CN111102460A

CN111102460A - Projector adjusting device and working method thereof

Info

Publication number: CN111102460A
Application number: CN202010126204.5A
Authority: CN
Inventors: 吴槐
Original assignee: Fuzhou Zhanxu Electronic Co ltd
Current assignee: Fuzhou Zhanxu Electronic Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-05-05

Abstract

The invention relates to a projector adjusting device and a working method thereof, wherein the projector adjusting device comprises a vertically arranged central shaft, a first supporting plate fixedly connected to the central shaft, a second supporting plate arranged below the first supporting plate and a third supporting plate arranged below the second supporting plate, wherein the peripheries of the first supporting plate, the second supporting plate and the third supporting plate are covered with an outer cover shell, the center of the upper part of the outer cover shell is provided with a through hole for the central shaft to penetrate through, the lower part of the outer cover shell is rotatably hinged with the second supporting plate in the direction of a transverse shaft which is vertical to the plane of the central shaft axis, the second supporting plate is rotatably hinged with the third supporting plate in the direction of a longitudinal shaft which is vertical to the plane of the central shaft axis, and the direction of the transverse shaft is vertical to the direction of the longitudinal shaft; meanwhile, the structure is stable in support and large in support force.

Description

Projector adjusting device and working method thereof

The technical field is as follows:

the present invention relates to a projector adjustment device for adjusting a projection orientation of a projector.

Background art:

a projector is a device that can project images or videos of digital devices such as computers, tablets or designs onto a curtain.

The projector can be usually installed on a ceiling or a side wall, but when the projector is installed or used, an image projected by the projector has a certain deformation and cannot be completely and rightly reflected on a projection screen.

At present, some adjusting devices of some projectors generate mutual interference when adjusting three coordinate axes (X, Y, Z axes), so that repeated adjustment is needed for many times, the adjusting efficiency is low, and the bearing effect of some structures is poor.

The invention content is as follows:

the invention aims to provide a projector adjusting device which is convenient to adjust and good in bearing effect.

The invention relates to a projector adjusting device, which is characterized in that: center pin, the first backup pad of fixed connection on the center pin including vertical setting, establish the second backup pad in first backup pad below and establish the third backup pad in second backup pad below, the peripheral cover of first backup pad, second backup pad and third backup pad is equipped with the housing, the upper portion center of housing is equipped with the perforation that is used for the center pin to wear out, the lower part of housing rotates with the second backup pad on the planar cross axle direction in perpendicular to center pin axial lead place and articulates, and second backup pad rotates with the third backup pad on the planar axis of ordinates direction in perpendicular to center pin axial lead place and articulates, cross axle direction and axis of ordinates direction mutually perpendicular, be equipped with between first backup pad and the housing and be used for adjusting the relative center pin of housing and follow the first screw-nut pair that center pin axial lead swung, be equipped with between second backup pad and the first backup pad and be used for adjusting the relative housing of second backup pad and swing along the cross axle direction And a third screw-nut pair for adjusting the third support plate to swing and rotate along the longitudinal axis direction relative to the second support plate is arranged between the third support plate and the second support plate.

Furthermore, a plurality of limiting channels are uniformly distributed on the first supporting plate, and a plurality of limiting nails matched with the limiting channels are arranged on the inner bottom surface of the outer housing; the utility model discloses a lead screw, including first supporting plate, first nut, first lead screw, first breach, first nut, first lead screw, the terminal articulated first lateral wall board of first lead screw is equipped with first fixing base on, and another lateral wall board of first lateral wall board has the through-hole that supports first lead screw, and the outer housing is worn out to the head end of first lead screw, it is vice that first lead screw and first nut constitute first screw-nut to be equipped with two relative breachs that set up on the first supporting plate, be first breach and second breach respectively, first breach is equipped with the first lateral wall board that is concave shape, the outer housing is fixed for on the inside wall of first breach position, spacing first nut that is equipped with in the first fixing base, threaded connection has first.

