Multi-lifting-point movable lifting rod for theater

Abstract

The utility model relates to the field of movable suspenders, and particularly discloses a multi-suspension-point movable suspender for a theater, which comprises a main cross beam, the lower end of the main cross beam is fixedly connected with a translation frame, the lower end of the translation frame is provided with winding assemblies at equal intervals, and the left side of the winding assembly on the leftmost side is provided with a motor. Steel cables are movably connected to the lower portions of the winding assemblies, early warning assemblies are movably connected to the middles of the steel cables, connecting rods are fixedly connected between the two early warning assemblies, fixing blocks are fixedly connected to the bottom ends of the steel cables, hanging rods are fixedly connected to the lower ends of the fixing blocks, and limiting cylinders are fixedly connected to the lower ends of the connecting rods. The limiting cylinder is provided with a plurality of sections, and the adjacent sections can be contracted, so that the steel cable can be prevented from quickly descending when a stage accident occurs and the suspender falls down, the steel cable can be controlled when the steel cable moves or swings due to the accident, the danger is avoided, and the suspender is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the field of mobile hanging rods, in particular to a multi-hanging-point mobile hanging rod for theaters. Background Technique

[0002] When watching a stage play performance, it can be seen that the background cloth changes with the plot, and these changes are all completed by hanging rods.

[0003] Although the prior art has solved the problems that the hanging rod can be multi-point suspended and moved during the performance, sometimes a performance requires multiple scenes and dynamic backgrounds. When the hanging rod is in use during the performance, due to external reasons or technical failures, the hanging rod may fall, resulting in casualties. Moreover, multiple hanging rods are required to cooperate to complete the task, resulting in low utilization rate of a single hanging rod. This means that the device does not have the ability of an autonomous emergency stop device in case of an accident.

[0004] Therefore, a multi-hanging-point mobile hanging rod for theaters is specifically proposed. Summary of the Invention

[0005] The purpose of the utility model is to provide a multi-hanging-point mobile hanging rod for theaters, which can prevent the steel cable from descending rapidly when a stage accident occurs and the hanging rod falls, and can also control the steel cable when the steel cable moves or swings due to an accident, avoiding the occurrence of danger, making the hanging rod safer and more reliable, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A multi-hanging-point mobile hanging rod for theaters, including a main cross beam, the lower end of the main cross beam is fixedly connected with a translation frame, the lower end of the translation frame is equidistantly provided with wire winding components, a motor is arranged on the left side of the leftmost wire winding component, the lower parts of the wire winding components are all movably connected with steel cables, a warning component is movably connected to the middle of the steel cables, a connecting rod is fixedly connected between the two warning components, the bottom end of the steel cable is fixedly connected with a fixing block, and the lower end of the fixing block is fixedly connected with a hanging rod;

[0007] The warning component includes boxes fixedly connected to the left and right sides of the connecting rod, the upper and lower end faces inside the boxes are both fixedly connected with fixing frames, a pulley is movably connected between the two fixing frames, a fixing shaft is movably connected to the middle of the pulley, a limiting groove is opened on the left end face of the left fixing frame, and a matching disc is movably connected to the front end of the limiting groove through the fixing shaft.

[0008] Preferably, limiting blocks are fixedly connected to the front ends of the matching discs, clamping blocks are equidistantly movably connected to the front ends of the matching discs, and the clamping blocks are all located outside the limiting blocks. A matching column is fixedly connected to the lower part inside the clamping blocks, a spring is movably connected to the outside of the matching column, and the steel cables are respectively wound around the two pulleys four times.

[0009] Preferably, the wire winding assembly includes rollers movably connected to the upper end of the translation frame. Support plates are movably connected to the left and right sides of the two rollers. The lower end of the support plate is fixedly connected to a connecting plate. The middle of the upper end of the connecting plate is fixedly connected to a support block. A first transmission shaft is movably connected to the middle of the upper part of the support block, and the first transmission shaft penetrates through the support block. A gear is fixedly connected between the two support blocks on the first transmission shaft. A rack is fixedly connected to the lower end of the translation frame. A wire winding drum is movably connected to the lower end of the connecting plate. A motor is fixedly connected to the left side of the wire winding drum, and the wire winding drum is coaxially connected to the output end of the motor. A coupling is fixedly connected to the right side of the wire winding drum, and a second transmission shaft is fixedly connected to the right side of the coupling.

[0010] Preferably, limit cylinders are fixedly connected to the lower ends of the connecting rods. The limit cylinders are multi-section, and adjacent sections can be contracted with each other.

[0011] Preferably, the motor is connected to each wire winding assembly through the second transmission shaft and the coupling. The wire winding assemblies and the motor at the lower part of the translation frame can move parallel along the direction of the translation frame through the meshing between the gears and the rack.

