CN112917408A - Projection arrangement that visual transmission design was used - Google Patents

Projection arrangement that visual transmission design was used Download PDF

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Publication number
CN112917408A
CN112917408A CN202110061601.3A CN202110061601A CN112917408A CN 112917408 A CN112917408 A CN 112917408A CN 202110061601 A CN202110061601 A CN 202110061601A CN 112917408 A CN112917408 A CN 112917408A
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China
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rotating mechanism
fixed
object positioning
disk
fine adjustment
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CN202110061601.3A
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CN112917408B (en
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朱丽娜
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Northeast Electric Power University
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Northeast Dianli University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Accessories Of Cameras (AREA)

Abstract

The invention discloses a projection device for visual transmission design, which is provided with a first object positioning and rotating mechanism, a second object positioning and rotating mechanism which can adjust the position on a machine base, wherein the second object positioning and rotating mechanism and the first object positioning and rotating mechanism are both arranged in a way of rotating around the central axis of the second object positioning and rotating mechanism, the central axis of the second object positioning and rotating mechanism is perpendicular to the central axis of the first object positioning and rotating mechanism, and an object to be visually transmitted and collected is fixed on the first object positioning and rotating mechanism and/or the second object positioning and rotating mechanism, so that not only can the fixation of objects with different structures be realized, but also the object can be adjusted in real time according to the position and angle required to be projected, and the object can be conveniently adjusted according to the study requirement, and visual communication of the object product is realized.

Description

Projection arrangement that visual transmission design was used
Technical Field
The invention particularly relates to a projection device for visual transmission design, and relates to the field of projection equipment for visual transmission design.
Background
At present, during product design and development, after a product model is processed and trial-produced, the characteristics, advantages and disadvantages of the product model are often required to be judged so as to be convenient for subsequent improvement of the product. When the characteristics and advantages and disadvantages of the product model are evaluated, the image of the product model is often collected, and in order to study the product model, the model image needs to be really displayed on a large screen of a study room, which requires a projection device to project, but the common projection device is difficult to visually convey the product model in real time, which causes difficulty in real-time adjustment according to the study progress and steps, and affects the study and improvement effects.
Disclosure of Invention
Accordingly, in order to solve the above-mentioned disadvantages, the present invention provides a projection apparatus for visual transmission design.
The invention is realized in this way, construct a projection arrangement for visual transmission design, it includes base, bed plate, camera regulation and fixed establishment, visual camera, first object location and rotary mechanism, second object location and rotary mechanism and projector, wherein, the bottom end of the said bed plate is fixed on the said base, the upper end of the said bed plate has said camera regulation and fixed establishment, the said camera regulates and is provided with the said visual camera removably on the fixed establishment, the bottom side of the said bed plate locates at the adjustable position above the said base and is provided with the said first object location and rotary mechanism, characterized by, there is said second object location and rotary mechanism on the said bed plate that can also regulate the position, said second object location and rotary mechanism and said first object location and rotary mechanism can be rotated around its central axis and set up rotatably, and the central axis of the second object positioning and rotating mechanism is perpendicular to the central axis of the first object positioning and rotating mechanism, an object to be visually conveyed and collected is fixed on the first object positioning and rotating mechanism and/or the second object positioning and rotating mechanism, and the projector is in communication connection with the visual camera so as to transmit data information collected by the visual camera to the projector for projection.
Further, as preferred, the first object positioning and rotating mechanism and the second object positioning and rotating mechanism have the same structure, the center of the base is provided with a vertical avoidance chute, the second object positioning and rotating mechanism can slide up and down along the vertical avoidance chute, and the second object positioning and rotating mechanism can be hidden in the vertical avoidance chute so as to provide space for the movement of the first object positioning and rotating mechanism.
