CN219120487U - High-precision rotary positioning stage lamp - Google Patents

Abstract

The utility model discloses a high-precision rotary positioning stage lamp, which comprises a lamp holder, a supporting arm for supporting the lamp holder to rotate and a case for supporting the supporting arm to rotate; the motor driving shaft for driving the lamp cap or the supporting arm to rotate is connected with an elliptical driving wheel, a flexible first gear with external teeth is sleeved outside the elliptical driving wheel, a rigid second gear with internal teeth is sleeved outside the first gear, the inner diameter of the second gear is larger than the outer diameter of the first gear, the number of teeth of the second gear is larger than that of the first gear, two ends of the elliptical driving wheel in the long axis direction prop against the first gear to deform and then are meshed with the second gear, and the second gear is fixed relative to a base body of the motor; the motor seat is fixed on the chassis, the first gear is connected with the supporting arm, or the motor seat is fixed on the supporting arm, the first gear is connected with the lamp cap/chassis, or the motor seat is fixed on the lamp cap, and the first gear is connected with the supporting arm. The rigid transmission part is directly utilized for transmission, the elastic synchronous belt is omitted, and positioning errors caused by elastic deformation of the elastic transmission part are avoided.

Description

High-precision rotary positioning stage lamp

Technical Field

The utility model relates to the technical field of stage lamps, in particular to a high-precision rotary positioning stage lamp.

Background

Stage lamp is general including the lamp holder that sends the light beam, support the rotatory support arm of lamp holder and support the rotatory quick-witted case of support arm, current rotary drive is motor connection little synchronizing wheel generally, the rotating member is connected big synchronizing wheel, connect through the hold-in range between little synchronizing wheel and the big synchronizing wheel, utilize the radius difference between little synchronizing wheel and the big synchronizing wheel to realize the deceleration function, the hold-in range is general rubber or plastics material, because it is atress in the transmission process is great, can be stretched by elasticity, consequently often can cause the scanning location inaccuracy of lamp holder, influence the stability of product, make the hold-in range fracture even.

Disclosure of Invention

In order to overcome at least one defect in the prior art, the utility model provides a high-precision rotary positioning stage lamp, which can omit an elastic synchronous belt, directly utilizes the transmission of a rigid transmission piece and avoids the positioning error caused by the elastic deformation of the elastic transmission piece.

In order to solve the technical problems, the utility model adopts the following technical scheme: a high-precision rotary positioning stage lamp comprises a lamp holder, a supporting arm for supporting the lamp holder to rotate and a case for supporting the supporting arm to rotate;

the motor is used for driving the lamp cap or the supporting arm to rotate, a driving shaft of the motor is connected with an elliptical driving wheel, a flexible first gear with external teeth is sleeved outside the elliptical driving wheel, a rigid second gear with internal teeth is sleeved outside the first gear, the inner diameter of the second gear is larger than the outer diameter of the first gear, the number of teeth of the second gear is larger than the number of teeth of the first gear, two ends of the elliptical driving wheel in the long axis direction prop against the first gear to deform and then mesh with the second gear, and the second gear is fixed relative to a base of the motor;

the motor is characterized in that the base body of the motor is fixed on the chassis, the first gear is connected with the supporting arm, or the base body of the motor is fixed on the supporting arm, the first gear is connected with the lamp cap/the chassis, or the base body of the motor is fixed on the lamp cap, and the first gear is connected with the supporting arm.

Because the inner diameter of the second gear is larger than the outer diameter of the first gear and the number of teeth of the second gear is larger than the number of teeth of the first gear, when the elliptical driving wheel is installed in the first gear, the section of the first gear is forced to be changed into an ellipse from the original circular shape, teeth near the two ends of the long axis of the first gear are completely meshed with the teeth of the second gear, teeth near the two ends of the short axis of the first gear are completely separated from the second gear, and the teeth of other sections on the circumference of the first gear are in a transition state of meshing and separation. When the elliptical driving wheel continuously rotates towards the positive direction, the deformation of the first gear is changed continuously, so that the meshing state of the first gear and the second gear is also changed continuously, and the meshing, meshing out, disengaging and re-meshing … … are performed repeatedly, so that the first gear rotates slowly relative to the second gear along the direction opposite to the elliptical driving wheel. Thus, when the elliptical driving wheel rotates forward for one circle, the first gear rotates reversely relative to the second gear by a tooth number difference. The rigid transmission part is directly utilized for transmission, the elastic synchronous belt is omitted, positioning errors caused by elastic deformation of the elastic transmission part are avoided, and positioning accuracy is improved.

