Light motion adjustment device

Abstract

The present invention relates to the field of lighting control, and in particular, to a lighting motion adjustment device, comprising a frame, a lamp being provided on the frame, the lamp being connected to a driven gear, the driven gear being engaged with a driving gear, the driven gear being connected to a load shaft, the axis of the load shaft being a horizontal line, at least two torque assemblies being provided on the load shaft for applying a unidirectional torque to the load shaft, the torque assembly comprising a ratchet and a protective shell, the load shaft being fixedly connected to the ratchet, the protective shell being rotatably connected to the load shaft, a sliding rod being provided on the protective shell, the sliding rod being slidably connected to the protective shell, and a first driving assembly being provided on the protective shell for driving the sliding rod to press against or separate the ratchet teeth of the ratchet; the purpose of the present invention is to overcome the deficiencies of the prior art and provide a lighting motion adjustment device, which can reduce the influence of the tooth side clearance D on the stroke of the gear transmission.

Description

Technical Field

[0001] The present invention relates to the field of lighting control, and in particular to a lighting motion regulating device. Background Art

[0002] The stage is the space in a theater where actors perform. It allows the audience to focus their attention on the actors' performance and achieve an ideal viewing experience. To facilitate the audience's enjoyment of the performance, it is usually necessary to control the lighting to focus on the performers' position to enhance the audience's viewing experience.

[0003] Those skilled in the art have conducted extensive research on this topic. Among them, patent publication number "CN112040616B" is titled "An Automatic Tracking Device for Stage Actors," which discloses an automatic tracking device for tracking an actor's position. The device detects the actor's position through a camera, and is driven by a servo motor, which utilizes a gear transmission to drive the stage lights to illuminate the actor's position. This method can achieve tracking of the actor's position. However, when using a gear transmission, in order to form a lubricating oil film between the meshing tooth profiles and prevent the gears from getting stuck due to friction, heat, and expansion, a gap must be left between the tooth profiles. This gap is called the tooth side clearance. The presence of the tooth side clearance causes a period of idle travel during the forward and reverse switching process of the gears. As the number of transmission gears increases, this idle travel will continue to accumulate, causing the actual travel of the drive motor to drive the terminal gear to be less than the expected travel, thereby preventing the light from illuminating the preset position. Therefore, how to design a light motion adjustment device that can reduce the impact of the tooth side clearance on the travel of the gear transmission still requires continuous research. Summary of the Invention

[0004] In view of this, an object of the present invention is to overcome the deficiencies of the prior art and provide a light motion adjustment device that can reduce the influence of the tooth side clearance D on the stroke of the gear transmission.

[0005] In order to solve the above technical problems, the technical solution of the present invention is:

[0006] A light motion adjustment device, comprising a frame, a lamp being provided on the frame, the lamp being connected to a driven gear, the driven gear being meshed with a driving gear, the driven gear being connected to a load shaft, the axis of the load shaft being a horizontal line, the load shaft being provided with at least two torque assemblies for applying unidirectional torque to the load shaft, the torque assemblies comprising a ratchet and a protective shell, the load shaft being fixedly connected to the ratchet, the protective shell being rotatably connected to the load shaft, a sliding rod being provided on the protective shell, the sliding rod being slidably connected to the protective shell, and a first driving assembly being provided on the protective shell for driving the sliding rod to press against or separate from the ratchet teeth of the ratchet;

[0007] A counterweight block is fixed on the protective shell for driving the rotation thereof, and a second driving assembly is also provided on the frame for raising the height of the counterweight block;

[0008] The torques applied by all the counterweights to the ratchet are in the same direction and at least one of the counterweights applies torque to the ratchet;

[0009] During the rotation of the ratchet, when the counterweight reaches a height H3, the first drive assembly drives the slide rod to separate from the ratchet. When the counterweight is between height H3 and height H1, the first drive assembly drives the slide rod to press against the ratchet. When the counterweight reaches a height H1, the second drive assembly drives the counterweight to rise to a height H2 and then separate from it.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] When the present invention is in use, when the driving gear drives the driven gear to rotate clockwise, a certain tooth of the driving gear presses against a certain tooth of the driven gear, and a tooth side clearance D exists on one side between the tooth profiles of the driving gear and the driven gear. When the driving gear drives the driven gear to rotate counterclockwise, the tooth side clearance D will move to the other side of the meshing teeth of the driving gear and the driven gear. Due to the presence of the counterweight, the counterweight applies a clockwise torque to the ratchet through the slide rod. The ratchet drives the driven gear to rotate through the load shaft so that the tooth side clearance D remains on the same side. Therefore, when the driving gear drives the driven gear to rotate in both directions, the influence of the tooth side clearance D can be eliminated. During the meshing rotation process of the driving gear and the driven gear, the positions of the meshing teeth of the driving gear and the driven gear are always on the same side of the teeth, thereby ensuring that the rotation stroke of the driven gear is consistent with the expected stroke.