Further, as preferred, camera regulation and fixed establishment are including adjusting slide, support, cylinder, regulation post, fixed dop, wherein, the fixed plate that is provided with in top of frame, be provided with drive adjustment mechanism in the fixed plate, drive adjustment mechanism's output is connected with adjust the slide, drive adjustment mechanism drives adjust the slide and reciprocate, it is provided with to adjust on the slide the support, be provided with vertical extension on the support the cylinder, the piston rod of cylinder is down, just the lower extreme of the piston rod of cylinder is connected with adjust the post, the lower extreme of adjusting the post is fixed to be provided with fixed dop, vision camera detachable sets up fixed dop is overhead.
Further, preferably, the driving adjustment mechanism is located on one side of the base, which is far away from the support, and the driving adjustment mechanism is a driving cylinder, a motor nut screw mechanism, a driving hydraulic rod or an electric push rod.
Further, as preferred, fixed dop be hydraulic pressure tight cutting ferrule structure or three-jaw clamping mechanism that expands, the vision camera be provided with the hydraulic pressure tight cutting ferrule structure complex tight fixed orifices that expands or be provided with three-jaw clamping mechanism cooperation fixed clamp post.
Further, as preferred, the frame is provided with a lower sliding plate capable of sliding up and down, a lifting driver is fixedly arranged at the bottom side of the lower sliding plate, the output end of the lifting driver is connected with a lifting support column, the first object positioning and rotating mechanism is fixed on the lifting support column, a lower sliding plate driving mechanism is arranged between the lower sliding plate and the frame, and the lower sliding plate driving mechanism is located on one side, far away from the first object positioning and rotating mechanism, in the frame.
Further, as preferred, still can be in the upper and lower regulation position be provided with telescopic cylinder on the frame, telescopic cylinder's output is connected with telescopic support column, second object location and rotary mechanism fixed connection are in on the telescopic support column.
Further, preferably, the first object positioning and rotating mechanism and the second object positioning and rotating mechanism both comprise a lower supporting disc, an angle fine adjustment upper disc, an angle fine adjustment mechanism, a detection disc, a rotating disc and a fixing assembly, the upper end of the lifting support column is fixedly provided with the lower support plate, the lower support plate is provided with the angle fine adjustment upper plate which can be slightly adjusted in angle by adopting the angle fine adjustment mechanism, the center of the angle fine adjustment upper disc is fixedly provided with a detection disc, the center of the detection disc is fixedly provided with the rotating disc, the rotating disc is provided with the fixing component for fixing the object to be visually conveyed and collected, a rotary driver for driving the rotary disk to rotate is fixedly arranged on the angle fine adjustment upper disk, the detection disc is provided with an infrared detector, and the infrared detector can detect whether an object to be visually conveyed and collected is fixed on the fixing assembly.
Further, as preferred, fixed subassembly inhales post, central negative pressure including the fixed negative pressure of side, and post and outer elastic protection cover are inhaled to the central negative pressure, wherein, the fixed center that is provided with in upper end of rotary disk inhales the post in the central negative pressure, lie in on the rotary disk the periphery that the post was inhaled to the central negative pressure is provided with annular outer elastic protection cover of circle, lie in on the rotary disk the periphery of outer elastic protection cover is provided with a plurality of circumference arrays the post is inhaled to the fixed negative pressure of side, the post is inhaled to the central negative pressure and is the setting of scalable regulation, just the height of outer elastic protection cover is less than the height that the post.
Further, as an optimization, a first calibration datum fixing clip, a second calibration datum fixing clip and a third calibration datum fixing clip are further arranged on the angle fine adjustment upper disc, calibration datums can be fixed on the first calibration datum fixing clip, the second calibration datum fixing clip and the third calibration datum fixing clip so as to improve reference by using the calibration datums, the angle fine adjustment mechanism comprises a plurality of arrays of fine adjustment telescopic driving rods, the upper ends of the fine adjustment telescopic driving rods are connected to the angle fine adjustment upper disc by hinged ball bearings, and the lower ends of the fine adjustment telescopic driving rods are fixed on the lower supporting disc.