Furthermore, the inner bottom surface of the outer casing is provided with a second side wall plate in a concave shape at a position opposite to the second notch, a second fixing seat is arranged at a position opposite to the second side wall plate on the second supporting plate, a second nut is arranged in the second fixing seat in a limiting manner, a second lead screw is connected to the second nut in a threaded manner, the tail end of the second lead screw is hinged to one side part of the second side wall plate, a through hole for supporting the second lead screw is formed in the other side part of the second side wall plate, the head end of the second lead screw penetrates out of the outer casing, and the second lead screw and the second nut form a second lead screw nut pair.

Furthermore, a third fixing seat and a third nut which is arranged in the third fixing seat in a limiting mode are further arranged on the second supporting plate, a third screw rod is connected to the third nut in a threaded mode, two third side wall plates which penetrate through the through groove in the second supporting plate are arranged on the third supporting plate and located on two side portions of the third fixing seat, the tail end of the third screw rod is hinged to one of the third side wall plates, a through hole is formed in the other third side wall plate and used for supporting the third screw rod, the head end of the third screw rod penetrates out of the outer housing, and the third screw rod and the third nut form a third screw rod nut pair.

Further, the center shaft is in a tubular shape, a lower end portion of the center shaft is fixedly connected to the first support plate, and a thread for connection is provided on an outer circumferential wall or an inner circumferential wall of the center shaft.

Further, the first fixing seat comprises a first base fixing plate and a first rectangular seat body arranged on the first base fixing plate, the first rectangular seat body is in a pipe column shape with a rectangular section, a first through groove is formed in one side, close to the central shaft, of the first rectangular seat body, and the first nut is arranged in the first through groove in a plugging mode; the second fixing seat and the third fixing seat respectively comprise a base fixing piece and a rectangular seat body arranged on the base fixing piece, the upper portion of the rectangular seat body is in a pipe column shape with a rectangular cross section, a through groove is formed in the upper portion of the rectangular seat body, and the second nut or the third nut is arranged in the through groove in a plugging mode.

Furthermore, the tail ends of the first, second and third screw rods are provided with milled upper and lower platform surfaces, the milled positions of the screw rods penetrate through the first, second or third side wall plates, spring gaskets and gaskets are arranged on two sides of the side wall plates, and locking nuts are arranged at the tail ends of the first, second and third screw rods.

Further, the first nut, the second nut and the third nut each include a rectangular body having a threaded hole at the center thereof and a cylindrical table provided on the upper and lower sides of the rectangular body, and the axis of the threaded hole is perpendicular to the axis of the cylindrical table.

Furthermore, the lower part of the outer housing is rotatably hinged with a second support plate through a first rivet, and the second support plate is rotatably hinged with a third support plate through a second rivet; the second supporting plate and the third supporting plate are in a cover shape, the second supporting plate covers the third supporting plate, and a avoiding groove used for avoiding the outer shell and the second supporting plate to be rotationally hinged is formed in the third supporting plate.

The invention relates to a working method of a projector adjusting device, which is characterized in that: projecting apparatus adjusting device includes the center pin of vertical setting, fixed connection at the epaxial first backup pad of center, establish the second backup pad in first backup pad below and establish the third backup pad in second backup pad below, the peripheral cover of first backup pad, second backup pad and third backup pad is equipped with the housing, the upper portion center of housing is equipped with the perforation that is used for the center pin to wear out, the lower part of housing rotates articulated in the planar cross axle direction in perpendicular to center pin axial lead place with the second backup pad, and second backup pad rotates articulated in the planar axis of ordinates direction in perpendicular to center pin axial lead place with the third backup pad, cross axle direction and axis of ordinates direction mutually perpendicular, be equipped with between first backup pad and the housing and be used for adjusting the relative center pin of housing and follow the first screw-nut pair that center pin axial lead swung, be equipped with between second backup pad and the first backup pad and be used for adjusting the relative housing of second backup pad and follow cross axle side square A third screw-nut pair used for adjusting the third supporting plate to swing and rotate along the direction of the longitudinal axis relative to the second supporting plate is arranged between the third supporting plate and the second supporting plate; when the device works, a first screw rod of the first screw rod nut pair is driven to act, so that the outer housing swings and rotates along the axis of the central shaft relative to the first supporting plate; driving a second screw rod of the second screw rod nut pair to act so as to enable the first supporting plate to swing and rotate along the direction of the transverse shaft relative to the second supporting plate; driving a third screw rod of the third screw rod nut pair to act, so that the second support plate swings and rotates along the longitudinal axis direction relative to the third support plate; the projector fixedly arranged below the third supporting plate can be adjusted in a swinging mode in the directions of a vertical shaft, a horizontal shaft and a longitudinal shaft relative to a central shaft fixedly hung on a ceiling.

