A liftable flexible folding screen device

Abstract

The utility model discloses a liftable flexible folding screen device belongs to stage equipment technical field, a liftable flexible folding screen device, it includes support, pulley assembly, flexible screen and lifting assembly, the both ends of flexible screen are connected with steel wire rope respectively, lifting assembly includes lifting drive arrangement and support frame, and the upper side of support frame is fixedly arranged, and the steel wire rope of the other end of flexible screen is fixedly connected with support, and the end face of the side of support close to lifting assembly is a end face, pulley assembly includes pulley seat, pulley axle and a plurality of pulleys, and pulley seat is rotatably connected with the lower part of support through pulley axle, and a plurality of pulleys are installed on pulley seat, and the outside profile surface of the pulley of the side of lifting assembly closest is c outer edge surface, and c outer edge surface part exceeds the outside of pulley seat, and is located the outside of a end face, can realize that flexible screen will not contact with support end face in the process of ascending or descending, thereby reduces the wear and tear of flexible screen surface.

Description

Technical Field

[0001] This utility model belongs to the field of stage equipment technology, and more specifically, relates to a liftable flexible folding screen device. Background Technology

[0002] Flexible screens are used in existing stage performances. Traditional flexible screens are raised and lowered using a fan-shaped folding method, which involves repeatedly folding the flexible screen back and forth to store it in a storage slot. However, with this folding method, the LED beads of the flexible screen are easily scratched and damaged during repeated folding, and the internal cables are also prone to fatigue and breakage due to repeated folding, affecting the lifespan of the screen. At the same time, the screen cannot be completely straightened during use, affecting the viewing experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a liftable flexible folding screen device, which can ensure that the flexible screen does not come into contact with the end face of the support during the rising or falling process, thereby reducing the wear on the surface of the flexible screen.

[0004] The present invention discloses a liftable flexible folding screen device, which includes a bracket, a pulley assembly, a flexible screen, and a lifting assembly; The flexible screen is connected to steel wire ropes at both ends; The lifting assembly includes a lifting drive device and a support frame, with the support frame fixedly installed at the bottom of one side of the lifting drive device; the lifting drive device has the ability to move freely up and down; and the steel wire rope at one end of the flexible screen is fixedly connected to the output end of the lifting drive device. The bracket is fixedly installed on the upper side of the support frame, and the steel wire rope at the other end of the flexible screen is fixedly connected to the bracket; the end face of the bracket near the lifting component is end face a. The pulley assembly includes a pulley seat, a pulley shaft, and several pulleys. The pulley seat is rotatably connected to the lower part of the support through the pulley shaft. Several pulleys are installed on the pulley seat, and the steel wire rope of the flexible screen on the side closest to the support passes through the pulley. The outer contour surface of the pulley closest to the lifting assembly is the c-outer edge surface. The c-outer edge surface extends beyond the outer side of the pulley seat and is located outside the a-end face.

[0005] As a further improvement of this utility model, the pulley assembly also includes a support block; the support block is fixedly disposed on one side of the pulley shaft, and the support block is located between the lower side of the bracket and the upper side of the support block; the lower side of the bracket that abuts against the support block is end face b; the pulley includes a first pulley, a second pulley and a third pulley; the first pulley and the third pulley are respectively disposed on the left and right sides of the pulley seat, and the second pulley is located in the middle of the lower side of the first pulley and the third pulley.

[0006] As a further improvement of this utility model, the pulley assembly also includes a turnbuckle; one end of the turnbuckle is fixedly mounted on one side of the bracket, and the other end of the turnbuckle is fixedly connected to the steel wire rope at one end of the flexible screen.

[0007] As a further improvement of this utility model, the lifting drive device includes a fixed steel frame, a drive device, a primary steel frame, a sprocket device, and a secondary steel frame; the fixed steel frame is located at the bottom, and the support frame is located on one side of the fixed steel frame; the drive device is fixedly installed on the upper part of the fixed steel frame, and the output end of the drive device is fixedly connected to the lower part of the primary steel frame; the primary steel frame and the fixed steel frame are slidably connected; the sprocket device is fixedly installed on the lower part of the secondary steel frame, and both ends of the sprocket device are fixedly connected to the primary steel frame and the secondary steel frame respectively, so that the primary steel frame and the secondary steel frame can move up and down relative to the fixed steel frame.