The invention has the following advantages: compared with the same type of equipment, the projection device for visual transmission design provided by the invention has the following advantages:
(1) the invention relates to a projection device for visual transmission design, which is provided with a first object positioning and rotating mechanism, a second object positioning and rotating mechanism which can adjust the position on a machine base, a first object positioning and rotating mechanism and a second object positioning and rotating mechanism which can rotate around the central axis of the second object positioning and rotating mechanism, wherein the central axis of the second object positioning and rotating mechanism is vertical to the central axis of the first object positioning and rotating mechanism, and an object to be visually transmitted and collected is fixed on the first object positioning and rotating mechanism and/or the second object positioning and rotating mechanism, so that the fixation of objects with different structures can be realized, the object can be adjusted in real time according to the position and angle required to be projected, and the position of the object can be conveniently adjusted according to the research requirement, visual communication of the object product is realized;
(2) the positions of the first object positioning and rotating mechanism and the second object positioning and rotating mechanism are convenient to adjust, the first object positioning and rotating mechanism and the second object positioning and rotating mechanism can avoid each other, interference in the movement adjusting process is avoided, the object product on the first object positioning and rotating mechanism can be detected, the height of the outer elastic protection sleeve in the fixing assembly is lower than that of the central negative pressure suction column, the object can be protected through the outer elastic protection sleeve, fine adjustment of the angle of the object can be achieved through the angle fine adjustment upper disc, and the fixed calibration reference part is further arranged on the angle fine adjustment upper disc, so that calibration and reference comparison of the object are facilitated.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a first object positioning and rotating mechanism or a second object positioning and rotating mechanism according to the present invention;
fig. 3 is a schematic structural view of the angle fine adjustment mechanism of the present invention.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a projection device for visual transmission design through improvement, which comprises a base 4, a machine base 1, a camera adjusting and fixing mechanism, a visual camera, a first object positioning and rotating mechanism 6, a second object positioning and rotating mechanism 3 and a projector, wherein the lower end of the machine base is fixed on the base, the upper end of the machine base is provided with the camera adjusting and fixing mechanism, the visual camera is detachably arranged on the camera adjusting and fixing mechanism, the first object positioning and rotating mechanism 6 is arranged on the bottom side of the machine base above the base in an adjustable position, the invention is characterized in that the second object positioning and rotating mechanism 3 can be arranged on the machine base in an adjustable position, and the second object positioning and rotating mechanism 3 and the first object positioning and rotating mechanism 6 can rotate around the central axis thereof, and the central axis of the second object positioning and rotating mechanism 3 is perpendicular to the central axis of the first object positioning and rotating mechanism 6, an object to be visually conveyed and collected is fixed on the first object positioning and rotating mechanism 6 and/or the second object positioning and rotating mechanism 3, and the projector is in communication connection with the visual camera so as to transmit data information collected by the visual camera to the projector for projection.
The first object positioning and rotating mechanism 6 and the second object positioning and rotating mechanism 3 are identical in structure, a vertical avoiding chute 14 is formed in the center of the base, the second object positioning and rotating mechanism 3 can slide up and down along the vertical avoiding chute, and the second object positioning and rotating mechanism 3 can be hidden in the vertical avoiding chute so as to provide a space for movement of the first object positioning and rotating mechanism 6.
Camera regulation and fixed establishment is including adjusting slide 12, support 8, cylinder 10, regulation post 9, fixed dop 7, wherein, the fixed plate 11 that is provided with in top of frame, be provided with drive adjustment mechanism in the fixed plate, drive adjustment mechanism's output is connected with adjust the slide, drive adjustment mechanism drives it reciprocates to adjust the slide, it is provided with to adjust on the slide the support to fix, be provided with vertical extension on the support the cylinder, the piston rod of cylinder is down, just the lower extreme of the piston rod of cylinder is connected with adjust the post, the lower extreme of adjusting the post is fixed to be provided with fixed dop, vision camera detachable sets up fixed dop is overhead.
