Rack-type lifting stage

Abstract

This utility model relates to the field of stage technology and discloses a rack and pinion lifting stage, including a base. A sliding box is fixedly connected to the top center of the base. A first motor is provided at the rear end of the sliding box and is fixedly connected to the base. A first gear is fixedly connected to the output end of the first motor. A rack is slidably connected to the inner wall of the sliding box and meshes with the first gear. First connecting plates are fixedly connected to the front and rear ends of the top right side of the base, and tracks are fixedly connected to the top of the front and rear ends of the top left side of the base. In this utility model, the first motor drives the gear to rotate, which in turn drives the rack to move, pushing the push rod, which in turn moves the pulley, causing the folding frame to move. The slider slides on the inner wall of the slide groove, moving the top plate upward. This allows for support of cast-in-place stages of different heights, not limited to supporting cast-in-place stages of a single height. It has low operating costs and high practicality.

Description

Technical Field

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

[0002] The lifting function of a stage primarily relies on a mechanical transmission system. Common transmission methods include screw drive, chain drive, and hydraulic drive. Screw drive is characterized by high precision and smooth transmission, accurately controlling the stage's lifting height. Chain drive offers advantages such as high load-bearing capacity and high transmission efficiency, making it suitable for large lifting stages. Hydraulic drive uses liquid as the working medium, converting mechanical energy into hydraulic energy via a hydraulic pump, and then converting that hydraulic energy back into mechanical energy via a hydraulic cylinder to achieve stage lifting. It boasts advantages such as high output force, smooth movement, and ease of control.

[0003] Rack and pinion lifting stages are widely used in cultural and entertainment venues such as theaters, auditoriums, television stations, and stadiums, as well as in some industrial production and logistics warehousing fields. In cultural and entertainment venues, they are used for various performances, conferences, exhibitions, and other activities, providing audiences with a rich and diverse range of visual effects. In industrial production and logistics warehousing, they can be used for loading and unloading goods, lifting and lowering warehouse shelves, etc., improving work efficiency and space utilization.

[0004] When the motor stops working or an accident occurs, the stage may slide down due to gravity, which poses a serious safety threat to the performers or equipment and props placed on the stage.

[0005] To address the aforementioned issues, a rack and pinion lifting stage is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a rack and pinion lifting stage, which solves the problem in the background technology that when the motor stops working or an accident occurs, the stage may slide down due to gravity, which will cause serious safety threats to the performers or equipment and props placed on the stage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rack-and-pinion lifting stage, comprising a base, a sliding box fixedly connected to the top center of the base, a first motor disposed at the rear end of the sliding box and fixedly connected to the base, a first gear fixedly connected to the output end of the first motor, a rack slidably connected to the inner wall of the sliding box and meshing with the first gear, a first connecting plate fixedly connected to both the front and rear ends of the top right side of the base, and a track fixedly connected to both the front and rear ends of the top left side of the base, with pulleys disposed inside the track, a support column rotatably connected between the pulleys, a push rod fixedly connected to the right side of the support column, and the push rod being connected to the left side of the rack. The base is fixedly connected to the side. A stage is provided on the top of the base. Second connecting plates are fixedly connected to the bottom of the left and right sides of the stage. Slide grooves are provided on the inner walls of the front and rear ends of the bottom of the stage. Sliders are slidably connected to the inner walls of the slide grooves. Folding frames are rotatably connected between the sliders, the first connecting plate, the second connecting plate and the support column. Fixed sleeves are fixedly connected at the four corners of the top of the base. Telescopic sleeves are slidably connected to the top of the fixed sleeves. Connecting rods are fixedly connected inside the telescopic sleeves. Pistons are fixedly connected to the bottom of the connecting rods. One-way valves are passed through and fixedly connected inside the fixed sleeves. A plug is provided at the other end of the fixed sleeves. A drive assembly is provided on the left side of the stage.

[0008] By adopting the above technical solution, the track allows the pulley to slide on the inner wall, the sliding box allows the rack to move on the inner wall, pulling the support column and rotating the folding frame, thus supporting the stage.

[0009] As a further description of the above technical solution: the driving component includes a second motor, which is fixedly connected to the left side of the front end of the stage, and a rotating shaft is fixedly connected to the output end of the second motor, and a rotating plate is fixedly connected to the outer wall of the rotating shaft.

[0010] By adopting the above technical solution, the second motor drives the rotating shaft to rotate, which in turn drives the rotating plate to rotate, while the stage does not rotate.

