A flexible set for a theatrical performance

Abstract

The application discloses a flexible scenery for a performance, which comprises a rattan bridge, a rattan bridge storage cavity, a first limiting piece, a lifting piece, a lifting device and a tensioning device. The rattan bridge comprises a plurality of main rattan strips, and the main rattan strips have first ends and second ends. The rattan bridge storage cavity is used for storing the main body structure of the rattan bridge. The first limiting piece is arranged on a fixed object and is located obliquely above the rattan bridge storage cavity, and the first limiting piece is used for allowing the first ends of the main rattan strips to pass through. The lifting piece can be lifted or lowered, and the first ends of the main rattan strips are arranged on the lifting piece after passing through the first limiting piece. The lifting device is used for driving the lifting piece to be lifted or lowered. The tensioning device is arranged on the side away from the first limiting piece. The tensioning device comprises a moving seat and a hanging mechanism arranged on the moving seat and used for mounting the second ends of the main rattan strips of the rattan bridge. The tensioning device further comprises a telescopic mechanism with a telescopic rod connected with the moving seat and used for driving the moving seat to move and tensioning the main rattan strips. The rattan bridge can be folded and unfolded more simply.

Description

Technical Field

[0001] The present invention relates to the field of performing arts equipment, and in particular to a flexible scenery for performing arts performances. Background Art

[0002] A rattan bridge is made of multiple rattans woven into a net curtain to form the shape of a bridge. It usually includes multiple main rattans. The construction of the rattan bridge can be completed by tightening the main rattans.

[0003] In performance scenes that require a vine bridge, the vines will be set up in advance. Because the construction is rather cumbersome, they are usually not removed after they are set up. The constant existence of the vine bridge will seriously affect the presentation of the entire scene in the performance area. In other scenes that do not require a vine bridge, other props are often needed to cover the vine bridge, which will greatly restrict the scene layout. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a flexible scenery for performing arts performances.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A flexible scenery for performing arts performances, comprising:

[0007] A vine bridge having a plurality of main vines, each of the main vines having a first end and a second end;

[0008] The vine bridge storage cavity is used to store the main structure of the vine bridge;

[0009] a first limiting member, configured to be disposed on a fixed object and located obliquely above the rattan bridge storage cavity, wherein the first limiting member is configured to allow the first end of the main rattan to pass through;

[0010] a lifting member capable of rising or falling, wherein the first end of the main rattan passes through the first limiting member and is disposed on the lifting member;

[0011] A lifting device, used to drive the lifting member to rise or fall; and

[0012] A tensioning device, arranged on a side away from the first limiting member;

[0013] The tensioning device comprises:

[0014] Mobile seat;

[0015] A mounting mechanism is provided on the movable base and is used for mounting the second end of the main cane of the cane bridge;

[0016] The telescopic mechanism comprises a telescopic rod, which is connected to the movable seat and is used for driving the movable seat to move so as to tighten the main rattan.

[0017] The rattan bridge of the present application is formed by weaving a plurality of rattans into a net curtain shape to form the shape of a bridge. When the rattan bridge is unfolded and used, the lifting device controls the lifting member to descend from the highest point to the lowest point, and the free end of the rattan bridge is pulled out of the rattan bridge storage cavity by manual labor or other equipment. The rattan bridge is unfolded, and the free end of the rattan bridge (the second end of the main rattan) is manually hung on the mounting mechanism of the tensioning device, and then the telescopic rod is operated to move the movable seat to the side away from the rattan bridge. At this time, the main rattan can be tensioned quickly and reliably, that is, the slack rattan bridge can be tightened. A vine bridge is formed; when the vine bridge is folded, the telescopic rod works to move the movable seat toward the side close to the vine bridge, the vine bridge is relaxed, and the free end of the vine bridge (the second end of the main rattan) is removed from the mounting mechanism of the tensioning device, and then the lifting device works to move the lifting member upward, and the lifting member tightens the vine bridge through the first end of the main rattan and quickly folds it (the vine bridge shrinks and moves toward the side of the first limit member), and then the free end of the relaxed vine bridge can be manually placed into the vine bridge storage cavity for storage. At this time, the lifting member is at the highest point and the vine bridge is in a folded state.

