An entertainment performance mobile device

Abstract

The application discloses a mobile device for performing arts, comprising: a mounting base; an outer ring track; an inner ring track; a stage frame mounted on the outer ring track and the inner ring track; a first limiting wheel set; a second limiting wheel set; a reversing wheel; a traction driving mechanism with a first winding drum, a second winding drum and a driving structure; a first traction rope, one end of which is wound on the first winding drum, and the other end is fixed on the stage frame after being matched with the first limiting wheel from the first end of the first limiting wheel set; and a second traction rope, one end of which is wound on the second winding drum, and the other end is matched with the second limiting wheel set, then passes through the reversing wheel, is matched with a plurality of second limiting wheels from the second end of the first limiting wheel set, and is finally fixed on the stage frame. The two independent traction ropes are wound on the two winding drums respectively, are accurately guided through corresponding guide wheel sets, are attached to the stage frame, form a closed loop, and can very well adapt to the unequal length requirement of an arc-shaped path and run smoothly.

Description

Technical Field

[0001] This invention relates to the field of stage equipment, and more specifically to a mobile device for performing arts. Background Technology

[0002] Large-scale curved sliding equipment (such as giant rotating stages, large observatory domes, heavy-duty curved retractable roofs, and large curved display walls / screens) are the jewels of the project, but also the most challenging aspects of the technology.

[0003] Traditional drive systems achieve propulsion through the combination of rack and pinion or sprocket and chain. However, the meshing of rack and pinion or sprocket and chain in traditional drive systems is uneven on curved tracks, resulting in high local stress, rapid wear, high noise, frequent maintenance, and high costs. In addition, the machining and installation of racks require extremely high precision, and even slight deviations will affect the operating performance, increase costs, and increase the risk of delays. Summary of the Invention

[0004] In view of the above problems and to overcome at least one deficiency, the present invention proposes a mobile device for performing arts.

[0005] The technical solution adopted in this invention is as follows: A mobile device for performing arts, comprising: Mounting base; The arc-shaped outer track is fixed to the mounting base; An arc-shaped inner track is fixed on the mounting base, and the center line of the inner track coincides with the center line of the outer track. The stage carriage is installed on both the outer and inner tracks, and can move back and forth along the outer and inner tracks. The first limiting wheel assembly has multiple spaced first limiting wheels, which are rotatably mounted on the mounting base. The center of each first limiting wheel is located on a first arc line, and the center line corresponding to the first arc line coincides with the center line of the outer ring track. The first limiting wheel assembly has a first end and a second end. The second limiting wheel assembly has multiple spaced second limiting wheels, which are rotatably mounted on the mounting base. The center of each second limiting wheel is located on a second arc line, and the center line corresponding to the second arc line coincides with the center line of the outer ring track. The second limiting wheel assembly has a first end and a second end. The first end of the second limiting wheel assembly is located on the same side as the first end of the first limiting wheel assembly, and the second end of the second limiting wheel assembly is located on the same side as the second end of the first limiting wheel assembly. The reversing wheel is rotatably mounted on the mounting base, located outside the second end of the first limiting wheel group and the second end of the second limiting wheel group; The traction drive mechanism has a first drum, a second drum, and a drive structure for driving the first drum and the second drum to rotate; The first guide wheel assembly is disposed between the first drum and the first end of the first limit wheel assembly; The first traction rope has one end wound around the first drum, and the other end passes around the first guide wheel group and starts from the first end of the first limit wheel group to cooperate with several first limit wheels, and is finally fixed on the stage vehicle frame. The second guide wheel assembly is disposed between the first ends of the second drum and the second limit wheel assembly; and The second traction rope has one end wound around the second drum, and the other end passes around the second guide wheel group and then starts from the first end of the second limit wheel group to cooperate with all the first limit wheels. After passing around the reversing wheel, it starts from the second end of the first limit wheel group to cooperate with several second limit wheels and is finally fixed on the stage vehicle frame. When the drive structure is working, in the first drum and the second drum, one drum releases the corresponding traction rope, and the other drum retracts the corresponding traction rope.

[0006] This application features two independent traction ropes wound around two drums and precisely guided by corresponding guide wheel sets, attaching to the stage carriage to form a closed loop. Utilizing the flexibility of the traction ropes, this application can effectively adapt to the varying length requirements of curved paths, ensuring smooth and seamless operation. One operational mode of this application's performance mobile device is as follows: when driving the stage carriage towards the second end away from the first limit wheel set, the drive mechanism activates, the first drum retracts the first traction rope, and simultaneously the second drum releases the second traction rope; when driving the stage carriage towards the first end away from the first limit wheel set, the drive mechanism activates, the first drum releases the first traction rope, and simultaneously the second drum retracts the second traction rope.

[0007] The rolling friction between the traction rope and guide wheels, limit wheels, etc. (compared to the sliding friction + impact of gears / chains), results in a more uniform contact stress distribution and eliminates meshing impact, significantly reducing wear rate, multiplying equipment lifespan, and producing extremely low operating noise. In practical applications, maintenance mainly focuses on periodic inspections of the wire rope and bearings, greatly reducing workload.