[0011] As a further description of the above technical solution: a third motor is fixedly connected to the rear end of the top of the rotating plate, and a rotating column is fixedly connected to the output end of the third motor.

[0012] By adopting the above technical solution, a support plate is fixed at the rear end of the third motor, and the support plate is fixed to the rotating plate.

[0013] As a further description of the above technical solution: the outer rings at both ends of the rotating column are fixedly connected with second gears, and the four corners on the right side of the rotating plate are fixedly connected with fixing columns.

[0014] By adopting the above technical solution, a slot is opened inside the fixed column, so that the second gear can enter the inside and mesh with the telescopic column.

[0015] As a further description of the above technical solution: the inner wall of the fixed column is slidably connected to a telescopic column, and the telescopic column is meshed with the second gear.

[0016] By adopting the above technical solution, the telescopic column slides on the inner wall of the fixed column, and the top of the telescopic column is limited to prevent it from sliding out.

[0017] As a further description of the above technical solution: a drive pulley is fixedly connected to the outer ring of the middle end of the rotating column.

[0018] By adopting the above technical solution, the rotating column drives the active belt pulley to rotate.

[0019] As a further description of the above technical solution: a rotating rod is rotatably connected to the bottom right side of the rotating plate, and a driven pulley is fixedly connected to the outer ring of the middle end of the rotating rod.

[0020] By adopting the above technical solution, the driven pulley drives the rotating rod to rotate.

[0021] As a further description of the above technical solution: a belt is provided between the driving pulley and the driven pulley.

[0022] By adopting the above technical solution, the driven pulley is driven to rotate by the active pulley and belt, which in turn causes the rotating column and rotating rod to rotate.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. The present invention provides a rack and pinion lifting stage, which firstly drives the gear to rotate through the first motor, and the gear drives the rack to move, which pushes the push rod, drives the pulley to move, and causes the folding frame to move. The slider slides on the inner wall of the slide groove, moving the top plate upward, which can raise it to different heights. The stage is protected by a one-way valve, a fixed sleeve, a telescopic sleeve and a piston to prevent it from sliding down.

[0025] 2. The rack and pinion lifting stage provided by this utility model uses a second motor and a rotating shaft to drive the rotating plate to rotate, a third motor to drive the second gear to rotate, and a driving pulley and a belt to drive the driven pulley, so that the rotating column and the rotating rod rotate, causing the telescopic column to slide on the inner wall of the fixed column to support the rotating plate, thereby increasing the stage support area. The support area can be adjusted as needed, thus improving the applicability of this stage stabilization device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the slide groove of this utility model;

[0028] Figure 3 This is an exploded structural diagram of the rotating plate of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the third motor of this utility model;

[0030] Figure 5 This is a schematic diagram of the exploded structure of the plug of this utility model.

[0031] In the diagram: 1. Base; 2. First motor; 3. First gear; 4. Sliding box; 5. Rack; 6. First connecting plate; 7. Push rod; 8. Pulley; 9. Stage; 10. Slide; 11. Slider; 12. Folding frame; 13. Second connecting plate; 14. Second motor; 15. Rotating plate; 16. Fixed column; 17. Rotating shaft; 18. Third motor; 19. Rotating column; 20. Second gear; 21. Drive pulley; 22. Telescopic column; 23. Belt; 24. Rotating rod; 25. Driven pulley; 26. Support column; 27. Track; 28. Fixed sleeve; 29. ​​Telescopic sleeve; 30. Connecting rod; 31. Piston; 32. One-way valve; 33. Plug. Detailed Implementation

[0032] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0034] Reference Figure 1 The present invention relates to a rack and pinion lifting stage, comprising a base 1, a sliding box 4 fixedly connected to the top middle of the base 1, a rack 5 inside the sliding box 4, which slides on the inner wall, and a first motor 2 is provided at the rear end of the sliding box 4, and the first motor 2 is fixedly connected to the base 1, and the first motor 2 is supported by a fixing block at the top of the base 1.

