Motor damping structure of stage lamp

Abstract

The invention discloses a motor damping structure of a stage lamp, and relates to the technical field of stage lamps, the motor damping structure comprises a multidirectional damping mechanism, a stepping motor fixedly mounted on the inner wall of the top of a motor cover and a balance disc coaxially fixed at the top end of an output shaft of the stepping motor, and a lamp support is fixedly mounted on the outer wall of the top of the balance disc; a stage lamp body is installed on the lamp support, and the multidirectional damping mechanism comprises a damping seat, a protection box, a guide rail frame, two axial damping shock absorbers, a radial damper shock absorber, two sliding seats and two linkage oblique arms. The axial damping shock absorbers and the radial damper shock absorbers are arranged in the axial direction and the radial direction of the motor respectively, vibration in multiple directions is attenuated synchronously, and the shock absorption performance of the motor is effectively improved; the optimal damping coefficient of the shock absorber can be conveniently adjusted in real time according to the vibration frequency in the motor operation process, and the technical effects of self-adaptive precise shock absorption and effective coverage of full-band vibration are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of stage lamps, and in particular to a motor shock-absorbing structure of a stage lamp. Background Art

[0002] In stage lighting fixtures, the combination of a stepper motor and a controller allows the lamp head to rotate to different angles on the lamp holder, ultimately creating different lighting effects. However, the motor generates vibrations during operation. Traditional stage lighting motors are often mounted directly within the fixture frame, resulting in poor vibration damping and causing the following problems:

[0003] Motor vibration can be directly transmitted to other components of the lamp, affecting the stability of the lamp's optical elements and causing deviations in the light projection angle. Furthermore, motor vibration can loosen internal circuit components, shortening their lifespan and increasing maintenance costs. Therefore, we propose a motor vibration-damping structure for stage lamps. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a motor shock-absorbing structure for a stage lighting fixture, which effectively solves the problem that the vibration of the existing stage lighting fixture motor is directly transmitted to other components of the lamp, affecting the stability of the optical elements of the lamp and causing deviations in the light projection angle. In addition, the motor vibration may cause the internal circuit elements of the lamp to loosen, shortening its service life and increasing maintenance costs.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A motor vibration reduction structure for a stage lighting fixture comprises a stepper motor fixedly mounted on the top inner wall of a motor cover and a balance plate coaxially fixed to the top of the stepper motor output shaft. The stepper motor output shaft passes through the top of the motor cover. A lamp holder is fixedly mounted on the top outer wall of the balance plate, and a stage lighting fixture body is mounted on the lamp holder. The structure also includes a multi-directional vibration reduction mechanism.

[0007] The multi-directional shock absorbing mechanism includes a shock absorbing seat fixedly connected to the outer wall of the bottom of the motor cover, a protective box, a guide rail frame fixedly connected to the inner wall of the bottom of the protective box, two axial damping shock absorbers, a radial damper shock absorber, two sliding seats slidably connected to the guide rail frame, and two linkage oblique arms symmetrically hinged to the tops of the two sliding seats, and the top ends of the two linkage oblique arms are hinged to the bottom of the shock absorbing seat;

[0008] The front outer wall of the protective box is fixedly mounted with a lamp controller, and two kinetic energy conversion mechanisms are symmetrically arranged in the protective box. The balance disk is provided with an adjustable counterweight balancing mechanism, and the adjustable counterweight balancing mechanism includes four annularly distributed adjustable counterweight assemblies and a gear transmission assembly.

[0009] As a preferred technical solution of the present invention, the axial damping shock absorber includes an axial hydraulic cylinder fixedly mounted on the top outer wall of the guide rail frame, an axial damping piston rod installed in the axial hydraulic cylinder, an axial shock-absorbing spring sleeved on the axial damping piston rod, a first piezoelectric sensor embedded on the end face of the axial damping piston rod, and a first electromagnetic proportional valve installed on the oil circuit of the axial hydraulic cylinder and used to control the on-off area of the oil circuit.

