Modular lifting stage

Abstract

This utility model discloses a modular lifting stage, including a base and a lifting mechanism. The lifting mechanism includes fixed plates, adjusting seats, mounting seats, and drive rods. The fixed plates are respectively disposed on the left and right sides of the upper end of the base. Adjusting seats are respectively disposed on the front and rear sides between the opposite inner sides of the two fixed plates. Drive rods are rotatably connected inside the four sets of adjusting seats. A stage panel is disposed on the upper end of the base. Mounting seats are respectively disposed on the front and rear sides of the lower end of the stage panel. The upper ends of the four drive rods are rotatably connected to the lower ends of the vertically adjacent mounting seats. A microcontroller is disposed on the upper end of the base. The input end of the microcontroller is electrically connected to an external power supply. The lifting mechanism also includes a crossbar, a connecting plate, and a bidirectional screw. This modular lifting stage optimizes the driving method, enabling more uniform load distribution and providing more stable lifting, thus solving the problem of stage panel cracks or damage caused by stress concentration.

Description

Technical Field

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

[0002] Modular lifting stages are a common type of stage equipment, widely used in theaters, performing arts centers, convention centers, multi-functional halls, and other venues. They allow for rapid adjustment of stage height to enhance the stage effect. Existing technology includes a patent (CN 216380766 U) that discloses a mechanical modular lifting safety stage, comprising a lifting mechanism, a moving mechanism, and a stage. The bottom of the moving mechanism is movably mounted on top of the lifting mechanism, and the stage is mounted above the moving mechanism. The moving mechanism includes a vertical moving part and a horizontal moving part, with the bottom of the horizontal moving part slidably connected to the vertical moving part. While this equipment can lift the stage using a lifting motor, there is only one contact point between the motor and the lower end of the stage. This leads to stress concentration in the stage structure, especially when heavy props or equipment are placed on the stage. The contact point between the motor and the stage will bear excessive local stress, and long-term stress concentration can cause fatigue damage, even cracks or deformation, affecting the overall structural strength and service life of the stage. Therefore, we propose a modular lifting stage. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a modular lifting stage. Through the cooperation of mounting bases and drive rods, the position of the stage panel can be adjusted. The mounting bases are set at the four corners of the lower end of the stage panel, which can achieve a more uniform load distribution and provide more stable lifting. This solves the problem of stage panel cracks or damage caused by stress concentration. The entire process can be completed with only one servo motor, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a modular lifting stage, including a base and a lifting mechanism; The lifting mechanism includes fixed plates, adjusting seats, mounting seats, and drive rods. The fixed plates are respectively located on the left and right sides of the upper end of the base. Adjusting seats are located on the front and back sides between the inner sides of the two fixed plates. Drive rods are rotatably connected inside the four sets of adjusting seats. A stage board is located at the upper end of the base. Mounting seats are located on the front and back sides of the lower end of the stage board. The upper ends of the four drive rods are rotatably connected to the lower ends of the vertically adjacent mounting seats. Through the cooperation of the mounting seats and drive rods, the position of the stage board can be adjusted. The mounting seats are located at the four corners of the lower end of the stage board, which can achieve a more uniform load distribution and provide more stable lifting. This solves the problem of stage board cracks or damage caused by stress concentration. The entire process can be completed with only one servo motor.

[0005] Furthermore, a microcontroller is installed at the upper end of the base. The input terminal of the microcontroller is electrically connected to an external power supply, enabling it to regulate the electrical components inside the device.

[0006] Furthermore, the lifting mechanism also includes a crossbar, a connecting plate, and a bidirectional screw. The crossbars are respectively located on the front and rear sides between the opposite inner surfaces of the two fixed plates. The two crossbars are slidably connected to the sliding holes corresponding to the left ends of the connecting plates. An adjustment seat is provided at the end of the connecting plate away from the center of the base. The adjustment seats are located at the ends of the longitudinally adjacent crossbars away from the center of the base. The bidirectional screw is rotatably connected to the middle between the opposite inner surfaces of the two fixed plates. The connecting plates are threaded to the left and right sides of the outer arc surface of the bidirectional screw through threaded holes provided at the middle of their right ends, which can adjust the position of the adjustment seats.