[0035] Reference Figure 1 and Figure 2The first motor 2 has a first gear 3 fixedly connected to its output end. A rack 5 is slidably connected to the inner wall of the sliding box 4, and the rack 5 meshes with the first gear 3. The first connecting plate 6 is fixedly connected to the front and rear ends of the top right side of the base 1. The track 27 is fixedly connected to the top of the front and rear ends of the left side of the base 1. The track 27 has a pulley 8 inside, which moves along the inner wall of the track 27 in a straight line. The two pulleys 8 are moved by the support column 26. The support column 26 is rotatably connected between the pulleys 8. The push rod 7 is fixedly connected to the right side of the support column 26, and the push rod 7 is fixedly connected to the left side of the rack 5. The stage 9 is set on the top of the base 1. The second connecting plate 13 is fixedly connected to the bottom of the left and right sides of the stage 9. The inner walls of the front and rear ends of the bottom of the stage 9 are provided with a sliding groove 10. The inner wall of the sliding groove 10 is slidably connected to a slider 11. The slider 11, the first connecting plate 6, the second connecting plate 13 and the support column 26 are rotatably connected to a folding frame 12. The folding frame 12 is connected to the rotating shaft by two connecting rods. The system consists of a first motor 2 driving a first gear 3 to move, which in turn moves a rack 5, pulling a push rod 7 to the right. The push rod 7 pulls a support column 26, causing a pulley 8 to move, which in turn rotates a connecting rod. This rotation causes the middle ends of the two connecting rods to rotate, causing the slider 11 to slide along the inner wall of the slide groove 10, thus pushing the stage 9 upward. At the four corners of the top of the base 1, evenly distributed fixed sleeves 28 are fixedly connected. A telescopic sleeve 29 is slidably connected to the top of the fixed sleeve 28. A connecting rod 30 is fixedly connected inside the telescopic sleeve 29, and a piston 31 is fixedly connected to the bottom of the connecting rod 30. A one-way valve 32 passes through and is fixedly connected inside the fixed sleeve 28. A plug 33 is provided at the other end of the fixed sleeve 28. As the telescopic sleeve 29 moves with the stage 9, it moves the internal connecting rod 30 and piston 31, drawing in air. Air enters through the one-way valve 32 but cannot escape, creating air pressure to prevent the stage 9 from suddenly dropping. The plug 33 allows the internal air to escape.

[0036] Reference Figures 3-5A drive assembly is located on the left side of stage 9. The drive assembly includes a second motor 14, which is fixedly connected to the left front end of stage 9 and to the outer wall of the front end of stage 9. The output end of the second motor 14 does not contact stage 9. The second motor 14 drives a rotating shaft 17 to rotate, which is rotatably connected to stage 9. The rotating shaft 17 is fixed to a rotating plate 15, causing the rotating plate 15 to rotate. The second motor 14 has a self-locking function. The output end of the second motor 14 is fixedly connected to the rotating shaft 17, and the outer wall of the rotating shaft 17 is fixedly connected to the rotating plate 15. A third motor 18 is fixedly connected to the top and rear end of the rotating plate 15. The output end of the third motor 18 is fixedly connected to a rotating column 19. Second gears 20 are fixedly connected to the outer rings of both ends of the rotating column 19. Fixed columns 16 are fixedly connected to the four corners on the right side of the rotating plate 15. Telescopic columns 22 are slidably connected to the inner walls of the fixed columns 16, and the telescopic columns 22 mesh with the second gears 20. The outer ring of the middle end of the rotating column 19 is fixed... A drive pulley 21 is fixedly connected to the rotating plate 15. A rotating rod 24 is rotatably connected to the bottom right side of the rotating plate 15. A rotating column 19 and the rotating rod 24 are connected to each other by support sleeves at their front and rear ends. The support sleeves are fixed to the rotating plate 15, so that the rotating rod 24 and the rotating column 19 are supported. A driven pulley 25 is fixedly connected to the outer ring of the middle end of the rotating rod 24. A belt 23 is provided between the drive pulley 21 and the driven pulley 25. The rotating column 19 is driven to rotate by the third motor 18. The rotating column 19 drives the drive pulley 21. The drive pulley 21 and the belt 23 drive the driven pulley 25 to rotate, so that the rotating rod 24 rotates. This drives the second gears 20 at the front and rear ends of the rotating rod 24 and the rotating column 19 to rotate. The second gears 20 mesh with the telescopic column 22, so that the telescopic column 22 moves downward. The telescopic column 22 can only move up and down within the inner wall of the fixed column 16 and cannot rotate, so that the telescopic column 22 supports the rotating plate 15.

