A lifting stage structure and its noise reduction treatment method

Abstract

The present invention relates to a lifting stage structure and a noise reduction processing method thereof, including a plurality of stages arranged on the ground. There is a pit seat between the plurality of stages, and a lifting platform is arranged in the pit seat; 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 fixedly arranged on the top of the bottom plate, and the lifting plate is fixedly arranged on the top ends of the plurality of telescopic rods; a driving assembly is arranged on the bottom plate and is used to drive the telescopic rods to telescopically move, driving the lifting plate to lift and move; a plurality of protection mechanisms are respectively arranged on the stages around the pit seat and are used in cooperation with the driving assembly to implement sealing when a gap is formed between the lifting plate and the stage after the lifting plate rises, preventing people from falling below the lifting plate, and limiting the telescopic rods that extend during the protection process; solving the problem that when the existing stage lifting platform uses methods such as chains, gears and racks for transmission and lifting, certain noise will be generated when the teeth collide with each other during the lifting process, affecting the viewing and listening effects.

Description

Technical Field

[0001] The present invention belongs to the field of stage equipment, and relates to a lifting stage structure and a noise reduction treatment method therefor. Background Art

[0002] When a general stage is performing, in order to achieve a distinct performance effect, it is necessary to set up the stage surface on the stage in advance. The traditional stage setup requires manually setting up stage frames with different levels to form a high and low scattered stage effect. When switching between different scenes and when performers take the stage, the time-consuming for transitions, intermissions, and stage layout changes is relatively long, which affects the viewing experience, and the form of the performance also has great limitations.

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

[0004] However, existing lifting platforms usually use methods such as chains, gears, and racks for transmission and lifting. Due to the gaps between them, certain noises will be generated when the teeth collide with each other, affecting the viewing and listening effects. Summary of the Invention

[0005] In view of this, in order to solve the problem that certain noises will be generated when the teeth collide with each other during the transmission and lifting process of the existing stage lifting platform using methods such as chains, gears, and racks, affecting the viewing and listening effects, the present invention provides a lifting stage structure and a noise reduction treatment method therefor.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lifting stage structure includes a plurality of stages arranged on the ground. There is a pit seat 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 fixedly arranged on the top of the bottom plate, and the lifting plate is fixedly arranged at 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 rods to telescopically move, driving the lifting plate to move up and down;

[0010] A plurality of protection mechanisms are respectively arranged on the stages around the pit seat and are used in cooperation with the driving assembly. When a gap is formed between the lifting plate and the stage after the lifting plate rises, they are used to block the gap to prevent people from falling below the lifting plate, and limit the extended telescopic rods during the protection process.

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

[0012] Further, the driving assembly includes two first rotating seats fixedly arranged on the top of the bottom plate. A same rotating shaft is rotatably arranged through 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 wound around the outer walls of the first storage rollers. First pulleys are rotatably arranged on both sides of the first sleeve rod. One end of the first steel wire rope bypasses the first pulley and is fixedly connected to the second sleeve rod for driving the second sleeve rod to move upward inside the first sleeve rod. A first hydraulic motor is fixedly arranged on one side of one of the first rotating seats. The output end of the first hydraulic motor is fixedly connected to the rotating shaft. The oil inlet and outlet ends of the first hydraulic motor are both connected to a hydraulic power station outside the stage through pipelines.

[0013] Further, second pulleys are rotatably arranged on both sides of the second sleeve rod. Two groups of second steel wire ropes are fixedly arranged on the top of the first sleeve rod. The other ends of the second steel wire ropes bypass the second pulleys and are fixedly connected to the sliding rod.

[0014] Further, the protection mechanism includes a fixed platform fixedly arranged on the stage. A connecting plate is arranged on the top of the fixed platform. Two second rotating seats are fixedly arranged on one side of the connecting plate. A second storage roller is rotatably arranged through between the two second rotating seats. A connecting cloth is fixedly wound 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 arranged 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 both connected to a hydraulic power station outside the stage through pipelines for controlling the start and stop of the second hydraulic motor to retract and release the connecting cloth. A limiting component for fixing the telescopic rod is arranged on one side of the connecting plate to prevent the lifting plate from falling due to the fracture of the first steel wire rope.