[0018] The flexible scenery used in the present application for performing arts performances can realize the folding and unfolding operation of the vine bridge relatively simply.

[0019] In actual use, the effective length of the vine bridge is about 15 meters.

[0020] In one embodiment of the present invention, the lifting member is directly opposite to the upper opening of the vine bridge storage cavity.

[0021] In one embodiment of the present invention, the mounting mechanism includes a plurality of mounting components, and the mounting components include:

[0022] The frame is fixed on the mobile base;

[0023] A locking assembly is arranged on the frame;

[0024] A rotating member is rotatably mounted on the frame. The rotating member has a mounting portion and a locking portion. The mounting portion is used to mount the second end of the main rattan of the rattan bridge. The rotating member has an initial working position and a locking working position. In the initial working position, the mounting portion faces one side of the rattan bridge. In the locking working position, the mounting portion faces away from the side of the rattan bridge, and the locking portion cooperates with the locking assembly, so that the rotating member is locked and maintained in the locking working position.

[0025] In the initial working position, the mounting portion faces the side of the vine bridge, which can facilitate the installation or removal of the second end of the main rattan; in the locking working position, the mounting portion faces away from the side of the vine bridge, which can effectively prevent the second end of the main rattan from detaching from the mounting portion.

[0026] In actual use, preferably, the second end of the main rattan is formed with an end that cooperates with the mounting portion, and the main rattan can be quickly hung on the mounting portion through the hanging hole.

[0027] In one of the embodiments of the present application, the locking assembly comprises:

[0028] A locking rod is slidingly arranged on the frame, and has a first state and a second state. In the first state, the locking rod forms a limiting groove with the frame, and the end of the locking part is located in the limiting groove when the rotating part is in the locking working position. In the second state, the locking rod is moved, and the locking part can be separated from the limiting groove.

[0029] An elastic member cooperates with the locking rod, and is used to drive the locking rod to move, so that the locking rod has a moving tendency to keep or switch to the first state.

[0030] An unlocking element is used to drive the locking rod to move, so that the locking rod is switched from the first state to the second state.

[0031] In actual application, the elastic member can be a tension spring or a compression spring.

[0032] In one of the embodiments of the present application, the unlocking element is an automatic telescopic member.

[0033] In one of the embodiments of the present application, each locking assembly shares one unlocking element, and the unlocking element comprises:

[0034] A first winding wheel is rotatably arranged on the moving seat.

[0035] A plurality of first ropes are connected at one end to the corresponding locking rods and at the other end to the first winding wheel.

[0036] A first winding wheel driving mechanism is used to drive the first winding wheel to rotate, so as to pull the plurality of first ropes to move.

[0037] The unlocking element is arranged in this way, so that the unlocking can be performed synchronously, and the whole structure is simple and reliable.

[0038] In one of the embodiments of the present application, the first winding wheel driving mechanism is an electric push rod or an air cylinder.

[0039] In one of the embodiments of the present application, the locking assembly further comprises a roller arranged on both sides of the locking rod.

[0040] The arrangement of the roller can reduce the friction and ensure the reliable movement of the locking rod.

[0041] In one of the embodiments of the present application, the rotating part is V-shaped, the end of the hanging part has an embedding groove, and an anti-disengagement member is hinged in the embedding groove. In the initial working position, the anti-disengagement member is completely embedded in the embedding groove under the action of its own gravity. In the locking working position, the anti-disengagement member is in a vertical state under the action of its own gravity, and the anti-disengagement member and the hanging part form an anti-disengagement angle.

[0042] After the anti-fall-off angle is formed, even if the second end of the main rattan is accidentally forced to move upward (move upward along the length direction of the mounting portion), it will not fall off the mounting portion, which is safer.