[0008] In this application, the portion of the first traction rope that engages with the first limiting wheel assembly is located on one side of the first limiting wheel assembly, which is used to make the first traction rope substantially arc-shaped. Similarly, the portion of the second traction rope that engages with the first limiting wheel assembly is located on one side of the first limiting wheel assembly, which is used to make the second traction rope substantially arc-shaped. The portion of the second traction rope that engages with the second limiting wheel assembly is located on one side of the second limiting wheel assembly, which is used to make the second traction rope substantially arc-shaped. This arrangement ensures that the direction of the force exerted by the traction rope on the stage carriage is substantially parallel to the direction of movement of the stage carriage, resulting in better force distribution and smoother operation of the stage carriage.

[0009] In practical applications, the preferred traction rope is a steel wire rope. The "several" mentioned in this application can refer to one or more.

[0010] In practical applications, the drum can adopt a stepless transmission design (such as friction wheel, special winding method combined with servo drive) to realize continuous, stepless speed change of the traction rope, completely eliminating the "step" feeling caused by gear meshing or chain links.

[0011] In practical application, this application also includes a first brake that cooperates with the first drum and a second brake that cooperates with the second drum, which can quickly stop the drum.

[0012] In this application, the preferred traction drive mechanism is located away from the stage carriage frame and does not move with the stage carriage frame. Compared to the traditional power structure being mounted on the stage carriage frame, the stage carriage frame structure can be more compact and lighter, effectively solving the problems of large inertia and space occupation caused by the following motion of traditional large drive mechanisms. In addition, the structure of this application can improve design freedom, providing greater freedom in the industrial and structural design of the stage carriage frame and tracks, making it easier to achieve an aesthetically pleasing and simple overall effect.

[0013] In one embodiment of the present invention, it further includes: Multiple first traveling wheels are installed at intervals on the stage vehicle frame, and the first traveling wheels are in rolling cooperation with the outer ring track; Multiple second traveling wheels are installed at intervals on the stage vehicle frame, and the second traveling wheels roll in cooperation with the inner ring track. In one embodiment of the present invention, both the outer and inner tracks include an I-shaped body, and the lower end of the I-shaped body is fixed to the mounting base. The stage truss has an anti-detachment limiting part for the upper end of the I-shaped main body to be embedded. The anti-detachment limiting part is in clearance fit with the upper end of the I-shaped main body. The first traveling wheel is in rolling fit with the upper end surface of the corresponding I-shaped main body, and the second traveling wheel is in rolling fit with the upper end surface of the corresponding I-shaped main body.

[0014] This compact design utilizes rolling friction via wheels to facilitate the movement of the stage truck. The anti-detachment limiting part and the I-shaped main body work together to limit the direction of movement of the stage truck, allowing it to move back and forth along the extension directions of the outer and inner tracks.

[0015] In one embodiment of the present invention, at least one set of stage guide wheels is provided on each side of the stage truss. Each set of stage guide wheels includes two stage guide wheels respectively provided on the left and right sides of the I-shaped main body. The stage guide wheels are in rolling cooperation with the side wall at the upper end of the I-shaped main body.

[0016] By setting guide wheels on the stage carriage, the movement direction of the stage carriage can be guided, reducing the sliding friction between the anti-detachment limit part and the I-shaped main body, so that the stage carriage can move more reliably and smoothly.

[0017] In one embodiment of the present invention, the trolley guide wheel assembly cooperates with the I-shaped main body of the outer ring track.

[0018] In one embodiment of the present invention, the driving structure includes a first take-up motor assembly for driving a first drum to rotate and a second take-up motor assembly for driving a second drum to rotate.

[0019] In one embodiment of the present invention, a first driven sprocket is fixed on the rotating shaft of the first drum, and a second driven sprocket is fixed on the rotating shaft of the second drum. The driving structure includes: Drive motor assembly; A drive sprocket, fixed to the output shaft of the drive motor assembly, the drive sprocket having a first wheel portion and a second wheel portion; and The first transmission chain is wound between the first wheel portion of the driving sprocket and the first driven sprocket; The second drive chain is wound between the second wheel portion of the driving sprocket and the second driven sprocket.

[0020] The drive structure, consisting of a drive sprocket, a first transmission chain, and a second transmission chain, enables the drive structure to simultaneously drive the first and second drums to rotate via a single drive motor assembly. The entire drive structure is simple and reliable.

[0021] In practical applications, the motor in the drive structure is preferably a servo motor.

[0022] In one embodiment of the present invention, an anti-rollover structure is further included, the anti-rollover structure comprising: The first anti-tilt unit is located on the mounting base and in the area adjacent to the outer track. Multiple first barbed hooks are fixed at intervals on the stage vehicle frame, with the hook portion of the first barbed hook located below the first anti-tilt part and in clearance fit with the first anti-tilt part; The second anti-tilt unit is installed on the mounting base and is located in the area of ​​the inner track. Multiple second hooks are fixed at intervals on the stage vehicle frame, with the hook portion of the second hook located below the second anti-tilt part and in clearance fit with the second anti-tilt part.