[0010] As a preferred technical solution of the present invention, the first piezoelectric sensor and the first electromagnetic proportional valve are both electrically connected to the lamp controller by wireless transmission, and the top outer wall of the axial damping piston rod is fixedly connected to the bottom outer wall of the shock absorber seat.

[0011] As a preferred technical solution of the present invention, the radial damper shock absorber includes a radial hydraulic cylinder fixedly connected to the top outer wall of the guide rail frame through a fixing part, two radial damping piston rods installed in the radial hydraulic cylinder, two radial shock-absorbing springs sequentially sleeved on the two radial damping piston rods, a second piezoelectric sensor embedded on the end face of one of the radial damping piston rods, and a second electromagnetic proportional valve installed on the oil circuit of the radial hydraulic cylinder and used to control the on-off area of the oil circuit, and the second piezoelectric sensor and the second electromagnetic proportional valve are both electrically connected to the lamp controller by wireless transmission.

[0012] As a preferred technical solution of the present invention, the kinetic energy conversion mechanism includes a movable rod, a hinged oblique rod hinged to the bottom end of the movable rod, a multi-cylinder piston cylinder fixedly installed on the top inner wall of the protective box, and multiple piston assemblies installed in the multi-cylinder piston cylinder.

[0013] As a preferred technical solution of the present invention, the port of the multi-tube piston cylinder is equipped with blowing nozzles having the same number as the piston assemblies, and one end of each of the multiple piston assemblies is fixedly connected to the side wall of the movable rod.

[0014] As a preferred technical solution of the present invention, the bottom end of the hinged oblique rod is hinged to the top of the shock-absorbing seat, a slide is provided on the top inner wall of the protective box, and the outer wall of the movable rod is slidably connected to the inner wall of the slide.

[0015] As a preferred technical solution of the present invention, the four adjustable counterweight assemblies each include a slide groove opened on the balancing plate, an adjusting screw rotatably installed in the slide groove, an adjusting block threadedly connected to the adjusting screw, and a counterweight block fixedly installed on the bottom outer wall of the adjusting block.

[0016] As a preferred technical solution of the present invention, the gear transmission assembly includes a mounting groove opened at the top center of the balancing disk, a first bevel gear fixedly connected to one end of four adjusting screws in sequence, a shaft body rotatably installed in the mounting groove and a second bevel gear fixedly sleeved on the top end of the shaft body, and the four first bevel gears are all engaged with the second bevel gear.

[0017] As a preferred technical solution of the present invention, the outer walls of the four adjusting blocks are slidably connected to the inner walls of the four sliding grooves respectively, and a rotating cap is fixedly connected to the outer wall of one end of one of the adjusting screws.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention sets axial damping shock absorbers and radial damping shock absorbers in the axial and radial directions of the motor respectively, adopts a composite deformation design of axial compression plus radial stretching to synchronously attenuate multi-directional vibrations, effectively improving the shock absorption performance of the motor;

[0020] 2. The present invention respectively incorporates a first piezoelectric sensor and a second piezoelectric sensor in the axial damping shock absorber and the radial damping shock absorber to detect the vibration frequency in real time, thereby facilitating real-time adjustment of the optimal damping coefficient of the shock absorber according to the vibration frequency during motor operation, thereby achieving the technical effects of adaptive and precise shock absorption and effective coverage of full-frequency vibration.

[0021] 3. The present invention is provided with two kinetic energy conversion mechanisms, which can convert the kinetic energy during the vibration process into the reciprocating motion of multiple piston assemblies to generate airflow for heat dissipation of the motor. In addition, during the reciprocating motion of the multiple piston assemblies in the multi-tube piston cylinder, air resistance will gradually consume the vibration energy, further achieving a shock absorption effect.