[0008] As a further improvement of this utility model, when the flexible screen is in the raised state, the upper end of the support block abuts against the b end face, and the steel wire rope of the flexible screen is in contact with the c outer edge face; the lifting component rises and drives the flexible screen to move upward, the c outer edge face exceeds the a end face of the pulley seat, and the flexible screen does not contact the a end face during the rising or falling process.

[0009] As a further improvement of this utility model, when the flexible screen is in the descending state, the pulley seat loses the tensioning effect of the flexible screen's steel wire rope, and the upper end of the support block separates from the b end face; under the action of the flexible screen's own gravity, the pulley seat rotates around the pulley shaft, and the lifting component descends, driving the flexible screen to move downwards until it descends to the lowest point, and the flexible screen is stored inside the support frame.

[0010] As a further improvement of this utility model, a U-shaped base groove is provided on the upper side of the support frame for storing the flexible screen in the lowered state; the shape of the base groove matches the shape of the bottom of the flexible screen in the stored state.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a pulley assembly, the secondary steel frame rises, driving the flexible screen upward. Since the outer edge of the c-shaped part extends beyond the a-shaped part of the pulley seat, the flexible screen is stored in the base groove of the support frame when not in use. The flexible screen will not contact the end face of the support frame during the rising or falling process, thereby reducing wear on the surface of the flexible screen and extending its service life. At the same time, in the raised state, the flexible screen 3 is completely taut under the action of gravity, and the flat flexible screen 3 provides a better viewing experience. Attached Figure Description

[0012] Figure 1 This is a side view of the present invention in its raised state; Figure 2 This is a side view of the present invention in its lowered state; Figure 3 This is an exploded view of the lifting component of this utility model; Figure 4 This is a schematic diagram of the lifting assembly of this utility model; Figure 5 This is a structural diagram of the fixed steel frame, the primary steel frame, and the secondary steel frame of this utility model; Figure 6 This is a schematic diagram of the drive device and sprocket device of this utility model; Figure 7 This is a schematic diagram of the pulley assembly in the raised state of this utility model. Figure 8 This is a schematic diagram of the pulley assembly in the descending state of this utility model.

[0013] Explanation of the labels in the diagram: 1. Bracket; 2. Pulley assembly; 21. Turnbuckle; 22. Pulley seat; 22. First pulley; 221. Second pulley; 222. Third pulley; 223. Pulley shaft; 23. Support block; 24. End face a; 25. End face b; 26. Outer edge face c; 27. Flexible screen; 3. Lifting assembly; 41. Fixed steel frame; 42. Drive device; 43. Primary steel frame; 44. Sprocket device; 45. Secondary steel frame; 46. Support frame. Detailed Implementation

[0014] Specific Implementation Example 1: Please refer to Figures 1-8 A flexible folding screen device that can be raised and lowered includes a support 1, a pulley assembly 2, a flexible screen 3, and a lifting assembly 4. Both ends of the flexible screen 3 are connected to steel wire ropes (not shown in the figure) for pulling the flexible screen 3.

[0015] The lifting assembly 4 includes a fixed steel frame 41, a drive device 42, a primary steel frame 43, a sprocket device 44, a secondary steel frame 45, and a support frame 46. The fixed steel frame 41, primary steel frame 43, and secondary steel frame 45 are arranged sequentially from top to bottom. The fixed steel frame 41 is located at the bottom, and the support frame 46 is located on one side of the fixed steel frame 41. The upper side of the support frame 46 has a U-shaped base groove for accommodating the flexible screen 3 in its lowered state. Preferably, the shape of the base groove matches the shape of the bottom of the flexible screen 3 in its lowered state. The drive device 42 is fixedly mounted on the upper part of the fixed steel frame 41, and the output end of the drive device 42 is fixedly connected to the lower part of the primary steel frame 43. The primary steel frame 43 and the fixed steel frame 41 are slidably connected. In this embodiment, the drive device 42 can be a gear and rack device.

[0016] A sprocket device 44 is fixedly installed on the lower part of the secondary steel frame 45. Both ends of the sprocket device 44 are fixedly connected to the primary steel frame 43 and the secondary steel frame 45 respectively, allowing the primary steel frame 43 and the secondary steel frame 45 to move vertically relative to the fixed steel frame 41. In this embodiment, the lifting assembly 4 includes two stages of lifting. During the first stage of lifting, the primary steel frame 43 moves upward, and the secondary steel frame 45 retracts within the primary steel frame 43. During the second stage of lifting, the secondary steel frame 45 moves upward relative to the primary steel frame 43, extending a greater distance. When the lifting assembly 4 is in its initial state, both the primary steel frame 43 and the secondary steel frame 45 are retracted within the fixed steel frame 41. The upper part of the secondary steel frame 45 extends towards the support frame 46. It should be noted that the drive device 42 and the sprocket device 44 are both existing conventional devices, and their specific connection relationships and working principles will not be elaborated here.