In the projector adjusting device, the central shaft is connected to a suspension rod hung on a ceiling, the lower part of a third support plate is connected with a projector through a connecting plate, the first support plate is fixedly connected with the central shaft, the first support plate, the second support plate and the third support plate are covered by an outer cover shell, the upper part of the outer cover shell penetrates out of the central shaft, the lower part of the outer cover shell is rotatably hinged with the second support plate, and the second support plate is rotatably hinged with the third support plate, so that the first screw rod of a first screw rod nut pair can be driven to act, and the outer cover shell can swing and rotate along the axial lead of the central shaft relative; driving a second screw rod of the second screw rod nut pair to act so as to enable the first supporting plate to swing and rotate along the direction of the transverse shaft relative to the second supporting plate; driving a third screw rod of the third screw rod nut pair to act, so that the second support plate swings and rotates along the longitudinal axis direction relative to the third support plate; the structure enables the projector connected below the third supporting plate to conveniently adjust the vertical axis, the horizontal axis and the longitudinal axis (namely three coordinate axes), namely the adjustment of the three coordinate axes is an independent adjusting screw rod, so that an adjusting system is independent and does not interfere with each other, and the adjusting efficiency is high; meanwhile, the structure is stable in support and large in support force.

The present invention will be described in detail with reference to the accompanying drawings.

Description of the drawings:

FIG. 1 is a perspective configuration view of a projector adjustment apparatus of the present invention;

FIG. 2 is a perspective view of the hidden outer casing, first support plate and central shaft of FIG. 1;

FIG. 3 is a perspective view of the hidden outer casing from another perspective of FIG. 1;

FIG. 4 is an exploded view of the projector adjustment mechanism of the present invention;

FIGS. 5 and 6 are partial configuration views of FIG. 3;

FIG. 7 is a perspective view of FIG. 1 from another perspective;

FIG. 8 is an exploded view from another perspective of the present invention;

FIG. 9 is a partial view of FIG. 8;

FIG. 10 is a partial view of FIG. 8;

FIG. 11 is a top configuration view of the hidden outer housing shell, first support plate and central shaft of the present invention;

FIG. 12 is an exploded view of the anchor block and nut;

FIG. 13 is a constructional view of the fixed connection of the end of the screw rod;

FIG. 14 is a perspective view of a connection plate;

fig. 15 is a schematic view of the connection of the present invention to a connection plate.

The specific implementation mode is as follows:

the projector adjusting device comprises a vertically arranged central shaft 1 (the axial lead of the central shaft is a Z axis), a first supporting plate 2 fixedly connected to the central shaft 1, a second supporting plate 3 arranged below the first supporting plate 2 and a third supporting plate 4 arranged below the second supporting plate 3, wherein the central shaft 1 can be provided with threads on the outer peripheral wall or the inner peripheral wall and is in threaded connection with a suspender hung on a ceiling, and other fixed connection modes can be adopted, and the first supporting plate 2 and the central shaft 1 can be fixed by welding, anchoring or bolt connection; the periphery of first backup pad 2, second backup pad 3 and third backup pad 4 is covered and is equipped with outer housing 5, the upper portion center of outer housing 5 is equipped with and is used for the perforation 501 that center pin 1 wore out, and outer housing 5 is the rectangle form cover body, and first backup pad 2 is the rectangle flat body, and second backup pad 3 and third backup pad 4 are the rectangle cover form, and of course other such as the flat plate shape also can, this application only exemplifies with the rectangle cover form.