[0022] 4. The present invention is equipped with an adjustable counterweight balancing mechanism, which actively offsets the centrifugal force vibration caused by uneven mass distribution when the motor rotates by dynamically adjusting the physical positions of the four counterweight blocks, thereby further achieving a shock-absorbing effect;

[0023] In summary, the present invention effectively improves the shock absorption performance of the motor through the coordinated cooperation of multiple shock absorption methods, thereby solving the problem that the vibration of the traditional stage lighting motor is directly transmitted to other components of the lamp, affecting the stability of the optical elements of the lamp, resulting in deviations in the light projection angle, and the motor vibration may cause the internal circuit elements of the lamp to loosen, shortening its service life and increasing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0025] Figure 1 Schematic diagram of the external three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the vertical section of the protection box of the present invention;

[0027] Figure 3 This is a three-dimensional enlarged structural diagram of the multi-directional shock absorbing mechanism of the present invention after being connected to the motor cover;

[0028] Figure 4 It is a three-dimensional enlarged structural diagram of the multi-directional shock absorbing mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional enlarged structure of the top of the balancing plate of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional enlarged structure of the bottom of the balancing plate of the present invention;

[0031] Figure 7 It is a three-dimensional enlarged structural schematic diagram of the adjustable counterweight balancing mechanism of the present invention;

[0032] Figure 8 It is a three-dimensional enlarged structural diagram of local parts of the present invention.

[0033] Figure: 1. Motor cover; 2. Stepper motor; 3. Balance plate; 4. Lamp support; 5. Stage lamp body; 6. Shock absorber; 7. Guide rail; 8. Axial damping shock absorber; 801. Axial hydraulic cylinder; 802. Axial damping piston rod; 803. Axial damping spring; 804. First piezoelectric sensor; 805. First electromagnetic proportional valve; 9. Radial damper shock absorber; 901. Radial hydraulic cylinder; 902. Radial damping piston rod; 903. Radial shock-absorbing spring; 904. Second piezoelectric sensor; 905. Second solenoid proportional valve; 10. Sliding seat; 11. Linked oblique arm; 12. Protective box; 13. Lamp controller; 14. Movable rod; 15. Articulated oblique rod; 16. Multi-tube piston cylinder; 17. Piston assembly; 18. Slide groove; 19. Adjusting screw; 20. Adjusting block; 21. Counterweight; 22. First bevel gear; 23. Second bevel gear; 24. Rotating cap. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Example 1, with reference to Figure 1-4 and Figure 8 A motor vibration reduction structure for a stage lighting fixture includes a multi-directional vibration reduction mechanism, a stepper motor 2 fixedly mounted on the top inner wall of a motor cover 1, and a balance plate 3 coaxially fixed to the top of the output shaft of the stepper motor 2. The output shaft of the stepper motor 2 passes through the top of the motor cover 1. A lamp holder 4 is fixedly mounted on the top outer wall of the balance plate 3, and a stage lighting fixture body 5 is mounted on the lamp holder 4.

[0036] In this embodiment, the multi-directional shock absorption mechanism includes a shock absorbing seat 6 fixedly connected to the bottom outer wall of the motor cover 1, a protective box 12, a guide rail frame 7 fixedly connected to the bottom inner wall of the protective box 12, two axial damping shock absorbers 8, a radial damper shock absorber 9, two sliding seats 10 slidably connected to the guide rail frame 7, and two linkage oblique arms 11 symmetrically hinged to the tops of the two sliding seats 10. The top ends of the two linkage oblique arms 11 are hinged to the bottom of the shock absorbing seat 6. A lamp controller 13 is fixedly mounted on the front outer wall of the protective box 12.

[0037] Furthermore, the axial damping shock absorber 8 includes an axial hydraulic cylinder 801 fixedly mounted on the top outer wall of the guide rail frame 7, an axial damping piston rod 802 mounted in the axial hydraulic cylinder 801, an axial shock-absorbing spring 803 sleeved on the axial damping piston rod 802, a first piezoelectric sensor 804 embedded on the end face of the axial damping piston rod 802, and a first electromagnetic proportional valve 805 mounted on the oil circuit of the axial hydraulic cylinder 801 and used to control the on-off area of the oil circuit.