[0023] When the stage truck frame is subjected to upward force, the hook mechanism comes into contact with the anti-tipping component, which then applies an opposite force to the hook mechanism, preventing the stage truck frame from tipping over. This anti-tipping structure effectively ensures the safety of the equipment in windy weather (such as typhoons), preventing the stage truck frame from being lifted and causing damage.

[0024] In one embodiment of the present invention, buffer components are also provided at both ends of the stage vehicle frame.

[0025] In practical applications, the buffer assembly can adopt an elastic and resettable structure to buffer the stage carriage when it moves to its limit position, thus protecting the stage carriage.

[0026] In one embodiment of the present invention, a first tension sensor for detecting a first traction rope and a second tension sensor for detecting a second traction rope are also included.

[0027] By incorporating tension sensors, the tension of each traction rope can be monitored in real time. Controlling the rotation speed of the first and second drums allows the tension of the traction ropes to be maintained within a set range, ensuring that both ropes maintain a preset, balanced, optimal tension. This constant tension eliminates the risks of slack (leading to impact) or excessive tightness (increasing wear and energy consumption). Whether starting, accelerating, maintaining a constant speed, decelerating, or stopping, the equipment operates smoothly without any shocks or vibrations. In case of emergency braking, the system coordinates the control of both drums to achieve a smooth, rapid, and safe stop.

[0028] The constant tension system can adapt to track irregularities within a certain range, reducing installation difficulty and cost, which means that the requirements for the processing and installation accuracy of the track (outer and inner tracks) are relatively relaxed.

[0029] In one embodiment of the present invention, the first limiting wheel, the second limiting wheel, and the reversing wheel are all horizontally arranged and each has an annular limiting groove.

[0030] The first traction rope is embedded in the annular limiting groove of the first limiting wheel, and the second traction rope is embedded in the annular limiting grooves of the first limiting wheel, the second limiting wheel, and the reversing wheel.

[0031] In one embodiment of the present invention, it further includes limiting plates disposed on the upper and lower sides of the first limiting wheel, the limiting plates on both sides of the first limiting wheel forming an anti-disengagement space connected to the annular limiting groove of the first limiting wheel.

[0032] In one embodiment of the present invention, it further includes limiting plates disposed on the upper and lower sides of the second limiting wheel, the limiting plates on both sides of the second limiting wheel forming an anti-disengagement space that is connected to the annular limiting groove of the second limiting wheel.

[0033] When the traction rope is not taut, it will not completely detach from the area of ​​the annular limiting groove due to the existence of the anti-detachment space. When the traction rope is taut again, it can quickly move from the anti-detachment space to the annular limiting groove and roll in cooperation with the limiting wheel.

[0034] In one embodiment of the present invention, an anti-detachment rod is further provided on one side of the first limiting wheel, and the anti-detachment rod and the annular limiting groove of the first limiting wheel form a limiting space for the first traction rope or the second traction rope to pass through.

[0035] In one embodiment of the present invention, an anti-detachment rod is further provided on one side of the second limiting wheel, and the annular limiting groove of the anti-detachment rod and the second limiting wheel forms a limiting space for the second traction rope to pass through.

[0036] The traction rope is threaded through the limiting space, and because of the anti-detachment rod, it will not come off the annular limiting groove when the traction rope is not taut.

[0037] In one embodiment of the present invention, the anti-detachment rod is vertically arranged and can rotate about its own axis.

[0038] In one embodiment of the present invention, the mounting base is disposed at the bottom of the water, and the periphery of the mounting base has an upwardly extending portion, forming a mounting cavity. The outer ring track, the inner ring track, the first limiting wheel group, the second limiting wheel group, and the reversing wheel are all located within the mounting cavity.

[0039] The extension section forms an installation cavity, in which the moving parts of the device are located. This reduces the impact of underwater impurities on the moving structure and effectively shortens the maintenance cycle of the device.

[0040] In one embodiment of the present invention, the bottom of the water body has a silt layer, the upper part of the extension is lower than the water surface, the stage vehicle frame has a stage surface, the stage surface is higher than the water surface and higher than the upper surface of the silt layer, and the bottom of the mounting base has a fixing pile extending into the water body.

[0041] Preferably, in order to prevent sludge from entering the installation cavity, the bottom wall of the installation cavity is higher than the upper surface of the sludge layer.

[0042] In one embodiment of the present invention, it further includes a first gravity automatic tensioning device that cooperates with a first traction rope and a second gravity automatic tensioning device that cooperates with a second traction rope.

[0043] The tension of the traction rope is kept stable by setting up an automatic gravity tensioning device.