Further, the oval driving wheel is a ball bearing with an inner ring and an outer ring, a driving shaft of the motor is connected with the inner ring of the ball bearing, and the first gear is sleeved outside the outer ring of the ball bearing. By means of the bearing structure, friction between the elliptical driving wheel and the first gear can be reduced, and rotation of the elliptical driving wheel is smoother.

Further, the number of teeth of the second gear is 2 different from the number of teeth of the first gear. Thus, when the elliptical driving wheel rotates forward for one revolution, the first gear rotates reversely for 2 teeth positions relative to the second gear.

Further, the driving shaft of the motor is provided with a first hole along the length direction of the driving shaft, the first hole penetrates through two ends of the driving shaft, the seat body of the motor is provided with a through avoidance hole corresponding to the driving shaft, and the oval driving wheel and the first gear are provided with through holes corresponding to the first hole. The first hole, the avoidance hole and the through hole form a wire passing hole together, so that the connection of the lamp cap and the support arm or the power line and the signal line between the support arm and the chassis pass through conveniently.

Further, the motor further comprises a central shaft connected with the first gear, the driving shaft of the motor is provided with a first hole along the length direction of the central shaft, and the central shaft is inserted into the first hole and locked with the driving shaft. The first gear is fixed on the central shaft, and the central shaft is inserted into a first hole of a driving shaft of the motor, so that the rotation of the first gear and a connecting piece (the supporting arm, the lamp holder or the chassis) can be supported.

Further, the end part of the central shaft penetrating out of the driving shaft is connected with a code wheel of an encoder, and the encoder for detecting the angle of the code wheel is fixed relative to the motor. The encoder detects the rotation angle of the code wheel, so that the rotation angle of the first gear, namely the rotation angle of a connecting piece (the supporting arm, the lamp cap or the chassis) connected with the first gear is known.

Further, the end part of the central shaft penetrating out of the driving shaft is connected with a mounting seat fixed with magnetic sensitivity, and a detector for detecting the magnetic sensitivity is fixed relative to the motor. The detector detects the magnetic sensitivity, so that the initial position of the first gear, namely the initial position of a connecting piece (the supporting arm, the lamp cap or the chassis) connected with the first gear is determined.

Further, the lamp holder is characterized by further comprising a support bearing, wherein an outer ring of the support bearing is fixed relative to the second gear, two sides of an inner ring of the support bearing are respectively connected with a fixed seat and the first gear, and one side, away from the first gear, of the fixed seat is connected with the support arm, the lamp holder or the chassis. The first gear is connected with a connecting piece (the supporting arm, the lamp holder or the case) by the fixing seat, and the rotation of the first gear and the connecting piece (the supporting arm, the lamp holder or the case) is supported by the supporting bearing.

Further, the device also comprises a bracket, wherein a fixing piece extends out of the outer side of the second gear and is fixed with the bracket. Thereby realizing the fixation of the motor, the second gear, the elliptical driving wheel and the first gear.

Further, a light source for emitting light beams and an effect piece for intercepting the light beams to generate light effects are arranged in the lamp holder, the lamp holder further comprises a light emitting lens arranged at a light emitting opening of the lamp holder, and the light beams passing through the effect piece are finally emitted from the light emitting lens. By rotating the lamp head relative to the support arm and/or rotating the support arm relative to the chassis, projection of the beam emitted by the lamp head from the light-emitting mirror into any direction is achieved.

Drawings

FIG. 1 is a schematic diagram of the explosion structure of the high precision rotational positioning stage lamp of the present utility model.

Fig. 2 is a schematic diagram of an exploded structure of the motor, elliptical driving wheel, first gear and second gear of the present utility model.

Fig. 3 is a schematic cross-sectional view of the motor, elliptical drive wheel, first gear and second gear of the present utility model after assembly.

Fig. 4 is a schematic view of the elliptical drive wheel of the present utility model in a first position.

