Head-shaking stage lamp U-shaped frame electrodeless rotating mechanism with multiple protection

Abstract

The utility model discloses a multi-protection electrodeless rotating mechanism for a U-shaped frame of a head-shaking stage lamp, which relates to the technical field of stage lamp structures and mainly comprises a case, a U-shaped bracket, a connecting shaft sleeve and an anti-drop central column. The connecting shaft sleeve piece is provided with a limiting channel penetrating through the two ends of the connecting shaft sleeve piece, and an annular limiting step is formed along the bottom of the peripheral side of the anti-disengaging center column. A connecting opening is formed in the top of the machine case, and the connecting shaft sleeve piece is vertically installed above the connecting opening and fixedly connected with the machine case through the corresponding open holes, the fixing holes and fixing screws. The anti-disengaging center column penetrates through the connecting opening and the limiting channel and is hinged to the U-shaped support, and meanwhile the upper side face of the limiting step abuts against the bottom end of the fixing screw. Compared with the prior art, the mechanism provides better bearing performance, it is guaranteed that connecting structural parts are not prone to loosening, and screw connection is more stable and not prone to falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lamp structures, in particular to a U-shaped frame stepless rotating mechanism of a shaking head stage lamp with multiple protections. Background Art

[0002] Stage lighting and illumination are one of the core means of stage art modeling. It uses professional lighting equipment, including lighting fixtures, slides, control systems, etc., to coordinate with the development of the plot, skillfully use light color and its changes to depict scenes, create atmospheres, highlight the protagonists, and simulate natural phenomena such as wind, rain, fog, water waves, lightning, etc., to create a unique sense of stage space and time.

[0003] In order to realize the needs of projection in different directions and the dynamic change of beam direction, the moving head stage light (referred to as the moving head light) came into being. The moving head light is mainly composed of three parts: the base, the U-shaped frame and the lamp head: the base is responsible for hoisting, power supply and overall operation control; the U-shaped frame realizes horizontal and vertical rotation scanning to change the projection angle; the lamp head integrates the function of changing a variety of lighting effects.

[0004] At present, stage lighting fixtures are generally installed on stage trusses by inverted hanging or side hanging. For the rotating moving parts of the U-shaped frame of the lighting fixture, in addition to ensuring the normal operation of the lighting fixture, safety is also very important. However, the load-bearing moving parts of existing stage lighting fixtures are mostly fixed by screws, nuts or retaining rings, which poses a safety hazard of screws loosening or falling off.

[0005] Therefore, it is urgent to provide a U-shaped frame stepless rotation mechanism of a moving head stage light with multiple protections to solve the above technical problems. Summary of the invention

[0006] In view of the problems in the related art, the utility model proposes a U-shaped frame stepless rotation mechanism of a shaking head stage light with multiple protections, which further optimizes the load-bearing performance and connection stability performance of the stage light at the rotating connection part.

[0007] The utility model is achieved in this way:

[0008] A U-shaped frame stepless rotation mechanism of a moving head stage light with multiple protections, comprising a chassis, and a U-shaped bracket arranged above the chassis and hinged to the chassis, wherein both ends of the U-shaped bracket are connected to a lamp holder;

[0009] Also includes connecting shaft kit and anti-drop center column;

[0010] The connecting shaft set is provided with a limiting channel running through both ends; the bottom of the connecting shaft set is provided with a plurality of fixing holes; and a ring-shaped limiting step is formed along the bottom protrusion of the outer peripheral side of the anti-slip center column;

[0011] The top of the chassis is provided with a connection port, and the outer periphery of the connection port is provided with a plurality of openings; the connection shaft kit is vertically arranged above the connection port, the openings correspond to the fixing holes one by one, and fixing screws are passed through the openings and the fixing holes from bottom to top in sequence, so that the connection shaft kit and the chassis are fixedly connected;

[0012] The radial dimension of the outer peripheral side of the anti-detachment center column is consistent with the radial dimension of the limiting channel; the top of the anti-detachment center column passes through the connecting port and the limiting channel in sequence from bottom to top, and is hinged to the U-shaped bracket; the upper side surface of the limiting step is pressed against the bottom end of the fixing screw.