[0038] Furthermore, the first piezoelectric sensor 804 and the first electromagnetic proportional valve 805 are both electrically connected to the lamp controller 13 by wireless transmission, and the top outer wall of the axial damping piston rod 802 is fixedly connected to the bottom outer wall of the shock absorbing seat 6;

[0039] Furthermore, the radial damper shock absorber 9 includes a radial hydraulic cylinder 901 fixedly connected to the top outer wall of the guide rail frame 7 through a fixing member, two radial damping piston rods 902 installed in the radial hydraulic cylinder 901, two radial shock absorbing springs 903 sequentially sleeved on the two radial damping piston rods 902, a second piezoelectric sensor 904 embedded on the end surface of one of the radial damping piston rods 902, and a second electromagnetic proportional valve 905 installed in the oil circuit of the radial hydraulic cylinder 901 and used to control the flow area of the oil circuit. The second piezoelectric sensor 904 and the second electromagnetic proportional valve 905 are both electrically connected to the lamp controller 13 by wireless transmission.

[0040] When this embodiment is in use: first, an axial damping shock absorber 8 and a radial damping shock absorber 9 are respectively provided in the axial direction and radial direction of the motor. When the motor is running and generating vibration, the displacement of the shock absorbing seat 6 causes the two axial damping springs 803 on the two axial damping piston rods 802 to undergo elastic deformation, and the two linkage oblique arms 11 also move and drive the two radial damping springs 903 on the two radial damping piston rods 902 to undergo elastic deformation. In this way, a composite deformation design of axial compression plus radial tension is adopted to synchronously attenuate multi-directional vibrations, thereby effectively improving the shock absorption performance of the motor.

[0041] Secondly, the vibration frequency of the axial damping piston rod 802 is detected in real time by the first piezoelectric sensor 804 built into the axial hydraulic cylinder 801, and the information is fed back to the lamp controller 13 in real time. The lamp controller 13 controls the first electromagnetic proportional valve 805 to adjust the damping coefficient in real time. At the same time, the vibration frequency of the radial damping piston rod 902 is detected in real time by the second piezoelectric sensor 904 built into the radial hydraulic cylinder 901, and the information is fed back to the lamp controller 13 in real time. The lamp controller 13 controls the second electromagnetic proportional valve 905 to adjust the damping coefficient in real time. In this way, it is convenient to adjust the optimal damping coefficient of the shock absorber in real time according to the vibration frequency during the operation of the motor, so as to achieve the technical effect of adaptive precise shock absorption and effective coverage of full-band vibration.

[0042] Example 2, reference Figure 2 This embodiment is optimized based on the embodiment 1, specifically: two kinetic energy conversion mechanisms are symmetrically provided in the protection box 12;

[0043] More specifically, the kinetic energy conversion mechanism includes a movable rod 14, a hinged oblique rod 15 hinged to the bottom end of the movable rod 14, a multi-tube piston cylinder 16 fixedly mounted on the top inner wall of the protective box 12, and a plurality of piston assemblies 17 mounted in the multi-tube piston cylinder 16;

[0044] Furthermore, the same number of blowing nozzles as the number of piston assemblies 17 are installed at the end of the multi-tube piston cylinder 16, and one end of each of the multiple piston assemblies 17 is fixedly connected to the side wall of the movable rod 14;

[0045] Furthermore, the bottom end of the hinged oblique rod 15 is hinged to the top of the shock-absorbing seat 6, and a slide is provided on the top inner wall of the protection box 12, and the outer wall of the movable rod 14 is slidably connected to the inner wall of the slide;

[0046] When this embodiment is in use: the motor will vibrate during operation, and the shock-absorbing seat 6 will have a slight tendency to shake up and down. Under the hinged effect of the hinged oblique rod 15, the movable rod 14 will move left and right and drive all the piston assemblies 17 to reciprocate in the multi-cylinder piston cylinder 16, so that the multiple blowing nozzles can continuously blow out airflow to dissipate heat and cool the stepping motor 2. In this way, the kinetic energy in the vibration process can be converted into the reciprocating motion of the multiple piston assemblies 17 to generate airflow for the heat dissipation of the motor, and the multiple piston assemblies 17 will have air resistance in the process of reciprocating motion in the multi-cylinder piston cylinder 16 to gradually consume the energy of the vibration, thereby further achieving the effect of shock absorption.