[0007] Furthermore, it also includes servo motors, all of which are located on the right end of the fixed plate on the right side. The left end of the output shaft of each servo motor is fixedly connected to the right end of the bidirectional screw, and the input end of each servo motor is electrically connected to the output end of the microcontroller, enabling it to drive the bidirectional screw to rotate.

[0008] Furthermore, a second corrugated pipe is provided between the end of the connecting plate away from the center of the base and the end of the fixing plate near the center of the base. The second corrugated pipe is respectively sleeved on the left and right sides of the outer arc surface of the bidirectional screw. A first corrugated pipe is provided between the opposite inner sides of the two connecting plates. The first corrugated pipe is sleeved in the middle of the outer arc surface of the bidirectional screw. The first and second corrugated pipes can prevent the bidirectional screw from directly contacting the external environment, thus preventing external debris from adhering to the outside of the bidirectional screw and reducing its service life.

[0009] Furthermore, it also includes laser rangefinders, which are all located on the front side of the upper end of the base. The laser rangefinders correspond to the vertical positions of the adjacent stage panels. The laser rangefinders are all bidirectionally electrically connected to the microcontroller and can measure the distance the stage panels move.

[0010] Furthermore, support seats are respectively provided on the left and right sides of the upper end of the base. Sliding columns are slidably connected in the sliding grooves opened in the middle of the upper end of the support seats. Baffles are provided at the lower ends of the sliding columns. The upper ends of the four sliding columns are fixedly connected to the lower end of a stage board. The sliding columns can play a guiding and supporting role to prevent the stage board from shifting.

[0011] Furthermore, the upper end of the base is provided with a fixing rod, and the upper side of the fixing rod is slidably connected with a mounting plate. The slots opened at the upper end of the mounting plate are each inserted with a connecting bolt. The lower side of the outer arc surface of the connecting bolt is threaded with a nut. The adjusting threaded holes opened at both ends of the mounting plate are each threaded with a tightening screw. The inner sides of two longitudinally adjacent tightening screws are in contact with the outer surface of a fixing rod, which can splice and fix the stage board.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This modular lifting stage has the following advantages: By using the mounting base and drive rod in combination, the position of the stage board can be adjusted. The mounting base is set at the four corners of the lower end of the stage board, which can achieve a more even load distribution and provide more stable lifting. This solves the problem of stage board cracks or damage caused by stress concentration, and ensures the structural strength and integrity of the stage board. The whole process can be completed with only one servo motor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the right side of this utility model; Figure 3 This is a schematic diagram of the upper sectional structure of this utility model; Figure 4 This is a schematic diagram of the front sectional structure of the present invention; Figure 5 This is a schematic diagram of the lower sectional structure of the present invention; Figure 6 This is a schematic diagram of the lower cross-sectional structure of the mounting plate of this utility model; Figure 7 This is an enlarged structural diagram of point A in this utility model.