The driving adjusting mechanism is positioned on one side of the base, which is far away from the support, and the driving adjusting mechanism is a driving cylinder, a motor nut screw mechanism, a driving hydraulic rod or an electric push rod.
The fixed chuck 7 is a hydraulic expansion clamping sleeve structure or a three-jaw clamping mechanism, and the vision camera is provided with an expansion fixing hole matched with the hydraulic expansion clamping sleeve structure or a clamping column matched and fixed with the three-jaw clamping mechanism.
The base is provided with a lower sliding plate 5 which can slide up and down, a lifting driver is fixedly arranged at the bottom side of the lower sliding plate, the output end of the lifting driver is connected with a lifting support column 27, the first object positioning and rotating mechanism 6 is fixed on the lifting support column, a lower sliding plate driving mechanism is arranged between the lower sliding plate and the base, and the lower sliding plate driving mechanism is positioned at one side, far away from the first object positioning and rotating mechanism 6, in the base.
The machine base can also be provided with a telescopic cylinder 2 capable of adjusting the position up and down, the output end of the telescopic cylinder is connected with the telescopic support column 13, and the second object positioning and rotating mechanism 3 is fixedly connected onto the telescopic support column.
The first object positioning and rotating mechanism 6 and the second object positioning and rotating mechanism 3 both comprise a lower supporting disk 28, an angle fine adjustment upper disk 29, an angle fine adjustment mechanism, a detection disk 23, a rotating disk 22 and a fixing component, the upper end of the lifting support column 27 is fixedly provided with the lower support plate, the angle fine adjustment upper plate is arranged on the lower support plate by adopting the angle fine adjustment mechanism to adjust the angle slightly, the center of the angle fine adjustment upper disc is fixedly provided with a detection disc, the center of the detection disc is fixedly provided with the rotating disc, the rotating disc is provided with the fixing component for fixing the object to be visually conveyed and collected, a rotation driver for driving the rotation disc to rotate is fixedly arranged on the angle fine adjustment upper disc 29, the detection disc is provided with an infrared detector, and the infrared detector can detect whether an object to be visually conveyed and collected is fixed on the fixing assembly.
Fixed subassembly inhales post 20, central negative pressure including the fixed negative pressure of side and inhales post 19 and outer elastic protection cover 21, wherein, the fixed center that is provided with of upper end of rotary disk inhales the post of central negative pressure, lie in on the rotary disk the periphery that the post was inhaled to central negative pressure is provided with annular outer elastic protection cover 21, lie in on the rotary disk the periphery of outer elastic protection cover 21 is provided with a plurality of circumference arrays the post 20 is inhaled to the fixed negative pressure of side, the post is inhaled to the fixed negative pressure of side 20, the setting that the post 19 was scalable regulation is inhaled to central negative pressure, just outer elastic protection cover 21 highly be less than the height that post 19 was inhaled to central negative pressure.
The angle fine adjustment upper disc 29 is further provided with a first calibration reference fixing clip 18, a second calibration reference fixing clip 25 and a third calibration reference fixing clip 16, the first calibration reference fixing clip 18, the second calibration reference fixing clip 25 and the third calibration reference fixing clip 16 can fix calibration references so as to improve reference by using the calibration references, the angle fine adjustment mechanism comprises a plurality of arrays of fine adjustment telescopic driving rods 31, the upper ends of the fine adjustment telescopic driving rods are connected to the angle fine adjustment upper disc 29 through hinged ball bearings 30, the lower ends of the fine adjustment telescopic driving rods are fixed on the lower supporting disc 28, and the calibration references can be calibration references for displaying lengths and sizes or old products and existing products compared with the object products in the past.