[0013] The limiting step can prevent the fixing screws from falling off; the connecting shaft kit and the anti-drop center column are the connection and load-bearing parts of the chassis and U-shaped bracket; the cooperation between the two provides multiple protections and stable support for the connection between the chassis and the U-shaped bracket, avoiding the loosening, separation and falling off of the chassis and the U-shaped bracket at the load-bearing and connection parts.

[0014] As a further optimization of the above solution, it also includes an anti-loosening screw; the anti-loosening screw passes through the limiting step from bottom to top and abuts against the lower side surface of the chassis at the periphery of the connecting port.

[0015] The anti-loosening screws further strengthen the stable connection between the anti-loosening center column and the chassis to prevent the fixing screws from loosening or falling off.

[0016] As a further optimization of the above scheme, a mounting groove with an opening facing downward is provided at the bottom of the U-shaped bracket; a rotating pulley and a driving unit are provided inside the U-shaped bracket, the rotating pulley is rotatably connected to the U-shaped bracket, and the driving unit is fixedly connected to the U-shaped bracket; the output end of the driving unit is drivingly connected to the rotating pulley;

[0017] The top of the anti-dropping center column passes through the mounting slot and is fixedly connected to the rotating pulley; the rotating pulley is also fixedly connected to the connecting shaft kit.

[0018] The rotating pulley, the anti-dropping fixing column and the chassis are fixedly connected; since the rotating pulley and the U-shaped bracket are not fixed, but the driving unit and the U-shaped bracket are fixed, the rotating pulley rotates relative to the U-shaped bracket under the action of the driving unit, and the U-shaped bracket also rotates relative to the chassis.

[0019] As a further optimization of the above solution, an opening is provided at the bottom of the rotating pulley, and an internal thread is provided at the opening; an external thread is provided at the top of the outer peripheral side of the anti-slip center column; the internal thread and the external thread cooperate with each other.

[0020] As a further optimization of the above solution, it also includes a connecting seat and a bearing;

[0021] The interior of the connecting seat is hollow and both ends are open; the connecting seat is fixedly connected to the bottom of the mounting groove; the bearing includes at least one; the bearing includes an inner ring and an outer ring; the outer ring is connected to the inner circumference of the connecting seat; the inner ring is connected to the outer circumference of the connecting shaft kit or / and the outer circumference of the rotating pulley.

[0022] Use bearings and connectors to improve the smoothness of the U-shaped bracket's rotation relative to the chassis.

[0023] As a further optimization of the above solution, the bearing includes two, an upper bearing and a lower bearing respectively arranged at the upper and lower ends of the connecting seat; a sealing ring is provided at the outer connection between the upper bearing and the upper end of the connecting seat;

[0024] An oil seal is also provided in the connecting seat. The oil seal is provided on the lower side of the lower bearing and is located at the connection between the lower bearing and the connecting seat.

[0025] Both sealing rings and oil seals are used to improve the waterproof performance between the connection seat and the bearing.

[0026] As a further optimization of the above solution, a washer is further provided between the upper bearing and the lower bearing, including an inner washer and an outer washer;

[0027] The inner washer is connected between the inner ring of the upper bearing and the inner ring of the lower bearing;

[0028] The outer washer is connected between the outer ring of the upper bearing and the outer ring of the lower bearing.

[0029] The inner washer and the outer washer are used to separate the upper bearing and the lower bearing, and do not affect the effect of the bearing on reducing friction between the connecting seat and the connecting shaft kit.

[0030] As a further optimization of the above scheme, it also includes a conductive slip ring; the anti-slip center column has a hollow pipe with openings at both ends; a raised fixing boss is provided along the outer peripheral side of the conductive slip ring;

[0031] The conductive slip ring partially extends into the pipeline, and the fixed boss is fixedly connected to the anti-slip center column or the rotating pulley.

[0032] The internal circuit of the stage light needs to extend to the inside of the chassis and the U-shaped bracket. Since the chassis and the U-shaped bracket will rotate relative to each other, directly connecting them with conventional lines will cause winding and knotting during the rotation process. The use of conductive slip rings can effectively avoid line problems during rotation.