The lower part of the outer housing 5 is rotatably hinged with the second support plate 3 in the direction of a transverse axis (namely, an X axis) perpendicular to a plane K where a central axis is located, the second support plate 3 is rotatably hinged with the third support plate 4 in the direction of a longitudinal axis (namely, a Y axis) perpendicular to the plane K where the central axis is located, the direction of the transverse axis is perpendicular to the direction of the longitudinal axis, the lower part of the outer housing is rotatably hinged with the second support plate through a first rivet 25, the second support plate is rotatably hinged with the third support plate through a second rivet 26, and the structure can realize the swinging rotation of a projector connected below the third support plate in two axial directions; the rivet is shown to be rotatably hinged on the side wall of the cover body, when the second support plate and the third support plate which are flat-plate-shaped are adopted, the rotatably hinged part of the rivet can be positioned on the hinge seat protruding on the surface of the plate body, and the third support plate is provided with an avoiding groove 27 for avoiding the rotation hinge of the outer shell and the second support plate.

A first screw-nut pair 6 for adjusting the swing of the outer housing along the axis of the central shaft relative to the central shaft is arranged between the first support plate 2 and the outer housing 5, a second screw-nut pair 7 for adjusting the swing of the second support plate relative to the outer housing along the direction of the transverse shaft is arranged between the second support plate 3 and the first support plate 2, and a third screw-nut pair 8 for adjusting the swing of the third support plate relative to the second support plate along the direction of the longitudinal shaft is arranged between the third support plate 4 and the second support plate 3; the screw-nut pair comprises a screw rod and a nut in threaded connection with the screw rod, when the screw rod rotates, the nut is driven to move axially relatively in the process of meeting, and when the screw rod is limited axially, the nut can be moved axially relatively.

A plurality of limiting channels 9 are uniformly distributed on the first supporting plate 2, the limiting channels 9 can be four, the shape of the limiting channels can be a runway shape, a plurality of limiting nails 10 matched with the limiting channels are arranged on the inner bottom surface of the outer casing, and the stroke of the outer casing swinging relative to the first supporting plate 2 is limited through the limiting nails.

The first support plate 2 is provided with two oppositely arranged notches 11 which are respectively a first notch 11a and a second notch 11b, the first notch 11a is provided with a first side wall plate 12 in a concave shape, the first side wall plate 12 and the second side wall plate 14 have the same shape and are both in a concave shape, the first side wall plate 12 can be welded or anchored on the first notch 11a of the first support plate, the opening faces the inner wall surface of the outer cover shell, the inner side wall of the outer cover shell corresponding to the first notch position is fixedly provided with a first fixing seat 13, a first nut 601 is limited in the first fixing seat 13, a first lead screw 602 is connected in the first nut by screw thread, the tail end of the first lead screw 602 is hinged on one side part 12 of the first side wall plate, the other side part of the first side wall plate is provided with a through hole for supporting the first lead screw, the head end of the first lead screw penetrates out of the outer cover shell 5, the first lead screw 602 and the first nut 601 form a first lead, the end of the first lead screw 602 penetrating through the outer housing 5 is fixed with a knob, and when the first lead screw is rotated by the knob, the first lead screw connected to the first support plate is axially fixed relatively, so that the first nut moves axially relatively, that is, the outer housing connected to the first fixing seat is driven to rotate around the central axis (Z axis), that is, the Z axis rotation of the projector installed below the third support plate is realized.