[0043] In one embodiment of the present invention, the mounting mechanism further includes a switching component, and the switching component includes:

[0044] A torsion spring is provided on the rotating member and the frame, and is used to make the rotating member have a rotation tendency toward the initial working position;

[0045] a second winding wheel, rotatably arranged on the movable seat;

[0046] a plurality of second ropes, one end of each second rope being connected to a corresponding rotating member, and the other end of each second rope being connected to the second winding wheel;

[0047] The second winding wheel driving mechanism is used to drive the second winding wheel to rotate, thereby pulling the multiple second ropes to move, so that the rotating member overcomes the elastic force of the torsion spring and switches to the locking working position.

[0048] In one embodiment of the present invention, the second take-up wheel driving mechanism is a self-locking motor.

[0049] Compared with the switching of the locking rod state, the working position switching stroke of the rotating part is larger (the second rope moves a longer distance). If a cylinder or electric push rod is used, the required length is larger. The use of a self-locking motor can effectively reduce the length. In addition, the second rope can be limited by self-locking, that is, a two-level lock structure is formed to prevent the rotating part from being unlocked due to the accidental switching of the locking rod to the second state.

[0050] In one embodiment of the present invention, the tensioning device further includes a guide rail, and the movable seat cooperates with the guide rail via a movable wheel.

[0051] In one embodiment of the present invention, the telescopic mechanism is an electric push rod or a hydraulic cylinder.

[0052] The beneficial effect of the present invention is that the flexible scenery used for performing arts performances can realize the folding and unfolding operation of the vine bridge in a relatively simple manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a schematic diagram of a flexible scenery for performing arts performances when the vine bridge is unfolded in Example 1;

[0054] Figure 2 This is a schematic diagram of the lifting member rising to retract the vine bridge;

[0055] Figure 3 is a schematic diagram of the tensioning device when the rotating member of Example 1 is in the initial working position;

[0056] Figure 4is a schematic diagram of the tensioning device when the rotating member of Example 1 is in the locking working position;

[0057] Figure 5 This is a schematic diagram of the telescopic mechanism in Example 1 driving the movable seat to move and tension the rattan bridge;

[0058] Figure 6 yes Figure 3 Enlarged view of point A in the middle;

[0059] Figure 7 yes Figure 4 The enlarged image of the middle B;

[0060] Figure 8 is a schematic diagram of the mounting assembly of Example 2;

[0061] Figure 9 is a schematic diagram of the tensioning device of Example 2;

[0062] Figure 10 This is a schematic diagram of Example 1 after the vine bridge is folded into the vine bridge storage cavity.

[0063] The reference numerals in the figures are:

[0064] 100, rattan bridge; 101, main rattan; 102, first end; 103, second end; 200, tensioning device; 1, movable seat; 11, movable wheel; 2, mounting mechanism; 21, mounting assembly; 211, frame; 212, locking assembly; 2120, limiting groove; 2121, locking rod; 2121a, guide slope; 2122, roller; 213, rotating member; 2131, mounting portion; 2132. Locking part; 2133. Anti-slip part; 2134. Anti-slip angle; 214. Elastic part; 2151. First reel; 2152. First rope; 2153. First reel driving mechanism; 221. Second reel; 222. Second rope; 3. Telescopic mechanism; 31. Telescopic rod; 4. Guide rail; 5. Vine bridge storage chamber; 6. First limit part; 7. Lifting part; 8. Lifting device. DETAILED DESCRIPTION

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0066] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0067] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0068] The present invention will be described in detail below with reference to the accompanying drawings.

[0069] Example 1

[0070] like Figures 1 to 7 As shown, a vine bridge 100 retracting and extending system includes:

[0071] The vine bridge 100 has a plurality of main vines 101, each of the main vines 101 having a first end 102 and a second end 103;

[0072] The vine bridge storage cavity 5 is used to store the main structure of the vine bridge 100;

[0073] A first stopper 6 is provided on a fixed object and is located obliquely above the rattan bridge receiving cavity 5 . The first stopper 6 is used to allow the first end 102 of the main rattan 101 to pass through.