[0044] The beneficial effects of this invention are as follows: Two independent traction ropes are wound around two drums respectively, and are precisely guided by corresponding guide wheel sets to attach to the stage frame, forming a closed loop. This invention utilizes the flexibility of the traction ropes to adapt very well to the unequal length requirements of curved paths, ensuring smooth and seamless operation. This invention employs a double-wire rope, double-drum closed-loop cyclic friction drive motion. The double wire ropes guide the curved path on the curved track through a drag wheel. A gravity-driven automatic tensioning device maintains stable traction rope tension. Using double wire ropes reduces the diameter of the traction wire ropes and the volume of the drive wheel set while ensuring a certain traction force, reducing the difficulty of use. It also provides double protection, preventing the equipment from failing to return to its original position if one wire rope breaks. The use of a double-drum electric drive ensures that the wire ropes do not slip when the forward and backward drums rotate in opposite directions. Attached Figure Description

[0045] Figure 1 This is a top-down view of a mobile device used for performing arts. Figure 2 This is the main view of a mobile device for performing arts. Figure 3 yes Figure 1 A magnified view of a section at point A in the middle; Figure 4 yes Figure 1 A magnified view of a section at point B in the middle; Figure 5 yes Figure 1 A magnified view of a section at point C; Figure 6 yes Figure 2 A magnified view of a section at point D; Figure 7 This is a schematic diagram of the traction drive mechanism; Figure 8 This is a cross-sectional view of the outer track. Figure 9 It is a schematic diagram of the structure including the mounting base, outer track, inner track, stage truss, etc. Figure 10 yes Figure 9 A magnified view of a section at point E in the middle; Figure 11 yes Figure 9 A magnified view of a section at point F in the middle; Figure 12 yes Figure 9 A magnified view of a section at point G in the middle; Figure 13 This is a schematic diagram of two gravity-driven automatic tensioning devices.

[0046] The labels for the attached figures are as follows: 1. Mounting base; 11. Extension; 12. Mounting cavity; 2a. Outer ring track; 2b. Inner ring track; 21. I-shaped main body; 3. Stage truss; 31. First traveling wheel; 32. Second traveling wheel; 33. Anti-detachment limiting part; 34. Stage guide wheel; 35. Buffer assembly; 41. First limiting wheel; 42. First arc-shaped line; 43. Second limiting wheel; 44. Second arc-shaped line; 45. Reversing wheel; 401. Annular limiting groove; 5. Traction drive mechanism; 51. First drum; 52. Second drum; 53. Drive structure; 531. First driven sprocket; 532. Second driven sprocket; 533. Drive motor assembly ; 534, drive sprocket; 535, first transmission chain; 536, second transmission chain; 61, first guide wheel assembly; 62, first traction rope; 63, second guide wheel assembly; 64, second traction rope; 71, first anti-tilt part; 72, first barb; 73, second anti-tilt part; 74, second barb; 81, limiting plate; 82, anti-detachment space; 83, anti-detachment rod; 84, limiting space; 91, stage surface; 92, water surface; 93, upper surface of silt layer; 94, bottom of water; 95, fixed pile; 10a, first gravity automatic tensioning device; 10b, second gravity automatic tensioning device; 101, slide rail; 102, counterweight. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0048] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] The present invention will now be described in detail with reference to the accompanying drawings.

[0051] like Figures 1-5 As shown, a mobile device for performing arts includes: Mounting base 1; The arc-shaped outer ring track 2a is fixed on the mounting base 1; The arc-shaped inner track 2b is fixed on the mounting base 1, and the center line of the inner track 2b coincides with the center line of the outer track 2a. The stage carriage 3 is installed on both the outer ring track 2a and the inner ring track 2b, and can move back and forth along the outer ring track 2a and the inner ring track 2b. The first limiting wheel group has multiple first limiting wheels 41 spaced apart. The first limiting wheels 41 are rotatably mounted on the mounting base 1. The center of each first limiting wheel 41 is located on the first arc line 42. The center line corresponding to the first arc line 42 coincides with the center line of the outer ring track 2a. The first limiting wheel group has a first end and a second end. The second limiting wheel assembly has multiple spaced second limiting wheels 43, which are rotatably mounted on the mounting base 1. The center of each second limiting wheel 43 is located on the second arc line 44, and the center line of the second arc line 44 coincides with the center line of the outer ring track 2a. The second limiting wheel assembly has a first end and a second end. The first end of the second limiting wheel assembly is on the same side as the first end of the first limiting wheel assembly, and the second end of the second limiting wheel assembly is on the same side as the second end of the first limiting wheel assembly. The reversing wheel 45 is rotatably mounted on the mounting base 1, located on the outer side of the second end of the first limit wheel group and the second end of the second limit wheel group; The traction drive mechanism 5 has a first drum 51, a second drum 52, and a drive structure 53 for driving the first drum 51 and the second drum 52 to rotate. The first guide wheel assembly 61 is disposed between the first drum 51 and the first end of the first limit wheel assembly; The first traction rope 62 has one end wound around the first drum 51, and the other end passes around the first guide wheel group 61 and then starts from the first end of the first limit wheel group to cooperate with several first limit wheels 41, and finally is fixed on the stage vehicle frame 3. The second guide wheel assembly 63 is disposed between the first end of the second drum 52 and the second limit wheel assembly; and The second traction rope 64 has one end wound around the second drum 52, and the other end passes over the second guide wheel group 63 and then starts from the first end of the second limit wheel group to cooperate with all the first limit wheels 41. After passing over the reversing wheel 45, it starts from the second end of the first limit wheel group to cooperate with several second limit wheels 43, and finally is fixed on the stage truss 3. When the drive structure 53 is working, in the first drum 51 and the second drum 52, one drum is releasing the corresponding traction rope, and the other drum is winding up the corresponding traction rope.