[0015] Further, the limiting component includes two first guiding rods slidably penetrating through one side of the stage. One ends of the two first guiding rods are fixedly connected to a connecting plate, and the connecting plate is slidably arranged on the fixed platform. A second spring is sleeved on the outer wall of the first guiding rod, and two ends of the second spring are respectively fixedly connected to the outer wall of one end of the first guiding rod and the inner side of the stage. A rectangular opening is formed on the outer side of the first sleeve rod. A fixed rod is fixedly arranged on one side of the sliding rod, and a push plate located in the rectangular opening is slidably sleeved on the outer wall of the fixed rod. A first spring is sleeved on the outer wall of the fixed rod, and two ends of the first spring are respectively fixedly connected to the mutually approaching sides of the sliding rod and the push plate. A pin column is fixedly arranged on one side of the push plate, and a jack for accommodating the pin column is formed on one side of the second sleeve rod. A plurality of positioning grooves for cooperating with the pin column are formed on one side of the sliding rod. An extension rod is fixedly arranged on one side of the connecting plate, and the left and right groups of extension rods cooperate with the corresponding push plates to drive the pin column to insert into the positioning grooves to fix the sliding rod in the second sleeve rod.

[0016] Further, fixing plates are fixedly arranged at one ends of the front and rear groups of extension rods. Two second guiding rods are slidably penetrating through one side of the fixing plates. One ends of the two second guiding rods are fixedly connected to the same mounting block. A wedge block is fixedly arranged on one side of the mounting block. A third spring is sleeved on the outer wall of the second guiding rod, and two ends of the third spring are respectively fixedly connected to the mutually approaching sides of the mounting block and the fixing plate. A rectangular hole for accommodating the wedge block is formed on the outer side of the first sleeve rod. A plurality of rectangular grooves for cooperating with the wedge block are formed on one side of the second sleeve rod to fix the second sleeve rod in the first sleeve rod.

[0017] Further, four groups of inclined hydraulic rods are fixedly arranged at the bottom of the lifting plate. The output ends of each group of hydraulic rods penetrate and rotatably arrange the same push rod. The push rod extends out when the lifting plate 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 buffering and protecting the personnel falling from the lifting plate. The oil inlet and outlet ends of the hydraulic rods are both connected to a hydraulic pump station outside the stage through pipelines.

[0018] Further, the end face of the retracted push rod away from the stage avoids contacting with the stage during the lifting and lowering of the lifting plate.

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

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

[0021] S2. When the lifting platform needs to be lifted or lowered, start the external hydraulic power station to control the first hydraulic motor, wind up the first steel wire rope, drive the telescopic rod to extend, and drive the lifting plate to move upward;

[0022] In S3, during the upward movement of the lifting plate, one end of the connecting cloth is driven upward, and at the same time, the second hydraulic motor is controlled to start to unwind the connecting cloth;

[0023] In S4, the hydraulic rod is controlled to extend, driving the push rod to move, pressing the middle part of the connecting cloth on one side of the stage to form an inclination to protect the fallen actor;

[0024] In S5, the second hydraulic motor is controlled to rotate in the reverse direction to wind up the excess connecting cloth, and the telescopic rod is fixed during the winding process.

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

[0026] 1. The lifting stage structure disclosed by the present invention utilizes the transmission system of the hydraulic motor and the steel wire rope to achieve the stable 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, meeting the requirements of different performance scenarios. At the same time, the noise during the lifting process is significantly reduced, providing a more peaceful environment for the performance and enhancing the viewing experience of the audience.

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

[0028] 3. The lifting stage structure disclosed by the present invention, through the setting of the pin column and the wedge block, is used in cooperation with the connecting cloth to fix the telescopic rod, effectively avoiding the falling phenomenon caused by the fracture of the steel 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 by the present invention realizes stable and rapid lifting operations through hydraulic drive, and is equipped with an intelligent locking and unlocking mechanism to ensure the stability and safety during the lifting process. It not only reduces the noise interference, but also has an actor protection function and an efficient stage transformation ability, providing a flexible and changeable stage effect for the performance. At the same time, during the rising process, it drives the connecting cloth to open, providing effective fall protection for the actor.