[0074] The lifting member 7 can be raised or lowered, and the first end 102 of the main rattan 101 passes through the first limiting member 6 and is then set on the lifting member 7;

[0075] A lifting device 8, used to drive the lifting member 7 to rise or fall; and

[0076] The tensioning device 200 is provided on a side away from the first limiting member 6;

[0077] like Figures 3 to 7 As shown, the tensioning device 200 includes:

[0078] Mobile seat 1;

[0079] The mounting mechanism 2 is provided on the movable base 1 and is used for mounting the second end 103 of the main rattan 101 of the rattan bridge 100;

[0080] The telescopic mechanism 3 has a telescopic rod 31 , which is connected to the movable seat 1 and is used to drive the movable seat 1 to move so as to tighten the main rattan 101 .

[0081] The rattan bridge of the present application is made of multiple rattans woven into a net curtain shape to form the shape of a bridge. When the rattan bridge 100 is unfolded and used, Figure 1 The lifting device 8 controls the lifting member 7 to descend from the highest point to the lowest point. The free end of the vine bridge 100 is pulled out of the vine bridge storage chamber 5 manually or by other equipment. The vine bridge 100 is unfolded, and the free end of the vine bridge 100 (the second end 103 of the main rattan 101) is manually hung on the mounting mechanism 2 of the tensioning device 200. Then the telescopic rod 31 is activated to move the movable seat 1 away from the vine bridge 100. At this time, the main rattan 101 can be quickly and reliably tensioned, that is, the slack vine bridge 100 is tightened to form the vine bridge 100. When the vine bridge 100 is to be retracted, the telescopic rod 31 is activated to move the movable seat 1 toward the side close to the vine bridge 100. The vine bridge 100 is relaxed, and the free end of the vine bridge 100 (the second end 103 of the main rattan 101) is removed from the mounting mechanism 2 of the tensioning device 200. Figure 2 Then the lifting device 8 works to move the lifting member 7 upward, and the lifting member 7 tightens the vine bridge 100 through the first end 102 of the main rattan 101 to quickly retract (the vine bridge 100 shrinks and moves to the side of the first limit member 6); see Figure 10 Then, the free end of the loosened vine bridge 100 can be manually placed into the vine bridge storage chamber 5 for storage. At this time, the lifting member 7 is at the highest point and the vine bridge 100 is in a retracted state.

[0082] The folding and extending system of the vine bridge 100 of the present application can realize the folding and extending operation of the vine bridge 100 relatively simply.

[0083] In actual use, the effective length of Tengqiao 100 is about 15 meters.

[0084] like Figure 1 and 2 As shown, in this embodiment, the lifting member 7 is directly opposite to the upper end opening of the vine bridge storage chamber 6.

[0085] like Figure 6 and 7 As shown, in this embodiment, the mounting mechanism 2 includes a plurality of mounting components 21, and the mounting components 21 include:

[0086] Frame 211, fixed on the mobile base 1;

[0087] A locking assembly 212 is provided on the frame 211;

[0088] The rotating member 213 is rotatably mounted on the frame 211. The rotating member 213 has a mounting portion 2131 and a locking portion 2132. The mounting portion 2131 is used to mount the second end 103 of the main rattan 101 of the rattan bridge 100. The rotating member 213 has an initial working position and a locking working position. In the initial working position, the mounting portion 2131 faces one side of the rattan bridge 100. In the locking working position, the mounting portion 2131 faces away from the side of the rattan bridge 100, and the locking portion 2132 cooperates with the locking assembly 212, and the rotating member 213 is locked and maintained in the locking working position.

[0089] In the initial working position, the mounting portion 2131 faces one side of the vine bridge 100, which can facilitate the installation or removal of the second end 103 of the main rattan 101; in the locking working position, the mounting portion 2131 faces away from the side of the vine bridge 100, which can effectively prevent the second end 103 of the main rattan 101 from detaching from the mounting portion 2131.

[0090] In actual use, preferably, a hanging hole is formed at one end of the second end 103 of the main rattan 101 that cooperates with the mounting portion 2131 , and the main rattan 101 can be quickly hung on the mounting portion 2131 through the hanging hole.