[0052] This application features two independent traction ropes wound around two drums and precisely guided by corresponding guide wheel sets, attaching to the stage carriage 3 to form a closed loop. Utilizing the flexibility of the traction ropes, this application can effectively adapt to the varying length requirements of curved paths, ensuring smooth and seamless operation. One operational mode of this application's performance mobile device is as follows: when driving the stage carriage 3 towards the second end away from the first limit wheel set, the drive structure 53 operates, the first drum 51 retracts the first traction rope 62, and simultaneously the second drum 52 releases the second traction rope 64; when driving the stage carriage 3 towards the first end away from the first limit wheel set, the drive structure 53 operates, the first drum 51 releases the first traction rope 62, and simultaneously the second drum 52 retracts the second traction rope 64.

[0053] The rolling friction between the traction rope and guide wheels, limit wheels, etc. (compared to the sliding friction + impact of gears / chains), results in a more uniform contact stress distribution and eliminates meshing impact, significantly reducing wear rate, multiplying equipment lifespan, and producing extremely low operating noise. In practical applications, maintenance mainly focuses on periodic inspections of the wire rope and bearings, greatly reducing workload.

[0054] In this application, the portion of the first traction rope 62 that engages with the first limiting wheel assembly is located on one side of the first limiting wheel assembly, which is used to make the first traction rope 62 substantially arc-shaped; the portion of the second traction rope 64 that engages with the first limiting wheel assembly is located on one side of the first limiting wheel assembly, which is used to make the second traction rope 64 substantially arc-shaped, and the portion of the second traction rope 64 that engages with the second limiting wheel assembly is located on one side of the second limiting wheel assembly, which is used to make the second traction rope 64 substantially arc-shaped. This arrangement ensures that the direction of the force exerted by the traction rope on the stage carriage 3 is substantially parallel to the direction of movement of the stage carriage 3, resulting in better force distribution and smoother operation of the stage carriage 3.

[0055] In practical applications, the preferred traction rope is a steel wire rope. The "several" mentioned in this application can refer to one or more.

[0056] In practical applications, the drum can adopt a stepless transmission design (such as friction wheel, special winding method combined with servo drive) to realize continuous, stepless speed change of the traction rope, completely eliminating the "step" feeling caused by gear meshing or chain links.

[0057] In practical application, this application also includes a first brake that cooperates with the first drum 51 and a second brake that cooperates with the second drum 52, which can quickly stop the drum.

[0058] In this application, the preferred traction drive mechanism 5 is located away from the stage carriage 3 and does not move with the stage carriage 3. Compared to the traditional power structure being mounted on the stage carriage 3, the stage carriage 3 can have a more compact structure and lighter weight, effectively solving the problems of large inertia and space occupation caused by the following motion of traditional large drive mechanisms. In addition, the structure of this application can improve design freedom, providing greater freedom in the industrial and structural design of the stage carriage 3 and the track, making it easier to achieve an aesthetically pleasing and simple overall effect.

[0059] like Figure 4 As shown, in this embodiment, it also includes: Multiple first traveling wheels 31 are installed at intervals on the stage carriage 3, and the first traveling wheels 31 roll in cooperation with the outer ring track 2a; Multiple second traveling wheels 32 are installed at intervals on the stage carriage 3, and the second traveling wheels 32 roll in cooperation with the inner ring track 2b. like Figure 8 , 9 As shown in Figures 10 and 11, in this embodiment, both the outer ring track 2a and the inner ring track 2b include an I-shaped body 21, and the lower end of the I-shaped body 21 is fixed to the mounting base 1. The stage truss 3 has an anti-detachment limiting part 33 for the upper end of the I-shaped main body 21 to be inserted. The anti-detachment limiting part 33 is in clearance fit with the upper end of the I-shaped main body 21. The first traveling wheel 31 is in rolling fit with the upper end surface of the corresponding I-shaped main body 21, and the second traveling wheel 32 is in rolling fit with the upper end surface of the corresponding I-shaped main body 21.

[0060] This compact structure allows for rolling friction via the wheels, facilitating the movement of the stage carriage 3. The anti-detachment limiting part 33 and the I-shaped main body 21 work together to limit the direction of movement of the stage carriage 3, enabling it to reciprocate along the extension directions of the outer track 2a and the inner track 2b.

[0061] like Figure 4 and 10 As shown, in this embodiment, at least one set of stage guide wheels is provided on each side of the stage vehicle frame 3. Each set of stage guide wheels includes two stage guide wheels 34 respectively provided on the left and right sides of the I-shaped main body 21. The stage guide wheels 34 roll in cooperation with the side wall at the upper end of the I-shaped main body 21.

