Large theater stage system and use method thereof

Abstract

The invention relates to a large theater stage system and a use method thereof, a fixed table in a theater is convex, expansion tables are arranged in two notches of the fixed table, a driving part is arranged at the bottom of the fixed table, the two expansion tables are driven by power of the driving part to move to the front of the fixed table, and the shape of a stage is expanded according to needs; the main screen is arranged on one side of the theater, and the two auxiliary screens are further arranged on the two sides of the theater. Two equipment rooms are arranged in a bottom foundation pit of the theater, a fixing table is in lap joint above the equipment rooms and the foundation pit through a truss to form an expansion space, two lifting tables are further embedded in the fixing table, and a lifting mechanism used for driving the lifting tables to ascend and descend is arranged in the foundation pit. The lifting mechanism comprises a locking assembly for locking the lifting table after failure; according to the stage system, the space below the stage can be fully utilized, the shape of the stage can be adjusted, and the requirement for diversified performance is met.

Description

Technical Field

[0001] The invention belongs to the technical field of stage equipment and relates to a large theater stage system and a use method thereof. Background Art

[0002] In the traditional stage construction process, the stage and the ground are usually connected by a support frame. Although this structure can ensure the stability of the stage, a large amount of space will be formed in between. These spaces are often wasted and cannot be effectively utilized, resulting in a huge waste of space resources. In addition, supporting facilities such as rehearsal rooms, dressing rooms, and equipment rooms in the theater all need to occupy a large space separately. The layout of these rooms is often relatively fixed, and it is difficult to flexibly adjust them according to the needs of the performance, which further affects the actual use area of ​​the stage. When the theater holds large-scale performances, the effective space available is limited, making it difficult to meet the needs of diverse performance scenes.

[0003] In addition, the poor flexibility of the stage is also a major drawback of the existing stage system. After the traditional stage is built, its shape and structure are basically fixed and cannot be adjusted according to the specific needs of the performance. Whether it is the size, height, or shape of the stage, it is difficult to change quickly and effectively. This greatly limits the use of the stage and makes it difficult to adapt to the increasingly diverse performance needs. For example, some modern plays may require multiple performance areas on the stage, or require the stage to be able to quickly switch scenes, but the existing fixed stage structure cannot meet these requirements. This not only limits the creativity of the performance, but also reduces the efficiency and adaptability of the theater.

[0004] In view of the above problems, the variable and expandable stage system came into being. The design concept of this stage system is to solve the shortcomings of the existing stage in terms of space utilization and flexibility. The variable and expandable stage system adopts a modular design, which can quickly adjust the shape, size and height of the stage according to the performance requirements. Through flexible support structures and detachable stage panels, the stage can be reassembled and configured in a short time, so as to achieve rapid switching of multiple scenes. At the same time, this system can also make full use of the space under the stage and design it as a retractable equipment room, temporary rehearsal area or storage space, thereby effectively improving the space utilization rate of the theater. The variable and expandable stage system can not only meet the needs of diversified performances, but also improve the overall operational efficiency of the theater, bringing a more colorful performance experience to the audience. Summary of the invention

[0005] In view of this, the present invention provides a large theater stage system and a method for using the same in order to solve the problem that in the process of existing stage construction, a support frame is connected between the stage and the ground, a large amount of idle space is left between the stage and the ground, and the space cannot be fully utilized. At the same time, after the stage is built, the shape of the stage cannot be adjusted, which limits the use of the stage.

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

[0007] A large theater stage system includes a fixed platform arranged in the theater, the fixed platform is convex, and expansion platforms are arranged in two notches of the fixed platform. A driving member is arranged at the bottom of the fixed platform, and the two expansion platforms are driven to move to the front of the fixed platform by the power of the driving member to expand the shape of the stage as needed;

[0008] The main screen is set on one side of the theater. There are two sub-screens on both sides of the theater. The two sub-screens are offset from the main screen and do not affect each other, forming a multi-area display screen;

[0009] There is a foundation pit at the bottom of the theater, with two equipment rooms in the foundation pit. The fixed platform is connected to the equipment room and the foundation pit by trusses to form an expansion space. Two lifting platforms are embedded on the fixed platform, and a lifting mechanism is set in the foundation pit to drive the lifting platform to move up and down.