[0037] Working principle: The first motor 2 drives the first gear 3 to move, causing the rack 5 to move, which pulls the push rod 7 to the right. The push rod 7 pulls the support column 26, causing the pulley 8 to move, which drives the folding frame 12 to rotate, causing the slider 11 to slide on the inner wall of the slide groove 10. The folding frame 12 pushes the stage 9 upward, and the telescopic sleeve 29 moves with the stage 9, driving the internal connecting rod 30 and piston 31 to move, thus evacuating air. Air enters through the one-way valve 32, preventing it from leaving, creating air pressure and preventing the stage 9 from suddenly dropping. The plug 33 allows the internal air to escape. When the required support area needs to be increased, the second motor 14 drives the rotating shaft 17 to rotate, flipping the rotating plate 15 to be on the same horizontal line as the stage 9. The third motor 18 drives the rotating column 19 to rotate, which in turn drives the driving pulley 21. The driving pulley 21 and the belt 23 drive the driven pulley 25 to rotate, causing the rotating rod 24 to rotate. This causes the second gears 20 at both ends of the rotating rod 24 and the rotating column 19 to rotate. The second gears 20 mesh with the telescopic column 22, causing the telescopic column 22 to move downwards, supporting the rotating plate 15 and increasing the support area.

[0038] 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.

[0039] 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.

Claims

1. A rack and pinion lifting stage, comprising a base (1), characterized in that: A sliding box (4) is fixedly connected to the top middle of the base (1). A first motor (2) is provided at the rear end of the sliding box (4), and the first motor (2) is fixedly connected to the base (1). A first gear (3) is fixedly connected to the output end of the first motor (2). A rack (5) is slidably connected to the inner wall of the sliding box (4), and the rack (5) meshes with the first gear (3). A first connecting plate (6) is fixedly connected to both the front and rear ends of the top right side of the base (1). A track (27) is fixedly connected to both the front and rear ends of the top left side of the base (1). A pulley (8) is provided inside the track (27). A support column (26) is rotatably connected between the pulleys (8). A push rod (7) is fixedly connected to the right side of the support column (26), and the push rod (7) is fixedly connected to the left side of the rack (5). A stage (9) is provided on the top of the base (1). 9) A second connecting plate (13) is fixedly connected to the bottom of both the left and right sides. A sliding groove (10) is opened on the inner wall of the front and rear ends of the bottom of the stage (9). A slider (11) is slidably connected to the inner wall of the sliding groove (10). A folding frame (12) is rotatably connected between the slider (11), the first connecting plate (6), the second connecting plate (13) and the support column (26). A fixed sleeve (28) is fixedly connected at the four corners of the top of the base (1). A telescopic sleeve (29) is slidably connected to the top of the fixed sleeve (28). A connecting rod (30) is fixedly connected inside the telescopic sleeve (29). A piston (31) is fixedly connected to the bottom of the connecting rod (30). A one-way valve (32) is fixedly connected through the fixed sleeve (28). A plug (33) is provided at the other end of the fixed sleeve (28). A drive assembly is provided on the left side of the stage (9).

2. The rack and pinion lifting stage according to claim 1, characterized in that: The drive assembly includes a second motor (14), which is fixedly connected to the left front end of the stage (9). The output end of the second motor (14) is fixedly connected to a rotating shaft (17), and a rotating plate (15) is fixedly connected to the outer wall of the rotating shaft (17).

3. A rack and pinion lifting stage according to claim 2, characterized in that: The top rear end of the rotating plate (15) is fixedly connected to a third motor (18), and the output end of the third motor (18) is fixedly connected to a rotating column (19).

4. A rack and pinion lifting stage according to claim 3, characterized in that: The outer rings at both ends of the rotating column (19) are fixedly connected with second gears (20), and the four corners on the right side of the rotating plate (15) are fixedly connected with fixed columns (16).

5. A rack and pinion lifting stage according to claim 4, characterized in that: The inner wall of the fixed column (16) is slidably connected to a telescopic column (22), and the telescopic column (22) is meshed with the second gear (20).

6. A rack and pinion lifting stage according to claim 3, characterized in that: The rotating column (19) is fixedly connected to the outer ring of the middle end of the drive pulley (21).

7. A rack and pinion lifting stage according to claim 2, characterized in that: The rotating plate (15) is rotatably connected to the bottom right side of the rotating rod (24), and the driven pulley (25) is fixedly connected to the outer ring of the middle end of the rotating rod (24).

8. A rack and pinion lifting stage according to claim 6, characterized in that: A belt (23) is provided between the driving pulley (21) and the driven pulley (25).

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