Fig. 5 is a schematic view of the elliptical drive wheel of the present utility model in a second position.

In the figure:

100. a lamp base; 110. a cutter; 120. an atomizing mirror; 130. a magnifying glass; 200. a support arm; 300. a chassis; 400. a motor; 410. a base; 411. avoidance holes; 420. a drive shaft; 421. a first hole; 422. a first connection base; 510. an elliptical drive wheel; 520. a first gear; 530. a second gear; 531. a fixing piece; 540. a through hole; 550. a central shaft; 551. a second hole; 552. a second connecting seat; 610. a code wheel; 620. an encoder; 710. magnetically sensitive; 720. a detector; 730. a mounting base; 800. a support bearing; 810. a fixing seat; 900. and (3) a bracket.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

Referring to fig. 1 to 5, the present utility model provides a high-precision rotary positioning stage lamp, which comprises a lamp cap 100, a supporting arm 200 for supporting the lamp cap 100 to rotate, and a case 300 for supporting the supporting arm 200 to rotate;

the motor 400 is used for driving the lamp cap 100 or the supporting arm 200 to rotate, the driving shaft 420 of the motor 400 is connected with the elliptical driving wheel 510, the elliptical driving wheel 510 is sleeved with a flexible first gear 520 with external teeth, the first gear 520 is sleeved with a rigid second gear 530 with internal teeth, the inner diameter of the second gear 530 is larger than the outer diameter of the first gear 520, the number of teeth of the second gear 530 is larger than the number of teeth of the first gear 520, two ends of the elliptical driving wheel 510 in the long axis direction prop against the first gear 520 to deform and then mesh with the second gear 530, and the second gear 530 is fixed relative to the base 410 of the motor 400;

the base 410 of the motor 400 is fixed to the chassis 300, the first gear 520 is connected to the support arm 200, or the base 410 of the motor 400 is fixed to the support arm 200, the first gear 520 is connected to the base 100/the chassis 300, or the base 410 of the motor 400 is fixed to the base 100, and the first gear 520 is connected to the support arm 200.

Because the inner diameter of the second gear 530 is larger than the outer diameter of the first gear 520 and the number of teeth of the second gear 530 is larger than the number of teeth of the first gear 520, when the elliptical driving wheel 510 is installed in the first gear 520, the cross section of the first gear 520 is forced to be changed from the original circular shape to the elliptical shape, the teeth near both ends of the long axis of the first gear 520 are completely engaged with the teeth of the second gear 530, the teeth near both ends of the short axis are completely disengaged from the second gear 530, and the teeth of other sections on the circumference of the first gear 520 are in a transition state of engagement and disengagement. When the elliptical driving wheel 510 continuously rotates in the forward direction, the deformation of the first gear 520 is continuously changed, so that the engagement state of the first gear 520 and the second gear 530 is also continuously changed, and the engagement, disengagement, and re-engagement … … are repeatedly performed, so that the first gear 520 is slowly rotated in the opposite direction to the elliptical driving wheel 510 with respect to the second gear 530. Thus, when the elliptical driving wheel 510 rotates one revolution in the forward direction, the first gear 520 rotates in the reverse direction with respect to the second gear 530 by a tooth number difference. The rigid transmission part is directly utilized for transmission, the elastic synchronous belt is omitted, positioning errors caused by elastic deformation of the elastic transmission part are avoided, and positioning accuracy is improved.

Since the cabinet 300 of the stage lamp is generally placed on the ground or fixed on the truss, the cabinet 300 is fixed, and therefore when the base 410 of the motor 400 is fixed to the cabinet 300 and the first gear 520 is connected to the support arm 200, the base 410 of the motor 400 is fixed relative to the cabinet 300, and the support arm 200 is driven to rotate by the driving shaft 420 of the motor 400; when the base 410 of the motor 400 is fixed to the supporting arm 200 and the first gear 520 is connected to the lamp cap 100, the base 410 of the motor 400 is fixed to the supporting arm 200, the lamp cap 100 is driven to rotate by the driving shaft 420 of the motor 400, and when the base 410 of the motor 400 is fixed to the supporting arm 200 and the first gear 520 is connected to the chassis 300, the base 410 of the motor 400 is fixed to the supporting arm 200, and the chassis 300 is fixed, so that the supporting arm 200 rotates together with the base 410 of the motor 400; when the base 410 of the motor 400 is fixed to the base 100 and the first gear 520 is connected to the supporting arm 200, the base 410 of the motor 400 is fixed to the base 100, and the supporting arm 200 is connected to the chassis 300, so that the base 100 will rotate together with the base 410 of the motor 400.