[0033] As a further optimization of the above solution, a magnetic unit is provided at one end of the top edge of the rotating pulley;

[0034] The U-shaped bracket is also provided with a Hall positioning unit above the rotating pulley.

[0035] The magnetic unit is a component with magnetic properties, such as a magnet, a magnetic bead, etc.

[0036] The Hall Effect Positioning Unit is an electronic component that uses the Hall Effect principle to achieve position detection or positioning functions.

[0037] The magnetic unit cooperates with the Hall positioning unit to facilitate the initial positioning of the rotating pulley relative to the U-shaped bracket.

[0038] As a further optimization of the above solution, the bottom of the outer peripheral side of the connecting shaft sleeve is also provided with a protruding annular support step; the fixing holes are evenly distributed on the support step;

[0039] A sealing member is also provided at the bottom of the supporting step, and the sealing member is in contact with the chassis below.

[0040] The support step further enhances the weighing performance of the connecting shaft kit, and the seal can improve the waterproof performance between the connecting shaft kit and the chassis connection.

[0041] The beneficial effects are as follows:

[0042] The utility model provides a U-shaped frame infinitely rotating mechanism of a moving head stage light with multiple protections, which mainly includes a connecting shaft kit and an anti-slip center column, wherein a limited step is specially designed at the bottom of the anti-slip center column, and multiple components cooperate with each other to realize the rotatable connection between the U-shaped bracket and the chassis at the bottom of the bracket, and significantly improve the load-bearing performance of the connection part. Compared with the prior art, the connecting structural parts of this mechanism are not easy to loosen, and the screws used for the connecting structural parts are also more stable and not easy to fall off. On this basis, anti-loosening screws are also applied at the limited step to further enhance the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the structure of a stage lamp provided by an embodiment of the utility model (without a lamp holder);

[0044] Figure 2 for Figure 1 Explosion diagram of

[0045] Figure 3 for Figure 1 Schematic diagram of the cross-section structure;

[0046] Figure 4 for Figure 3 A local enlarged schematic diagram at point a;

[0047] Figure 5 for Figure 3Schematic diagram of part of the structure (part inside the connecting seat);

[0048] Figure 6 for Figure 5 A local enlarged schematic diagram at point b.

[0049] Reference numerals:

[0050] 1. Chassis;

[0051] 2. U-shaped bracket; 2-1. Mounting slot; 2-2. Rotating pulley; 2-2-1. Internal thread; 2-3. Driving unit; 2-4. Synchronous belt;

[0052] 3. Connecting shaft kit; 3-1. Support step; 3-2. Seal;

[0053] 4. Anti-drop center column; 4-1. Limiting step; 4-2. External thread;

[0054] 5. Fixing screw; 6. Anti-loosening screw; 7. Connecting seat;

[0055] 8. Upper bearing; 9. Lower bearing; 10. Inner washer;

[0056] 11. Outer gasket; 12. Sealing ring; 13. Oil seal;

[0057] 14. Conductive slip ring; 14-1. Fixed boss; 15. Magnetic unit; 16. Hall positioning unit. DETAILED DESCRIPTION

[0058] 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 of 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.

[0059] like Figures 1 to 6 As shown, this embodiment provides a U-shaped frame stepless rotation mechanism of a moving head stage light with multiple protections, comprising a chassis 1, and a U-shaped bracket 2 arranged above the chassis 1 and hinged to the chassis 1;

[0060] The top of the chassis 1 is provided with a connection port, and the periphery of the connection port is provided with a plurality of openings;

[0061] Both ends of the U-shaped bracket 2 are connected to the lamp holder; in this embodiment, a mounting groove 2-1 with an opening facing downward is provided at the bottom of the U-shaped bracket 2, and an opening is provided at the bottom of the mounting groove 2-1; a rotating pulley 2-2 and a driving unit 2-3 are provided inside the U-shaped bracket 2, the rotating pulley 2-2 is rotatably connected to the U-shaped bracket 2, and the driving unit 2-3 is fixedly connected to the U-shaped bracket 2;