The invention relates to a projection device for visual transmission design, which is provided with a first object positioning and rotating mechanism, a second object positioning and rotating mechanism which can adjust the position on a machine base, a first object positioning and rotating mechanism and a second object positioning and rotating mechanism which can rotate around the central axis of the second object positioning and rotating mechanism, wherein the central axis of the second object positioning and rotating mechanism is vertical to the central axis of the first object positioning and rotating mechanism, and an object to be visually transmitted and collected is fixed on the first object positioning and rotating mechanism and/or the second object positioning and rotating mechanism, so that the fixation of objects with different structures can be realized, the object can be adjusted in real time according to the position and angle required to be projected, and the position of the object can be conveniently adjusted according to the research requirement, visual communication of the object product is realized; the positions of the first object positioning and rotating mechanism and the second object positioning and rotating mechanism are convenient to adjust, the first object positioning and rotating mechanism and the second object positioning and rotating mechanism can be mutually avoided, interference in the movement adjusting process is avoided, the object product on the first object positioning and rotating mechanism can be detected, the height of an outer elastic protection sleeve in a fixing assembly is lower than that of the central negative pressure suction column, the object can be protected through the outer elastic protection sleeve, the angle fine adjustment upper disc can achieve fine adjustment of the angle of the object, a fixed calibration reference part is further arranged on the angle fine adjustment upper disc, calibration and reference comparison of the object are facilitated, and the calibration reference part can be a calibration part used for displaying the length and the size or an old product or an existing product compared with the object product before.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A projection device for visual transmission design comprises a base (4), a machine base (1), a camera adjusting and fixing mechanism, a visual camera, a first object positioning and rotating mechanism (6), a second object positioning and rotating mechanism (3) and a projector, wherein the lower end of the machine base is fixed on the base, the upper end of the machine base is provided with the camera adjusting and fixing mechanism, the visual camera is detachably arranged on the camera adjusting and fixing mechanism, the first object positioning and rotating mechanism (6) is arranged at the position, which can be adjusted, of the bottom side of the machine base above the base, and is characterized in that the second object positioning and rotating mechanism (3) can be arranged on the machine base in an adjustable manner, the second object positioning and rotating mechanism (3) and the first object positioning and rotating mechanism (6) can rotate around the central axis of the second object positioning and rotating mechanism, and the central axis of the second object positioning and rotating mechanism (3) is perpendicular to the central axis of the first object positioning and rotating mechanism (6), an object to be visually conveyed and collected is fixed on the first object positioning and rotating mechanism (6) and/or the second object positioning and rotating mechanism (3), and the projector is in communication connection with the visual camera so as to transmit data information collected by the visual camera to the projector for projection.
2. A projection device for visual communication of a design according to claim 1, wherein: the structure of first object location and rotary mechanism (6) and second object location and rotary mechanism (3) is the same, just the center of frame is provided with vertical dodge spout (14), second object location and rotary mechanism (3) can along vertical dodge spout slides from top to bottom, just second object location and rotary mechanism (3) can hide in vertical dodge in the spout, so that for the removal of first object location and rotary mechanism (6) provides the space.
3. A projection device for visual communication of a design according to claim 2, wherein: camera regulation and fixed establishment is including adjusting slide (12), support (8), cylinder (10), regulation post (9), fixed dop (7), wherein, the fixed plate (11) that is provided with in top of frame, be provided with drive adjustment mechanism in the fixed plate, drive adjustment mechanism's output is connected with adjust the slide, drive adjustment mechanism drives it reciprocates to adjust the slide, it is provided with to adjust on the slide the support, be provided with vertical extension on the support the cylinder, the piston rod of cylinder is down, just the lower extreme of the piston rod of cylinder is connected with adjust the post, the lower extreme of adjusting the post is fixed to be provided with fixed dop, vision camera detachable sets up fixed dop is overhead.
4. A projection device for visual communication of a design according to claim 3, wherein: the driving adjusting mechanism is positioned on one side of the base, which is far away from the support, and the driving adjusting mechanism is a driving cylinder, a motor nut screw mechanism, a driving hydraulic rod or an electric push rod.