Referring to fig. 1, in this embodiment, the motor comprises 2 motors 400, wherein a base 410 of one motor 400 is fixed to the chassis 300, the first gear 520 is connected to the supporting arm 200, the base 410 of the other motor 400 is fixed to the supporting arm 200, and the first gear 520 is connected to the lamp cap 100.

Preferably, the driving shaft 420 is connected with the elliptical driving wheel 510 through a first connecting seat 422, and the first connecting seat 422 is locked to the driving shaft 420 through a screw perpendicular to the driving shaft 420.

In the preferred embodiment of the present utility model, as shown in fig. 2 to 5, the elliptical driving wheel 510 is a ball bearing having an inner ring and an outer ring, the driving shaft 420 of the motor 400 is connected to the inner ring of the ball bearing, and the first gear 520 is sleeved outside the outer ring of the ball bearing. With the bearing structure, friction between the elliptical driving wheel 510 and the first gear 520 can be reduced, so that the rotation of the elliptical driving wheel 510 is smoother.

Preferably, the oval driving wheel 510 is sleeved outside the first connecting seat 422, and the inner ring of the oval driving wheel 510 is locked to the first connecting seat 422.

In this embodiment, the inner ring of the elliptical driving wheel 510 is elliptical, the outer ring of the elliptical driving wheel 510 is flexible, the balls of the two are identical, the outer ring of the elliptical driving wheel 510 is deformed into an ellipse under the contact of the inner ring of the elliptical driving wheel 510, and the deformation of the outer ring is continuously changed along with the rotation of the inner ring, but is always kept in an elliptical shape, so that the first gear 520 is contacted to be deformed into an ellipse, and the deformation is also continuously changed. In a preferred embodiment of the present utility model, the number of teeth of the second gear 530 is 2 different from the number of teeth of the first gear 520. Thus, when the elliptical driving wheel 510 rotates one revolution in the forward direction, the first gear 520 rotates 2 teeth in the reverse direction with respect to the second gear 530. Thereby playing a role in decelerating and improving the final output torque. As shown in fig. 4 to 5, the position of the black spot provided on the first gear 520 is changed, and when the elliptical driving wheel 510 is rotated clockwise by approximately 90 °, the black spot is withdrawn from one slot of the second gear 530 and moves in a counterclockwise direction.

In the preferred embodiment of the present utility model, as shown in fig. 2 and 3, the driving shaft 420 of the motor 400 has a first hole 421 along the length direction thereof, the first hole 421 penetrates through two ends of the driving shaft 420, the base 410 of the motor 400 is provided with a through avoiding hole 411 corresponding to the driving shaft 420, and the elliptical driving wheel 510 and the first gear 520 are provided with through holes 540 corresponding to the first hole 421. The first hole 421, the avoiding hole 411 and the through hole 540 form a wire passing hole together, so as to facilitate the connection of the lamp cap 100 with the supporting arm 200 or the power line and the signal line between the supporting arm 200 and the chassis 300 to pass through.

When the elliptical driving wheel 510 is a ball bearing having an inner ring and an outer ring, the center of the inner ring forms the through hole 540.

In a preferred embodiment of the present utility model, the motor 400 further includes a central shaft 550 connected to the first gear 520, the driving shaft 420 of the motor 400 has a first hole 421 along a length direction thereof, and the central shaft 550 is inserted into the first hole 421 and is locked with the driving shaft 420. The first gear 520 is fixed to the central shaft 550, and the central shaft 550 is inserted into the first hole 421 of the driving shaft 420 of the motor 400, so that the rotation of the first gear 520 and the connector (the supporting arm 200, the base 100, or the housing 300) can be supported.

In this embodiment, the central shaft 550 has a second hole 551 along its length direction, through which power lines and signal lines connecting the lamp cap 100 and the support arm 200 or between the support arm 200 and the chassis 300 pass.