[0091] like Figure 6 and 7 As shown, in this embodiment, the locking assembly 212 includes:

[0092] The locking rod 2121 is slidably mounted on the frame 211 and has a first state and a second state. In the first state, the locking rod 2121 and the frame 211 form a limiting groove 2120. When the rotating member 213 is in the locking working position, the end of the locking portion 2132 is located in the limiting groove 2120. In the second state, the locking rod 2121 moves, and the locking portion 2132 can be disengaged from the limiting groove 2120.

[0093] The elastic member 214 cooperates with the locking rod 2121 to drive the locking rod 2121 to move, so that the locking rod 2121 has a movement tendency to maintain or switch to the first state;

[0094] The unlocking element is used to drive the locking rod 2121 to move, so that the locking rod 2121 switches from the first state to the second state.

[0095] In actual use, the elastic member 214 can be a tension spring or a compression spring. In actual use, the unlocking element can be an automatic telescopic member.

[0096] like Figure 3 and 4 As shown, in this embodiment, each locking assembly 212 shares a common unlocking element, which includes:

[0097] The first winding wheel 2151 is rotatably mounted on the movable base 1;

[0098] Multiple first ropes 2152 , one end of each first rope 2152 being connected to the corresponding locking rod 2121 , and the other end being connected to the first reel 2151 ;

[0099] The first winding wheel driving mechanism 2153 is used to drive the first winding wheel 2151 to rotate, thereby pulling the multiple first ropes 2152 to move.

[0100] The unlocking element is arranged in this way so that unlocking can be performed synchronously, and the entire structure is simple and reliable.

[0101] In this embodiment, the first take-up wheel driving mechanism 2153 is an electric push rod or a cylinder.

[0102] like Figure 6 and 7 As shown, in this embodiment, the locking assembly 212 further includes rollers 2122 provided on both sides of the locking rod 2121. The rollers 2122 can reduce friction and ensure reliable movement of the locking rod 2121.

[0103] like Figure 6 and 7 As shown, in this embodiment, the rotating member 213 is V-shaped.

[0104] like Figure 3 and 4 As shown, in this embodiment, the tensioning device 200 further includes a guide rail 4, and the movable base 1 cooperates with the guide rail 4 via a movable wheel 11. In this embodiment, the telescopic mechanism 3 is an electric push rod or a hydraulic cylinder.

[0105] Example 2

[0106] like Figure 8 As shown, one difference between this embodiment and embodiment 1 is that the end of the mounting portion 2131 has an embedding groove, and an anti-slip component 2133 is hinged in the embedding groove. In the initial working position, the anti-slip component 2133 is completely embedded in the embedding groove under the action of its own gravity. In the locking working position, the anti-slip component 2133 is in a vertical state under the action of its own gravity, and the anti-slip component 2133 and the mounting portion 2131 form an anti-slip angle 2134.

[0107] After the anti-fall-off angle 2134 is formed, even if the main rattan 101 is accidentally forced to move upward (move upward along the length direction of the hanging part 2131), it will not fall off the hanging part 2131, which is safer.

[0108] like Figure 9 As shown, another difference between this embodiment and embodiment 1 is that the mounting mechanism 2 further includes a switching component, which includes:

[0109] A torsion spring (omitted and not shown in the figure) is provided on the rotating member 213 and the frame 211, and is used to make the rotating member 213 have a rotation tendency to turn to the initial working position;

[0110] The second winding wheel 221 is rotatably mounted on the movable base 1;

[0111] a plurality of second ropes 222 , one end of each second rope 222 being connected to the corresponding rotating member 213 , and the other end being connected to the second winding wheel 221 ;

[0112] The second winding wheel 221 driving mechanism (omitted and not shown in the figure) is used to drive the second winding wheel 221 to rotate, thereby pulling the multiple second ropes 222 to move, so that the rotating member 213 overcomes the elastic force of the torsion spring and switches to the locking working position.

[0113] By switching the torsion spring of the assembly and the driving mechanism of the second winding wheel 221, the working position of the rotating member 213 can be automatically switched, making the entire operation more convenient.