[0010] The lifting mechanism also includes a locking component, which is used to lock the lifting platform after the lifting mechanism fails to prevent the lifting platform from falling.

[0011] Furthermore, the driving member includes a slide rail slidably arranged on the bottom truss of the fixed platform, a first hydraulic rod is fixedly arranged at the bottom of the fixed platform, an output end of the first hydraulic rod is fixedly connected to the slide rail, two relatively set second hydraulic rods are fixedly arranged at the bottom of the slide rail, and output ends of the second hydraulic rods are fixedly connected to the corresponding expansion platform. The power of the first hydraulic rod and the two second hydraulic rods is utilized to drive the expansion platform to move in an L shape to the front of the fixed platform, and the first hydraulic rod and the two second hydraulic rods are connected to an external hydraulic station through pipelines.

[0012] Furthermore, the lifting mechanism includes two groups of first guide rods fixed in the foundation pit, two lifting platforms are slidably sleeved on the two groups of first guide rods respectively, two second rotating seats are fixedly provided at the bottom of the fixed platform, and a rotating shaft is rotatably provided between the two second rotating seats through a bearing, a hydraulic motor is fixedly provided on one side of one of the second rotating seats by bolts, the hydraulic motor is connected to an external hydraulic station through a pipeline, the output end of the hydraulic motor is connected to the rotating shaft through a coupling, two storage rollers are fixedly sleeved on the outer wall of the rotating shaft by bolts, a steel wire rope is fixed on the outer wall of the storage roller and wound around it, the other end of the steel wire rope is fixedly connected to the bottom of the fixed platform to form a U-shape, the lifting platform is in conflict with the middle sections of the two steel wire ropes, and the lifting platform can be driven upward by the hydraulic motor to tighten the steel wire rope.

[0013] Furthermore, two sets of first rotating seats are fixedly provided at the bottom of the lifting platform, and pulleys are rotatably provided in the first rotating seats through rotating shafts and bearings. The outer wall of each set of pulleys is provided with grooves adapted to the wire ropes, and the pulleys and wire ropes are used to reduce the friction between the wire ropes and the lifting platform.

[0014] Furthermore, the locking assembly includes two groups of second fixed blocks fixed at the bottom of the lifting platform by welding, a third guide rod is fixed between each group of second fixed blocks by welding, the two third guide rods are sleeved with the same sliding plate, the outer wall of the third guide rod is sleeved with a second spring, the two ends of the second spring are respectively fixedly connected to one of the second fixed blocks and the side close to each other of the sliding plate, two second plug rods are fixedly provided on one side of the sliding plate by welding, a plurality of second plug holes compatible with the second plug rods are opened on one side of the two first guide rods located on one side, and a connecting piece used in conjunction with the steel wire rope is provided at the bottom of the lifting platform, and when the steel wire rope breaks, the connecting piece drives the second plug rod to be inserted into the corresponding second plug hole.

[0015] Furthermore, the connecting part includes two sleeve rods fixed at the bottom of the lifting platform by welding, a second sliding rod is slidably provided in the sleeve rod, a third rotating seat is fixed by welding at the bottom of the second sliding rod, a pulley used in conjunction with the wire rope is rotatably provided in the third rotating seat through a rotating shaft and a bearing, a rectangular opening is opened on one side of the sleeve rod, a wedge block used in conjunction with the sliding plate is slidably provided in the rectangular opening, the wedge block is fixed by welding on one side of the second sliding rod, and the gravity of the second sliding rod, the third rotating seat and the pulley is used to overcome the elastic force of the second spring to drive the sliding plate to approach the two first guide rods.

[0016] Furthermore, each lifting platform is provided with a handrail, one of which is slidably arranged on the lifting platform, and is exposed from the top of the lifting platform in coordination with the lifting of the lifting platform, so as to be used for supporting the actors as they rise from the foundation pit. A fixing is provided at the bottom of the lifting platform to lock the handrail on the lifting platform, and after rising into place, the fixing can be used in conjunction with the truss to release the fixation of the handrail, thereby preventing the handrail from hindering the actors' movement.