In this embodiment, the central shaft 550 is connected to the first gear 520 through a second connecting seat 552, and a plurality of screws extending along the length direction of the central shaft 550 sequentially penetrate through the first gear 520, the second connecting seat 552 and the central shaft 550, so as to connect 3 pieces together, and the second connecting seat 552 may be adapted to the shape of the first gear 520, so that the first gear 520 is convenient to fix.

In the preferred embodiment of the present utility model, as shown in fig. 1, the end of the central shaft 550 passing out of the driving shaft 420 is connected to the code wheel 610 of the encoder 620, and the encoder 620 for detecting the angle of the code wheel 610 is fixed with respect to the motor 400. The encoder 620 detects the rotation angle of the code wheel 610, so as to obtain the rotation angle of the first gear 520, that is, the rotation angle of the connector (the support arm 200, the lamp head 100 or the housing 300) connected to the first gear 520.

Alternatively, the code wheel 610 may be of a photoelectric type, a capacitive type or an inductive type, and in this embodiment, the photoelectric type is selected, and the outer periphery thereof is provided with sensing teeth that cooperate with the encoder 620.

In this embodiment, the code wheel 610 is annular, and the power lines and the signal lines connecting the lamp cap 100 and the support arm 200 or between the support arm 200 and the chassis 300 pass through holes formed in the inner periphery of the code wheel 610.

Optionally, the encoder 620 is fixed to the base 410 of the motor 400.

In a preferred embodiment of the present utility model, the end of the central shaft 550 passing through the driving shaft 420 is connected to a mount 730 to which the magnetic sensor 710 is fixed, and a detector 720 for detecting the magnetic sensor 710 is fixed with respect to the motor 400. The detector 720 determines the initial position of the first gear 520, that is, the initial position of the connector (the support arm 200, the lamp head 100 or the cabinet 300) connected to the first gear 520 by detecting the magnetic sensor 710.

In this embodiment, the mounting seat 730 is annular and is sleeved outside the central shaft 550, and the magnetosensitive sensor 710 is disposed on an end surface of the mounting seat 730 along the length direction of the central shaft 550.

In other embodiments, the magneto-sensitive element 710 and the detector 720 may be an electro-optical switch, a mechanical switch, or other inductive switch, as long as the predetermined position is indicated.

In a preferred embodiment of the present utility model, as shown in fig. 2 and fig. 3, a support bearing 800 is further included, an outer ring of the support bearing 800 is fixed relative to the second gear 530, two sides of an inner ring of the support bearing 800 are respectively connected to a fixing base 810 and the first gear 520, and one side of the fixing base 810 away from the first gear 520 is connected to the support arm 200, the lamp cap 100, or the chassis 300. The fixing base 810 is used to connect the first gear 520 with a connector (the supporting arm 200, the lamp cap 100, or the chassis 300), so that the fixing base 810 is used as a pivot axis of the connector, and the supporting bearing 800 is used to support the rotation of the first gear 520 and the connector (the supporting arm 200, the lamp cap 100, or the chassis 300).

In this embodiment, the first gear 520 is in a barrel shape, the teeth are located on an outer side wall of one end, and a bottom plate is disposed on the other end for connecting with the central shaft 550 and the fixing base 810.

In a preferred embodiment of the present utility model, as shown in fig. 1, a bracket 900 is further included, and a fixing piece 531 extends from the outer side of the second gear 530 to be fixed with the bracket 900. Thereby achieving the fixation of the motor 400, the second gear 530, the elliptical driving wheel 510 and the first gear 520.

In this embodiment, the fixing piece 531 extends from the opposite side 2 of the second gear 530 to fix the bracket 900.

In this embodiment, the detector 720 is mounted on the stand 900.

In a preferred embodiment of the present utility model, the lamp cap 100 is provided with a light source for emitting a light beam and an effect member for intercepting the light beam to generate a light effect, and further comprises an optical outlet lens disposed at the light outlet of the lamp cap 100, and the light beam passing through the effect member finally exits from the optical outlet lens. By rotating the lamp head 100 with respect to the support arm 200 and/or rotating the support arm 200 with respect to the chassis 300, a projection of the light beam emitted from the light-emitting mirror by the lamp head 100 into any direction is achieved.