[0012] The present invention effectively avoids mechanical errors that occur during gear transmission. Since the lamp is suspended above the stage, when the light is tilted and the light emission angle is slightly offset, the light irradiation position will be greatly offset. The elimination of the tooth side gap D greatly ensures the accuracy of the light irradiation position.

[0013] Preferably, the first driving assembly includes an extension rod, the sliding rod is slidably connected to the extension rod, a first spring is provided between the extension rod and the sliding rod for driving the sliding rod to press against the ratchet, a wedge block is fixed on the sliding rod, a push rod is provided on the extension rod for driving the sliding rod to separate from the ratchet, the push rod is slidably connected to the extension rod, a limit block is provided on the rotation path of the push rod, and the limit block is located to the upper right of the ratchet;

[0014] In the initial state, the counterweight block applies a clockwise torque to the ratchet through a ratchet tooth of the ratchet wheel. As the ratchet wheel rotates counterclockwise, the sliding rod drives the extension rod and the push rod to rotate. The push rod pushes the wedge block to slide under the limiting action of the limit block, and the wedge block drives the sliding rod to disengage from the ratchet wheel. The protective shell rotates clockwise under the action of the gravity of the counterweight block, and the push rod disengages from the limit block. The first spring drives the sliding rod to slide and press against the adjacent ratchet tooth on the lower side.

[0015] Preferably, a second spring for driving the push rod to reset is provided between the push rod and the extension rod.

[0016] Preferably, the extension rod is located on the radial extension line of the ratchet wheel to increase the lever arm of the counterweight.

[0017] Preferably, the ratchet teeth of two adjacent ratchet wheels are staggered in the cross-sectional direction of the ratchet wheels.

[0018] Preferably, the second driving assembly includes a lifting assembly, the lifting assembly is connected to a push plate for raising the height of the counterweight block, and the push plate is located on the right side of the ratchet wheel;

[0019] In the initial state, the counterweight block applies a clockwise torque to the ratchet through one of the ratchet teeth of the ratchet. As the ratchet rotates clockwise, the ratchet drives the protective shell and the counterweight block to rotate through the sliding rod. When the counterweight block rotates to a height H1, the lifting assembly drives the push plate to drive the counterweight block to rise, and the counterweight block rotates until it disengages from the path of the push plate.

[0020] Preferably, the lifting assembly includes a driving wheel, a belt is sleeved on the outer side of the driving wheel, and the push plate is fixedly connected to the belt.

[0021] Preferably, the push plate is provided with an infrared transmitter and an infrared receiver which are arranged opposite to each other, and when the counterweight block is located between the infrared transmitter and the infrared receiver, the lifting assembly works.

[0022] Preferably, it further comprises a counterweight plate for increasing the weight of the counterweight block, and the counterweight plate is detachably connected to the counterweight block.

[0023] Preferably, a driving bevel gear is fixedly provided on the driven gear, the driving bevel gear is meshed with a driven bevel gear, and the driven bevel gear is fixedly connected to the load shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front cross-sectional structural diagram of the present invention;

[0025] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0026] Figure 3 Schematic diagram of the shaft side structure of the load shaft and the ratchet;

[0027] Figure 4 This is a schematic diagram of the structure in which the counterweight is located between the height H1 and the height H3;

[0028] Figure 5 This is a schematic diagram of the structure where the counterweight is located at a height of H2;

[0029] Figure 6 This is a schematic diagram of the structure with the counterweight located at a height of H3;

[0030] Figure 7 Schematic diagram of the position structure of the tooth side clearance D;

[0031] Figure 8 Schematic diagram of the cross-sectional structure of two ratchets.

[0032] Figure numerals: 10, frame; 11, driving gear; 12, driven gear; 13, driving bevel gear; 14, driven bevel gear; 15, load shaft; 16, lamp; 20, ratchet; 21, protective shell; 22, extension rod; 23, slide rod; 24, wedge block; 25, first spring; 26, push rod; 27, second spring; 28, counterweight block; 29, counterweight plate; 30, driving wheel; 31, belt; 32, push plate; 33, infrared transmitter; 34, infrared receiver; 35, limit block. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0034] like Figures 1 to 4 and Figure 7 As shown, this embodiment provides a light motion adjustment device. To eliminate tooth side clearance D and thereby ensure the accuracy of gear transmission, the device includes a frame 10, a lamp 16 is mounted on the frame 10, and the lamp 16 is connected to a driven gear 12. The driven gear 12 is meshed with a driving gear 11. A driving bevel gear 13 is fixedly mounted on the driven gear 12. The driving bevel gear 13 is meshed with a driven bevel gear 14. A load shaft 15 is fixedly connected to the driven bevel gear 14.