[0017] Furthermore, the fixing part includes two mounting seats mounted on the armrests, the mounting seats are fixedly connected to the lifting platform by welding, a first sliding rod is slidably provided through one side of the mounting seat, a first insertion rod is fixedly provided on one side of the first sliding rod, a first plug hole for cooperating with the first insertion rod is provided on the outer wall of the armrest, a first fixing block is fixedly provided on one side of the first sliding rod, a first spring for driving the first sliding rod to move is provided between the first fixing block and the mounting seat, and an inclined surface for cooperating with the truss is provided on the top of one end of the first sliding rod.

[0018] Furthermore, a second guide rod is slidably provided through one side of the first fixed block, one end of the second guide rod is welded to the mounting seat, and the first spring is sleeved on the second guide rod and is located between the first fixed block and the mounting seat.

[0019] A method for using a large theater stage system is applied to the above-mentioned large theater stage system, comprising the following steps:

[0020] S1, start the hydraulic motor on the right side of the theater to rotate in the opposite direction to transport the staff and performers into the foundation pit;

[0021] S2, start the starting hydraulic motor on the left side to rotate forward to transport the performers to the fixed stage;

[0022] S3. According to the demonstration effect, the first hydraulic rod and the second hydraulic rod are activated to move the expansion platforms on both sides of the fixed platform to the front of the fixed platform to change the shape of the stage.

[0023] The beneficial effects of the present invention are:

[0024] 1. The large theater stage system disclosed in the present invention can form a space in the foundation pit by opening a foundation pit on the ground and building a fixed platform and an expansion platform on the top of the foundation pit. Equipment rooms, dressing rooms, rehearsal rooms and other spaces can be set in this space, which makes it unnecessary to set up these spaces on the ground additionally, and can greatly improve the utilization of the theater space.

[0025] 2. The large theater stage system disclosed in the present invention can easily realize the lifting and lowering operation of the lifting platform by driving the hydraulic motor to rotate in the opposite direction through an external hydraulic station, providing performers and staff with a fast and safe on-stage and off-stage passage. During the lifting process, the release and storage of the wire rope are automatically completed by the rotating shaft and the storage roller, without the need for manual intervention, thereby improving work efficiency.

[0026] 3. The large theater stage system disclosed in the present invention uses the second sliding rod in conjunction with the steel wire rope. When the steel wire rope breaks, components such as the wedge block and the sliding plate can respond quickly, and the lifting platform can be fixed by inserting the second plug rod into the second plug hole, thereby effectively preventing the lifting platform from falling suddenly and ensuring the safety of personnel.

[0027] 4. The large theater stage system disclosed in the present invention can easily realize the movement and splicing of the expansion platform through the coordinated action of the first hydraulic rod and the second hydraulic rod, so as to quickly change the shape and size of the stage according to the performance requirements. The splicing design of the expansion platform and the fixed platform not only increases the length of the stage, but also maintains the flatness and stability of the stage, providing a wider space and better visual effects for the performance.

[0028] In summary, this large theater stage system can make full use of the space under the stage through the setting of the foundation pit, and can realize the smooth lifting and lowering of the lifting platform and the automatic fixing of the handrails through hydraulic drive, ensuring that the performers can get on and off the stage safely and conveniently. At the same time, it has an automatic protection mechanism for wire rope breakage to effectively prevent the lifting platform from falling accidents. In addition, the shape of the stage can be flexibly adjusted according to needs, and the expansion platform can be pushed and spliced ​​by hydraulic rods to increase the stage length to meet the needs of diverse performances. The overall design is efficient, safe and flexible.

[0029] 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

[0030] 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:

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the large theater stage system of the present invention;

[0032] Figure 2 For the present invention Figure 1 Another structural diagram of a large theater stage system from another perspective;

[0033] Figure 3 For the present invention Figure 1 A cross-sectional view of a large theater stage system;

[0034] Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the middle driving part;

[0035] Figure 5For the present invention Figure 1 Schematic diagram of the installation structure of the middle lifting platform and handrails;

[0036] Figure 6 For the present invention Figure 1 A cross-sectional view of the middle mounting seat;

[0037] Figure 7 For the present invention Figure 1 Schematic diagram of the connection between the middle wedge and the sliding plate.

