Large-tonnage lifting stage synchronizing device

Abstract

The utility model discloses a large-tonnage lifting stage synchronizing device which comprises a stage steel frame, lifting tables are symmetrically arranged at the top of the stage steel frame, jacking components are arranged at the bottoms of the lifting tables and comprise supporting plates arranged at the bottoms of the lifting tables, threaded rods are fixedly connected to the bottoms of the supporting plates, worm wheels are arranged on the outer sides of the threaded rods in a sleeved mode, and the worm wheels are connected with the lifting tables. The side of the worm gear is engaged with a worm, one end of the worm is provided with a driving part, and the bottom of the worm gear is provided with a limiting part for limiting the vertical height of the worm gear; the worm is driven by the driving part to rotate, and the worm drives the worm gear to rotate, so that the threaded rod is driven by threaded connection to move in the vertical direction, synchronous ascending and descending of the two stage lifting tables are achieved, and compared with a lifting table driven by an air cylinder, the worm gear and worm self-locking structure does not work under the condition that a power source is lost. The position of the lifting platform is kept unchanged, and the situation that standing of a performer on the top of the lifting platform is affected due to movement of gravity or other external force is avoided.

Description

Technical Field

[0001] The utility model relates to the field of stage equipment, in particular to a large-tonnage lifting stage synchronization device. Background Art

[0002] The large-tonnage lifting stage is used to lift and lower the performers. The existing lifting synchronization device generally uses a cylinder to drive the lifting and lowering of the lifting stage. When the cylinder fails and lacks air source, the plug rod of the cylinder cannot be kept at the same height for a long time, causing the height of the cylinder-driven lifting stage to change and move, affecting the standing of the performers on the top of the lifting stage. In order to solve the problem that the lifting platform can maintain its position height and will not move due to gravity or other external forces when the power source is lost, a new type of large-tonnage lifting stage synchronization device is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a large-tonnage lifting stage synchronization device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-tonnage lifting stage synchronization device, comprising a stage steel frame, a lifting platform is symmetrically arranged on the top of the stage steel frame, a lifting component is arranged at the bottom of the lifting platform, the lifting component comprises a support plate arranged at the bottom of the lifting platform, a threaded rod is fixedly connected to the bottom of the support plate, a worm wheel is sleeved on the outer side of the threaded rod, a worm is meshingly connected to the side of the worm wheel, a driving part is arranged at one end of the worm, and a limiting part for limiting the vertical height of the worm wheel is arranged at the bottom of the worm wheel.

[0005] Preferably, the limiting portion includes an internally threaded ring column, the top of the internally threaded ring column is fixedly connected to the bottom of the worm gear, the bottom of the internally threaded ring column is inserted and connected with a support sleeve, the bottom end of the threaded rod is inserted and connected to the inner cavity of the support sleeve, and the bottom of the support sleeve is inserted and connected to the inner side of the stage steel frame.

[0006] Preferably, a limiting bolt is inserted and connected to the side of the support sleeve, and a limiting groove for limiting the insertion of the bolt is opened on the side of the threaded rod.

[0007] Preferably, the driving unit includes a motor and a support column arranged at the bottom of the motor, the output end of the motor is fixedly connected to one end of the worm, the other end of the worm is provided with a bearing, and the side of the bearing is fixedly connected to the inner side of the stage steel frame.

[0008] Preferably, a decorative top panel is provided on the top of the stage steel frame, and decorative side panels are provided on the sides of the stage steel frame.

[0009] Preferably, a shielding ring is sleeved on the outer side of the supporting plate, and a connecting soft ring is provided at the intersection of the lifting platform and the stage steel frame.

[0010] Preferably, an inspection door is provided on the side of the stage steel frame.

[0011] Preferably, a plurality of supporting legs are provided at the bottom of the stage steel frame.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model provides a lifting member at the bottom of the lifting platform of the stage steel frame. The user drives the worm to rotate by using a driving part, and the rotating worm drives the worm wheel to rotate, so as to drive the threaded rod to move in the vertical direction by using a threaded connection, so that the lifting platforms of the two stages can be raised and lowered synchronously. Compared with the cylinder-driven lifting platform, the worm gear self-locking structure can keep the lifting platform at a certain position when the power source is lost, and will not move due to gravity or other external forces, so as to affect the performers' standing on the top of the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model as a whole.

