CN111156394A

CN111156394A - Double-sided projection system for silk exhibition

Info

Publication number: CN111156394A
Application number: CN201911423333.4A
Authority: CN
Inventors: 顾云杰; 陈彦旭; 徐继斌
Original assignee: Shanghai Gensheng Decoration Design Co Ltd
Current assignee: Shanghai Gensheng Decoration Design Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-15
Anticipated expiration: 2039-12-31
Also published as: CN111156394B

Abstract

The invention relates to a double-sided projection system for silk exhibition, which is applied to the technical field of exhibition projection and comprises a projector and a screen, and further comprises a projection frame, wherein the projection frame comprises a bearing plate, two lifting cylinders arranged on the bearing plate and first support rods connected in the two lifting cylinders in a sliding manner, the two first support rods are respectively hinged with a second support rod, the two second support rods are connected through a substrate, a roller for winding the screen is rotatably connected to the substrate, a servo motor is arranged on the substrate, a motor shaft of the servo motor is coaxially connected with the roller, and the projector is connected to the substrate. The invention has the effect of facilitating the installation of the projection system.

Description

Double-sided projection system for silk exhibition

Technical Field

The invention relates to the technical field of exhibition projection, in particular to a double-sided projection system for silk exhibition.

Background

The projector, also known as a projector, is a device capable of projecting images or videos onto a curtain, and can be connected with a computer, a VCD, a DVD and the like through different interfaces to play corresponding video signals, while the projection screen is used in occasions such as movies, offices, home theaters, large conferences and the like, and is matched with the projector to form holographic projection to display images and video files, and in modern commodity exhibition, holographic projection is often used in an exhibition hall to play introduction videos of products, so that a better propaganda effect is achieved.

However, in actual installation, the projector and the screen are usually fixed to the ceiling of the exhibition hall by screws, and an operator needs to punch holes in the ceiling before installation, and needs to punch holes again when adjusting the position, which brings inconvenience to installation.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a double-sided projection system for silk exhibition, which has the effect of facilitating the installation of the projection system.

The above object of the present invention is achieved by the following technical solutions: a double-sided projection system for silk exhibition comprises a projector, a screen and a projection frame, wherein the projection frame comprises a bearing plate, two lifting cylinders arranged on the bearing plate and first supporting rods connected in the two lifting cylinders in a sliding manner, the two first supporting rods are hinged with second supporting rods, the two second supporting rods are connected through a substrate, a roller for winding the screen is rotatably connected onto the substrate, a servo motor is installed on the substrate, a motor shaft of the servo motor is coaxially connected with the roller, and the projector is connected onto the substrate;

the first support rod and the second support rod are fixed through a limiting piece, the limiting piece comprises a v-shaped rod and through holes formed in the first support rod and the second support rod, the v-shaped rod penetrates through the two through holes respectively at two ends, and a fixing nut is connected to one penetrating end in a threaded mode; a stud is connected to the lifting cylinder in a threaded mode, one end of the stud is abutted to the first supporting rod, and a hexagonal groove is formed in the other end of the stud.

By adopting the technical scheme, during installation, an operator firstly supports the bearing plate and the ground, rotates the second support rod to a vertical state, then utilizes the 21274, the shape rod penetrates through the two through holes, screws up the fixing nut to fix the second support rod, then moves the first support rod upwards, after the substrate is tightly abutted to the ceiling, utilizes a hexagonal wrench to insert into the hexagonal groove to rotate the stud, so that the stud is tightly abutted to the first support rod to limit the movement of the first support rod, the projection frame is fixed through the top support of the bearing plate and the substrate, holes do not need to be punched in the ceiling in advance, when the position needs to be adjusted, the operator can correspondingly move the projection frame, the installation of the projection system is flexible and rapid, the installation requirement of different environments can be met; when the projector is used, an operator starts the servo motor to drive the roller to rotate, the screen is released, and the projector is opened, so that the projector is simple and convenient; in addition, when depositing at ordinary times, the operator rotates the second bracing piece and folds, saves occupation space.

The present invention in a preferred example may be further configured to: the first supporting rod and the second supporting rod are respectively connected with the bearing plate and the base plate through fastening screws; the first support rod and the second support rod are respectively provided with a through groove and an ear plate at opposite ends, a first pin hole penetrating through the through groove is formed in the first support rod, a second pin hole is formed in the ear plate, a pin shaft penetrating through the second pin hole is arranged in the first pin hole, and fastening nuts are connected to two ends of the pin shaft in a threaded mode.

By adopting the technical scheme, all parts of the projection frame can be detached independently, the occupied space is small, and the projection frame is convenient to carry, transport and replace.

