is fixedly connected to the rotating shaft (10); and the oil inlet and outlet ends of the first hydraulic motor (12) are both connected to the hydraulic power station outside the stage (1) through pipelines.

4. A lifting stage structure as claimed in claim 3, characterized in that: Second pulleys (18) are rotatably provided on both sides of the second rod (16), and two sets of second steel wire ropes (19) are fixedly provided on the top of the first rod (14). The other ends of the second steel wire ropes (19) pass around the second pulleys (18) and are fixedly connected to the sliding rod (17).

5. The lifting stage structure according to claim 2, characterized in that: The protective mechanism comprises a fixed platform (26) fixed on the stage (1), a connecting plate (29) being provided on the top of the fixed platform (26), two second rotating seats (30) being fixed on one side of the connecting plate (29), a second receiving roller (33) being rotatably provided between the two second rotating seats (30), a connecting cloth (32) being fixed on and wrapped around the outer wall of the second receiving roller (33), the other end of the connecting cloth (32) being fixedly connected to the lifting plate (5), a second hydraulic motor (31) being fixed on one side of one of the second rotating seats (30), the output end of the second hydraulic motor (31) being fixedly connected to the second receiving roller (33), the oil inlet and outlet ends of the second hydraulic motor (31) being connected to the hydraulic power station outside the stage (1) through pipelines, and being used to control the second hydraulic motor (31) to start, stop, and retract and release the connecting cloth (32), and a limiting component for fixing the telescopic rod (6) being provided on one side of the connecting plate (29) to prevent the lifting plate (5) from falling due to the breakage of the first steel wire rope (13).

6. A lifting stage structure as claimed in claim 5, characterized in that: The limiting assembly comprises two first guide rods (27) which are slidably disposed on one side of the stage (1), one end of each of the two first guide rods (27) being fixedly connected to a connecting plate (29), the connecting plate (29) being slidably disposed on a fixed platform (26), the outer wall of the first guide rod (27) being sleeved with a second spring (28), the two ends of the second spring (28) being respectively fixedly connected to the outer wall of one end of the first guide rod (27) and the inner side of the stage (1), the outer side of the first sleeve rod (14) being provided with a rectangular opening (24), one side of the sliding rod (17) being fixedly provided with a fixing rod (21), the outer wall of the fixing rod (21) being slidably sleeved with a push plate (22) located in the rectangular opening (24), the fixing rod (21) The outer wall of the first spring (23) is sleeved with a first spring (23), and the two ends of the first spring (23) are respectively fixedly connected to the sliding rod (17) and the side of the push plate (22) close to each other. A pin (25) is fixedly provided on one side of the push plate (22). A plug hole (41) for accommodating the pin (25) is provided on one side of the second set of rods (16). A plurality of positioning grooves (42) for use with the pin (25) are provided on one side of the sliding rod (17). An extension rod (34) is fixedly provided on one side of the connecting plate (29). The left and right extension rods (34) are used in conjunction with the corresponding push plates (22) to drive the pin (25) to be inserted into the positioning groove (42) to fix the sliding rod (17) in the second set of rods (16).

7. A lifting stage structure as claimed in claim 6, characterized in that: A fixing plate (35) is fixedly provided at one end of the front and rear extension rods (34), two second guide rods (36) are slidably provided through one side of the fixing plate (35), a same mounting block (38) is fixedly provided at one end of the two second guide rods (36), a wedge block (39) is fixedly provided at one side of the mounting block (38), a third spring (37) is sleeved on the outer wall of the second guide rod (36), two ends of the third spring (37) are respectively fixedly connected to the mounting block (38) and one side of the fixing plate (35) close to each other, a rectangular hole (20) for accommodating the wedge block (39) is provided on the outer side of the first set of rods (14), and a plurality of rectangular grooves (40) for cooperating with the wedge block (39) are provided on one side of the second set of rods (16) for fixing the second set of rods (16) in the first set of rods (14).

8. A lifting stage structure as claimed in claim 7, characterized in that: Four groups of tilted hydraulic rods (7) are fixedly provided at the bottom of the lifting plate (5). The output end of each group of hydraulic rods (7) is provided with a push rod (8) that is rotated through the output end. When the lifting plate (5) rises to the working position, the push rod (8) extends out, and its end abuts against the connecting cloth (32) and presses it onto the surface of the stage (1), forming an inclined connecting cloth (32) for cushioning and protecting personnel falling from the lifting plate (5). The oil inlet and outlet ends of the hydraulic rods (7) are connected to the hydraulic pump station outside the stage (1) through pipelines.

9. A lifting stage structure as claimed in claim 8, characterized in that: The retracted push rod (8) is away from one end surface of the stage (1), so as to prevent the lifting plate (5) from colliding with the stage (1) during the lifting process.

10. A noise reduction method for a lifting stage structure as claimed in claim 9, characterized in that: The following steps are involved: S1, installing the stage (1) and the lifting platform (3) at the performance site, and arranging the hydraulic power station outside the safety area of ​​the performance site, and then connecting the first hydraulic motor (12) and the second hydraulic motor (31) to the external hydraulic power station by using pipelines; S2, when the lifting platform needs to be raised or lowered, the external hydraulic power station is started to control the first hydraulic motor (12), to reel in the first steel wire rope (13), and to drive the telescopic rod (6) to extend, thereby driving the lifting plate (5) to move upward; S3, when the lifting plate (5) moves upward, it drives one end of the connecting cloth (32) to move upward, and at the same time controls the second hydraulic motor (31) to start and unwind the connecting cloth (32); S4, controlling the hydraulic rod (7) to extend, driving the push rod (8) to move, pressing the middle part of the connecting cloth (32) onto the stage (1) on one side, forming an inclination, and protecting the actor who falls; S5, controlling the second hydraulic motor (31) to rotate in the reverse direction, rolling up the excess connecting cloth (32), and fixing the telescopic rod (6) during the rolling process.

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