Lifting device for mounting large screen

Abstract

The utility model discloses a lifting device for mounting a large screen. The lifting device mainly comprises a clamping mechanism, a fixer, a telescopic frame and a lifting mechanism, the device is mainly used for hoisting a large display screen on the outer side of a wall. The lifting mechanism is driven to displace through stretching and retracting of the telescopic frame, and the lifting mechanism capable of changing the lifting distance is matched, so that a space convenient for operators to carry out installation construction is reserved, and the device is suitable for screens of different sizes and does not occupy too much ground space; the screens are not prone to deflection or falling off in the hoisting process through the clamping mechanism which can be telescopically matched with the screens of different sizes and fix the screens. The device solves the problems that in outdoor large screen hoisting construction, ground congestion is likely to be caused, and screens of different sizes are not likely to be hoisted; the construction efficiency of screen hoisting can be improved, the influence of construction on a road is reduced, and the construction safety is enhanced.

Description

Technical Field

[0001] The present application relates to the field of screen hoisting, and in particular to a hoisting device for installing a large screen. Background Art

[0002] In modern production and life, more and more LED large screens are installed on the facades of buildings such as shopping malls, stadiums, high-speed rail platforms, etc. for advertising or information disclosure. The installation environment of outdoor large screens is relatively complex, and the installation locations are mostly core locations with large traffic flow and heavy traffic pressure. Therefore, it is necessary to install LED large screens safely and reliably. Existing outdoor LED large screens are mostly hoisted by traditional cranes. This method will occupy a large area of ​​ground space, which is easy to cause traffic congestion or affect other ground preparations. At the same time, the use of a crane to install the large screen requires a customized hoisting frame for the screen, which increases the construction cost. If a customized frame is not used, the hoisting points will be close, and the screen will be easily affected by wind and deflected at high altitude, which is not conducive to the installation workers on the back of the screen to operate, increasing the safety risk. For example, a lifting device for installing a large billboard with a publication number of CN212832471U includes a lifting device body, a roller connected to the bottom of the lifting device body, and four rollers, a lifting rod fixed to the top of the lifting device body, and a controller fixed to the top of the lifting rod, a reversing motor is provided inside the controller, and a telescopic rod I is fixed to the bottom of the controller, and a connecting block I is fixed to the bottom of the telescopic rod I, and the connecting block I is connected to the telescopic rod II on the left side, and the connecting block I is connected to the telescopic rod III on the right side, and the connecting block I is connected to the telescopic rod IV at the bottom end, and the connecting block II is connected to the telescopic rod V on the left side, and the connecting block II is connected to the telescopic rod VI on the right side. The above-mentioned lifting device can only prevent the screen from shaking in the air, and it is not convenient to change the distance between the screen and the wall and reduce the occupation of the ground space. Therefore, the present application designs a lifting device for installing a large screen that can adapt to screens of different sizes and change the distance between the screen and the wall. Utility Model Content

[0003] The purpose of the utility model is to provide a lifting device for installing a large screen, aiming to solve the above-mentioned problems.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting device for installing a large screen comprises a telescopic frame, a fixer, a clamping mechanism and a lifting mechanism that changes the lifting distance by sliding a thread; the fixer is connected to the telescopic frame by bolts, the upper part of the clamping mechanism is plugged into the lower end of the lifting mechanism, a first threaded rod is rotatably arranged in the telescopic frame, two groups of threaded sleeves are sleeved on both sides of the first threaded rod, the internal threads of the two groups of threaded sleeves are in opposite directions, the lower part of the threaded sleeve is bolted to the lifting mechanism, a second threaded rod is rotatably arranged at both ends of the telescopic frame, the second threaded rod is threadedly connected to the telescopic frame and passes through the telescopic frame to abut against the wall, the first threaded rod drives the two groups of threaded sleeves to move relative to each other by rotation, and thus changes the lifting distance of the lifting mechanism, the second threaded rod drives the telescopic frame to move by rotation, and thus changes the distance between the lifting mechanism and the wall, so that the distance between the screen being hoisted and the wall can be changed according to actual needs on site, leaving construction space for operators.