The first nut is a rectangular body 23 with a threaded through hole 22 and a cylindrical table 24 arranged on the upper side and the lower side of the rectangular body, and the axis of the threaded through hole is vertical to the axis of the cylindrical table; the first fixing seat 13 includes a first base fixing plate 1301 and a first rectangular seat 1302 arranged on the first base fixing plate, the first base fixing plate 1301 is welded or anchored on the inner wall surface of the outer housing, the first rectangular seat is in a tube shape with a rectangular cross section, one side of the first rectangular seat close to the central axis is provided with a first through groove 1303 (which needs to be opened to facilitate subsequent assembly, the first through groove is arranged along the axial direction of the screw rod), the first through groove is internally provided with the first nut 6, wherein the length of the rectangular body 23 in the axial direction of the screw rod is about the length of the first through groove 1303 in the axial direction of the screw rod, the width of the inner surface of the rectangular opening of the first rectangular seat in the axial direction of the screw rod is slightly larger than the diameter of the cylindrical table, the two cylindrical tables are limited in the rectangular opening of the first rectangular seat and can rotate, the axial movement of the first nut 6 can drive the first rectangular seat 1302, the, The first fixed seat 13 and the outer housing move, and the nuts and the lead screws of the second lead screw nut pair and the third lead screw nut pair are also configured as described above.

A concave second side wall plate 14 is arranged at the position, opposite to the second notch 11b, of the inner bottom surface of the outer housing, the outer bottom surface of the second side wall plate 14 is welded or anchored at the inner bottom surface of the outer housing, the opening of the second side wall plate faces a second support plate, a second fixed seat 15 is arranged at the position, opposite to the second side wall plate, of the second support plate 14, a second nut 701 is arranged in the second fixed seat 15 in a limiting manner, a second screw rod 702 is connected to the second nut through threads, the tail end of the second screw rod 702 is hinged to one side portion of the second side wall plate, a through hole for supporting the second screw rod is arranged at the other side portion of the second side wall plate, the head end of the second screw rod penetrates out of the outer housing 5, the second screw rod 702 and the second nut 701 form the second screw rod nut pair 7, the end of the second screw rod, which penetrates out of the outer housing 5, is fixedly connected, since the second lead screw connected to the outer housing is axially fixed, the second nut moves axially relatively, i.e. the second support plate connected to the second fixing seat is driven to rotate around the axis of the cross shaft (X axis, i.e. the axis of the first rivet 25), i.e. the X axis rotation of the projector installed below the third support plate is realized.

The second supporting plate 3 is further fixedly provided with a third fixing seat 16 and a third nut 801 limited in the third fixing seat (the third fixing seat 16 is staggered by 90 degrees on the second supporting plate relative to the second fixing seat 15), a third screw 802 is connected to the third nut through a thread, two third side wall plates 17 penetrating through the through groove 28 on the second supporting plate 3 are fixedly arranged on the third supporting plate 4, the two third side wall plates 17 are positioned at two side parts of the third fixing seat, the tail end of the third screw 802 is hinged on one of the third side wall plates 17, the other third side wall plate is provided with a through hole for supporting a third screw 802 (the screw position supported by the through hole is cylindrical, the side wall plate is used for realizing better support and avoiding unilateral stress), the head end of the third screw passes through the housing 5, and the third screw 802 and the third nut 801 form a third screw nut pair 8, the end of the third lead screw penetrating out of the outer housing 5 is fixedly connected with a knob, when the third lead screw is rotated through the knob, because the third fixed seat and the third nut which are connected on the second supporting plate are relatively axially fixed, the third lead screw moves relatively axially, namely, the third supporting plate connected with the third side wall plate 17 is driven to rotate around the axis of the longitudinal axis (Y axis, namely, the axis of the second rivet 26), namely, the Y axis rotation of the projector arranged below the third supporting plate is realized, and the structure of the nut of the third lead screw nut pair, the structure of the lead screw and the third fixed seat are the same as that of the first lead screw nut pair, so that the description is not repeated.

The center shaft 1 is in the form of a tubular column, and has a lower end portion fixedly connected to the first support plate 2, and a screw thread for connection is provided on an outer peripheral wall or an inner peripheral wall of the center shaft.

The second fixing seat 15 and the third fixing seat 16 have the same structure as the first fixing seat, and both include a base fixing plate and a rectangular seat body disposed on the base fixing plate, the upper portion of the rectangular seat body is in a tubular shape with a rectangular cross section, the tubular shape can be surrounded by a steel plate, a rectangular opening is formed at the middle portion of the tubular shape for placing a nut, a through groove is disposed at the upper portion of the rectangular seat body, the through groove is axially disposed along the screw rod, and is in an open shape near the end portion for convenient assembly, and the second nut or the third nut is disposed in the through groove in a plugged manner.