[0047] Example 3, reference Figure 1 and Figure 5-8 This embodiment is optimized based on the first embodiment, specifically: a motor damping structure for a stage lighting fixture, further comprising an adjustable counterweight balancing mechanism provided on a balance plate 3, the adjustable counterweight balancing mechanism comprising four annularly distributed adjustable counterweight assemblies and a gear transmission assembly;

[0048] Furthermore, the four adjustable counterweight assemblies each include a chute 18 provided on the balancing plate 3, an adjusting screw 19 rotatably mounted in the chute 18, an adjusting block 20 threadedly connected to the adjusting screw 19, and a counterweight 21 fixedly mounted on the outer wall of the bottom of the adjusting block 20. The outer walls of the four adjusting blocks 20 are respectively slidably connected to the inner walls of the four chute 18, and a rotating cap 24 is fixedly connected to the outer wall of one end of one of the adjusting screws 19.

[0049] Furthermore, the gear transmission assembly includes a mounting groove provided at the top center of the balancing disc 3, a first bevel gear 22 fixedly connected to one end of four adjusting screws 19 in sequence, a shaft rotatably mounted in the mounting groove, and a second bevel gear 23 fixedly sleeved on the top end of the shaft, and the four first bevel gears 22 are all meshed with the second bevel gear 23;

[0050] When this embodiment is in use: one of the adjusting screws 19 and the first bevel gear 22 thereon is driven to rotate by the rotating cap 24, and then the second bevel gear 23 engaged therewith rotates immediately. At this time, the rotation of the second bevel gear 23 will cause the other three first bevel gears 22 to rotate synchronously, and then under the limit of the four slide slots 18, the four adjusting screws 19 rotate synchronously and drive the four adjusting blocks 20 to move synchronously, so that the four counterweights 21 can be synchronously moved closer to the center or expanded toward the periphery by the forward and reverse rotation of the rotating cap 24. In this way, by dynamically adjusting the physical positions of the four counterweights 21, the centrifugal force vibration caused by uneven mass distribution (such as rotor eccentricity, load changes) when the motor rotates is actively offset, thereby further achieving a shock absorption effect.

[0051] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such a process, method, article or device.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A motor damping structure for a stage lamp, comprising a stepper motor (2) fixedly mounted on the top inner wall of a motor cover (1) and a balance plate (3) coaxially fixed to the top end of the output shaft of the stepper motor (2), wherein the output shaft of the stepper motor (2) passes through the top of the motor cover (1), a lamp holder (4) is fixedly mounted on the top outer wall of the balance plate (3), and a stage lamp body (5) is mounted on the lamp holder (4), characterized in that: It also includes a multi-directional shock absorption mechanism; The multi-directional shock absorbing mechanism comprises a shock absorbing seat (6) fixedly connected to the outer wall of the bottom of the motor cover (1), a protection box (12), a guide rail frame (7) fixedly connected to the inner wall of the bottom of the protection box (12), two axial damping shock absorbers (8), a radial damper shock absorber (9), two sliding seats (10) slidably connected to the guide rail frame (7), and two linkage oblique arms (11) symmetrically hinged to the tops of the two sliding seats (10), and the top ends of the two linkage oblique arms (11) are hinged to the bottom of the shock absorbing seat (6); A lamp controller (13) is fixedly mounted on the front outer wall of the protection box (12), and two kinetic energy conversion mechanisms are symmetrically arranged in the protection box (12). An adjustable counterweight balancing mechanism is provided on the balance disk (3), and the adjustable counterweight balancing mechanism includes four annularly distributed adjustable counterweight assemblies and a gear transmission assembly.