[0017] The side of the secondary steel frame 45 extending toward the support frame 46 is fixedly connected to the steel wire rope at one end of the flexible screen 3.

[0018] The bracket 1 is fixedly installed, and the bracket 1 and the support frame 46 are located on the same side. The bracket 1 is located above the support frame 46, and its height is the same as the initial height of the lifting assembly 4. The pulley assembly 2 is installed on the bracket 1. The pulley assembly 2 includes a turnbuckle 21, a pulley seat 22, a first pulley 221, a second pulley 222, a third pulley 223, a pulley shaft 23, and a support block 24. One end of the turnbuckle 21 is fixedly installed on one side of the bracket 1, and the other end of the turnbuckle 21 is fixedly connected to a steel wire rope at one end of the flexible screen 3. The pulley seat 22 is located on the lower side of the bracket 1, and the pulley shaft 23 is located on the side close to the turnbuckle 21. The pulley seat 22 is rotatably connected to the bracket 1 through the pulley shaft 23. The pulley seat 22 can rotate around the axis of the pulley shaft 23. A support block 24 is fixedly installed on the upper part of the sliding seat 22. The support block 24 is located on the side away from the turnbuckle 21 and is located between the lower side of the bracket 1 and the upper side of the support block 24.

[0019] The first pulley 221, the second pulley 222, and the third pulley 223 are fixedly mounted on the end face of the pulley seat 22. In this embodiment, the first pulley 221 and the third pulley 223 are respectively located on the left and right sides of the pulley seat 22, and the second pulley 222 is located in the middle of the lower side of the first pulley 221 and the third pulley 223. The steel wire rope of the flexible screen 3 passes through the lower side of the first pulley 221 and the third pulley 223 and the upper side of the second pulley 222. The end face of the bracket 1 near the secondary steel frame 45 is end face a 25, the lower side of the bracket 1 that abuts against the support block 24 is end face b 26, and the outer contour surface of the third pulley 223 is outer edge surface c 27. The outer edge surface c 27 extends beyond the outer side of the pulley seat 22 and is located outside end face a 25.

[0020] like Figure 7As shown, when the flexible screen 3 is in the raised state, the upper end of the support block 24 abuts against the b end face 26, and the steel wire rope of the flexible screen 3 is in contact with the c outer edge face 27. The secondary steel frame 45 rises, causing the flexible screen 3 to move upward. Since the c outer edge face 27 extends beyond the a end face 25 of the pulley seat 22, the flexible screen 3 will not contact the a end face 25 during the rising or falling process, thereby reducing wear on the surface of the flexible screen 3. At this time, the flexible screen 3 is completely taut under the action of gravity, and the flat flexible screen 3 provides a better viewing experience.

[0021] like Figure 8 As shown, when the flexible screen 3 is in the descending state, the pulley seat 22 loses the tensioning effect of the steel wire rope of the flexible screen 3, the upper end of the support block 24 separates from the b end face 26, and under the action of the flexible screen 3's own gravity, the pulley seat 22 rotates around the pulley shaft 23. As the secondary steel frame 45 descends, it drives the flexible screen 3 to move downward until it descends to the lowest point, and the flexible screen 3 is stored in the support frame 46.

[0022] Working principle: When the flexible screen 3 is in use, the drive device 42 drives the primary steel frame 43 to move upward toward the fixed steel frame 41, and drives the secondary steel frame 45 to move upward through the sprocket device 44 until the secondary steel frame 45 rises to the highest position. In the raised state, the upper end of the support block 24 abuts against the b end face 26, and the steel wire rope of the flexible screen 3 is in contact with the c outer edge face 27. The rise of the secondary steel frame 45 drives the flexible screen 3 to move upward. Since the c outer edge face 27 exceeds the a end face 25 of the pulley seat 22, the flexible screen 3 will not contact the a end face 25 during the rising or falling process, thereby reducing the wear on the surface of the flexible screen 3. When the flexible screen 3 is stored, the pulley seat 22 loses the tension of the steel wire rope of the flexible screen 3, the upper end of the support block 24 separates from the b end face 26, and under the action of the weight of the flexible screen 3, the pulley seat 22 rotates around the pulley shaft 23. As the secondary steel frame 45 falls, it drives the flexible screen 3 to move downward until it falls to the lowest point, and the flexible screen 3 is stored in the support frame 46.