The tail ends of the first, second and third screw rods are provided with milled upper and lower platform surfaces 18, the milled positions of the screw rods penetrate through the first, second or third side wall plates, two sides of the side wall plates are provided with spring gaskets 19 and gaskets 20, the tail ends of the first, second and third screw rods are provided with locking nuts 21, after the locking nuts 21, the spring gaskets 19 and the gaskets 20 are assembled with the screw rods, the rotatable connection between the tail ends of the screw rods and the side wall plates is ensured, and the inner hole shapes of the gaskets 20 are the same as the cross sections of the end parts of the milled screw rods.

When the projector adjusting device is assembled, a first side wall plate 12, a central shaft 1 and a first supporting plate 2 are fixed in advance to form a whole, a first fixed seat and a second side wall plate are respectively fixed on an outer casing to form a whole, a second fixed seat and a third fixed seat are respectively fixed on a second supporting plate 3 to form a whole, two third side wall plates 17 are respectively fixed on a third supporting plate to form a whole, a first screw rod and a first nut are installed on the first side wall plate 12 after being screwed, a second screw rod and a second nut are installed on the second side wall plate 14 after being screwed, a third screw rod and a third nut are installed on the third side wall plate 17 after being screwed, then the central shaft 1 penetrates through a through hole 501 of the outer casing, a limit nail 10 is limited in a limit channel 9, then the second supporting plate is inserted into the outer casing from bottom to top, and after adjustment, the through grooves on the first fixed seat and the second fixed seat are sleeved, The second nut realizes the limit of the first nut and the second nut, then the lower part of the outer housing and the second support plate are riveted and fixed through the rivet 25, then the third side wall plate on the third support plate penetrates through the through groove and is inserted into the second support plate, the through groove of the third fixing seat is sleeved in the third nut, the limit of the third nut is realized, and finally the rivet 26 is riveted and fixed with the second support plate and the third support plate.

The upper surface of the connecting plate 28 of the present application is connected to the bottom surface of the third supporting plate 4 by screws, the projection device is connected to the lower surface of the connecting plate 28 by bolts and the like, the connecting plate 28 has a plate body and four telescopic connecting rods connected to the lower surface of the plate body in an array, and the four telescopic connecting rods are telescopic to meet the requirements of different projector sizes, and in fact, the connecting plate 28 is an existing component, which is not the innovation of the present application.

In the present application, the third support plate and the first and third nut screw pairs may be omitted, and the connecting plate 28 is directly connected below the second support plate, i.e. the invention object of the present application is achieved, and only the adjustment of the pitch angle and the elevation angle of the projection apparatus is achieved.

The invention relates to a working method of a projector adjusting device, which comprises a vertically arranged central shaft, a first supporting plate fixedly connected to the central shaft, a second supporting plate arranged below the first supporting plate and a third supporting plate arranged below the second supporting plate, wherein the peripheries of the first supporting plate, the second supporting plate and the third supporting plate are covered with an outer cover shell, the center of the upper part of the outer cover shell is provided with a through hole for the central shaft to penetrate through, the lower part of the outer cover shell is rotatably hinged with the second supporting plate in the direction of a transverse shaft perpendicular to the plane of the central shaft axis, the second supporting plate and the third supporting plate are rotatably hinged in the direction of a longitudinal shaft perpendicular to the plane of the central shaft axis, the direction of the transverse shaft is perpendicular to the direction of the longitudinal shaft, a first screw rod nut pair for adjusting the outer cover shell to rotate along the central shaft axis relative to the central shaft is arranged between the first supporting plate and, a second screw-nut pair for adjusting the second support plate to swing along the direction of a transverse shaft relative to the outer housing is arranged between the second support plate and the first support plate, and a third screw-nut pair for adjusting the third support plate to swing along the direction of a longitudinal shaft relative to the second support plate is arranged between the third support plate and the second support plate; when the device works, a first screw rod of the first screw rod nut pair is driven to act, so that the outer housing swings and rotates along the axis of the central shaft relative to the first supporting plate; driving a second screw rod of the second screw rod nut pair to act so as to enable the first supporting plate to swing and rotate along the direction of the transverse shaft relative to the second supporting plate; driving a third screw rod of the third screw rod nut pair to act, so that the second support plate swings and rotates along the longitudinal axis direction relative to the third support plate; the projector fixedly arranged below the third supporting plate can be adjusted in a swinging mode in the directions of a vertical shaft, a horizontal shaft and a longitudinal shaft relative to a central shaft fixedly hung on a ceiling.

