Stage lifting device

Abstract

The utility model relates to a stage lifting device, rotates the bottom disc top and is equipped with a plurality of threaded rods along the circumferential direction, and the table top is equipped with a threaded sleeve in cooperation, the bottom end of threaded rod is equipped with driven wheel no.

Description

Technical Field

[0001] This utility model relates to the field of stage equipment technology, specifically to a stage lifting device. Background Technology

[0002] As an important component of modern stage machinery, the core function of a lifting stage is to achieve dynamic transformation of stage space through changes in height. It is mainly used for switching performance scenes, staging actors, and creating visual effects.

[0003] In existing technologies, the lifting mechanism of a lifting stage is typically a scissor-type lifting mechanism driven by a hydraulic rod or lead screw. For example, utility model patent CN204850579U discloses a liftable and rotating stage. This stage includes a lower base, an upper base, and a platform. The upper base is positioned above the lower base via a drive rotation mechanism and a rotation support mechanism. The platform is positioned above the upper base via at least one scissor mechanism, which is connected to a reduction motor via a lead screw conversion mechanism. One side of the scissor mechanism is hinged to the upper base and platform, while the other side slides on them. The opening and closing of the scissor mechanism drives the platform to move up and down. This design has the following drawbacks: First, during the lifting process of the platform, the movement of the free side of the scissor mechanism causes a shift in its center of gravity, resulting in uneven stress on the platform. When an actor stands on the unsupported side of the platform, the stage may tilt, leading to a low safety factor. Second, the rotating mechanism and the lifting mechanism are both separate structures with low integration, making them inconvenient to control and resulting in a large stage size. Utility Model Content

[0004] The purpose of this invention is to overcome the technical defects of existing lifting stages, such as uneven force distribution, low safety factor, low stage integration, inconvenient control, and large stage volume, and to provide a stage lifting device with stable support and high integration.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: A stage lifting device includes a base, a rotating chassis, and a platform. The rotating chassis is sleeved on the top of the base. Multiple threaded rods are evenly arranged along the circumferential direction on the top of the rotating chassis. A threaded sleeve is fixedly provided at the bottom of the platform. The threaded sleeve and the threaded rods cooperate with each other. The threaded rods are rotatably connected to the rotating chassis, and a driven wheel is fixedly provided at their bottom ends. A driving wheel is rotatably provided at the center of the rotating chassis. Multiple transmission mechanisms are also provided on the base to connect the driven wheel and the driving wheel. A bevel gear disk is provided inside the rotating chassis. A driving wheel is located above the center of the base. Multiple transmission mechanisms are also provided on the base to connect the bevel gear disk and the driving wheel. A drive motor is provided inside the base. Both the driving wheel and the driving wheel are rotatably mounted on the output shaft of the drive motor. A locking ring is fixedly provided on the side of the driving wheel that is close to each other. A switching device is provided between the two locking rings. The switching device is slidably mounted on the output shaft of the drive motor and can engage with one of the locking rings.

[0006] Furthermore, both the driving wheel and the driven wheel are worm gears. The transmission mechanism includes a rotating rod and two worms fixedly disposed at both ends of the rotating rod. The driven wheel meshes with the driven wheel and the two meet the self-locking condition. The driven wheel meshes with the driving wheel and the two do not meet the self-locking condition.

[0007] Furthermore, the second driving wheel is a bevel gear, and the second transmission mechanism includes a second rotating rod and two transmission bevel gears fixed at both ends of the second rotating rod. The two transmission bevel gears mesh with the second driving wheel and the bevel gear disk, respectively.

[0008] Furthermore, the switching device includes a sliding sleeve, a support ring, and an electric push rod. The sliding sleeve has a limiting ring groove in the middle, the support ring is rotatably disposed in the limiting ring groove, and a support leg is fixedly disposed on the outside of the support ring. The top end of the electric push rod is fixedly connected to the bottom end of the support leg, and the bottom end is fixedly connected to the base.

[0009] Furthermore, the sliding sleeve is connected to the output shaft of the drive motor by a key.

[0010] Furthermore, the upper and lower ends of the sliding sleeve and the end of the snap ring near the sliding sleeve are provided with snap protrusions and snap grooves, and the snap ring and the sliding sleeve are engaged through the snap protrusions and snap grooves.

[0011] The beneficial effects of this utility model are as follows: This utility model achieves the lifting and lowering of the tabletop through the cooperation of multiple sets of threaded sleeves and threaded rods. The threaded sleeves and threaded rods are evenly distributed between the tabletop and the rotating base, so that the force is evenly distributed, avoiding the tabletop from tilting during use and improving safety. The first drive wheel for driving the tabletop to rise and the second drive wheel for driving the tabletop to rotate are integrated on the output shaft of a drive motor, and the lifting and rotating functions are switched by a switching device. This results in high integration, convenient control, and small size. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the stage lifting device of this utility model; Figure 2 This is a schematic diagram of the internal structure of the stage lifting device of this utility model; Figure 3 yes Figure 2 Enlarged version of section A; Figure 4 This is a schematic diagram of the sliding sleeve.