5. A projection device for visual communication of a design according to claim 3, wherein: the fixed chuck (7) is a hydraulic expansion clamping sleeve structure or a three-jaw clamping mechanism, and the vision camera is provided with an expansion fixing hole matched with the hydraulic expansion clamping sleeve structure or a clamping column matched and fixed with the three-jaw clamping mechanism.
6. A projection device for visual communication of a design according to claim 5, wherein: the base is provided with a lower sliding plate (5) which can slide up and down, a lifting driver is fixedly arranged at the bottom side of the lower sliding plate, the output end of the lifting driver is connected with a lifting support column (27), a first object positioning and rotating mechanism (6) is fixed on the lifting support column, a lower sliding plate driving mechanism is arranged between the lower sliding plate and the base, and the lower sliding plate driving mechanism is located on one side, far away from the first object positioning and rotating mechanism (6), of the base.
7. A projection device for visual communication of a design according to claim 6, wherein: the machine base can be further provided with a telescopic cylinder (2) capable of adjusting the position up and down, the output end of the telescopic cylinder is connected with the telescopic support column (13), and the second object positioning and rotating mechanism (3) is fixedly connected onto the telescopic support column.
8. A projection device for visual communication of a design according to claim 6, wherein: the first object positioning and rotating mechanism (6) and the second object positioning and rotating mechanism (3) respectively comprise a lower supporting disk (28), an angle fine adjustment upper disk (29), an angle fine adjustment mechanism, a detection disk (23), a rotating disk (22) and a fixing component, the upper end of a lifting support column (27) is fixedly provided with the lower supporting disk, the lower supporting disk is provided with the angle fine adjustment mechanism capable of adjusting angles in a fine mode, the angle fine adjustment upper disk is fixedly provided with the detection disk at the center of the angle fine adjustment upper disk, the rotating disk is fixedly provided with the rotating disk at the center of the detection disk, the rotating disk is provided with the fixing component for fixing the object to be visually conveyed and collected, the angle fine adjustment upper disk (29) is fixedly provided with a rotating driver for rotationally driving the rotating disk, and the detection disk is provided with an infrared detector, the infrared detector can detect whether an object to be visually conveyed and collected is fixed on the fixing assembly.
9. A projection device for visual communication of a design according to claim 5, wherein: fixed subassembly inhales post (20), central negative pressure including the fixed negative pressure of side and inhales post (19) and outer elastic protection cover (21), wherein, the fixed center that is provided with of upper end of rotary disk inhales the post of central negative pressure, lie in on the rotary disk the periphery that the post was inhaled to central negative pressure is provided with annular outer elastic protection cover (21), lie in on the rotary disk the periphery of outer elastic protection cover (21) is provided with a plurality of circumference arrays post (20) is inhaled to the fixed negative pressure of side, post (19) are the setting of scalable regulation to the fixed negative pressure of side, the post is inhaled to central negative pressure (20), just the highly being less than of outer elastic protection cover (21) the height of post (19) is inhaled to central negative pressure.
10. A projection device for visual communication of a design according to claim 9, wherein: the angle fine adjustment upper disc (29) is further provided with a first calibration reference fixing clip (18), a second calibration reference fixing clip (25) and a third calibration reference fixing clip (16), the first calibration reference fixing clip (18), the second calibration reference fixing clip (25) and the third calibration reference fixing clip (16) can be used for fixing calibration references, so that the calibration references can be improved, the angle fine adjustment mechanism comprises fine adjustment telescopic driving rods (31) in a plurality of arrays, the upper ends of the fine adjustment telescopic driving rods are connected to the angle fine adjustment upper disc (29) through hinged ball bearings (30), and the lower ends of the fine adjustment telescopic driving rods are fixed to the lower supporting disc (28).
CN202110061601.3A 2021-01-18 2021-01-18 Projection arrangement that visual transmission design was used Active CN112917408B (en)

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CN112917408B (en) 2022-09-09

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