[0062] By setting the stage carriage guide wheel 34, the movement direction of the stage carriage 3 can be guided, reducing the sliding friction between the anti-detachment limit part 33 and the I-shaped main body 21, so that the stage carriage 3 can move more reliably and smoothly.

[0063] In this embodiment, the trolley guide wheel assembly is fitted with the I-shaped main body 21 of the outer ring track 2a.

[0064] like Figure 4 As shown, in this embodiment, the drive structure 53 includes a first take-up motor assembly for driving the first drum 51 to rotate and a second take-up motor assembly for driving the second drum 52 to rotate.

[0065] like Figure 7 As shown, in this embodiment, a first driven sprocket 531 is fixed on the rotating shaft of the first drum 51, and a second driven sprocket 532 is fixed on the rotating shaft of the second drum 52. The drive structure 53 includes: Drive motor assembly 533; The drive sprocket 534 is fixed to the output shaft of the drive motor assembly 533, and the drive sprocket 534 has a first wheel portion and a second wheel portion; and The first transmission chain 535 is wound between the first wheel portion of the driving sprocket 534 and the first driven sprocket 531; The second drive chain 536 is wound between the second wheel portion of the driving sprocket 534 and the second driven sprocket 532.

[0066] The drive structure 53 can drive the first drum 51 and the second drum 52 to rotate simultaneously through the drive sprocket 534, the first transmission chain 535 and the second transmission chain 536. The entire drive structure 53 is simple and reliable.

[0067] In practical applications, the motor in the drive structure 53 is preferably a servo motor.

[0068] like Figure 6 and 9 As shown, in this embodiment, an anti-rollover structure is also included, which includes: The first anti-tilting part 71 is installed on the mounting base 1 and is located in the area of ​​the outer ring track 2a; Multiple first barbed parts 72 are fixed at intervals on the stage vehicle frame 3. The hook part of the first barbed part 72 is located below the first anti-tilt part 71 and is in clearance fit with the first anti-tilt part 71. The second anti-tilting part 73 is installed on the mounting base 1 and is located in the area adjacent to the inner ring track 2b; Multiple second hook parts 74 are fixed at intervals on the stage frame 3. The hook part of the second hook part 74 is located below the second anti-tilt part 73 and is in clearance fit with the second anti-tilt part 73.

[0069] When the stage carriage 3 is subjected to force and moves upward, the hook will contact the anti-tipping part, thereby the anti-tipping part exerts an opposite force on the hook, preventing the stage carriage 3 from tipping over. The anti-tipping structure can effectively ensure the safety of the device in windy weather (such as typhoons) and prevent the stage carriage 3 from being lifted up and damaged.

[0070] like Figure 4 As shown, in this embodiment, buffer components 35 are also provided at both ends of the stage vehicle frame 3.

[0071] In practical applications, the buffer component 35 can adopt an elastic and resettable structure to buffer the stage carriage 3 when it moves to its limit position, thus protecting the stage carriage 3.

[0072] In this embodiment, a first tension sensor for detecting the first traction rope 62 and a second tension sensor for detecting the second traction rope 64 are also included.

[0073] By incorporating tension sensors, the tension of each traction rope can be monitored in real time. Controlling the rotation speed of the first drum 51 and the second drum 52 allows the tension of the traction ropes to be maintained within a set range, ensuring that both traction ropes maintain a preset, balanced, optimal tension. This constant tension eliminates the risks of slack (leading to impact) or excessive tightness (increasing wear and energy consumption). Whether starting, accelerating, maintaining a constant speed, decelerating, or stopping, the equipment operates smoothly without any shocks or vibrations. In case of emergency braking, the system coordinates the control of both drums to achieve a smooth, rapid, and safe stop.

[0074] The constant tension system can adapt to track irregularities within a certain range, reducing installation difficulty and cost. In other words, the requirements for the processing and installation accuracy of the tracks (outer track 2a and inner track 2b) are relatively relaxed.

[0075] like Figure 12 As shown, in this embodiment, the first limiting wheel 41, the second limiting wheel 43, and the reversing wheel 45 are all horizontally arranged and each has an annular limiting groove 401.

[0076] The first traction rope 62 is embedded in the annular limiting groove 401 of the first limiting wheel 41, and the second traction rope 64 is embedded in the annular limiting groove 401 of the first limiting wheel 41, the second limiting wheel 43 and the reversing wheel 45.

[0077] like Figure 12 As shown, in this embodiment, it also includes limiting plates 81 disposed on the upper and lower sides of the first limiting wheel 41. The limiting plates 81 on both sides of the first limiting wheel 41 form an anti-detachment space 82 that communicates with the annular limiting groove 401 of the first limiting wheel 41. In this embodiment, it also includes an anti-detachment rod 83 disposed on one side of the second limiting wheel 43. The anti-detachment rod 83 and the annular limiting groove 401 of the second limiting wheel 43 form a limiting space 84 through which the second traction rope 64 passes.

[0078] When the traction rope is not taut, it will not completely detach from the area of ​​the annular limiting groove 401 due to the presence of the anti-detachment space 82. When the traction rope is taut again, it can quickly move from the anti-detachment space 82 to the annular limiting groove 401 and roll in cooperation with the limiting wheel. The traction rope is threaded through the limiting space 84, and due to the presence of the anti-detachment rod 83, it will not detach from the annular limiting groove 401 when the traction rope is not taut.