[0013] 1. Base; 2. Rotating chassis; 3. Platform; 4. Threaded rod; 5. Threaded sleeve; 6. Driven wheel one; 7. Driving wheel one; 8. Transmission mechanism one; 9. Bevel gear disc; 10. Driving wheel two; 11. Transmission mechanism two; 12. Drive motor; 13. Snap-fit ​​ring; 14. Switching device; 15. Rotating rod one; 16. Worm gear one; 17. Worm gear two; 18. Rotating rod two; 19. Transmission bevel gear; 20. Sliding sleeve; 21. Support ring; 22. Electric push rod; 23. Limiting ring groove; 24. Support leg; 25. Snap-fit ​​protrusion; 26. Snap-fit ​​groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0015] Embodiments of this utility model: such as Figure 1-3As shown, a stage lifting device includes a base 1, a rotating base 2, and a platform 3. The rotating base 2 is sleeved on the top of the base 1. Multiple threaded rods 4 are evenly arranged along the circumferential direction on the top of the rotating base 2. A threaded sleeve 5 is fixedly provided at the bottom of the platform 3, and the threaded sleeve 5 cooperates with the threaded rods 4. The threaded rods 4 are rotatably connected to the rotating base 2, and a driven wheel 6 is fixedly provided at their bottom ends. A driving wheel 7 is rotatably provided at the center of the rotating base 2. The base 1 also has multiple transmission mechanisms 8 for connecting the driven wheel 6 and the driving wheel 7. A cone is provided inside the rotating base 2. The base 1 has a gear disk 9 and a drive wheel 10 located above the center of the base 1. The base 1 also has multiple transmission mechanisms 11 for connecting the bevel gear disk 9 and the drive wheel 10. The base 1 has a drive motor 12 inside. The drive wheel 10 and the drive wheel 7 are both rotatably mounted on the output shaft of the drive motor 12. The drive wheel 10 and the drive wheel 7 are both fixed with a snap ring 13 on the side of each other. A switching device 14 is provided between the two snap rings. The switching device 14 is slidably mounted on the output shaft of the drive motor 12 and can engage with one of the snap rings 13.

[0016] With the above structure, the switching device 14 can engage with one of the locking rings 13 to switch between the tabletop rotation function and the tabletop lifting function. When the switching device 14 engages with the locking ring 13 at the bottom of the drive wheel 7, the power of the drive motor 12 can be transmitted to the drive wheel 7, which drives the driven wheel 6 to rotate through the transmission mechanism 8, thereby causing the threaded rod 4 to rotate. With the threaded sleeve 5 cooperating with the threaded rod 4, the tabletop 3 can be lifted. When the locking ring 13 at the top of the drive wheel 10 engages, the power of the drive motor 12 can be transmitted to the drive wheel 10, which drives the bevel gear disk 9 to rotate through the transmission mechanism 11, thereby causing the rotating chassis 2 and the tabletop 3 to rotate.

[0017] like Figure 1 , 2 As shown, both the driving wheel 7 and the driven wheel 6 are worm gears. The transmission mechanism 8 includes a rotating rod 15 and two worms 16 and 17 fixedly disposed at both ends of the rotating rod 15. The worm 16 meshes with the driven wheel 6 and the two meet the self-locking condition. The worm 17 meshes with the driving wheel 7 and the two do not meet the self-locking condition.

[0018] With the above structure, the worm gear 16 and the driven wheel 6 meet the self-locking condition, so that the table 3 can be self-locked after being raised and lowered, and the table 3 will not be lowered due to force; the worm gear 17 and the driving wheel 7 do not meet the self-locking condition, so that the worm wheel can drive the worm gear 17 to rotate as the driving element.

[0019] like Figure 2 , 3As shown, the second driving wheel 10 is a bevel gear, and the second transmission mechanism 11 includes a second rotating rod 18 and two transmission bevel gears 19 fixed at both ends of the second rotating rod 18. The two transmission bevel gears 19 mesh with the second driving wheel 10 and the bevel gear disk 9, respectively.

[0020] Through the above structure, the bevel gears cooperate with each other and with the bevel gear disk to realize the rotation of the rotating chassis, and thus realize the rotation of the platform 3.