[0038] Figure numerals: 1, theater; 2, fixed platform; 3, expansion platform; 4, auxiliary screen; 5, main screen; 6, foundation pit; 7, equipment room; 8, first guide rod; 9, lifting platform; 10, handrail; 11, slide rail; 12, first hydraulic rod; 13, second hydraulic rod; 14, first rotating seat; 15, pulley; 16, second rotating seat; 17, rotating shaft; 18, hydraulic motor; 19, storage roller; 20, wire rope; 21, installation Mounting seat; 22, first plug rod; 23, first plug hole; 24, first sliding rod; 25, first fixed block; 26, second guide rod; 27, first spring; 28, inclined plane; 29, second sliding rod; 30, third rotating seat; 31, rectangular opening; 32, wedge block; 33, second fixed block; 34, third guide rod; 35, second spring; 36, second plug rod; 37, second plug hole; 38, sleeve rod; 39, sliding plate. DETAILED DESCRIPTION

[0039] 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.

[0040] like Figure 1-Figure 7 A large theater stage system is shown, the whole system is constructed inside the theater 1, a foundation pit 6 (cast with C30 concrete, with waterproof coating and drainage system) is opened at the bottom of the theater 1, and two equipment rooms 7 (made of 304 stainless steel frame + fireproof sound insulation board) are arranged in the foundation pit 6, so that the equipment room 7 does not need to use external space, and the foundation pit 6 can be used for actors to rehearse and line up. The bottom of the convex fixed platform 2 (the main body is Q345B high-strength steel welded truss, and the surface is paved with flame-retardant wooden floor) is firmly overlapped on the top of the two equipment rooms 7 in the foundation pit 6 at the bottom of the theater 1 through the truss, so that a stable expansion space is formed in the foundation pit. A movable expansion platform 3 is provided at each of the two notches of the fixed platform 2. In order to realize the movement of the expansion platform 3, a driving part is set at the bottom of the fixed platform 2.

[0041] Specifically, the driving member includes a slide rail 11 slidably arranged on the bottom truss of the fixed platform 2, and a first hydraulic rod 12 fixed to the bottom of the fixed platform 2. The output end of the first hydraulic rod 12 is connected to the slide rail 11, and two second hydraulic rods 13 arranged opposite to each other are fixed to the bottom of the slide rail 11, and the output ends of the two second hydraulic rods 13 are respectively connected to the two expansion platforms 3. Through the coordinated work of the first hydraulic rod 12 and the second hydraulic rod 13, the expansion platform 3 can be driven to move in an L shape to the front of the fixed platform 2, so as to adjust the shape of the stage as needed. These hydraulic rods are connected to the external hydraulic station through pipelines to realize the supply and control of power, and at the same time can reduce the noise generated during movement. The hydraulic station adopts a dual-pump redundant design, the system pressure is set to above 20MPa, and the oil circuit is equipped with an accumulator to cope with instantaneous loads.

[0042] On one side of the theater 1, a main screen 5 is set up to display the main stage picture. On both sides of the theater 1, there is also a sub-screen 4, which is offset from the main screen 5 but does not affect each other, and can form a multi-area display picture to provide the audience with a richer and more three-dimensional visual experience.

[0043] Two lifting platforms 9 (the frame is 6061-T6 aluminum alloy, and the table top is non-slip patterned steel plate) are also embedded on the fixed platform 2. The two lifting platforms 9 are used to lift actors or props so that they can be moved from the foundation pit 6 to the fixed platform 2. The lifting function of the lifting platform 9 is realized by a lifting mechanism arranged in the foundation pit 6. The lifting mechanism includes two groups of first guide rods 8 fixedly arranged in the foundation pit 6, and the two lifting platforms 9 are respectively slidably sleeved on the two groups of first guide rods 8. In order to realize the lifting and lowering of the lifting platform 9, two second rotating seats 16 are fixedly arranged at the bottom of the fixed platform 2, and a rotating shaft 17 is arranged between the two second rotating seats 16 for rotation through bearings. A hydraulic motor 18 is fixedly arranged on one side of one of the second rotating seats 16 by bolts, and the hydraulic motor 18 is connected to an external hydraulic station through a pipeline, and its output end is connected to the rotating shaft 17 through a coupling. The outer wall of the rotating shaft 17 is provided with two receiving rollers 19 through bolt fixing sleeves, and the outer wall of the receiving rollers 19 is fixed and wound with a steel wire rope 20 (6×19+FC structure, breaking tension ≥100kN). The other end of the steel wire rope 20 is fixedly connected to the bottom of the fixed platform 2 to form a U shape. When the hydraulic motor 18 is working, it will drive the rotating shaft 17 to rotate, and then drive the receiving rollers 19 to rotate, so that the steel wire rope 20 is tightened and drives the lifting platform 9 to move upward. During the descent process, the hydraulic motor 18 is started in the reverse direction to drive the rotating shaft 17 to rotate and release the stored steel wire rope 20. At this time, the lifting platform 9 can move downward under its own gravity.