[0012] Preferably, the steel cables correspond one by one to a plurality of wire winding assemblies arranged at the lower end of the translation frame, and all pass through the limit cylinders and the fixed frames.

[0013] Preferably, the rotation directions of the two pulleys in the box are opposite.

[0014] Preferably, the outer diameter of the clamping block under normal circumstances is smaller than the inner diameter of the limit groove, and the centrifugal force received by the clamping block during rotation is greater than the elastic force of the spring.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. For this multi-point mobile hanging rod for theaters, by installing components such as an early warning component, a wire winding component, and pulleys, in the case of an accident where the steel cable causes the hanging rod to fall, the steel cable can be tightened in time, making the hanging rod safer and more reliable.

[0017] 2. For this multi-point mobile hanging rod for theaters, by installing components such as limit cylinders and connecting rods, when the hanging rod moves or the steel cable slips, it can ensure that the steel cable will never swing, further ensuring the safety of the hanging rod and making the steel cable more controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structural view of the present invention;

[0020] Figure 2 of the present invention Figure 1 is the enlarged view of A therein;

[0021] Figure 3 is the structural view of the connecting rod and the limiting cylinder of the present invention being lowered;

[0022] Figure 4 of the present invention Figure 3 is the enlarged view of B therein;

[0023] Figure 5 of the present invention Figure 4 is the enlarged view of C therein.

[0024] Explanation of reference numerals:

[0025] 1, main crossbeam; 11, translation frame; 2, wire winding assembly; 21, wire winding drum; 22, connecting plate; 23, gear; 231, first transmission shaft; 232, support block; 24, rack; 25, roller; 251, support plate; 3, motor; 31, second transmission shaft; 32, coupling; 4, warning assembly; 41, box body; 42, fixing frame; 421, limiting groove; 43, pulley; 44, mating disc; 441, limiting block; 45, clamping block; 451, mating column; 46, spring; 47, fixed shaft; 5, connecting rod; 51, limiting cylinder; 6, fixing block; 7, steel cable; 8, suspension rod. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Please refer to Figure 1 , Figure 2 , Figure 4 , the present invention provides a technical solution:

[0028] A multi-hoisting-point moving boom for a theater, comprising a main beam 1, a translation frame 11 is fixedly connected to the lower end of the main beam 1, wire winding assemblies 2 are equidistantly arranged at the lower end of the translation frame 11, a motor 3 is arranged on the left side of the leftmost wire winding assembly 2, steel cables 7 are movably connected to the lower parts of the wire winding assemblies 2, a warning assembly 4 is movably connected to the middle of the steel cable 7, a connecting rod 5 is fixedly connected between the two warning assemblies 4, a fixing block 6 is fixedly connected to the bottom end of the steel cable 7, and a boom 8 is fixedly connected to the lower end of the fixing block 6;

[0029] The warning assembly 4 includes boxes 41 fixedly connected to the left and right sides of the connecting rod 5, fixing frames 42 are fixedly connected to the upper and lower end faces inside the boxes 41, a pulley 43 is movably connected between the two fixing frames 42, a fixing shaft 47 is movably connected to the middle of the pulley 43, a limiting groove 421 is formed in the left end face of the left fixing frame 42, a matching disc 44 is movably connected to the front end of the limiting groove 421 through the fixing shaft 47, limiting blocks 441 are fixedly connected to the front ends of the matching disc 44, clamping blocks 45 are equidistantly movably connected to the front ends of the matching disc 44, and the clamping blocks 45 are all located outside the limiting blocks 441, a matching column 451 is fixedly connected to the lower part inside the clamping block 45, a spring 46 is movably connected to the outside of the matching column 451, and the steel cables 7 are respectively wound around the two pulleys 43 for four turns;

[0030] The wire winding assembly 2 includes rollers 25 movably connected to the upper end of the translation frame 11, support plates 251 are movably connected to the left and right sides of the two rollers 25, a connecting plate 22 is fixedly connected to the lower end of the support plate 251, a support block 232 is fixedly connected to the middle of the upper end of the connecting plate 22, a first transmission shaft 231 is movably connected to the middle of the upper part of the support block 232, and the first transmission shaft 231 penetrates through the support block 232, a gear 23 is fixedly connected between the two support blocks 232 on the first transmission shaft 231, a rack 24 is fixedly connected to the lower end of the translation frame 11, a wire winding drum 21 is movably connected to the lower end of the connecting plate 22, a motor 3 is fixedly connected to the left side of the wire winding drum 21, and the wire winding drum 21 is coaxially connected to the output end of the motor 3, a coupling 32 is fixedly connected to the right side of the wire winding drum 21, a second transmission shaft 31 is fixedly connected to the right side of the coupling 32, the steel cables 7 correspond one by one to a plurality of wire winding assemblies 2 arranged at the lower end of the translation frame 11, and all pass through the limiting cylinder 51 and the fixing frame 42; the two pulleys 43 in the box 41 rotate in opposite directions, the outer diameter of the clamping block 45 is smaller than the inner diameter of the limiting groove 421 under normal conditions, and the centrifugal force received by the clamping block 45 during rotation is greater than the elastic force of the spring 46.