Optionally, the effects are one or more of CMY components, cutter 110, rotary pattern disc, fixed pattern disc, color film disc, fire disc, strobe sheet, atomizer mirror 120, prism, focusing mirror, magnifier 130.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A high-precision rotary positioning stage lamp is characterized in that,

comprises a lamp holder (100), a supporting arm (200) for supporting the lamp holder (100) to rotate and a case (300) for supporting the supporting arm (200) to rotate;

the lamp holder (100) or the supporting arm (200) is driven to rotate, a driving shaft (420) of the motor (400) is connected with an elliptical driving wheel (510), a flexible first gear (520) with external teeth is sleeved outside the elliptical driving wheel (510), a rigid second gear (530) with internal teeth is sleeved outside the first gear (520), the inner diameter of the second gear (530) is larger than the outer diameter of the first gear (520), the number of teeth of the second gear (530) is larger than the number of teeth of the first gear (520), and two ends of the elliptical driving wheel (510) in the long axis direction prop against the first gear (520) to enable the first gear (520) to be meshed with the second gear (530) after being deformed, and the second gear (530) is fixed relative to a base (410) of the motor (400);

the base (410) of the motor (400) is fixed on the chassis (300), the first gear (520) is connected with the supporting arm (200), or the base (410) of the motor (400) is fixed on the supporting arm (200), the first gear (520) is connected with the lamp holder (100)/the chassis (300), or the base (410) of the motor (400) is fixed on the lamp holder (100), and the first gear (520) is connected with the supporting arm (200).

2. The high precision rotational positioning stage lamp of claim 1, wherein the elliptical drive wheel (510) is a ball bearing having an inner ring and an outer ring, the drive shaft (420) of the motor (400) is connected to the inner ring of the ball bearing, and the first gear (520) is sleeved outside the outer ring of the ball bearing.

3. The high precision rotational positioning stage lamp of claim 1, wherein the number of teeth of the second gear (530) differs from the number of teeth of the first gear (520) by 2.

4. The high-precision rotary positioning stage lamp according to claim 1, wherein the driving shaft (420) of the motor (400) is provided with a first hole (421) along the length direction thereof, the first hole (421) penetrates through two ends of the driving shaft (420), the base (410) of the motor (400) is provided with a penetrating avoiding hole (411) corresponding to the driving shaft (420), and the elliptical driving wheel (510) and the first gear (520) are provided with through holes (540) corresponding to the first hole (421).

5. The high precision rotational positioning stage lamp of claim 1, further comprising a central shaft (550) connected to the first gear (520), the drive shaft (420) of the motor (400) having a first hole (421) along its length, the central shaft (550) being inserted into the first hole (421) and locked to the drive shaft (420).

6. The high precision rotational positioning stage lamp as claimed in claim 5, wherein an end of the central shaft (550) passing out of the driving shaft (420) is connected with a code wheel (610) of an encoder (620), and the encoder (620) for detecting an angle of the code wheel (610) is relatively fixed to the motor (400).

7. The high-precision rotary positioning stage lamp according to claim 5, characterized in that the end of the central shaft (550) that passes out of the driving shaft (420) is connected with a mounting seat (730) to which a magnetic sensor (710) is fixed, and a detector (720) for detecting the magnetic sensor (710) is fixed relative to the motor (400).

8. The high-precision rotary positioning stage lamp according to claim 1, further comprising a support bearing (800), wherein an outer ring of the support bearing (800) is relatively fixed to the second gear (530), two sides of an inner ring of the support bearing (800) are respectively connected with a fixing base (810) and the first gear (520), and one side of the fixing base (810) away from the first gear (520) is connected with the support arm (200), the lamp cap (100) or the chassis (300).

9. The high-precision rotary positioning stage lamp according to claim 1, further comprising a bracket (900), wherein the second gear (530) extends outside to form a fixing piece (531) and is fixed to the bracket (900).

10. The high-precision rotary positioning stage lamp according to claim 1, wherein a light source for emitting a light beam and an effect piece for intercepting the light beam to generate a light effect are arranged in the lamp cap (100), and the high-precision rotary positioning stage lamp further comprises a light-emitting lens arranged at a light-emitting opening of the lamp cap (100), and the light beam passing through the effect piece finally emits from the light-emitting lens.

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