[0005] Furthermore, the telescopic frame includes an outer column, an inner column, a protective cover, a mounting plate and a second motor; one end of the outer column is fixedly connected to the mounting plate, the inner column sleeve is placed inside the outer column and extends to the end of the outer column away from the mounting plate, the inner column extends out of the outer column and is bolted to the protective cover, both sides of the protective cover are threadedly connected to the second threaded rod, the second threaded rod is fixedly connected to the output end of the second motor, and the other end of the second motor is bolted to the wall. The inner column can drive the lifting mechanism away from or close to the wall to change the distance between the screen and the wall. The fixer includes a fixed column, a screw rod, a rotating handle and a pressing plate. One end of the fixed column is fixedly connected to the outer column on the outside of the wall, the screw rod passes through the fixed column and is rotatably connected to the inner side of the wall with the pressing plate, and the rotating handle is fixedly connected to the end of the screw rod away from the pressing plate. The telescopic frame is fixed on both sides of the wall, further enhancing the stability of the device.

[0006] Furthermore, the clamping mechanism includes a rectangular hanging ring, an upper frame, a side frame and an auxiliary handle. The side frame is a U-shaped structure. The upper part of the side frame is slidably arranged inside the upper frame. The rectangular hanging ring is fixedly connected to the upper part of the side frame. The auxiliary handle is rotatably connected to the lower part of the side frame and has a limit. The side frame can slide to change the spacing to adapt to screens of different sizes. A placement groove for placing the screen is provided on the inner side of the middle part of the side frame, and a limit block is also provided on the inner side of the lower part of the side frame to prevent the auxiliary handle from coming out. The screen can be plugged into the clamping mechanism, and the lower part of the screen is lifted to prevent the screen from being damaged by the hoisting. The auxiliary handle extends into the side frame and passes through the limit block. A spring is slidably arranged at one end of the auxiliary handle extending into the side frame, and the other end of the spring is fixedly connected to the limit block. The two sides of the screen can be limited by the auxiliary handle to strengthen the fixation of the screen, and it is convenient for the operator to operate.

[0007] Furthermore, the lifting mechanism includes a shell, a hoist, a lifting rope and a hook. The shell is connected to the threaded sleeve bolt, the hoist is connected to the inner bolt of the shell, the lifting rope sleeve is placed on the hoist turntable, the lower part of the lifting rope is tied and connected to the hook, and the hook extends below the shell. The device allows the screen to be directly hoisted from the height of the wall, reducing the occupation of the ground space. A lock is provided on one side of the hook, and the hook is plugged into the rectangular lifting ring. This ensures that the hook will not be unhooked due to wind disturbance during the hoisting process.

[0008] Compared with the prior art, it has the following beneficial effects:

[0009] The utility model provides a lifting device for installing a large screen. The second threaded rod is used in conjunction with a protective cover to change the distance between the lifting mechanism and the wall, so that an adjustable distance is reserved between the wall and the screen to facilitate installation and construction by operators. The first threaded rod is provided in conjunction with a threaded sleeve with opposite thread directions, so that the lifting mechanism can perform lifting operations on screens of different sizes and reduce the occupation of ground space. The retractable side frame is provided and the auxiliary handle cooperates to strengthen the locking of the clamping mechanism on the screen and reduce the disturbance effect it receives in mid-air. It can effectively reduce traffic congestion at the installation site, improve construction efficiency, increase the safety of installation and construction, and make the range of types of hoisted screens wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an overall schematic diagram of a lifting device for installing a large screen according to the utility model;

[0011] Figure 2 This is a schematic diagram of a fixing device of a lifting device for installing a large screen according to the utility model;

[0012] Figure 3 This is a cross-sectional view of a lifting device for installing a large screen according to the utility model;

[0013] Figure 4 A schematic diagram of a hook of a lifting device for installing a large screen according to the utility model;

[0014] Figure 5 This is a schematic diagram of a clamping device of a lifting device for large screen installation according to the utility model;

[0015] Figure 6 The utility model is a schematic diagram of an auxiliary handle of a lifting device for installing a large screen.