[0014] In the diagram: 1. Base, 2. Operating table, 3. Support seat, 4. Sliding column, 5. Stage board, 6. Lifting mechanism, 61. Fixing plate, 62. Crossbar, 63. Connecting plate, 64. Adjusting seat, 65. Mounting seat, 66. Drive rod, 67. Bidirectional screw, 7. Servo motor, 8. Corrugated pipe I, 9. Corrugated pipe II, 10. Laser rangefinder, 11. Fixing rod, 12. Mounting plate, 13. Connecting bolt, 14. Nut, 15. Tightening screw, 16. Microcontroller. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-7 This embodiment provides a technical solution: a modular lifting stage, including a base 1. Before use, the corresponding number of stage panels 5 are selected according to the size and shape of the stage. The size of the stage panels 5 is larger than that of the base 1. During the subsequent assembly of the stage, the operator first splices the stage panels 5 so that each stage panel 5 comes into contact with each other. The stage also includes a lifting mechanism 6. The lifting mechanism 6 includes a fixed plate 61, an adjusting seat 64, a mounting seat 65, and a drive rod 66. The fixed plates 61 are respectively located on the left and right sides of the upper end of the base 1. Adjusting seats 64 are respectively located on the front and rear sides between the inner sides of the two fixed plates 61. The drive rod 66 is rotatably connected inside each of the four sets of adjusting seats 64. A stage plate 5 is provided on the upper end of the base 1. Mounting seats 65 are respectively located on the front and rear sides of the lower end of the stage plate 5. The upper ends of the four drive rods 66 are rotatably connected to the lower ends of the vertically adjacent mounting seats 65. The lifting mechanism 6 also includes a crossbar 62, a connecting plate 63, and a bidirectional screw 67. The crossbar 62 is respectively located on the front and rear sides between the inner sides of the two fixed plates 61. The two crossbars 62 are slidably connected to the sliding holes corresponding to the left end of the connecting plate 63. The end of the connecting plate 63 away from the center of the interior of the base 1 is provided with an adjusting seat 64. The adjusting seats 64 are respectively located on the longitudinally adjacent crossbars 62 away from the base. At one end of the inner center of the base 1, a bidirectional screw 67 is rotatably connected to the middle between the opposite inner surfaces of two fixed plates 61. The connecting plates 63 are threaded to the left and right sides of the outer arc surface of the bidirectional screw 67 through threaded holes in the middle of their right ends. During the rotation of the bidirectional screw 67, the two connecting plates 63 will move away from the inner center of the base 1 through the threaded connection. The connecting plates 63 will drive the adjusting seat 64 to move. During the movement of the adjusting seat 64, the adjusting seat 64 will give the mounting seat 65 an upward thrust through the drive rod 66, thereby causing the mounting seat 65 to drive the stage plate 5 to move upward, thereby adjusting the position of the stage plate 5. The mounting seat 65 is set at the four corners of the lower end of the stage plate 5, which can achieve a more uniform load distribution and provide a more stable lifting and lowering, solving the problem of cracks or damage to the stage plate 5 caused by stress concentration. The whole process can be completed with only one drive device.

[0017] Among them, a microcontroller 16 is provided on the upper end of the base 1. The input terminal of the microcontroller 16 is electrically connected to an external power supply and can regulate the electrical components inside the device.

[0018] The system also includes servo motors 7, which are all located on the right end of the fixed plate 61 on the right side. The left end of the output shaft of each servo motor 7 is fixedly connected to the right end of the bidirectional screw 67. The input end of each servo motor 7 is electrically connected to the output end of the microcontroller 16. The output shaft of the servo motor 7 drives the bidirectional screw 67 to rotate. During the rotation, the bidirectional screw 67 will drive the two connecting plates 63 to move away from the center of the base 1 through the threaded connection.

[0019] Among them, a second corrugated pipe 9 is respectively provided between the end of the connecting plate 63 away from the internal center of the base 1 and the end of the fixing plate 61 near the internal center of the base 1. The second corrugated pipe 9 is respectively sleeved on the left and right sides of the outer arc surface of the bidirectional screw 67. A first corrugated pipe 8 is provided between the opposite inner sides of the two connecting plates 63. The first corrugated pipe 8 is sleeved in the middle of the outer arc surface of the bidirectional screw 67. During the rotation of the bidirectional screw 67, the two connecting plates 63 will move away from the internal center of the base 1 through the threaded connection. At this time, the first corrugated pipe 8 extends and the second corrugated pipe 9 contracts. The first corrugated pipe 8 and the second corrugated pipe 9 can avoid direct contact between the bidirectional screw 67 and the external environment. This can prevent external debris from adhering to the outside of the bidirectional screw 67 and reducing the service life of the bidirectional screw 67.

[0020] The system also includes a laser rangefinder 10, which is located on the front side of the upper end of the base 1. The laser rangefinder 10 corresponds to the vertical position of the adjacent stage board 5. The laser rangefinder 10 is bidirectionally electrically connected to the microcontroller 16. The laser rangefinder 10 measures the distance between its upper end and the lower end of the stage board 5 in real time (e.g., b). By subtracting the initial distance between the upper end of the laser rangefinder 10 and the lower end of the stage board 5 from the current distance between the upper end of the laser rangefinder 10 and the lower end of the stage board 5, the distance the stage board 5 has risen can be obtained.

[0021] Among them: support seats 3 are respectively provided on the left and right sides of the upper end of the base 1. Sliding columns 4 are slidably connected in the sliding groove opened in the middle of the upper end of the support seat 3. The lower end of each sliding column 4 is provided with a baffle. The upper end of each of the four sliding columns 4 is fixedly connected to the lower end of a stage board 5. The sliding columns 4 can play a guiding and supporting role to prevent the stage board 5 from shifting.