[0044] In order to reduce the friction between the wire rope 20 and the lifting platform 9, two sets of first rotating seats 14 are fixedly provided at the bottom of the lifting platform 9, and pulleys 15 are rotatably provided in the first rotating seats 14 through rotating shafts and bearings. The outer wall of each set of pulleys 15 is provided with a groove adapted to the wire rope 20, so that the wire rope 20 can slide smoothly over the pulleys 15, reducing friction and wear.

[0045] In order to ensure the safety of the lifting platform 9 during the lifting process, the lifting mechanism also includes a locking assembly. The locking assembly includes two groups of second fixed blocks 33 fixedly arranged at the bottom of the lifting platform 9 by welding, and a third guide rod 34 is fixedly arranged between each group of second fixed blocks 33 by welding. The two third guide rods 34 are sleeved with the same sliding plate 39, and the outer wall of the third guide rod 34 is sleeved with a second spring 35. The two ends of the second spring 35 are respectively fixedly connected to one side of one of the second fixed blocks 33 and the sliding plate 39 close to each other. Two second plug rods 36 are fixedly arranged on one side of the sliding plate 39 by welding, and a plurality of second plug holes 37 adapted to the second plug rods 36 are opened on one side of the two first guide rods 8 located on one side. When the wire rope 20 breaks, the connecting piece will drive the second plug rod 36 to be inserted into the corresponding second plug hole 37, thereby locking the lifting platform 9 to prevent it from falling.

[0046] The specific structure of the connecting member is as follows: it includes two sleeve rods 38 fixedly arranged at the bottom of the lifting platform 9 by welding, and a second sliding rod 29 is slidably arranged in the sleeve rod 38. A third rotating seat 30 is fixedly arranged at the bottom of the second sliding rod 29 by welding, and a pulley 15 used in conjunction with the wire rope 20 is rotatably arranged in the third rotating seat 30 through a rotating shaft 17 and a bearing. A rectangular opening 31 is opened on one side of the sleeve rod 38, and a wedge block 32 used in conjunction with the sliding plate 39 is slidably arranged in the rectangular opening 31. The wedge block 32 is fixedly arranged on one side of the second sliding rod 29 by welding. When the wire rope 20 breaks, the gravity of the second sliding rod 29, the third rotating seat 30 and the pulley 15 will overcome the elastic force of the second spring 35, drive the sliding plate 39 to approach the two first guide rods 8, so that the second insertion rod 36 is inserted into the second insertion hole 37, and the lifting platform 9 is locked.

[0047] In addition, handrails 10 (304 stainless steel pipe, wall thickness 3mm) are also provided on the lifting platform 9, one of which is slidably arranged on the lifting platform 9, and the handrail 10 is exposed from the top of the lifting platform 9 in coordination with the lifting of the lifting platform 9, and is used to support the actors when they rise from the foundation pit 6. A fixing piece is provided at the bottom of the lifting platform 9, which is used to lock the handrail 10 on the lifting platform 9. When the lifting platform 9 rises to its proper position, the fixing piece can be used in conjunction with the truss to release the fixing of the handrail 10, and at this time the handrail 10 can be reset and moved downward under its own gravity to prevent the handrail 10 from hindering the actors from walking.