[0030] Other advantages, objects and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present invention. The objects and other advantages of the present invention may be realized and obtained by the following description of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in detail with reference to the accompanying drawings, where:

[0032] Figure 1 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 lifting platform structure;

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

[0035] Figure 4 For the present invention Figure 3 structural schematic diagram from another perspective;

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

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

[0038] Figure 7 For the present invention Figure 6 enlarged view of part A;

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

[0040] Reference numerals: 1, stage; 2, pit seat; 3, lift platform; 4, bottom plate; 5, lift 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 steel wire rope; 14, first sleeve rod; 15, first pulley; 16, second sleeve rod; 17, sliding rod; 18, second pulley; 19, second steel wire rope; 20, rectangular hole; 21, fixed rod; 22, 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, fixing plate; 36, second guide rod; 37, third spring; 38, mounting block; 39, wedge block; 40, rectangular groove; 41, jack; 42, positioning groove. Detailed implementation manners

[0041] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0042] As Figures 1-8 shown, a lift stage structure includes a plurality of stages 1 arranged on the ground, and the number of stages 1 is set according to actual needs. There is a pit seat 2 between the plurality of stages 1, and a lift platform 3 is arranged in the pit seat 2. The lift platform 3 is composed of a bottom plate 4, a plurality of telescopic rods 6 and a lift plate 5. The bottom ends of the plurality of telescopic rods 6 are fixedly arranged on the top of the bottom plate 4, and the lift plate 5 is fixedly arranged at the top ends of the plurality of telescopic rods 6. By the telescopic movement of the telescopic rods 6, the lift plate 5 can be driven to perform vertical lifting movement (the maximum lifting speed is controlled within 0.3m / s ± 5%), so as to drive the actors to lift and move. The stroke error of the telescopic rods 6 ≤ 0.5mm, and the single rod load capacity ≥ 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 arranged on the top of the bottom plate 4, and the same rotating shaft 10 is rotatably arranged through between the two first rotating seats 9. Two groups of first storage 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 wound on the outer wall of the first storage roller 11. The telescopic rod 6 includes a first sleeve rod 14, and first pulleys 15 are rotatably arranged on both sides of the first sleeve rod 14. A second sleeve rod 16 is slidably arranged in the first sleeve rod 14. One end of the first steel wire rope 13 bypasses the first pulley 15 and is fixedly connected to the second sleeve rod 16, and is used to drive the second sleeve rod 16 to move upward in the first sleeve rod 14. The bottom end of the first sleeve rod 14 is fixedly connected to the bottom plate 4. A first hydraulic motor 12 is fixedly arranged 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. The oil inlet and outlet ends of the first hydraulic motor 12 are both connected to a hydraulic power station outside the stage 1 through pipelines. The working pressure of the hydraulic power station is set to 16 MPa ± 0.5 MPa, and a double vane pump is configured to achieve redundant oil supply, so as to control the start and stop of the first hydraulic motor 12, and further control the rotation of the rotating shaft 10, realize the winding and unwinding of the first steel wire rope 13, and drive the second sleeve rod 16 to move in the first sleeve rod 14.

[0044] A sliding rod 17 is slidably arranged in the second sleeve rod 16, and second pulleys 18 are rotatably arranged on both sides of the second sleeve rod 16. Two groups of second steel wire ropes 19 are fixedly arranged on the top of the first sleeve rod 14. The first steel wire rope 13 and the second steel wire rope 19 are made of stainless steel 7×19 strands (corrosion-resistant), with a breaking strength ≥ 1800 MPa and a diameter of 6 - 8 mm. The other end of the second steel wire rope 19 bypasses the second pulley 18 and is fixedly connected to the sliding rod 17. When the second sleeve rod 16 moves upward in the first sleeve rod 14, the second steel wire rope 19 will pull the sliding rod 17 to move upward in the second sleeve rod 16, thereby realizing the overall telescoping 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 by using the driving methods of hydraulic pressure and steel wire ropes, the noise during the lifting process of the lifting plate 5 can be minimized.