[0035] Specifically, the axis of the load shaft 15 is a horizontal line, and the load shaft 15 is provided with two torque assemblies for applying clockwise torque to the load shaft 15 , and the torque assemblies include a ratchet 20 and a protective shell 21;

[0036] Specifically, the structures of two adjacent ratchet wheels 20 are as follows: Figure 3 and Figure 8 As shown, the ratchet teeth on the ratchet wheel 20 are provided in a circular array of at least six. When observed from the cross-sectional angle of the ratchet wheel 20, the ratchet teeth of two adjacent ratchet wheels 20 are staggered. Preferably, the line connecting the ratchet teeth of the ratchet wheel 20 and its center divides the circle into n equal parts, and the line connecting the ratchet teeth of two adjacent ratchet wheels 20 and their centers divides the circle into 2n equal parts.

[0037] The load shaft 15 is fixedly connected to the ratchet 20, and the protective shell 21 is rotatably connected to the load shaft 15. A sliding rod 23 is provided on the protective shell 21, and the sliding rod 23 is slidably connected to the protective shell 21. The protective shell 21 is provided with a first driving component for driving the sliding rod 23 to press against or separate from the ratchet teeth of the ratchet 20; a counterweight block 28 is fixed on the protective shell 21 for driving it to rotate clockwise, and the counterweight block 28 is located on the radial line of the protective shell 21. The frame 10 is also provided with a second driving component for raising the height of the counterweight block 28;

[0038] The ratchet 20 is provided with a height H3 and a height H1 on the upper and lower sides, respectively. Specifically, the distance between the height H3 and the axis center of the load shaft 15 and the distance between the height H1 and the axis center of the load shaft 15 are both smaller than the distance between the counterweight 28 and the axis center of the load shaft 15. The distance between the height H1 and the height H3 is larger than the distance between the two counterweights 28 when the sliding rod 23 is connected to two adjacent ratchet teeth on the ratchet 20.

[0039] During the rotation of the ratchet 20, when the counterweight 28 reaches a height H3, the first drive assembly drives the slide bar 23 to separate from the ratchet 20. When the counterweight 28 is located between the height H3 and the height H1, the first drive assembly drives the slide bar 23 to press against the ratchet 20. When the counterweight 28 reaches a height H1, the second drive assembly drives the counterweight 28 to be lifted to a height H2 and then disengaged from it. Due to the staggered arrangement of the ratchet teeth on the two adjacent ratchet wheels 20, the two adjacent counterweights 28 apply torque to their respective ratchet wheels 20 alternately, thereby ensuring that a clockwise torque is applied to the ratchet wheel 20 at all times.

[0040] During use: When the driving gear 11 drives the driven gear 12 to rotate clockwise, the driving gear 11 and the driven gear 12 engage and rotate, and a tooth side clearance D exists on one side between the tooth profiles of the driving gear 11 and the driven gear 12. When the driving gear 11 drives the driven gear 12 to rotate counterclockwise, under normal circumstances, the tooth side clearance D will move to the other side of the meshing teeth of the driving gear 11 and the driven gear 12;

[0041] However, due to the presence of the counterweight 28, the counterweight 28 applies a clockwise torque to the ratchet 20 via the slide bar 23. The ratchet 20 drives the driven gear 12 to rotate via the load shaft 15, so that the tooth side clearance D remains on the same side. Consequently, when the driving gear 11 drives the driven gear 12 to rotate clockwise or counterclockwise, the meshing tooth profiles of the driving gear 11 and the driven gear 12 are on the same side, thereby eliminating the influence of the tooth side clearance D on the transmission error between the driving gear 11 and the driven gear 12, thereby ensuring that the rotational stroke of the driven gear 12 remains consistent with the expected stroke.

[0042] The present invention effectively avoids mechanical errors that occur during gear transmission. Since the lamp is suspended above the stage, when the light is tilted and the light emission angle is slightly offset, the light irradiation position will be greatly offset. The elimination of the tooth side gap D greatly ensures the accuracy of the light irradiation position.