[0016] In the figure: 1-telescopic frame; 11-outer column; 12-inner column; 13-protective cover; 14-mounting plate; 15-motor; 2-fixer; 21-fixed column; 22-screw rod; 23-rotating handle; 24-pressing plate; 3-clamping mechanism; 31-rectangular lifting ring; 32-upper frame; 33-side frame; 331-placing groove; 332-limiting block; 333-spring; 34-auxiliary handle; 4-lifting mechanism; 41-housing; 42-hoist; 43-lifting rope; 44-hook; 441-locker; 5-first threaded rod; 6-threaded sleeve; 7-second threaded rod. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figures 1 to 5 As shown, the utility model provides the following technical solutions: a lifting device for installing a large screen, comprising a telescopic frame 1, a fixer 2, a clamping mechanism 3 and a lifting mechanism 4 that changes the lifting spacing by sliding a thread; the fixer 2 is connected to the telescopic frame 1 by bolts, and the upper part of the clamping mechanism 3 is plugged into the lower end of the lifting mechanism 4; a first threaded rod 5 is rotatably arranged in the telescopic frame 1, and two groups of threaded sleeves 6 are sleeved on both sides of the first threaded rod 5, and the internal threads of the two groups of threaded sleeves 6 are in opposite directions, and the lower part of the threaded sleeve 6 is bolted to the lifting mechanism 4, and second threaded rods 7 are rotatably arranged at both ends of the telescopic frame 1, and the second threaded rod 7 is threadedly connected to the telescopic frame 1 and passes through the telescopic frame 1 to abut against the wall, the first threaded rod 5 drives the two groups of threaded sleeves 6 to move relative to each other by rotation, thereby changing the lifting spacing of the lifting mechanism 4, and the second threaded rod 7 drives the telescopic frame 1 to move by rotation, thereby changing the spacing between the lifting mechanism 4 and the wall.

[0019] As another example, Figure 1 and Figure 2As shown, the telescopic frame 1 includes an outer column 11, an inner column 12, a protective cover 13, a mounting plate 14 and a motor 15; one end of the outer column 11 is fixedly connected to the mounting plate 14, and the device can be installed and fixed on the wall through the mounting holes set on the mounting plate 14. The inner column 12 is placed inside the outer column 11 and extends to the end of the outer column 11 away from the mounting plate 14. The inner column 12 extends out of the outer column 11 and is bolted to the protective cover 13, so that the inner column 12 can slide inside the outer column 11, thereby telescoping. The two sides of the protective cover 13 are threadedly connected to the second threaded rod 7, and the second threaded rod 7 is fixedly connected to the output end of the motor 15, and the other end of the motor 15 is bolted to the wall. The contraction motor 15 drives the second threaded rod 7 to rotate, driving the protective cover 13 to move, and then the telescopic frame 1 drives the lifting mechanism 4 to move, changing the distance between the screen being hoisted and the wall.

[0020] See also Figure 2 The fixer 2 includes a fixed column 21, a screw rod 22, a rotating handle 23 and a pressing plate 24. One end of the fixed column 21 is fixedly connected to the outer column 11 on the outside of the wall. The screw rod 22 passes through the fixed column 21 and is rotatably connected to the pressing plate 24 on the inside of the wall. The rotating handle 23 is fixedly connected to the end of the screw rod 22 away from the pressing plate 24. By rotating the rotating handle 23, the screw rod 22 can be driven to rotate and the pressing plate 24 can be displaced to compress and lock the wall, further strengthening the fixation of the device to the wall.