[0045] In order to block the gap formed between the lifting plate 5 and the stage 1 after the lifting plate 5 rises and prevent people from falling below the lifting plate 5, a plurality of protection mechanisms are respectively arranged on the stage 1 around the pit seat 2 in this embodiment. The protection mechanism includes a fixed platform 26 fixedly arranged on the stage 1. A connecting plate 29 is arranged at 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 through between the two second rotating seats 30. A connecting cloth 32 is fixedly wound around the outer wall of the second storage roller 33. The other end of the connecting cloth 32 is fixedly connected with the lifting plate 5. A second hydraulic motor 31 is fixedly arranged on one side of one of the second rotating seats 30. The output end of the second hydraulic motor 31 is fixedly connected with the second storage roller 33. The oil inlet and outlet ends of the second hydraulic motor 31 are both communicated with a hydraulic power station outside the stage 1 through pipelines, which is used to control the start and stop of the second hydraulic motor 31 to wind and unwind the connecting cloth 32. In this way, during the upward movement of the lifting plate 5, the connecting cloth 32 is released at the same time, so that the top end of the connecting cloth 32 also moves upward, thereby being able to block the space below the lifting plate 5 and effectively avoiding accidents during the performance.

[0046] In order to limit the telescopic rod 6 that extends out and prevent the lifting plate 5 from falling due to the fracture of the first steel wire rope 13, a limiting component is arranged on one side of the connecting plate 29 in this embodiment. The limiting component includes two first guide rods 27 slidably arranged through one side of the stage 1. One ends of the two first guide rods 27 are both fixedly connected with the connecting plate 29. The connecting plate 29 is slidably arranged on the fixed platform 26. A second spring 28 is sleeved on the outer wall of the first guide rod 27. Two ends of the second spring 28 are respectively fixedly connected with 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 formed on the outer side of the first sleeve rod 14. A fixed rod 21 is fixedly arranged on one side of the sliding rod 17. A push plate 22 located in the rectangular opening 24 is slidably sleeved on the outer wall of the fixed rod 21. A first spring 23 is sleeved on the outer wall of the fixed rod 21. Two ends of the first spring 23 are respectively fixedly connected with the mutually close sides of the sliding rod 17 and the push plate 22. A pin 25 is fixedly arranged on one side of the push plate 22. A jack 41 for accommodating the pin 25 is formed on one side of the second sleeve rod 16. A plurality of positioning grooves 42 for cooperating with the pin 25 are formed on one side of the sliding rod 17. An extension rod 34 is fixedly arranged on one side of the connecting plate 29. The left and right groups of extension rods 34 cooperate with the corresponding push plates 22 to drive the pin 25 to insert into the positioning groove 42 (the locking accuracy reaches ±0.2 mm). In this way, after the lifting plate 5 moves upward in place, the second hydraulic motor 31 is started to wind the connecting cloth 32. The connecting cloth 32 is made of double-layer flame-retardant polyester fiber (tensile strength ≥ 50 kN / m, thickness 2.5 mm), and the edge is coated with silicone rubber to improve wear resistance. The connecting plate 29 is driven to move by using the principle of a triangle, so as to drive the pin 25 to insert into the jack 41 and the positioning groove 42 in sequence by using the extension rod 34, and fix the sliding rod 17 in the second sleeve rod 16.

[0047] One end of each of the front and rear sets of extension rods 34 is fixedly provided with a fixing plate 35. Two second guide rods 36 are slidably arranged through one side of the fixing plate 35. One end of each of the two second guide rods 36 is fixedly provided with the same mounting block 38. 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. Two ends of the third spring 37 are respectively fixedly connected to the mutually approaching sides of the mounting block 38 and the fixing plate 35. A rectangular hole 20 for accommodating the wedge block 39 is formed on the outer side of the first sleeve rod 14. A plurality of rectangular grooves 40 for cooperating with the wedge block 39 are formed on one side of the second sleeve rod 16. Similarly, by using the above method, the wedge block 39 is driven to insert into the rectangular groove 40 to fix the second sleeve rod 16 in the first sleeve rod 14.