[0043] Combine Figure 4 and Figure 6 As shown, in order to ensure that the counterweight 28 continuously applies clockwise torque to the load shaft 15 under the premise of counterclockwise rotation of the ratchet 20, the first driving assembly includes an extension rod 22. The extension rod 22 is located on the extension line of the diameter of the ratchet 20 and is used to increase the lever arm of the counterweight 28, thereby increasing the torque applied by the counterweight 28 to the ratchet 20 without changing the mass of the counterweight 28.

[0044] The slide bar 23 is slidably connected to the extension bar 22, and a first spring 25 for driving the slide bar 23 to press against the ratchet 20 is provided between the extension bar 22 and the slide bar 23. A wedge block 24 is fixed to the slide bar 23, and a push rod 26 for driving the slide bar 23 to separate from the ratchet 20 is provided on the extension bar 22. The push rod 26 is slidably connected to the extension bar 22, and a second spring 27 for driving the push rod 26 to reset is provided between the push rod 26 and the extension bar 22. The second spring 27 is sleeved on the outside of the push rod 26, and a limit block 35 is provided on the rotation path of the push rod 26, and the limit block 35 is located on the right side of the ratchet 20;

[0045] When in use: the counterweight 28 applies a clockwise torque to the ratchet 20 through a ratchet tooth of the ratchet 20. As the ratchet 20 rotates counterclockwise, the slide bar 23 drives the extension rod 22 and the push rod 26 to rotate. The push rod 26 pushes the wedge block 24 to slide under the restriction of the limit block 35. The wedge block 24 drives the slide bar 23 to disengage from the ratchet 20. The protective shell 21 rotates clockwise under the gravity of the counterweight 28. The push rod 26 disengages from the limit block 35. The first spring 25 drives the slide bar 23 to slide and press against the adjacent ratchet tooth on the lower side.

[0046] The above structure ensures that the counterweight 28 continuously applies clockwise torque to the load shaft 15 under the premise that the ratchet 20 rotates counterclockwise.

[0047] like Figure 4 and Figure 5 As shown, in order to maintain the torque applied by the counterweight 28 to the ratchet 20 during the clockwise rotation of the ratchet 20, (it is worth noting that the height H2 is between the height H3 and the height H1), the second driving assembly includes a lifting assembly. Specifically, the lifting assembly includes a driving wheel 30, a belt 31 is provided on the outer side of the driving wheel 30, and the push plate 32 is fixedly connected to the belt 31; the push plate 32 is provided with an infrared transmitter 33 and an infrared receiver 34 arranged opposite to each other. During the clockwise rotation of the ratchet 20, when the counterweight 28 is located between the infrared transmitter 33 and the infrared receiver 34, the driving wheel 30 works, and the belt 31 drives the push plate 32 to move upward. During the process of the push plate 32 lifting the counterweight 28, when the counterweight 28 moves to H2, the push plate 32 and the counterweight 28 are disengaged.

[0048] Specifically, the height difference between the height H2 and the height H1 is greater than the linear distance between the counterweight 28 in the two states when the slide bar 23 is connected to two adjacent ratchet teeth on the ratchet wheel 20;

[0049] When in use, the counterweight 28 applies a clockwise torque to the ratchet 20 through one of the ratchet teeth of the ratchet 20. As the ratchet 20 rotates clockwise, the ratchet 20 drives the protective shell 21 and the counterweight 28 to rotate clockwise through the sliding rod 23. When the counterweight 28 rotates to a height H1, the lifting assembly drives the push plate 32 to drive the counterweight 28 to rise. When the counterweight 28 rotates to a height H2, the counterweight 28 disengages from the moving path of the push plate 32.

[0050] Through the above structure, it is achieved that during the clockwise rotation of the ratchet 20 , the height of the counterweight 28 is raised in a timely manner to maintain the torque applied by the counterweight 28 to the ratchet 20 .

[0051] like Figure 2 As shown, in order to ensure that the counterweight block 28 drives the driven gear 12 to rotate and thus eliminate the tooth side clearance D, it is necessary to adjust the counterweight of the counterweight block 28, and also include a counterweight plate 29 for adding weight to the counterweight block 28, and the counterweight plate 29 is detachably connected to the counterweight block 28.