[0022] The base 1 has a fixed rod 11 on its upper end. The upper side of the fixed rod 11 is slidably connected to a mounting plate 12. The mounting plate 12 has a slot at its upper end with a connecting bolt 13 inserted into it. The lower side of the outer arc surface of the connecting bolt 13 is threaded with a nut 14. The adjusting threaded holes at both ends of the mounting plate 12 are threaded with tightening screws 15. The inner sides of two longitudinally adjacent tightening screws 15 are in contact with the outer surface of a fixed rod 11. The operator pushes the mounting plate 12 so that the two vertically adjacent mounting plates 12 are in contact with each other. After contact, the operator rotates the tightening screws 15 to fix the mounting plate 12. Then, the connecting bolt 13 is inserted into the two vertically adjacent slots. The nut 14 is then connected to the connecting bolt 13. The nut 14 is then rotated. During the rotation, the nut 14 will drive the mounting plate 12 on the lower side to move upward. When the nut 14 cannot be turned, it means that the nut 14 is in close contact with the mounting plate 12 on the lower side.

[0023] The working principle of the modular lifting stage provided by this utility model is as follows: Before use, select the corresponding number of stage panels 5 according to the size and shape of the stage. The size of the stage panel 5 is larger than that of the base 1 (the length of the stage panel 5 is greater than the length of the base 1, and the width of the stage panel 5 is greater than the width of the base 1). During the subsequent assembly of the stage, the operator first splices the stage panels 5. When the stage panels 5 come into contact with each other, the two vertically adjacent slots overlap. Then, the operator pushes the mounting plate 12 so that the two vertically adjacent mounting plates 12 come into contact with each other. After contact, the operator rotates and tightens the screw 15 to fix the mounting plate 12. Then, the connecting bolt 13 is inserted into the two vertically adjacent slots, and then the nut 14 is connected to the connecting bolt 13. Connect the components, then rotate nut 14. During rotation, nut 14 will move the lower mounting plate 12 upwards. When nut 14 cannot be turned further, it indicates that nut 14 is tightly fitted to the lower mounting plate 12. After assembling the stage, measure the distance between the upper end of the laser rangefinder 10 and the lower end of the stage panel 5. During use, the built-in light source of the laser rangefinder 10 emits a laser beam to the lower end of the stage panel 5. The laser beam reflects upon contact with the lower end of the stage panel 5, and the laser rangefinder 10 receives the reflected light. The laser rangefinder 10 calculates the distance between the upper end of the laser rangefinder 10 and the lower end of the stage panel 5 by measuring the round-trip time (TOF) or phase difference (e.g., denoted as a). Subsequent laser rangefinder... The 9 unit transmits the detected information to the microcontroller 16 via its built-in data transmission module. The microcontroller 16 receives the detected data via its built-in serial communication port. During the use of the modular lifting stage, the servo motor 7 starts running under the control of the microcontroller 16. The output shaft of the servo motor 7 drives the bidirectional screw 67 to rotate. During the rotation of the bidirectional screw 67, the two connecting plates 63 move away from the center of the base 1 through the threaded connection. At this time, the first bellows 8 extends and the second bellows 9 retracts. The first bellows 8 and the second bellows 9 can prevent the bidirectional screw 67 from directly contacting the external environment. This can prevent external debris from adhering to the outside of the bidirectional screw 67 and reducing its service life. The stage 63 moves the adjusting seat 64. During this movement, the adjusting seat 64 provides an upward thrust to the mounting seat 65 via the drive rod 66, causing the mounting seat 65 to move the stage 5 upwards. This adjusts the position of the stage 5. While the stage 5 moves, the laser rangefinder 10 measures the distance between its upper end and the lower end of the stage 5 in real time (let's call it b). Subtracting the initial distance between the upper end of the laser rangefinder 10 and the lower end of the stage 5 from this current distance gives the distance the stage 5 rises by (let's call it c, c=ba). The height of the remaining stage 5 is adjusted according to the above procedure to ensure each stage 5 is level.If the stage platform 5 requires varying heights in certain areas due to different stage height requirements, the height of the stage platform 5 in that area can be adjusted in real time.