[0048] The specific structure of the fixing part is as follows: it includes two mounting seats 21 sleeved on the handrail 10, and the mounting seats 21 are fixedly connected to the lifting platform 9 by welding. A first sliding rod 24 is slidably provided on one side of the mounting seat 21, and a first plug rod 22 is fixedly provided on one side of the first sliding rod 24. A first plug hole 23 for use with the first plug rod 22 is provided on the outer wall of the handrail 10. A first fixed block 25 is fixedly provided on one side of the first sliding rod 24, and a first spring 27 for driving the first sliding rod 24 to move is provided between the first fixed block 25 and the mounting seat 21. An inclined surface 28 for use with the truss is provided on the top of one end of the first sliding rod 24. When the lifting platform 9 rises to its position, the truss will press the inclined surface 28, so that the first sliding rod 24 slides inside the mounting seat 21, and drives the first plug rod 22 to disengage from the first plug hole 23, thereby releasing the locking of the first plug rod 22 on the handrail 10.

[0049] In order to ensure the stable sliding of the first sliding rod 24, a second guide rod 26 is slidably provided on one side of the first fixing block 25, and one end of the second guide rod 26 is welded to the mounting seat 21. The first spring 27 is sleeved on the second guide rod 26 and is located between the first fixing block 25 and the mounting seat 21. In this way, when the truss compresses the inclined surface 28, the first sliding rod 24 can stably slide along the second guide rod 26, and the first spring 27 can provide the necessary elastic force to ensure that the first insertion rod 22 can be accurately inserted into or pulled out of the first insertion hole 23.

[0050] When the large theater stage system is in use, performers and staff stand on the lifting platform 9 on the right side, and start the hydraulic motor 18 on the right side of the theater 1 through the external hydraulic station to rotate in the opposite direction, which can drive the rotating shaft 17 to rotate. The rotation of the rotating shaft 17 can drive the storage roller 19 to rotate, and the wire rope 20 on the storage roller 19 is released. During the release process, the lifting platform 9 can move downward under gravity until it reaches the bottom, and then the personnel can enter the foundation pit 6 to wait for the performance, put on makeup and rehearse.

[0051] When getting on the platform, the hydraulic motor 18 on the left is started to rotate in the opposite direction, and the wire rope 20 on the storage roller 19 is released, so that the lifting platform 9 on the left moves downward, and the handrail 10 above can be driven to move downward during the downward movement. When the handrail 10 touches the ground, the lifting platform 9 continues to move downward on the handrail 10 until it moves into place. At this time, the first plug rod 22 corresponds to the first plug hole 23, and the first fixing block 25 can be reset and moved under the action of the first spring 27, and drive the first sliding rod 24 to move. The movement of the first sliding rod 24 can drive the first plug rod 22 to be inserted into the first plug hole 23, and the handrail 10 is fixed on the lifting platform 9, and then the performer stands on the lifting platform 9 on the left, holding the handrail 10, and then starting the hydraulic motor 18 to rotate forward, driving the storage roller 19 to rotate. The storage roller 19 can store the wire rope 20 during its rotation. The wire rope 20 drives the lifting platform 9 to move upward during the storage process, thereby transporting the performers from the foundation pit 6 to the fixed platform 2. After the lifting platform 9 moves upward into place, the first sliding rod 24 drives the first sliding rod 24 to move rightward under the action of the inclined surface 28 and the support frame. The movement of the first sliding rod 24 can drive the first plug rod 22 to disengage from the first plug hole 23. At this time, the handrail 10 can automatically drop under gravity to avoid affecting the movement of people.

[0052] During the process of retracting and releasing the wire rope 20, when the wire rope 20 breaks, the third rotating seat 30 can move downward under the action of gravity, and can drive the second sliding rod 29 to move downward. The downward movement of the second sliding rod 29 can drive the wedge block 32 to move downward. During the downward movement of the wedge block 32, it can push the sliding plate 39 to move on the two third guide rods 34 and compress the second spring 35. At the same time, it can drive the second plug rod 36 to move toward the first guide rod 8, so that the second plug rod 36 is inserted into the corresponding second socket 37, which can fix the lifting platform 9 and avoid sudden falling accidents.