[0062] Specifically, the driving unit 2-3 is a motor; a transmission tooth portion is provided on the rotating pulley 2-2; the output end of the motor and the transmission tooth portion are connected to each other through a synchronous belt 2-4;

[0063] The rotating pulley 2-2 is arranged in a stepped manner, including a transmission part and a fixing part; the transmission part and the fixing part are stacked up and down, and the radial dimension of the transmission part is larger than the radial dimension of the fixing part; wherein the transmission tooth part is located on the outer peripheral side of the transmission part; the rotating pulley 2-2 is located in the U-shaped bracket 2 as a whole, and only the fixing part is partially exposed at the opening of the mounting groove 2-1;

[0064] The interior of the rotating pulley 2-2 is hollow, and also has an opening at the bottom of the fixed portion, and the inner circumference of the opening is provided with an internal thread 2-2-1;

[0065] The above mechanism also includes a connecting shaft set 3 and an anti-drop center column 4;

[0066] In this embodiment, the connecting shaft sleeve 3 is provided with a limiting channel running through both ends; the outer peripheral bottom of the connecting shaft sleeve 3 is also provided with a protruding annular support step 3-1; a plurality of fixing holes are evenly distributed on the support step 3-1; and a sealing member 3-2 is also provided at the bottom of the support step 3-1;

[0067] During assembly, the connecting shaft kit 3 is vertically arranged above the connecting port, the openings correspond to the fixing holes one by one, and the fixing screws 5 are passed through the openings and the fixing holes from bottom to top in sequence to fix the connecting shaft kit 3 and the chassis 1 in connection; at this time, the sealing member 3-2 is fitted between the upper side of the chassis 1 and the bottom of the connecting shaft kit 3 to improve the waterproof performance of the connection between the connecting shaft kit 3 and the chassis 1;

[0068] In this embodiment, the main body of the anti-slip center column 4 is a columnar structure; a ring-shaped limiting step 4-1 is formed along the bottom of the outer peripheral side of the anti-slip center column 4; an external thread 4-2 is provided on the top of the outer peripheral side of the anti-slip center column 4; the anti-slip center column 4 has a vertically arranged, hollow pipe, and both ends of the pipe are open;

[0069] The radial dimension of the outer peripheral side of the main body of the anti-dropping center column 4 is consistent with the radial dimension of the limiting channel;

[0070] During assembly, the top of the anti-dropping center column 4 passes through the connection port and the limiting channel from bottom to top in sequence, and the top of the anti-dropping center column 4 passes through the installation groove 2-1, and the internal thread 2-2-1 and the external thread 4-2 cooperate with each other to fix the anti-dropping center column 4 with the rotating pulley 2-2;

[0071] On this basis, the rotating pulley 2-2 is also fixedly connected to the connecting shaft set 3. The practicable manner includes providing a plurality of vertically arranged connecting grooves on the top of the connecting shaft set 3, using screws to pass through the rotating pulley 2-2 from top to bottom and spirally connect with the connecting grooves, so as to further strengthen the firm connection of the rotating pulley 2-2.

[0072] After the anti-loosening center column 4 is connected to the rotating pulley 2-2, the upper side of the limiting step 4-1 presses against the bottom end of the fixing screw 5. In this embodiment, an anti-loosening screw 6 is also included; the anti-loosening screw 6 passes through the limiting step 4-1 from bottom to top and presses against the lower side of the chassis 1 at the periphery of the connection port.

[0073] The anti-loosening screw 6 further strengthens the stable connection between the anti-loosening center column 4 and the chassis 1, that is, the rotating pulley 2-2, the chassis 1 and the anti-loosening screw 6 cooperate with each other to firmly clamp the anti-loosening center column 4 and the connecting shaft kit 3 in the middle to prevent the fixing screw 5 from loosening or falling off.

[0074] The limiting step 4-1 can prevent the fixing screw 5 from falling off; the connecting shaft kit 3 and the anti-drop center column 4 are the connection and load-bearing components of the chassis 1 and the U-shaped bracket 2; the cooperation between the two provides multiple protections and stable support for the connection between the chassis 1 and the U-shaped bracket 2, avoiding the loosening, separation and falling off of the chassis 1 and the U-shaped bracket 2 at the load-bearing and connection parts.