[0052] The above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A light motion adjustment device, comprising a frame (10), a lamp (16) being provided on the frame (10), the lamp (16) being connected to a driven gear (12), the driven gear (12) being engaged with a driving gear (11), characterized in that: The driven gear (12) is connected to a load shaft (15), the axis of the load shaft (15) is a horizontal line, and at least two torque components for applying a unidirectional torque to the load shaft (15) are provided on the load shaft (15), and the torque components include a ratchet (20) and a protective shell (21), the load shaft (15) is fixedly connected to the ratchet (20), the protective shell (21) is rotatably connected to the load shaft (15), a sliding rod (23) is provided on the protective shell (21), and the sliding rod (23) is slidably connected to the protective shell (21), and a first driving component for driving the sliding rod (23) to press against or separate from the ratchet teeth of the ratchet (20); The protective shell (21) is fixedly provided with a counterweight (28) for driving the rotation thereof, and the frame (10) is further provided with a second drive assembly for raising the height of the counterweight (28); The torques applied by all the counterweights (28) to the ratchet (20) are in the same direction, and at least one of the counterweights (28) applies torque to the ratchet (20); During the rotation of the ratchet (20), when the counterweight (28) reaches a height H3, the first driving assembly drives the slide bar (23) to separate from the ratchet (20); when the counterweight (28) is located between the height H3 and the height H1, the first driving assembly drives the slide bar (23) to press against the ratchet (20); when the counterweight (28) reaches the height H1, the second driving assembly drives the counterweight (28) to rise to a height H2 and then separate from it; the height H2 is between the height H3 and the height H1.

2. The light motion adjustment device according to claim 1, characterized in that: The first driving assembly includes an extension rod (22), the slide rod (23) is slidably connected to the extension rod (22), a first spring (25) is provided between the extension rod (22) and the slide rod (23) for driving the slide rod (23) to press against the ratchet (20), a wedge block (24) is fixed on the slide rod (23), a push rod (26) is provided on the extension rod (22) for driving the slide rod (23) to separate from the ratchet (20), the push rod (26) is slidably connected to the extension rod (22), a limit block (35) is provided on the rotation path of the push rod (26), and the limit block (35) is located on the upper right of the ratchet (20); In the initial state, the counterweight (28) applies a clockwise torque to the ratchet (20) through a ratchet tooth of the ratchet (20). As the ratchet (20) rotates counterclockwise, the slide bar (23) drives the extension rod (22) and the push rod (26) to rotate. The push rod (26) pushes the wedge block (24) to slide under the limiting action of the limit block (35). The wedge block (24) drives the slide bar (23) to disengage from the ratchet (20). The protective shell (21) rotates clockwise under the action of the gravity of the counterweight (28). The push rod (26) disengages from the limit block (35). The first spring (25) drives the slide bar (23) to slide and press against the adjacent ratchet tooth on the lower side.

3. The light motion adjustment device according to claim 2, characterized in that: A second spring (27) for driving the push rod (26) to return to its original position is provided between the push rod (26) and the extension rod (22).

4. A light motion adjustment device according to claim 2 or 3, characterized in that: The extension rod (22) is located on the radial extension line of the ratchet (20) and is used to increase the lever arm of the counterweight (28).

5. The light motion adjustment device according to claim 1, characterized in that: The ratchet teeth of two adjacent ratchets (20) are staggeredly distributed in the cross-sectional direction of the ratchet (20).

6. The light motion adjustment device according to claim 2, characterized in that: The second driving assembly includes a lifting assembly, the lifting assembly is connected to a push plate (32) for raising the height of the counterweight (28), and the push plate (32) is located on the right side of the ratchet (20); In the initial state, the counterweight (28) applies a clockwise torque to the ratchet (20) through a ratchet tooth of the ratchet (20). As the ratchet (20) rotates clockwise, the ratchet (20) drives the protective shell (21) and the counterweight (28) to rotate through the slide rod (23). When the counterweight (28) rotates to a height H1, the lifting assembly drives the push plate (32) to drive the counterweight (28) to rise, and the counterweight (28) rotates until it disengages from the moving path of the push plate (32).

7. The light motion adjustment device according to claim 6, characterized in that: The lifting assembly comprises a driving wheel (30), the outer side of the driving wheel (30) is sleeved with a belt (31), and the push plate (32) is fixedly connected to the belt (31).

8. A light motion adjustment device according to claim 6 or 7, characterized in that: The push plate (32) is provided with an infrared transmitter (33) and an infrared receiver (34) which are arranged opposite to each other. When the counterweight (28) is located between the infrared transmitter (33) and the infrared receiver (34), the lifting assembly works.

9. The light motion adjustment device according to claim 1, characterized in that: It also includes a counterweight plate (29) for increasing the weight of the counterweight block (28), and the counterweight plate (29) is detachably connected to the counterweight block (28).

10. The light motion adjustment device according to claim 1, characterized in that: A driving bevel gear (13) is fixedly provided on the driven gear (12), the driving bevel gear (13) is meshed with a driven bevel gear (14), and the driven bevel gear (14) is fixedly connected to the load shaft (15).

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