Claims

1. A height-adjustable flexible folding screen device, characterized in that: It includes a bracket (1), a pulley assembly (2), a flexible screen (3), and a lifting assembly (4); The flexible screen (3) is connected to steel wire ropes at both ends; The lifting assembly (4) includes a lifting drive device and a support frame (46), with the support frame (46) fixedly installed at the bottom of one side of the lifting drive device; The lifting drive device has the ability to move freely up and down; the steel wire rope at one end of the flexible screen (3) is fixedly connected to the output end of the lifting drive device; The bracket (1) is fixedly installed on the upper side of the support frame (46), and the steel wire rope at the other end of the flexible screen (3) is fixedly connected to the bracket (1); the end face of the bracket (1) near the lifting component (4) is end face (25). The pulley assembly (2) includes a pulley seat (22), a pulley shaft (23) and several pulleys. The pulley seat (22) is rotatably connected to the lower part of the bracket (1) through the pulley shaft (23). Several pulleys are installed on the pulley seat (22). The steel wire rope of the flexible screen (3) on the side near the bracket (1) passes through the pulley. The outer contour surface of the pulley closest to the lifting assembly (4) is the c outer edge surface (27). The c outer edge surface (27) extends beyond the outside of the pulley seat (22) and is located outside the a end face (25).

2. The liftable flexible folding screen device according to claim 1, characterized in that: The pulley assembly (2) also includes a support block (24); the support block (24) is fixedly disposed on one side of the pulley shaft (23), and the support block (24) is located between the lower side of the bracket (1) and the upper side of the support block (24); the lower side of the bracket (1) that abuts against the support block (24) is the b end face (26); the pulley includes a first pulley (221), a second pulley (222) and a third pulley (223); the first pulley (221) and the third pulley (223) are respectively disposed on the left and right sides of the pulley seat (22), and the second pulley (222) is located in the middle of the lower side of the first pulley (221) and the third pulley (223).

3. The liftable flexible folding screen device according to claim 1, characterized in that: The pulley assembly (2) also includes a turnbuckle (21); one end of the turnbuckle (21) is fixedly mounted on one side of the bracket (1), and the other end of the turnbuckle (21) is fixedly connected to the wire rope at one end of the flexible screen (3).

4. The liftable flexible folding screen device according to claim 1, characterized in that: The lifting drive device includes a fixed steel frame (41), a drive device (42), a primary steel frame (43), a sprocket device (44), and a secondary steel frame (45). The fixed steel frame (41) is located at the bottom, and the support frame (46) is located on one side of the fixed steel frame (41). The drive device (42) is fixedly installed on the upper part of the fixed steel frame (41), and the output end of the drive device (42) is fixedly connected to the lower part of the primary steel frame (43). The primary steel frame (43) and the fixed steel frame (41) are slidably connected. The sprocket device (44) is fixedly installed on the lower part of the secondary steel frame (45). The two ends of the sprocket device (44) are fixedly connected to the primary steel frame (43) and the secondary steel frame (45) respectively, so that the primary steel frame (43) and the secondary steel frame (45) can move up and down relative to the fixed steel frame (41).

5. The liftable flexible folding screen device according to claim 2, characterized in that: When the flexible screen (3) is in the raised state, the upper end of the support block (24) abuts against the b end face (26), and the steel wire rope of the flexible screen (3) is in contact with the c outer edge face (27); the lifting component (4) rises and drives the flexible screen (3) to move upward, and the c outer edge face (27) extends beyond the a end face (25) of the pulley seat (22). The flexible screen (3) does not contact the a end face (25) during the rising or falling process.

6. The height-adjustable flexible folding screen device according to claim 2, characterized in that: When the flexible screen (3) is in a descending state, the pulley seat (22) loses the tensioning effect of the steel wire rope of the flexible screen (3), and the upper end of the support block (24) separates from the b end face (26). Under the action of the flexible screen (3)'s own gravity, the pulley seat (22) rotates around the pulley shaft (23), and the lifting component (4) descends, driving the flexible screen (3) to move downward until it descends to the lowest point, and the flexible screen (3) is stored in the support frame (46).

7. The liftable flexible folding screen device according to claim 1, characterized in that: The upper side of the support frame (46) is provided with a U-shaped base groove for storing the flexible screen (3) in the lowered state; the shape of the base groove matches the shape of the bottom of the flexible screen (3) in the stored state.

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