The present invention in a preferred example may be further configured to: and one end of the yarn curtain, which is far away from the roller, is provided with a counterweight rod.

By adopting the technical scheme, when the screen is released and unfolded, the screen keeps straightening under the action of gravity of the counterweight rod, and the possibility that the projection picture is influenced by the fold of the screen is reduced.

The present invention in a preferred example may be further configured to: the projection frame is equipped with two, two the base plate has the guide rail through countersunk screw connection, sliding connection has the slide on the guide rail, projecting apparatus, servo motor and roller are all connected on the slide.

Through adopting above-mentioned technical scheme, two projection framves are in the same place through the guide rail series connection, and the operator can freely remove the slide and adjust the position of projecting apparatus and screen, and better cooperatees with the actual conditions in exhibition room, has further increased the flexibility and the application scope of system.

The present invention in a preferred example may be further configured to: the first supporting rod is supported with the bottom of the lifting barrel through a reinforcing piece.

Through adopting above-mentioned technical scheme, utilize the reinforcement to support first bracing piece, reduced the possibility that first bracing piece appears skidding when the bearing.

The present invention in a preferred example may be further configured to: the reinforcing piece comprises a thread groove formed in the lower end of the first supporting rod and extending along the length direction of the first supporting rod and a reinforcing column in threaded connection with the thread groove, an adjusting groove communicated with the thread groove is formed in the side wall of the first supporting rod, a spline groove is formed in the upper end of the reinforcing column, a spline shaft is inserted in the spline groove, one end of the spline shaft is rotatably connected in the adjusting groove, and a driving unit used for driving the spline shaft to rotate is arranged on the first supporting rod.

Through adopting above-mentioned technical scheme, the operator passes through drive unit drive integral key shaft and rotates, and the integral key shaft drives the reinforced column and rotates for the reinforced column removes along the thread groove, and is contradicted convenient and fast to the bottom of the barrel with the lift.

The present invention in a preferred example may be further configured to: the drive unit comprises a fixing plate connected to the side of the first supporting rod through a screw, a sliding block connected to the fixing plate in a sliding mode, and a driving gear connected to the sliding block in a rotating mode, and a driven gear meshed with the driving gear is arranged on the spline shaft.

By adopting the technical scheme, an operator moves the sliding block to drive the driving gear to be meshed with the driven gear, then rotates the driving gear to drive the driven gear to rotate, and further drives the spline shaft to rotate; because the drive unit is located outside the first support rod, abundant operation space is reserved for an operator, and meanwhile, the drive unit is detachably connected, so that the occupied space of the first support rod is reduced.

The present invention in a preferred example may be further configured to: and the sliding block is in threaded connection with a limiting screw of which one end is abutted against the fixed plate.

Through adopting above-mentioned technical scheme, when rotating the driving gear, the operator twists stop screw and fixed plate and supports tightly, fixes the slider, provides convenience for operator's rotation work.

The present invention in a preferred example may be further configured to: the reinforcing member includes adjusting block and a plurality of cushion, the arrangement groove has been seted up on the lift section of thick bamboo, threaded connection has the screw rod on the adjusting block, threaded connection has the spiral shell section of thick bamboo on the screw rod, be equipped with the adjusting plate on the spiral shell section of thick bamboo, one side that the adjusting plate is relative with the adjusting block is equipped with guide pillar and guide slot respectively, the one end of guide pillar is inserted in the guide slot, one side that the adjusting block deviates from the adjusting plate is seted up flutedly, the one end of screw rod is worn into in the recess, and the one end of wearing into is equipped with first bevel gear, be connected with the second bevel gear with first bevel gear engaged with through the center pin rotation on the recess cell wall, the.

Through adopting above-mentioned technical scheme, the operator piles up the cushion of suitable quantity in proper order at the lift section of thick bamboo bobbin base according to the position of first bracing piece bottom earlier, and when the cushion was close to first bracing piece bottom, the operator was put the adjusting block on the cushion, twisted center pin drive screw and rotated for the adjusting plate rebound is until supporting tightly with first bracing piece, and is simple and convenient.

The present invention in a preferred example may be further configured to: and a hexagonal block is arranged on the central shaft.

Through adopting above-mentioned technical scheme, the hexagonal piece utilizes hexagonal spanner to rotate the hexagonal piece for the operator and provides convenience.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the time that the traditional projector and the screen are required to be punched in advance when being installed is saved through the top bracing structure of the projection frame, the projection frame is foldable, all the parts are detachably connected, the occupied space is small, the application range is wide, and the flexibility is high;

2. the projection frames are connected in series through the guide rail and are matched with the sliding arrangement of the sliding plate, so that the positions of the projector and the screen can be freely adjusted; the first supporting rod is supported by the reinforcing piece, so that the bearing performance of the first support is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic structural diagram for embodying the projector and the screen in the embodiment.