[0031] By adopting the above technical solution, first, the entire hanging bracket is fixed at the required position through the main crossbeam 1. When the suspension rod needs to be lifted or lowered, the output shaft of the motor 3 rotates at this time, driving the wire winding drum 21 to rotate. When the wire winding drum 21 rotates to release more steel cables 7, the steel cables 7 will continuously descend. Then, it is connected to the suspension rod 8 through the warning component 4 and after the warning component 4. At this time, the suspension rod 8 descends with the descent of the steel cables 7. Conversely, the steel cables 7 are tightened to make the suspension rod 8 rise. In case of technical failures or stage accidents, the suspension rod 8 will fall. At this time, the fixing block 6 on the suspension rod 8 is fixedly connected to the steel cable 7. When the suspension rod 8 drives the steel cable 7 to descend rapidly, the steel cable 7 passes through the box body 41. At this time, inside the box body 41, the steel cable 7 winds around the pulley 43 at the lower end of the interior of the box body 41 in a clockwise direction, and then winds around the pulley 43 at the upper end of the interior of the box body 41 in a counterclockwise direction. When the steel cable 7 moves rapidly downward, the steel cable 7 drives the two pulleys 43 to rotate. The pulley 43 will drive the matching disc 44 to rotate. Due to the principle of centrifugal force, the clamping block 45 connected to the outer end of the matching disc 44 by bolts makes a circular motion around the bolt as the axis towards the outer end of the matching disc 44. At this time, the elastic force of the spring 46 on the matching column 451 inside the clamping block 45 is less than the centrifugal force, and the clamping block 45 will touch the limit groove 421 when swinging to the maximum position. The limit groove 421 will prevent the matching disc 44 from continuing to rotate, and the matching disc 44 will stop driving the pulley 43 to stop rotating. At this time, the steel cables 7 on the two pulleys 43 also stop moving due to the pulley 43, so as to achieve the function of automatically stopping the descent of the steel cables 7 in time when the steel cables 7 slip. When the failure or accident is resolved, first, the two pulleys 43 inside the box body 41 are rotated along the opposite directions of their respective rotations. At this time, the clamping block 45 rotates in reverse and exits the limit groove 421. Because the elastic force of the spring 46 is greater than the force received by the clamping block 45 under normal circumstances, the spring 46 will drive the clamping block 45 back to the initial position, thus facilitating another emergency stop when an accident occurs next time.

[0032] Specifically, as Figure 2 , Figure 3 shown, the lower ends of the connecting rods 5 are fixedly connected with limiting cylinders 51. The limiting cylinders 51 are multi - jointed, and adjacent joints can be contracted. The motor 3 is connected to each wire winding component 2 through the second transmission shaft 31 and the coupling 32. The wire winding component 2 at the lower part of the translation frame 11 and the motor 3 can both move parallel along the direction of the translation frame 11 through the meshing between the gear 23 and the rack 24.

[0033] By adopting the above technical solution, when the boom 8 moves horizontally or an accident occurs, the steel cable 7 on the boom 8 will swing or descend along one side direction, and the things fixed on the boom will swing accordingly, affecting the normal use of the boom. At this time, the warning component 4 can be lowered to limit the swing of the steel cable 7 through the warning component 4. When the boom 8 needs to move horizontally, when the gear 23 rotates, it will rotate along the direction of the translation frame 11. At this time, the connecting plate 22 drives the support plate 251 and the roller 25 to move. The roller 25 will press on the translation frame 11 to make a translation movement. At this time, all the components at the lower end of the connecting plate 22 move together in translation, so as to achieve the translation effect. A number of wire winding components 2 are provided on the entire boom, and each wire winding drum 21 is coaxially connected to the 31 second transmission shaft through the 32 coupling, so that each wire winding component 2 moves synchronously, and each gear 23 is coaxially connected through the first transmission shaft 231 to achieve the synchronous effect.