[0075] When the stage light is working as a whole, since the rotating pulley 2-2, the anti-slip fixing column and the chassis 1 are fixedly connected, the rotating pulley 2-2 and the U-shaped bracket 2 are not fixed, and the driving unit 2-3 and the U-shaped bracket 2 are fixed, the rotating pulley 2-2 rotates relative to the U-shaped bracket 2 under the action of the driving unit 2-3, and the U-shaped bracket 2 rotates relative to the chassis 1.

[0076] In this embodiment, it also includes a connecting seat 7 and a bearing;

[0077] The interior of the connecting base 7 is hollow and open at both ends, presenting a cylindrical tube set; the connecting base 7 is fixedly connected to the bottom of the mounting groove 2-1; specifically, a plurality of vertically arranged connecting grooves are provided on the top of the connecting base 7, and screws are used to pass through the chassis 1 from top to bottom and are spirally connected to the connecting grooves to achieve a firm connection between the connecting base 7 and the chassis 1.

[0078] In this embodiment, there are two bearings, namely, an upper bearing 8 and a lower bearing 9, which are arranged at the upper and lower ends of the connecting seat 7; the bearing includes an inner ring and an outer ring; the outer ring is connected to the inner circumference of the connecting seat 7; the inner ring is connected to the outer circumference of the connecting shaft set 3 and the outer circumference of the rotating pulley 2-2. It is equivalent to that both bearings are sleeved outside the connecting shaft set 3, and the connecting seat 7 is sleeved outside the two bearings. The use of bearings and connecting seat 7 improves the smoothness of the rotation of the U-shaped bracket 2 relative to the chassis 1 and reduces friction.

[0079] A gasket is also provided between the upper bearing 8 and the lower bearing 9, including an inner gasket 10 and an outer gasket 11; the inner gasket 10 is connected between the inner ring of the upper bearing 8 and the inner ring of the lower bearing 9; the outer gasket 11 is connected between the outer ring of the upper bearing 8 and the outer ring of the lower bearing 9. The inner gasket 10 and the outer gasket 11 are both used to separate the upper bearing 8 and the lower bearing 9, and do not affect the effect of the bearing on reducing friction between the connecting seat 7 and the connecting shaft set 3.

[0080] A sealing ring 12 is provided at the outer connection between the upper bearing 8 and the upper end of the connecting seat 7; an oil seal 13 is also provided in the connecting seat 7, and the oil seal 13 is provided at the lower side of the lower bearing 9 and at the connection between the lower bearing 9 and the connecting seat 7. The sealing ring 12 and the oil seal 13 are both used to improve the waterproof performance between the connecting seat 7 and the bearing.

[0081] In this embodiment, a conductive slip ring 14 is further included; a protruding fixed boss 14-1 is provided along the outer circumference of the conductive slip ring 14;

[0082] The conductive slip ring 14 partially extends into the pipeline, and the fixed boss 14-1 is fixedly connected to the anti-slip center column 4 or the rotating pulley 2-2.

[0083] The internal circuit of the stage light needs to extend to the inside of the chassis 1 and the U-shaped bracket 2. Since the chassis 1 and the U-shaped bracket 2 can rotate relative to each other, directly connecting them with conventional lines will cause winding and knotting during the rotation process. The use of a conductive slip ring 14 can effectively avoid line problems during rotation.

[0084] In this embodiment, a magnetic unit 15 is provided at one end of the top edge of the rotating pulley 2 - 2 , specifically a magnetic bead;

[0085] The U-shaped bracket 2 is also provided with a Hall positioning unit 16 above the rotating pulley 2-2. The Hall positioning unit 16 is an electronic component that uses the Hall effect principle to realize position detection or positioning functions.

[0086] Since the transmission of the conductive slip ring 14, the rotating pulley 2-2 and the motor are all stepless rotation, the magnetic unit 15 is used in conjunction with the Hall positioning unit 16 to facilitate positioning the initial position of the rotating pulley 2-2 relative to the U-shaped bracket 2.