[0016] Figure 3 It is a structural schematic diagram of the connection between the worm wheel and the internal threaded ring column of the utility model.

[0017] In the figure: 1. stage steel frame; 101. decorative top plate; 102. decorative side plate; 3. lifting platform; 4. support plate; 401. shielding ring; 5. threaded rod; 501. limiting groove; 6. worm gear; 7. worm; 701. bearing; 8. internal threaded ring column; 9. motor; 901. support column; 10. support sleeve; 11. limiting bolt; 12. support foot; 13. inspection door; 14. connecting soft ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-3A large-tonnage lifting stage synchronization device shown includes a stage steel frame 1, a lifting platform 3 is symmetrically arranged on the top of the stage steel frame 1, a decorative top plate 101 is arranged on the top of the stage steel frame 1, and decorative side plates 102 are arranged on the sides of the stage steel frame 1;

[0020] It should be noted that the decorative top plate 101, the decorative side plates 102 and the stage steel frame 1 are all fixed by screws, a connecting soft ring 14 is provided at the intersection of the lifting platform 3 and the stage steel frame 1, and a cylindrical through hole for the lifting platform 3 to be inserted is opened at the top of the stage steel frame 1 and the decorative top plate 101. The outer side of the connecting soft ring 14 and the inner wall of the cylindrical through hole are bonded with glue, and the connecting soft ring 14 is used to close the gap between the lifting platform 3 and the decorative top plate 101.

[0021] A plurality of supporting legs 12 are provided at the bottom of the stage steel frame 1;

[0022] A lifting member is provided at the bottom of the lifting platform 3;

[0023] Specifically, the lifting member includes a support plate 4 arranged at the bottom of the lifting platform 3, a threaded rod 5 is fixedly connected to the bottom of the support plate 4, a worm wheel 6 is sleeved on the outer side of the threaded rod 5, and a worm 7 is meshedly connected to the side of the worm wheel 6;

[0024] It should be noted that the support plate 4 and the lifting platform 3 are fixed by welding, the support plate 4 and the threaded rod 5 are fixed by welding, the connection between the worm 7 and the worm wheel 6 is provided with threads, and the rest of the parts are smooth curved surfaces, and the outer side of the support plate 4 is provided with a shielding ring 401, which is used to cover the exposure of the support plate 4 and the threaded rod 5 after the lifting platform 3 rises, and its material is the same as that of the decorative top plate 101;

[0025] One end of the worm 7 is provided with a driving part;

[0026] Specifically, the driving unit includes a motor 9 and a support column 901 arranged at the bottom of the motor 9. The output end of the motor 9 is fixedly connected to one end of the worm 7. The other end of the worm 7 is provided with a bearing 701. The side of the bearing 701 is fixedly connected to the inner side of the stage steel frame 1.

[0027] It should be noted that the output end of the motor 9 is fixed to one end of the worm 7 by bolts and nuts, and an inspection door 13 is provided on the side of the stage steel frame 1, so that the user can open the inspection door 13 to inspect the motor 9;

[0028] A limiting portion for limiting the vertical height of the worm wheel 6 is provided at the bottom of the worm wheel 6;

[0029] Specifically, the limiting part includes an internal threaded ring column 8, the top of the internal threaded ring column 8 is fixedly connected to the bottom of the worm gear 6, the bottom of the internal threaded ring column 8 is inserted and connected with a support sleeve 10, the bottom end of the threaded rod 5 is inserted and connected with the inner cavity of the support sleeve 10, and the bottom of the support sleeve 10 is inserted and connected to the inner side of the stage steel frame 1;

[0030] It should be noted that the internal threaded ring column 8 and the worm wheel 6 are fixed by welding, and the inner walls of the internal threaded ring column 8 and the worm wheel 6 are provided with threads corresponding to the threaded rod 5, and the top of the support sleeve 10 is provided with a cylindrical groove for the internal threaded ring column 8 to be inserted, and the bottom cross-sectional diameter of the internal threaded ring column 8 is larger than the top cross-sectional diameter, so that the internal threaded ring column 8 is restricted in the cylindrical groove at the top of the support sleeve 10, and the internal threaded ring column 8 rotates in the support sleeve 10;