[0024] It is worth noting that the microcontroller 16 disclosed in the above embodiments can be AT89C51, the servo motor 7 can be 5IK200A-AF, and the laser rangefinder 10 can be HMLDM-UD100A. The microcontroller 16 controls the servo motor 7 and the laser rangefinder 10 using methods commonly used in the prior art.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A modular lifting stage comprising a base (1), characterized in that: It also includes a lifting mechanism (6); Lifting mechanism (6): It includes a fixed plate (61), an adjusting seat (64), a mounting seat (65) and a drive rod (66). The fixed plate (61) is respectively located on the left and right sides of the upper end of the base (1). The front and rear sides of the two fixed plates (61) are respectively provided with adjusting seats (64). The drive rod (66) is rotatably connected inside the four sets of adjusting seats (64). The upper end of the base (1) is provided with a stage plate (5). The front and rear sides of the lower end of the stage plate (5) are respectively provided with mounting seats (65). The upper ends of the four drive rods (66) are rotatably connected to the lower ends of the vertically adjacent mounting seats (65).

2. A modular lift stage as claimed in claim 1, wherein: It also includes an operating table (2) and a microcontroller (16). The operating table (2) is located outside the base (1). The microcontroller (16) is installed on the upper end of the operating table (2). The input terminal of the microcontroller (16) is electrically connected to an external power supply.

3. A modular lift stage as claimed in claim 2, wherein: The lifting mechanism (6) also includes a crossbar (62), a connecting plate (63), and a bidirectional screw (67). The crossbar (62) is respectively set on the front and rear sides between the opposite inner sides of the two fixed plates (61). The two crossbars (62) are slidably connected to the sliding holes corresponding to the left end of the connecting plate (63). The end of the connecting plate (63) away from the inner center of the base (1) is respectively provided with an adjustment seat (64). The adjustment seat (64) is located at the end of the longitudinally adjacent crossbar (62) away from the inner center of the base (1). The bidirectional screw (67) is rotatably connected to the middle between the opposite inner sides of the two fixed plates (61). The connecting plate (63) is threaded to the left and right sides of the outer arc surface of the bidirectional screw (67) through the threaded hole set in the middle of its right end.

4. A modular lift stage as claimed in claim 3, wherein: It also includes servo motors (7), all of which are located on the right end of the fixed plate (61) on the right side. The left end of the output shaft of each servo motor (7) is fixedly connected to the right end of the bidirectional screw (67), and the input end of each servo motor (7) is electrically connected to the output end of the microcontroller (16).

5. A modular lift stage as claimed in claim 3, wherein: A second corrugated pipe (9) is provided between the end of the connecting plate (63) away from the center of the base (1) and the end of the fixing plate (61) near the center of the base (1). The second corrugated pipe (9) is respectively sleeved on the left and right sides of the outer arc surface of the bidirectional screw (67). A first corrugated pipe (8) is provided between the opposite inner sides of the two connecting plates (63). The first corrugated pipe (8) is sleeved in the middle of the outer arc surface of the bidirectional screw (67).

6. A modular lift stage as claimed in claim 2, wherein: It also includes a laser rangefinder (10), which is located on the front side of the upper end of the base (1). The laser rangefinder (10) is positioned vertically and vertically opposite to the adjacent stage board (5). The laser rangefinder (10) is bidirectionally electrically connected to the microcontroller (16).

7. A modular lift stage as claimed in claim 1, wherein: Support seats (3) are provided on the left and right sides of the upper end of the base (1). Sliding columns (4) are slidably connected in the sliding grooves opened in the middle of the upper end of the support seats (3). Baffles are provided at the lower ends of the sliding columns (4). The upper ends of the four sliding columns (4) are fixedly connected to the lower end of a stage board (5).

8. The modular lift stage of claim 1, wherein: The upper end of the base (1) is provided with a fixing rod (11). The upper side of the fixing rod (11) is slidably connected with a mounting plate (12). The slots opened at the upper end of the mounting plate (12) are all fitted with connecting bolts (13). The lower side of the outer arc surface of the connecting bolts (13) is threaded with nuts (14). The adjusting threaded holes opened at the front and rear ends of the mounting plate (12) are all threaded with tightening screws (15). The inner ends of two longitudinally adjacent tightening screws (15) are in contact with the outer surface of a fixing rod (11).

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