2. The motor damping structure of a stage lighting fixture according to claim 1, characterized in that: The axial damping shock absorber (8) comprises an axial hydraulic cylinder (801) fixedly mounted on the top outer wall of the guide rail frame (7), an axial damping piston rod (802) mounted in the axial hydraulic cylinder (801), an axial damping spring (803) sleeved on the axial damping piston rod (802), a first piezoelectric sensor (804) embedded on the end surface of the axial damping piston rod (802), and a first electromagnetic proportional valve (805) mounted on the oil circuit of the axial hydraulic cylinder (801) and used to control the on-off area of the oil circuit.

3. The motor damping structure of a stage lighting fixture according to claim 2, characterized in that: The first piezoelectric sensor (804) and the first electromagnetic proportional valve (805) are both electrically connected to the lamp controller (13) by wireless transmission, and the top outer wall of the axial damping piston rod (802) is fixedly connected to the bottom outer wall of the shock-absorbing seat (6).

4. The motor damping structure of a stage lighting fixture according to claim 1, characterized in that: The radial damper shock absorber (9) comprises a radial hydraulic cylinder (901) fixedly connected to the outer wall of the top of the guide rail frame (7) through a fixing member, two radial damping piston rods (902) installed in the radial hydraulic cylinder (901), two radial shock absorbing springs (903) sequentially sleeved on the two radial damping piston rods (902), a second piezoelectric sensor (904) embedded on the end surface of one of the radial damping piston rods (902), and a second electromagnetic proportional valve (905) installed on the oil circuit of the radial hydraulic cylinder (901) and used to control the on-off area of the oil circuit, and the second piezoelectric sensor (904) and the second electromagnetic proportional valve (905) are both electrically connected to the lamp controller (13) by wireless transmission.

5. The motor damping structure of a stage lighting fixture according to claim 1, characterized in that: The kinetic energy conversion mechanism comprises a movable rod (14), a hinged inclined rod (15) hinged to the bottom end of the movable rod (14), a multi-tube piston cylinder (16) fixedly mounted on the top inner wall of the protection box (12), and a plurality of piston assemblies (17) mounted in the multi-tube piston cylinder (16).

6. The motor damping structure of a stage lighting fixture according to claim 5, characterized in that: The port of the multi-tube piston cylinder (16) is provided with blowing nozzles having the same number as the piston assemblies (17), and one end of each of the multiple piston assemblies (17) is fixedly connected to the side wall of the movable rod (14).

7. The motor damping structure of a stage lighting fixture according to claim 5, characterized in that: The bottom end of the hinged oblique rod (15) is hinged to the top of the shock-absorbing seat (6); a slide is provided on the top inner wall of the protection box (12); and the outer wall of the movable rod (14) is slidably connected to the inner wall of the slide.

8. The motor damping structure of a stage lighting fixture according to claim 1, characterized in that: The four adjustable counterweight assemblies each include a slide groove (18) provided on the balancing plate (3), an adjusting screw (19) rotatably mounted in the slide groove (18), an adjusting block (20) threadedly connected to the adjusting screw (19), and a counterweight block (21) fixedly mounted on the bottom outer wall of the adjusting block (20).

9. The motor damping structure of a stage lighting fixture according to claim 8, characterized in that: The gear transmission assembly comprises a mounting groove provided at the center of the top of the balancing disc (3), a first bevel gear (22) fixedly connected to one end of four adjusting screws (19) in sequence, a shaft body rotatably mounted in the mounting groove, and a second bevel gear (23) fixedly sleeved on the top end of the shaft body, and the four first bevel gears (22) are all meshed with the second bevel gear (23).

10. The motor damping structure of a stage lighting fixture according to claim 8, characterized in that: The outer walls of the four adjusting blocks (20) are respectively slidably connected to the inner walls of the four sliding grooves (18), and a rotating cap (24) is fixedly connected to the outer wall of one end of one of the adjusting screws (19).

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