[0087] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections, comprising a chassis, and a U-shaped bracket arranged above the chassis and hinged to the chassis, wherein both ends of the U-shaped bracket are connected to the lamp holder; characterized in that: Also includes connecting shaft kit and anti-drop center column; The connecting shaft set is provided with a limiting channel running through both ends; the bottom of the connecting shaft set is provided with a plurality of fixing holes; and a ring-shaped limiting step is formed along the bottom protrusion of the outer peripheral side of the anti-slip center column; The top of the chassis is provided with a connection port, and the outer periphery of the connection port is provided with a plurality of openings; the connection shaft kit is vertically arranged above the connection port, the openings correspond to the fixing holes one by one, and fixing screws are passed through the openings and the fixing holes from bottom to top in sequence, so that the connection shaft kit and the chassis are fixedly connected; The radial dimension of the outer peripheral side of the anti-detachment center column is consistent with the radial dimension of the limiting channel; the top of the anti-detachment center column passes through the connecting port and the limiting channel in sequence from bottom to top, and is hinged to the U-shaped bracket; the upper side surface of the limiting step is pressed against the bottom end of the fixing screw.

2. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 1 is characterized by: It also includes an anti-loosening screw; the anti-loosening screw passes through the limiting step from bottom to top and abuts against the lower side surface of the chassis at the periphery of the connecting port.

3. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 1 is characterized by: The bottom of the U-shaped bracket is provided with a mounting groove with an opening facing downward; a rotating pulley and a driving unit are provided inside the U-shaped bracket, the rotating pulley is rotatably connected to the U-shaped bracket, and the driving unit is fixedly connected to the U-shaped bracket; the output end of the driving unit is drivingly connected to the rotating pulley; The top of the anti-dropping center column passes through the mounting slot and is fixedly connected to the rotating pulley; the rotating pulley is also fixedly connected to the connecting shaft kit.

4. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 3 is characterized by: The bottom of the rotating pulley is provided with an opening, and the opening is provided with an internal thread; the top of the outer peripheral side of the anti-slip center column is provided with an external thread; the internal thread and the external thread cooperate with each other.

5. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 3 is characterized by: Also includes a connecting seat and a bearing; The interior of the connecting seat is hollow and both ends are open; the connecting seat is fixedly connected to the bottom of the mounting groove; the bearing includes at least one; the bearing includes an inner ring and an outer ring; the outer ring is connected to the inner circumference of the connecting seat; the inner ring is connected to the outer circumference of the connecting shaft kit or / and the outer circumference of the rotating pulley.

6. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 5 is characterized by: The bearings include two, an upper bearing and a lower bearing, which are arranged at the upper and lower ends of the connecting seat; a sealing ring is provided at the outer connection between the upper bearing and the upper end of the connecting seat; An oil seal is also provided in the connecting seat. The oil seal is provided on the lower side of the lower bearing and is located at the connection between the lower bearing and the connecting seat.

7. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 6 is characterized by: A washer is also provided between the upper bearing and the lower bearing, including an inner washer and an outer washer; The inner washer is connected between the inner ring of the upper bearing and the inner ring of the lower bearing; The outer washer is connected between the outer ring of the upper bearing and the outer ring of the lower bearing.

8. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 3 is characterized by: It also includes a conductive slip ring; the anti-slip center column has a hollow pipe with two ends of the pipe open; a raised fixing boss is provided along the outer peripheral side of the conductive slip ring; The conductive slip ring partially extends into the pipeline, and the fixed boss is fixedly connected to the anti-slip center column or the rotating pulley.

9. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 3 is characterized by: A magnetic unit is provided at one end of the top edge of the rotating pulley; The U-shaped bracket is also provided with a Hall positioning unit above the rotating pulley.

10. The U-shaped frame stepless rotating mechanism of a moving head stage light with multiple protections according to claim 1, characterized in that: The bottom of the outer peripheral side of the connecting shaft sleeve is also provided with an annular supporting step formed by a protrusion; the fixing holes are evenly distributed on the supporting step; A sealing member is also provided at the bottom of the supporting step, and the sealing member is in contact with the chassis below.

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