[0114] In actual use, the drive mechanism for the second winding wheel 221 is preferably a self-locking motor. Compared to the state switching of the locking rod 2121, the working position switching stroke of the rotating member 213 is longer (the second rope 222 moves a greater distance). If a pneumatic cylinder or electric push rod were used, the required length would be longer. The use of a self-locking motor can effectively reduce this length. Furthermore, the self-locking mechanism can restrain the second rope 222, forming a double-lock structure, preventing the rotating member 213 from being unlocked due to the locking rod 2121 accidentally switching to the second state.

[0115] The above description is only a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, directly or indirectly applied to other related technical fields, is also included in the scope of protection of the present invention.

Claims

1. A flexible scenery for performing arts performances, characterized in that: include: A vine bridge having a plurality of main vines, each of the main vines having a first end and a second end; The vine bridge storage cavity is used to store the main structure of the vine bridge; a first limiting member, configured to be disposed on a fixed object and located obliquely above the rattan bridge storage cavity, wherein the first limiting member is configured to allow the first end of the main rattan to pass through; a lifting member capable of rising or falling, wherein the first end of the main rattan passes through the first limiting member and is disposed on the lifting member, and the lifting member is directly opposite to the upper end opening of the rattan bridge storage cavity; A lifting device, used to drive the lifting member to rise or fall; as well as A tensioning device, arranged on a side away from the first limiting member; The tensioning device comprises: Mobile seat; A mounting mechanism is provided on the movable base and is used for mounting the second end of the main cane of the cane bridge; The telescopic mechanism comprises a telescopic rod connected to the movable seat and used for driving the movable seat to move so as to tension the main rattan; The mounting mechanism includes a plurality of mounting components, and the mounting components include: The frame is fixed on the mobile base; A locking assembly is arranged on the frame; A rotating member is rotatably mounted on the frame. The rotating member has a mounting portion and a locking portion. The mounting portion is used to mount the main rattan of the rattan bridge. The rotating member has an initial working position and a locking working position. In the initial working position, the mounting portion faces one side of the rattan bridge. In the locking working position, the mounting portion faces away from the side of the rattan bridge, and the locking portion cooperates with the locking assembly, so that the rotating member is locked and maintained in the locking working position.

2. The flexible scenery for performing arts performances according to claim 1, characterized in that: The locking assembly comprises: a locking rod slidably disposed on the frame, the locking rod having a first state and a second state. In the first state, the locking rod and the frame form a limiting groove, and when the rotating member is in the locking working position, the end of the locking portion is located in the limiting groove. In the second state, the locking rod moves, and the locking portion can be disengaged from the limiting groove. an elastic member, cooperating with the locking rod, and configured to drive the locking rod to move so that the locking rod has a movement tendency to maintain or switch to the first state; The unlocking element is used to drive the locking rod to move, so that the locking rod switches from the first state to the second state.

3. The flexible scenery for performing arts performances according to claim 2, characterized in that: The unlocking element is an automatic telescopic part.

4. The flexible scenery for performing arts performances according to claim 2, wherein: The locking assemblies of multiple mounting assemblies share an unlocking element, and the unlocking element includes: A first winding wheel is rotatably arranged on a movable seat; a plurality of first ropes, one end of each of the first ropes being connected to a locking rod of a locking assembly of a corresponding mounting assembly, and the other end of each of the first ropes being connected to the first reel; The first winding wheel driving mechanism is used to drive the first winding wheel to rotate, thereby pulling the multiple first ropes to move.

5. The flexible scenery for performing arts performances according to claim 4, characterized in that: The first winding wheel driving mechanism is an electric push rod or a cylinder.

6. The flexible scenery for performing arts performances according to claim 2, wherein: The locking assembly further includes rollers arranged on both sides of the locking rod.

7. The flexible scenery for performing arts performances according to claim 1, wherein: The tensioning device also includes a guide rail, and the movable seat cooperates with the guide rail through a movable wheel.

8. The flexible scenery for performing arts performances according to claim 1, wherein: The telescopic mechanism is an electric push rod or a hydraulic cylinder.

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