[0031] Specifically, a limiting bolt 11 is inserted and connected to the side of the support sleeve 10, and a limiting groove 501 for limiting the insertion of the bolt 11 is opened on the side of the threaded rod 5;

[0032] It should be noted that a threaded through hole for limiting the insertion of the bolt 11 is opened on the side of the support sleeve 10, and the hole is connected to the inner cavity of the support sleeve 10, and the end of the limiting bolt 11 is inserted into the limiting groove 501, thereby preventing the threaded rod 5 from rotating with the rotation of the worm gear 6, so that the position of the lifting platform 3 is lifted and lowered;

[0033] In actual use, by arranging a lifting member at the bottom of the lifting platform 3 of the stage steel frame 1, the user uses the motor 9 to drive the worm 7 to rotate, and the rotating worm 7 drives the worm wheel 6 to rotate, thereby using the threaded connection to drive the threaded rod 5 to move in the vertical direction, so that the two lifting platforms 3 can be synchronously raised and lowered. Compared with the cylinder-driven lifting platform 3, the self-locking structure of the worm wheel 6 and the worm 7 can keep the lifting platform 3 at the same height position when the power source is lost, and will not move due to gravity or other external forces, affecting the performer's standing on the top of the lifting platform 3.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-tonnage lifting stage synchronization device, comprising a stage steel frame (1), characterized in that: A lifting platform (3) is symmetrically arranged on the top of the stage steel frame (1), and a lifting component is arranged at the bottom of the lifting platform (3). The lifting component includes a support plate (4) arranged at the bottom of the lifting platform (3), and a threaded rod (5) is fixedly connected to the bottom of the support plate (4). A worm wheel (6) is sleeved on the outer side of the threaded rod (5), and a worm (7) is meshingly connected to the side of the worm wheel (6). A driving part is arranged at one end of the worm (7), and a limiting part for limiting the vertical height of the worm wheel (6) is arranged at the bottom of the worm wheel (6).

2. A large-tonnage lifting stage synchronization device according to claim 1, characterized in that: The limiting part includes an internal threaded ring column (8), the top of the internal threaded ring column (8) is fixedly connected to the bottom of the worm gear (6), the bottom of the internal threaded ring column (8) is inserted and connected with a support sleeve (10), the bottom end of the threaded rod (5) is inserted and connected to the inner cavity of the support sleeve (10), and the bottom of the support sleeve (10) is inserted and connected to the inner side of the stage steel frame (1).

3. A large-tonnage lifting stage synchronization device according to claim 2, characterized in that: A limiting bolt (11) is inserted and connected to the side of the support sleeve (10), and a limiting groove (501) for inserting the limiting bolt (11) is provided on the side of the threaded rod (5).

4. A large-tonnage lifting stage synchronization device according to claim 2, characterized in that: The driving unit comprises an electric motor (9) and a support column (901) arranged at the bottom of the electric motor (9); the output end of the electric motor (9) is fixedly connected to one end of a worm gear (7); the other end of the worm gear (7) is provided with a bearing (701); the side of the bearing (701) is fixedly connected to the inner side of the stage steel frame (1).

5. A large-tonnage lifting stage synchronization device according to claim 4, characterized in that: The top of the stage steel frame (1) is provided with a decorative top plate (101), and the sides of the stage steel frame (1) are provided with decorative side plates (102).

6. A large-tonnage lifting stage synchronization device according to claim 4, characterized in that: The outer side of the support plate (4) is sleeved with a shielding ring (401), and the interlaced portion between the lifting platform (3) and the stage steel frame (1) is provided with a connecting soft ring (14).

7. A large-tonnage lifting stage synchronization device according to claim 6, characterized in that: An inspection door (13) is provided on the side of the stage steel frame (1).

8. A large-tonnage lifting stage synchronization device according to claim 7, characterized in that: A plurality of supporting legs (12) are arranged at the bottom of the stage steel frame (1).

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