[0048] To further improve safety, in this embodiment, four groups of inclined hydraulic rods 7 are fixedly arranged at the bottom of the lifting plate 5. The output ends of each group of hydraulic rods 7 are rotatably provided with the same push rod 8 through them. After the lifting plate 5 rises, the hydraulic rods 7 will extend to drive the push rod 8 to move obliquely downward, pressing the connecting cloth 32 against the stage 1 to form an inclined connecting cloth 32. In this way, even if someone falls from the lifting plate 5, they will be buffered and protected by the inclined connecting cloth 32, reducing the injury. Both the oil inlet and outlet ends of the hydraulic rods 7 are connected to a hydraulic pump station outside the stage 1 through pipelines, so as to control the start and stop of the hydraulic rods 7 and the extension and retraction of the push rod 8. The end face of the retracted push rod 8 away from the stage 1 is arranged to avoid the lifting plate 5 contacting the stage 1 during the lifting and lowering process.

[0049] The noise reduction treatment method for this lifting stage structure is as follows:

[0050] First, install the stage 1 and the lifting platform 3 at the performance location, configure the hydraulic power station outside the safe area of the performance venue, and then connect the first hydraulic motor 12 and the second hydraulic motor 31 to the external hydraulic power station by using pipelines;

[0051] When the lifting platform 3 needs to be lifted or lowered, start the external hydraulic power station to control the first hydraulic motor 12 to start, drive the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 drives the first storage roller 11 to rotate. The rotation of the first storage roller 11 causes the first steel wire rope 13 to be wound. During the winding process of the first steel wire rope 13, the other end drives the second sleeve rod 16 to move upward in the first sleeve rod 14. During the upward movement of the second sleeve rod 16, the middle section of the second steel wire rope 19 is driven to move upward through the second pulley 18. During the upward movement of the middle section of the second steel wire rope 19, the other end drives 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] Meanwhile, during the upward movement of the lifting plate 5, one end of the connecting cloth 32 is driven upward. At the same time, the second hydraulic motor 31 is controlled to start in reverse, driving the second storage roller 33 to rotate in reverse to unwind 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 against one side of the stage 1 to form an inclination, protecting the fallen actor and supporting the lifting plate 5 at the same time.

[0054] Finally, the second hydraulic motor 31 is controlled to rotate forward to wind up the excess connecting cloth 32. During the winding 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 abut against 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 sleeve rod 16. The movement of the adjacent extension rod 34 drives the fixed plate 35 to move. The movement of the fixed 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 inserted into the corresponding rectangular hole 20 and rectangular groove 40 in sequence to fix the second sleeve rod 16 in the first sleeve rod 14, thereby fixing the extended telescopic rod 6.

[0055] When it is necessary to lower, the external hydraulic power station is used to control the second hydraulic motor 31 to rotate forward. The second hydraulic motor 31 rotates to release the connecting cloth 32. At this time, the connecting plate 29 moves back under the action of the second spring 28 and drives the extension rod 34 to move back. The reset movement of the extension rod 34 makes it move away from the push plate 22. The push plate 22 moves back 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 move back. The reset movement of the wedge block 39 makes the wedge block 39 move away from the rectangular groove 40 and rectangular hole 20, releasing the fixation of the telescopic rod 6. Then, the hydraulic power station is used to start the first hydraulic motor 12 to rotate in reverse to release the excess first steel wire rope 13. The lifting plate 5 drives the sliding rod 17 to move downward in the second sleeve rod 16 under the action of gravity, and the second sleeve rod 16 moves downward in the first sleeve rod 14. At the same time, the external hydraulic power station is used to control the second hydraulic motor 31 to rotate to wind up the excess 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 solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within 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; 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); The protection 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 provided between the two second rotating seats (30) and being provided for rotation, 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 for controlling the second hydraulic motor (31) to start, stop, 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); 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).

2. A lifting stage structure as claimed in claim 1, 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.

3. A lifting stage structure as claimed in claim 2, 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).

4. A lifting stage structure as claimed in claim 2, 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).

5. A lifting stage structure as claimed in claim 4, 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.

6. A lifting stage structure as claimed in claim 5, 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.

7. A noise reduction method for a lifting stage structure as claimed in claim 6, 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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