[0053] When the shape of the stage needs to be changed, the first hydraulic rod 12 can be started to push the slide rail 11 to move on the support frame below. During the movement, the two second hydraulic rods 13 can be driven to move. The movement of the two second hydraulic rods 13 can drive the two expansion platforms 3 to move forward at the same time. When the two expansion platforms 3 are completely moved to the front of the fixed platform 2, the two second hydraulic rods 13 are started to retract, which can drive the two expansion platforms 3 to move relative to each other, so that they can be spliced ​​in front of the fixed platform 2, thereby increasing the length of the stage.

[0054] 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 large theater stage system, characterized in that: The fixed platform (2) is arranged in a theater (1), the fixed platform (2) is convex, and expansion platforms (3) are arranged in two notches of the fixed platform (2). A driving member is arranged at the bottom of the fixed platform (2), and the two expansion platforms (3) are driven by the power of the driving member to move to the front of the fixed platform (2), so as to expand the shape of the stage as required; A main screen (5), the main screen (5) is arranged on one side of the theater (1), and two auxiliary screens (4) are arranged on both sides of the theater (1), the two auxiliary screens (4) and the main screen (5) are offset from each other and do not affect each other, so as to form a multi-area display screen; A foundation pit (6) is provided at the bottom of the theater (1), two equipment rooms (7) are provided in the foundation pit (6), a fixed platform (2) is overlapped on the equipment room (7) and the top of the foundation pit (6) by means of trusses to form an expansion space, two lifting platforms (9) are also embedded on the fixed platform (2), and a lifting mechanism for driving the lifting platforms (9) to move upward and downward is provided in the foundation pit (6); the lifting mechanism includes a locking component for locking the lifting platforms (9) after failure to prevent the lifting platforms (9) from falling.

2. The large theater stage system according to claim 1, characterized in that: The driving member comprises a slide rail (11) slidably arranged on a truss at the bottom of the fixed platform (2); a first hydraulic rod (12) is fixedly arranged at the bottom of the fixed platform (2); an output end of the first hydraulic rod (12) is fixedly connected to the slide rail (11); two second hydraulic rods (13) set opposite to each other are fixedly arranged at the bottom of the slide rail (11); output ends of the second hydraulic rods (13) are fixedly connected to corresponding expansion platforms (3); the expansion platforms (3) are driven to move in an L shape to the front of the fixed platform (2) by the power of the first hydraulic rod (12) and the two second hydraulic rods (13); the first hydraulic rod (12) and the two second hydraulic rods (13) are connected to an external hydraulic station through pipelines.

3. The large theater stage system according to claim 2, characterized in that: The lifting mechanism comprises two groups of first guide rods (8) fixedly arranged in the foundation pit (6), two lifting platforms (9) respectively slidably sleeved on the two groups of first guide rods (8), two second rotating seats (16) fixedly arranged at the bottom of the fixed platform (2), a rotating shaft (17) rotatably arranged between the two second rotating seats (16) via a bearing, a hydraulic motor (18) fixedly arranged on one side of one of the second rotating seats (16) via bolts, the hydraulic motor (18) is connected to an external hydraulic station via a pipeline, the output end of the hydraulic motor (18) is connected to the rotating shaft (17) via a coupling, two storage rollers (19) are sleeved on the outer wall of the rotating shaft (17) via bolts, a steel wire rope (20) is fixedly arranged on the outer wall of the storage roller (19), the other end of the steel wire rope (20) is fixedly connected to the bottom of the fixed platform (2) to form a U-shape, the lifting platform (9) contacts the middle sections of the two steel wire ropes (20), and the lifting platform (9) is driven by the hydraulic motor (18) to tighten the steel wire rope (20) to drive the lifting platform (9) to move upward.

4. The large theater stage system according to claim 3, characterized in that: Two groups of first rotating seats (14) are fixedly provided at the bottom of the lifting platform (9), and pulleys (15) are rotatably provided in the first rotating seats (14) via rotating shafts and bearings. The outer wall of each group of pulleys (15) is provided with a groove adapted to the steel wire rope (20), and the pulleys (15) and the steel wire rope (20) are used to reduce the friction between the steel wire rope (20) and the lifting platform (9).