[0021] As another example, Figure 5 and Figure 6 As shown, the clamping mechanism 3 includes a rectangular hanging ring 31, an upper frame 32, a side frame 33 and an auxiliary handle 34. The side frame 33 is a U-shaped structure and is provided with two groups. The upper part of the side frame 33 is slidably arranged inside the upper frame 32, so that the side frame 33 can slide inside the upper frame 32, thereby changing the distance between the two groups of side frames 33 to adapt to screens of different sizes. The rectangular hanging ring 31 is fixedly connected to the upper part of the side frame 33 and can always maintain the position on both sides of the clamping mechanism 3 with the displacement of the side frame 33 to prevent the lifting point from being close to the middle and causing the lifting force to be concentrated. The auxiliary handle 34 is rotatably connected to the lower part of the side frame 33 and has a limit position.

[0022] See also Figure 5 and Figure 6 A placement slot 331 for placing the screen is provided on the inner side of the middle of the side frame 33, and a stopper 332 is provided on the inner side of the lower part of the side frame 33 to prevent the auxiliary handle 34 from coming out. By sliding the side frame 33 to a suitable spacing for the screen to be hoisted, placing the screen into the placement slot 331, and rotating the auxiliary handle 34 to limit the screen, the hoisting can begin.

[0023] See also Figure 6The auxiliary handle 34 extends into the side frame 33 and passes through the stop block 332. A spring 333 is slidably arranged at one end of the auxiliary handle 34 extending into the side frame 33, and the other end of the spring 333 is fixedly connected to the stop block 332. The auxiliary handle 34 is provided with four groups. The auxiliary handle 34 is pulled out and rotated to a vertical direction, and the elastic potential energy accumulated by the spring 333 is used to assist in fixing screens of different sizes.

[0024] As another example, Figure 1 , Figure 3 and Figure 4 As shown, the lifting mechanism 4 includes a housing 41, a hoist 42, a hoisting rope 43 and a hook 44. The housing 41 is bolted to the threaded sleeve 6, the hoist 42 is bolted to the inside of the housing 41, the hoisting rope 43 is sleeved on the turntable of the hoist 42, the lower part of the hoisting rope 43 is tied to the hook 44, and the hook 44 extends below the housing 41. The hoisting rope 43 is passed through the perforation on the upper part of the hook 44 and tied. The hoisting rope 43 drives the hook 44 to rise or fall through the rotation of the hoist 42. With the rotation of the first threaded rod 5, the two threaded sleeves 6 with opposite thread directions are driven to move, thereby changing the distance between the two hooks 44 to adapt to screens of different sizes.

[0025] See also Figure 4 A locker 441 is provided on one side of the hook 44, and the hook 44 is plugged into the rectangular ring 31. By inserting the hook 44 into the opening of the rectangular ring 31, the hook 44 is rotated so that the protrusion on the hook 44 is inserted into the locker 441 for locking.

[0026] Working principle: When in use, first fix the telescopic frame 1 to the outside of the wall through the mounting plate 14, then rotate and displace the rotating handle 23 on the inside of the wall so that the pressure plate 24 presses the wall for auxiliary fixation, adjust the telescopic side frame 33 on the ground to the size corresponding to the screen to be hoisted, put the screen into the placement slot 331, then pull out the auxiliary handle 34 and rotate it to the vertical direction to auxiliary fix the screen. The rotation of the first threaded rod 5 drives the relative displacement of the two sets of threaded sleeves 6, so that the hook 44 moves to be coaxial with the rectangular lifting ring 31, and the hook 44 is inserted into the rectangular lifting ring 31 and locked; the lifting can be carried out by rotating the hoist 42 and pulling the lifting rope 43. After lifting to the specified position, start the motor 15 to drive the second threaded rod 7 to rotate so that the screen is close to or away from the wall. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for large screen installation, characterized in that , comprising a telescopic frame (1), a fixing device (2), a clamping mechanism (3) and a lifting mechanism (4) for changing the lifting spacing by threaded sliding; the fixing device (2) is connected to the telescopic frame (1) by bolts, and the upper part of the clamping mechanism (3) is plugged into the lower end of the lifting mechanism (4); a first threaded rod (5) is rotatably arranged inside the telescopic frame (1), two groups of threaded sleeves (6) are sleeved on both sides of the first threaded rod (5), the internal threads of the two groups of threaded sleeves (6) are in opposite directions, and the lower part of the threaded sleeve (6) is bolted to the lifting mechanism (4); second threaded rods (7) are rotatably arranged at both ends of the telescopic frame (1), the second threaded rod (7) is threadedly connected to the telescopic frame (1) and passes through the telescopic frame (1) to abut against the wall, the first threaded rod (5) drives the two groups of threaded sleeves (6) to move relative to each other by rotation, thereby changing the lifting spacing of the lifting mechanism (4), and the second threaded rod drives the telescopic frame (1) to move by rotation, thereby changing the spacing between the lifting mechanism (4) and the wall.