[0079] In practical applications, it is preferable that the anti-detachment rod 83 is vertically set and can rotate around its own axis (which can reduce friction).

[0080] In other embodiments, limiting plates 81 can be provided on the upper and lower sides of the second limiting wheel 43 to form an anti-detachment space 82.

[0081] In other embodiments, an anti-detachment rod 83 may be provided on one side of the first limiting wheel 41 to form a limiting space 84.

[0082] like Figure 9 In this embodiment, the mounting base 1 is set at the bottom of the water 94. The periphery of the mounting base 1 has an upward extension 11. The mounting base 1 forms a mounting cavity 12. The outer ring track 2a, the inner ring track 2b, the first limiting wheel group, the second limiting wheel group, and the reversing wheel 45 are all located in the mounting cavity 12.

[0083] The extension 11 forms a mounting cavity 12, and the movable part of the device is located in the mounting cavity 12, which can reduce the impact of impurities such as those at the bottom of the water on the moving structure and effectively reduce the maintenance cycle of the device.

[0084] like Figure 9 As shown, in this embodiment, the bottom of the water bottom 94 has a silt layer, the upper part of the extension 11 is lower than the water surface 92, the stage frame 3 has a stage surface 91, the stage surface 91 is higher than the water surface 92 and higher than the upper surface 93 of the silt layer, and the bottom of the mounting base 1 has a fixing pile 95 extending into the water bottom 94.

[0085] like Figure 9 As shown, preferably, in order to prevent silt from entering the mounting cavity 12, the bottom wall of the mounting cavity 12 is higher than the upper surface 93 of the silt layer.

[0086] like Figure 13As shown, it also includes a first gravity automatic tensioning device that cooperates with the first traction rope 62 and a second gravity automatic tensioning device that cooperates with the second traction rope 64. In practical application, the first and second gravity automatic tensioning devices can be configured as follows: each includes a slide rail and a counterweight block that cooperates with the slide rail and can move up and down. One guide wheel 600 in the first guide wheel assembly 61 is rotatably mounted on the counterweight block of the first gravity automatic tensioning device, and the first traction rope 62 will pass around the guide wheel 600 mounted on the counterweight block of the first gravity automatic tensioning device. Similarly, one guide wheel 600 in the second guide wheel assembly is rotatably mounted on the counterweight block of the second gravity automatic tensioning device, and the second traction rope 64 will pass around the guide wheel 600 mounted on the counterweight block of the second gravity automatic tensioning device. This application maintains stable tension of the traction rope by setting up gravity automatic tensioning devices.

[0087] This embodiment employs a closed-loop cyclic friction drive motion using two steel wire ropes and two drums. The two steel wires guide the curve along an arc-shaped track via a drag wheel. A gravity-based automatic tensioning device maintains stable tension in the traction ropes. The use of two steel wire ropes reduces the diameter of the traction steel wire ropes and the volume of the drive wheel assembly while ensuring a certain traction force, thus reducing the difficulty of use. It also provides dual protection, preventing the equipment from failing to return to its original position if one steel rope breaks. The use of a dual-drum electric drive ensures that the steel wire ropes do not slip when the forward and backward drums rotate in opposite directions.

[0088] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A mobile device for performing arts, characterized in that, include: Mounting base; The arc-shaped outer track is fixed to the mounting base; An arc-shaped inner track is fixed on the mounting base, and the center line of the inner track coincides with the center line of the outer track. Both the outer track and the inner track include an I-shaped main body. The stage carriage, with its rolling wheels engaging with the mounting base, is simultaneously mounted on both the outer and inner ring tracks, enabling it to reciprocate along these tracks. The stage carriage has an anti-detachment limiting part for the upper end of the I-shaped main body to be embedded into, with a clearance fit between the anti-detachment limiting part and the upper end of the I-shaped main body. At least one set of stage guide wheels is provided on each side of the stage carriage, each set including two stage guide wheels respectively located on the left and right sides of the I-shaped main body, with the stage guide wheels engaging with the side wall of the upper end of the I-shaped main body. The first limiting wheel assembly has multiple spaced first limiting wheels, which are rotatably mounted on the mounting base. The center of each first limiting wheel is located on a first arc line, and the center line corresponding to the first arc line coincides with the center line of the outer ring track. The first limiting wheel assembly has a first end and a second end. The second limiting wheel assembly has multiple spaced second limiting wheels, which are rotatably mounted on the mounting base. The center of each second limiting wheel is located on a second arc line, and the center line corresponding to the second arc line coincides with the center line of the outer ring track. The second limiting wheel assembly has a first end and a second end. The first end of the second limiting wheel assembly is located on the same side as the first end of the first limiting wheel assembly, and the second end of the second limiting wheel assembly is located on the same side as the second end of the first limiting wheel assembly. The reversing wheel is rotatably mounted on the mounting base, located outside the second end of the first limiting wheel group and the second end of the second limiting wheel group; The traction drive mechanism has a first drum, a second drum, and a drive structure for driving the first drum and the second drum to rotate; The first guide wheel assembly is disposed between the first drum and the first end of the first limit wheel assembly; The first traction rope has one end wound around the first drum, and the other end passes around the first guide wheel group and starts from the first end of the first limit wheel group to cooperate with several first limit wheels, and is finally fixed on the stage vehicle frame. The second guide wheel assembly is disposed between the first ends of the second drum and the second limit wheel assembly; and The second traction rope has one end wound around the second drum, and the other end passes around the second guide wheel group and then starts from the first end of the second limit wheel group to cooperate with all the first limit wheels. After passing around the reversing wheel, it starts from the second end of the first limit wheel group to cooperate with several second limit wheels and is finally fixed on the stage vehicle frame. When the drive structure is working, in the first drum and the second drum, one drum releases the corresponding traction rope, and the other drum retracts the corresponding traction rope.