The above description is only an embodiment of the present invention, and all equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims

1. A projector adjusting device is characterized in that: the device comprises a vertically arranged central shaft, a first supporting plate fixedly connected to the central shaft, a second supporting plate arranged below the first supporting plate and a third supporting plate arranged below the second supporting plate, wherein outer housings are covered on the peripheries of the first supporting plate, the second supporting plate and the third supporting plate, a through hole for the central shaft to penetrate through is formed in the center of the upper part of each outer housing, and a first screw-nut pair for adjusting the outer housings to swing along the axial lead of the central shaft relative to the central shaft is arranged between the first supporting plate and the outer housings; the lower part of the outer housing is rotatably hinged with the second support plate in the direction of a transverse shaft perpendicular to the plane of the central shaft axis, and a second screw rod nut pair for adjusting the second support plate to swing along the transverse shaft direction relative to the outer housing is arranged between the second support plate and the first support plate; the second supporting plate and the third supporting plate are rotatably hinged in the longitudinal axis direction of the plane where the axis of the central shaft is perpendicular to, the transverse axis direction is perpendicular to the longitudinal axis direction, and a third screw nut pair used for adjusting the third supporting plate to swing and rotate along the longitudinal axis direction relative to the second supporting plate is arranged between the third supporting plate and the second supporting plate.

2. The projector adjustment apparatus according to claim 1, wherein: a plurality of limiting channels are uniformly distributed on the first supporting plate, and a plurality of limiting nails matched with the limiting channels are arranged on the inner bottom surface of the outer housing; the utility model discloses a lead screw, including first supporting plate, first nut, first lead screw, first breach, first nut, first lead screw, the terminal articulated first lateral wall board of first lead screw is equipped with first fixing base on, and another lateral wall board of first lateral wall board has the through-hole that supports first lead screw, and the outer housing is worn out to the head end of first lead screw, it is vice that first lead screw and first nut constitute first screw-nut to be equipped with two relative breachs that set up on the first supporting plate, be first breach and second breach respectively, first breach is equipped with the first lateral wall board that is concave shape, the outer housing is fixed for on the inside wall of first breach position, spacing first nut that is equipped with in the first fixing base, threaded connection has first.

3. The projector adjustment apparatus according to claim 2, wherein: the inner bottom surface of the outer housing is provided with a second side wall plate in a concave shape at a position opposite to the second notch, a second fixing seat is arranged at a position opposite to the second side wall plate on the second supporting plate, a second nut is arranged in the second fixing seat in a limiting manner, a second lead screw is connected to the second nut in a threaded manner, the tail end of the second lead screw is hinged to one side part of the second side wall plate, a through hole for supporting the second lead screw is formed in the other side part of the second side wall plate, the head end of the second lead screw penetrates out of the outer housing, and the second lead screw and the second nut form a second lead screw nut pair.

4. The projector adjustment apparatus according to claim 3, wherein: the second support plate is further provided with a third fixing seat and a third nut which is arranged in the third fixing seat in a limiting mode, a third screw rod is connected to the third nut in a threaded mode, the third support plate is provided with two third side wall plates penetrating through the through grooves in the second support plate, the two third side wall plates are located on two sides of the third fixing seat, the tail end of the third screw rod is hinged to one of the third side wall plates, a through hole is formed in the other third side wall plate and used for supporting the third screw rod, the head end of the third screw rod penetrates out of the outer housing, and the third screw rod and the third nut form a third screw rod nut pair.