2. The lifting device for large screen installation according to claim 1 is characterized in that: The telescopic frame (1) comprises an outer column (11), an inner column (12), a protective cover (13), a mounting plate (14) and a second motor (15); one end of the outer column (11) is fixedly connected to the mounting plate (14); the inner column (12) is sleeved inside the outer column (11) and extends to an end of the outer column (11) away from the mounting plate (14); one end of the inner column (12) extends out of the outer column (11) and is bolted to the protective cover (13); both sides of the protective cover (13) are threadedly connected to the second threaded rod (7); the second threaded rod (7) is fixedly connected to the output end of the second motor (15); and the other end of the second motor (15) is bolted to the wall.

3. The lifting device for large screen installation according to claim 2 is characterized in that: The fixer (2) comprises a fixing column (21), a screw rod (22), a rotating handle (23) and a pressing plate (24); one end of the fixing column (21) is fixedly connected to the outer column (11) on the outside of the wall; the screw rod (22) passes through the fixing column (21) and is rotatably connected to the pressing plate (24) on the inside of the wall; the rotating handle (23) is fixedly connected to one end of the screw rod (22) away from the pressing plate (24).

4. The lifting device for large screen installation according to claim 3 is characterized in that: The clamping mechanism (3) comprises a rectangular hanging ring (31), an upper frame (32), a side frame (33) and an auxiliary handle (34); the side frame (33) is a U-shaped structure; the upper portion of the side frame (33) is slidably arranged inside the upper frame (32); the rectangular hanging ring (31) is fixedly connected to the upper portion of the side frame (33); and the auxiliary handle (34) is rotatably connected to the lower portion of the side frame (33) and has a limit position.

5. The lifting device for installing a large screen according to claim 4, characterized in that: A placement groove (331) for placing a screen is provided on the inner side of the middle part of the side frame (33), and a limiting block (332) for preventing the auxiliary handle (34) from falling out is also provided on the inner side of the lower part of the side frame (33).

6. The lifting device for large screen installation according to claim 5, characterized in that: The auxiliary handle (34) extends into the interior of the side frame (33) and passes through the limit block (332); one end of the auxiliary handle (34) extending into the side frame (33) is slidably provided with a spring (333); the other end of the spring (333) is fixedly connected to the limit block (332).

7. The lifting device for installing a large screen according to claim 6, characterized in that: The lifting mechanism (4) comprises an outer shell (41), a hoist (42), a lifting rope (43) and a hook (44); the outer shell (41) is bolted to the threaded sleeve (6); the hoist (42) is bolted to the inside of the outer shell (41); the lifting rope (43) is sleeved on a turntable of the hoist (42); the lower part of the lifting rope (43) is tied and connected to the hook (44); and the hook (44) extends below the outer shell (41).

8. The lifting device for installing a large screen according to claim 7, characterized in that: A locker (441) is provided on one side of the lifting hook (44), and the lifting hook (44) is plugged into the rectangular lifting ring (31).

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