2. The performing arts mobile device as described in claim 1, characterized in that, The traveling wheels include first traveling wheels and second traveling wheels. There are multiple first traveling wheels, which are installed at intervals on the stage carriage frame. The first traveling wheels roll in cooperation with the outer ring track. There are also multiple second traveling wheels, which are installed at intervals on the stage carriage frame. The second traveling wheels roll in cooperation with the inner ring track. The lower end of the I-shaped main body is fixed to the mounting base; the first traveling wheel rolls in cooperation with the upper end surface of the corresponding I-shaped main body, and the second traveling wheel rolls in cooperation with the upper end surface of the corresponding I-shaped main body.

3. The performance mobile device as described in claim 1, characterized in that, The drive structure includes a first take-up motor assembly for driving the first drum to rotate and a second take-up motor assembly for driving the second drum to rotate.

4. The performing arts mobile device as described in claim 1, characterized in that, A first driven sprocket is fixed on the rotating shaft of the first drum, and a second driven sprocket is fixed on the rotating shaft of the second drum. The drive structure includes: Drive motor assembly; A drive sprocket, fixed to the output shaft of the drive motor assembly, the drive sprocket having a first wheel portion and a second wheel portion; and The first transmission chain is wound between the first wheel portion of the driving sprocket and the first driven sprocket; The second drive chain is wound between the second wheel portion of the driving sprocket and the second driven sprocket.

5. The performing arts mobile device as described in claim 1, characterized in that, It also includes an anti-rollover structure, which comprises: The first anti-tilt unit is located on the mounting base and in the area adjacent to the outer track. Multiple first barbed hooks are fixed at intervals on the stage vehicle frame, with the hook portion of the first barbed hook located below the first anti-tilt part and in clearance fit with the first anti-tilt part; The second anti-tilt unit is installed on the mounting base and is located in the area of ​​the inner track. Multiple second hooks are fixed at intervals on the stage vehicle frame, with the hook portion of the second hook located below the second anti-tilt part and in clearance fit with the second anti-tilt part.

6. The performance mobile device as described in claim 1, characterized in that, The stage truss is also equipped with buffer components at both ends.

7. The performing arts mobile device as described in claim 1, characterized in that, It also includes a first tension sensor for detecting the first traction rope and a second tension sensor for detecting the second traction rope.

8. The performance mobile device as described in claim 1, characterized in that, The first limiting wheel, the second limiting wheel, and the reversing wheel are all horizontally arranged and each has an annular limiting groove; the first traction rope is embedded in the annular limiting groove of the first limiting wheel, and the second traction rope is embedded in the annular limiting grooves of the first limiting wheel, the second limiting wheel, and the reversing wheel.

9. The performance mobile device as described in claim 8, characterized in that, It also includes limiting plates disposed on the upper and lower sides of the first limiting wheel, the limiting plates on both sides of the first limiting wheel forming an anti-detachment space connected to the annular limiting groove of the first limiting wheel; or, it also includes an anti-detachment rod disposed on one side of the first limiting wheel, the anti-detachment rod and the annular limiting groove of the first limiting wheel forming a limiting space for the first traction rope or the second traction rope to pass through. It also includes limiting plates set on the upper and lower sides of the second limiting wheel, the limiting plates on both sides of the second limiting wheel forming an anti-detachment space that is connected to the annular limiting groove of the second limiting wheel; or, it also includes an anti-detachment rod set on one side of the second limiting wheel, the anti-detachment rod and the annular limiting groove of the second limiting wheel forming a limiting space for the second traction rope to pass through.

10. The performance mobile device as described in claim 1, characterized in that, The mounting base is set at the bottom of the water, and the periphery of the mounting base has an upward extension. The mounting base forms a mounting cavity, and the outer ring track, inner ring track, first limit wheel group, second limit wheel group and reversing wheel are all located in the mounting cavity. The bottom of the water body has a layer of silt, the upper part of the extension is below the water surface, the stage vehicle frame has a stage surface, the stage surface is above the water surface and above the upper surface of the silt layer, and the bottom of the mounting base has fixed piles that extend into the water.

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