[0021] like Figure 2 , 3 As shown in Figure 4, the switching device 14 includes a sliding sleeve 20, a support ring 21, and an electric push rod 22. The sliding sleeve 20 has a limiting ring groove 23 in the middle. The support ring 21 is rotatably disposed in the limiting ring groove 23. A support leg 24 is fixedly disposed on the outside of the support ring 21. The top end of the electric push rod 22 is fixedly connected to the bottom end of the support leg 24, and the bottom end is fixedly connected to the base 1.

[0022] With the above structure, the electric push rod 22 drives the support ring 21 to move up and down, which in turn drives the sliding sleeve 20 to move up and down, and then engages with the locking ring 13.

[0023] The sliding sleeve 20 is connected to the output shaft of the drive motor 12 by a key.

[0024] With the above structure, the sliding sleeve 20 can move up and down along the output shaft of the drive motor 12, and rotate with the output shaft of the drive motor 12.

[0025] like Figure 2 , 3 As shown, the upper and lower ends of the sliding sleeve 20 and the end of the snap ring 13 near the sliding sleeve 20 are provided with snap protrusions 25 and snap grooves 26. The snap ring 13 and the sliding sleeve 20 are engaged through the snap protrusions 25 and snap grooves 26.

[0026] The above structure allows the snap ring 13 to engage with the end of the sliding sleeve 20, thereby causing the snap ring 13 to rotate.

[0027] In practical use, the electric push rod 22 is controlled to extend and retract, thereby controlling the sliding sleeve 20 to engage with the upper or lower locking ring 13, thus transmitting the power from the output shaft of the drive motor 12 to the drive wheel 7 or drive wheel 10 to achieve the lifting or rotation of the table.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stage lifting device, comprising a base (1), a rotating chassis (2), and a platform (3), characterized in that: The rotating base (2) is sleeved on the top of the base (1). The top of the rotating base (2) is evenly provided with multiple threaded rods (4) along the circumferential direction. The bottom of the platform (3) is fixedly provided with a threaded sleeve (5). The threaded sleeve (5) and the threaded rods (4) cooperate with each other. The threaded rods (4) are rotatably connected to the rotating base (2), and a driven wheel (6) is fixedly provided at its bottom end. A driving wheel (7) is rotatably provided at the center of the rotating base (2). The base (1) is also provided with multiple transmission mechanisms (8) for connecting the driven wheel (6) and the driving wheel (7). The rotating base (2) is provided with a bevel gear disk (9) inside. The center of the base (1) is located at... The upper part is provided with a second drive wheel (10), and the base (1) is also provided with a plurality of transmission mechanisms (11) for connecting the bevel gear disk (9) and the second drive wheel (10); the base (1) is provided with a drive motor (12), the second drive wheel (10) and the first drive wheel (7) are rotatably mounted on the output shaft of the drive motor (12), and the second drive wheel (10) and the first drive wheel (7) are fixedly provided with a snap ring (13) on the side of the two drive wheels (10) and the first drive wheel (7) that are close to each other. A switching device (14) is provided between the two snap rings. The switching device (14) is slidably mounted on the output shaft of the drive motor (12) and can be engaged with one of the snap rings (13).

2. The stage lifting device according to claim 1, characterized in that: Both the driving wheel 1 (7) and the driven wheel 1 (6) are worm gears. The transmission mechanism 1 (8) includes a rotating rod 1 (15) and worm 1 (16) and worm 2 (17) fixedly disposed at both ends of the rotating rod 1 (15). Worm 1 (16) meshes with driven wheel 1 (6) and the two meet the self-locking condition. Worm 2 (17) meshes with driving wheel 1 (7) and the two do not meet the self-locking condition.

3. A stage lifting device according to claim 1, characterized in that: The second drive wheel (10) is a bevel gear, and the second transmission mechanism (11) includes a second rotating rod (18) and two transmission bevel gears (19) fixed at both ends of the second rotating rod (18). The two transmission bevel gears (19) mesh with the second drive wheel (10) and the bevel gear disk (9) respectively.

4. A stage lifting device according to claim 1, characterized in that: The switching device (14) includes a sliding sleeve (20), a support ring (21) and an electric push rod (22). The sliding sleeve (20) has a limiting ring groove (23) in the middle. The support ring (21) is rotatably disposed in the limiting ring groove (23). A support leg (24) is fixedly disposed on the outside of the support ring (21). The top end of the electric push rod (22) is fixedly connected to the bottom end of the support leg (24), and the bottom end is fixedly connected to the base (1).

5. A stage lifting device according to claim 4, characterized in that: The sliding sleeve (20) is connected to the output shaft of the drive motor (12) by a key.

6. A stage lifting device according to claim 4, characterized in that: The upper and lower ends of the sliding sleeve (20) and the end of the snap ring (13) near the sliding sleeve (20) are provided with snap protrusions (25) and snap grooves (26). The snap ring (13) and the sliding sleeve (20) are snapped together by the snap protrusions (25) and the snap grooves (26).

Images