5. The large theater stage system according to claim 4, characterized in that: The locking assembly comprises two groups of second fixing blocks (33) fixedly arranged at the bottom of the lifting platform (9) by welding, a third guide rod (34) is fixedly arranged between each group of second fixing blocks (33) by welding, the two third guide rods (34) are sleeved with the same sliding plate (39), the outer wall of the third guide rod (34) is sleeved with a second spring (35), the two ends of the second spring (35) are respectively fixedly connected to one side of one of the second fixing blocks (33) and the sliding plate (39) close to each other, two second insertion rods (36) are fixedly arranged on one side of the sliding plate (39) by welding, a plurality of second insertion holes (37) matched with the second insertion rods (36) are opened on one side of the two first guide rods (8) located on one side, and a connecting piece used in conjunction with the steel wire rope (20) is provided at the bottom of the lifting platform (9), and when the steel wire rope (20) breaks, the connecting piece drives the second insertion rod (36) to be inserted into the corresponding second insertion hole (37).

6. The large theater stage system according to claim 5, characterized in that: The connecting member comprises two sleeve rods (38) fixedly arranged at the bottom of the lifting platform (9) by welding, a second sliding rod (29) is slidably arranged in the sleeve rods (38), a third rotating seat (30) is fixedly arranged at the bottom of the second sliding rod (29) by welding, a pulley (15) used in conjunction with the wire rope (20) is rotatably arranged in the third rotating seat (30) through a rotating shaft (17) and a bearing, a rectangular opening (31) is opened on one side of the sleeve rod (38), a wedge block (32) used in conjunction with the sliding plate (39) is slidably arranged in the rectangular opening (31), the wedge block (32) is fixedly arranged on one side of the second sliding rod (29) by welding, and the gravity of the second sliding rod (29), the third rotating seat (30) and the pulley (15) is used to overcome the elastic force of the second spring (35), so as to drive the sliding plate (39) to approach the two first guide rods (8).

7. The large theater stage system according to claim 1, characterized in that: The lifting platform (9) is provided with a handrail (10), one of which is slidably arranged on the lifting platform (9), and cooperates with the lifting of the lifting platform (9) so that the handrail (10) is exposed from the top of the lifting platform (9) to support the actors when they rise from the foundation pit (6). The bottom of the lifting platform (9) is provided with a fixing piece to lock the handrail (10) on the lifting platform (9), and after the lifting platform (9) is in place, the fixing piece can be used in conjunction with the truss to release the fixing of the handrail (10), so as to prevent the handrail (10) from hindering the actors from walking.

8. The large theater stage system according to claim 7, characterized in that: The fixing member comprises two mounting seats (21) sleeved on the handrail (10), the mounting seats (21) being fixedly connected to the lifting platform (9) by welding, a first sliding rod (24) slidingly extending through one side of the mounting seat (21), a first insertion rod (22) being fixedly provided on one side of the first sliding rod (24), a first insertion hole (23) for use with the first insertion rod (22) being provided on the outer wall of the handrail (10), a first fixing block (25) being fixedly provided on one side of the first sliding rod (24), a first spring (27) for driving the first sliding rod (24) to move being provided between the first fixing block (25) and the mounting seat (21), and an inclined surface (28) for use with the truss being provided on the top of one end of the first sliding rod (24).

9. The large theater stage system according to claim 8, characterized in that: A second guide rod (26) is slidably provided through one side of the first fixing block (25), one end of the second guide rod (26) is welded to the mounting seat (21), and a first spring (27) is sleeved on the second guide rod (26) and is located between the first fixing block (25) and the mounting seat (21).

10. The method for using the large theater stage system according to any one of claims 3 to 9, characterized in that: The following steps are involved: S1, starting the hydraulic motor (18) on the right side of the theater (1) to rotate in the reverse direction, so as to transport the staff and performers into the foundation pit (6); S2, starting the left starting hydraulic motor (18) to rotate forward, and transporting the performers to the fixed platform (2); S3. According to the demonstration effect, the first hydraulic rod (12) and the second hydraulic rod (13) are activated to move the expansion platform (3) on both sides of the fixed platform (2) to the front of the fixed platform (2), thereby changing the shape of the stage to meet different needs.

Images