5. The projector adjustment apparatus according to claim 1, wherein: the center pin is the tubular column form, and its lower tip and first backup pad fixed connection are equipped with the screw thread that is used for connecting at the periphery wall or the internal perisporium of center pin.

6. The projector adjustment apparatus according to claim 4, wherein: the first fixing seat comprises a first base fixing piece and a first rectangular seat body arranged on the first base fixing piece, the first rectangular seat body is in a pipe column shape with a rectangular section, a first through groove is formed in one side, close to the central shaft, of the first rectangular seat body, and the first nut is arranged in the first through groove in a plugging mode; the second fixing seat and the third fixing seat respectively comprise a base fixing piece and a rectangular seat body arranged on the base fixing piece, the upper portion of the rectangular seat body is in a pipe column shape with a rectangular cross section, a through groove is formed in the upper portion of the rectangular seat body, and the second nut or the third nut is arranged in the through groove in a plugging mode.

7. The projector adjustment apparatus according to claim 4, wherein: the tail ends of the first, second and third screw rods are provided with milled upper and lower platform surfaces, the milled positions of the screw rods penetrate through the first, second or third side wall plates, spring gaskets and gaskets are arranged on two sides of the side wall plates, and locking nuts are arranged at the tail ends of the first, second and third screw rods.

8. The projector adjustment apparatus according to claim 4, wherein: the first nut, the second nut and the third nut respectively comprise a rectangular body with a threaded through hole in the center and a cylindrical table arranged on the upper side and the lower side of the rectangular body, and the axis of the threaded through hole is perpendicular to the axis of the cylindrical table.

9. The projector adjustment apparatus according to claim 1, wherein: the lower part of the outer housing is rotatably hinged with the second support plate through a first rivet, and the second support plate is rotatably hinged with the third support plate through a second rivet; the second supporting plate and the third supporting plate are in a cover shape, the second supporting plate covers the third supporting plate, and a avoiding groove used for avoiding the outer shell and the second supporting plate to be rotationally hinged is formed in the third supporting plate.

10. A working method of a projector adjusting device is characterized in that: projecting apparatus adjusting device includes the center pin of vertical setting, fixed connection at the epaxial first backup pad of center, establish the second backup pad in first backup pad below and establish the third backup pad in second backup pad below, the peripheral cover of first backup pad, second backup pad and third backup pad is equipped with the housing, the upper portion center of housing is equipped with the perforation that is used for the center pin to wear out, the lower part of housing rotates articulated in the planar cross axle direction in perpendicular to center pin axial lead place with the second backup pad, and second backup pad rotates articulated in the planar axis of ordinates direction in perpendicular to center pin axial lead place with the third backup pad, cross axle direction and axis of ordinates direction mutually perpendicular, be equipped with between first backup pad and the housing and be used for adjusting the relative center pin of housing and follow the first screw-nut pair that center pin axial lead swung, be equipped with between second backup pad and the first backup pad and be used for adjusting the relative housing of second backup pad and follow cross axle side square A third screw-nut pair used for adjusting the third supporting plate to swing and rotate along the direction of the longitudinal axis relative to the second supporting plate is arranged between the third supporting plate and the second supporting plate; when the device works, a first screw rod of the first screw rod nut pair is driven to act, so that the outer housing swings and rotates along the axis of the central shaft relative to the first supporting plate; driving a second screw rod of the second screw rod nut pair to act so as to enable the first supporting plate to swing and rotate along the direction of the transverse shaft relative to the second supporting plate; driving a third screw rod of the third screw rod nut pair to act, so that the second support plate swings and rotates along the longitudinal axis direction relative to the third support plate; the projector fixedly arranged below the third supporting plate can be adjusted in a swinging mode in the directions of a vertical shaft, a horizontal shaft and a longitudinal shaft relative to a central shaft fixedly hung on a ceiling.