[0034] Working principle: The steel cable 7 is fixedly connected by the fixing block 6 on the boom 8. When the boom 8 drives the steel cable 7 to descend rapidly, the steel cable 7 passes through the box body 41. At this time, inside the box body 41, the steel cable 7 winds clockwise around the pulley 43 at the lower end inside the box body 41, and then winds counterclockwise around the pulley 43 at the upper end inside the box body 41. When the steel cable 7 moves rapidly downward, the steel cable 7 drives the two pulleys 43 to rotate. The pulley 43 will drive the matching disc 44 to rotate. Due to the principle of centrifugal force, the clamping block 45 connected to the outer end of the matching disc 44 by bolts makes a circular motion with the bolt as the axis towards the outer end of the matching disc 44. At this time, the elastic force of the spring 46 on the matching column 451 inside the clamping block 45 is less than the centrifugal force, and the clamping block 45 will touch the limit groove 421 when swinging to the maximum position. The limit groove 421 will prevent the matching disc 44 from continuing to rotate, and the matching disc 44 will stop driving the pulley 43 to stop rotating. At this time, the steel cable 7 on the two pulleys 43 also stops moving due to the pulley 43, so as to achieve the effect of automatically stopping in time when the steel cable 7 slips, and further ensure the safety of the boom and make the steel cable 7 more controllable.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-hoisting-point movable hanging rod for a theater, comprising a main cross beam (1), characterized in that: The lower end of the main cross beam (1) is fixedly connected to a translation frame (11). The lower end of the translation frame (11) is equidistantly provided with wire winding assemblies (2). A motor (3) is arranged on the left side of the leftmost wire winding assembly (2). A plurality of steel cables (7) are movably connected to the lower parts of the wire winding assemblies (2). A warning assembly (4) is movably connected to the middle of the steel cables (7) on the left and right sides. A connecting rod (5) is fixedly connected between the two warning assemblies (4). The bottom end of the steel cable (7) is fixedly connected to a fixing block (6). The lower end of the fixing block (6) is fixedly connected to a suspension rod (8). The warning assembly (4) includes boxes (41) fixedly connected to the left and right sides of the connecting rod (5). Fixed frames (42) are fixedly connected to the upper and lower end faces inside the boxes (41). A pulley (43) is movably connected between the two fixed frames (42). A fixed shaft (47) is movably connected to the middle of the pulley (43). A limiting groove (421) is formed in the left end face of the left fixed frame (42). A matching disc (44) is movably connected to the front end of the limiting groove (421) through the fixed shaft (47).

2. The multi-point movable hanging boom for a theater according to claim 1, wherein: Limiting blocks (441) are fixedly connected to the front ends of the matching discs (44). Clamping blocks (45) are equidistantly and movably connected to the front ends of the matching discs (44), and the clamping blocks (45) are all located outside the limiting blocks (441). A matching column (451) is fixedly connected to the lower part inside the clamping blocks (45). A spring (46) is movably connected to the outside of the matching column (451). The steel cables (7) are respectively wound around the two pulleys (43) for four turns.

3. A multi-hoisting-point movable hanging rod for a theater according to claim 1, characterized in that: The wire winding assembly (2) includes rollers (25) movably connected to the upper end of the translation frame (11). Support plates (251) are movably connected to the left and right sides of the two rollers (25). A connecting plate (22) is fixedly connected to the lower end of the support plate (251). A support block (232) is fixedly connected to the middle of the upper end of the connecting plate (22). A first transmission shaft (231) is movably connected to the middle of the upper part of the support block (232), and the first transmission shaft (231) penetrates through the support block (232). A gear (23) is fixedly connected to the surface of the first transmission shaft (231) between the two support blocks (232). A rack (24) is fixedly connected to the lower end of the translation frame (11). A wire winding drum (21) is movably connected to the lower end of the connecting plate (22). A motor (3) is fixedly connected to the left side of the wire winding drum (21), and the wire winding drum (21) is coaxially connected to the output end of the motor (3). A coupling (32) is fixedly connected to the right side of the wire winding drum (21). A second transmission shaft (31) is fixedly connected to the right side of the coupling (32).

4. A multi-point moving hanging boom for a theater according to claim 1, characterized in that: Limiting cylinders (51) are equidistantly and fixedly connected to the lower end of the connecting rod (5). The limiting cylinders (51) are multi-section, and the adjacent sections can be contracted with each other.

5. The multi-point movable hanging boom for a theater according to claim 3, wherein: The motor (3) is connected to each winding assembly (2) through a second transmission shaft (31) and a coupling (32). The winding assembly (2) at the lower part of the translation frame (11) and the motor (3) can both move parallel along the direction of the translation frame (11) through the meshing between a gear (23) and a rack (24).

6. The multi-hoisting-point moving hanging rod for a theater according to claim 5, characterized in that: The steel cables (7) correspond one by one to a plurality of winding assemblies (2) arranged at the lower end of the translation frame (11), and all pass through a limiting cylinder (51) and a fixing frame (42).

7. The multi-point moving hanging boom for a theater according to claim 2, wherein: The rotation directions of the two pulleys (43) in the box body (41) are opposite to each other.

8. The multi-hanging-point moving hanging rod for a theater according to claim 2, characterized in that: Under normal circumstances, the outer diameter of the clamping block (45) is smaller than the inner diameter of the limiting groove (421), and the centrifugal force received by the clamping block (45) during rotation is greater than the elastic force of the spring (46).

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