FIG. 4 is a schematic structural diagram of a roller according to an embodiment.

FIG. 5 is a schematic structural diagram of a limiting member according to an embodiment.

FIG. 6 is a schematic structural diagram of a reinforcement member according to an embodiment.

FIG. 7 is a schematic structural diagram of a guide rail according to an embodiment.

Fig. 8 is a schematic structural diagram of the second embodiment.

FIG. 9 is a schematic structural diagram of the screw and the screw barrel according to the second embodiment.

Fig. 10 is a schematic structural diagram of the embodiment for embodying the guide pillar.

In the figure, 1, a projection frame; 11. a carrier plate; 12. a lifting cylinder; 13. a first support bar; 14. a second support bar; 15. a substrate; 151. a roller; 152. a servo motor; 16. a limiting member; 161. a through hole; 162. \ 21274; 163. fixing a nut; 17. a stud; 171. a hexagonal groove; 2. fastening screws; 21. a through groove; 22. an ear plate; 23. a first pin hole; 24. a second pin hole; 25. a pin shaft; 251. fastening a nut; 26. a weight lever; 3. a guide rail; 31. a slide plate; 4. a reinforcement; 41. a screw groove; 411. a reinforcement column; 42. an adjustment groove; 43. a spline groove; 44. a spline shaft; 5. a drive unit; 51. a fixing plate; 52. a slider; 53. a driving gear; 54. a driven gear; 55. a limit screw; 61. cushion blocks; 62. an adjusting block; 63. a placing groove; 64. a screw; 65. a screw cylinder; 651. an adjustment plate; 66. a guide post; 661. a guide groove; 7. a groove; 71. a first bevel gear; 72. a second bevel gear; 73. a central shaft; 731. a hexagonal block; 81. a projector; 82. a yarn curtain.

Detailed Description

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

The first embodiment is as follows: the invention discloses a double-sided projection system for silk exhibition, which comprises a projector 81, a screen 82 (shown in figure 3) and a projection rack 1, wherein the projection rack 1 comprises a bearing plate 11, two lifting cylinders 12 vertically arranged on the bearing plate 11 and a first supporting rod 13 slidably connected in the two lifting cylinders 12, the lifting cylinders 12 are in threaded connection with studs 17, one end of each stud 17 is abutted against the first supporting rod 13, and the other end of each stud 17 is provided with a hexagonal groove 171.

As shown in fig. 3 and 4, the two first supporting rods 13 are hinged to second supporting rods 14, the length of each second supporting rod 14 is smaller than that of each first supporting rod 13, one ends of the two second supporting rods 14, which are far away from the hinge point with the first supporting rods 13, are connected through a base plate 15, the base plate 15 is connected with a roller 151 in a rotating manner, a yarn curtain 82 is wound on the roller 151, a counterweight rod 26 is arranged at one end of the yarn curtain 82, which is far away from the roller 151, a servo motor 152 is further installed on the base plate 15, a motor shaft of the servo motor 152 is coaxially connected with one end of the roller 151, and projectors 81 are also installed on the base plate 15 and are distributed at.

As shown in FIG. 5, the first support rod 13 and the second support rod 14 are fixed by the limiting member 16, the limiting member 16 comprises a base 21274, a shape rod 162 and through holes 161, 21274, which are opened on the first support rod 13 and the second support rod 14, two ends of the shape rod 162 respectively pass through the two through holes 161, and one end of the passing through is in threaded connection with a fixing nut 163, at this time, the second support rod 14 and the first support rod 13 are in the same straight line, and an operator can fasten the fixing nut 163 to fix the second support rod 14.

The installation process comprises the following steps: during installation, an operator firstly supports the bearing plate 11 on the ground, then rotates the second support rod 14 and fixes the second support rod 14 by using the limiting part 16, moves the first support rod 13 upwards, after the substrate 15 is tightly abutted to the ceiling, the operator inserts a hexagon wrench into the inner six grooves 7 to rotate the stud 17, so that the stud 17 is tightly abutted to the first support rod 13, the movement of the first support rod 13 is limited, the projection frame 1 is fixed by the supporting force of the ground to the bearing plate 11 and the back supporting force of the ceiling to the substrate 15, during use, the operator starts the servo motor 152, drives the roller 151 to rotate, releases and unfolds the screen 82, and then opens the projector 81 to project a picture onto the screen 82.

Because need not to punch in advance on the ceiling during installation and installation work all goes on ground, convenient and fast, the construction safety is high, when needs adjustment projection frame 1 position, the operator only needs to descend first bracing piece 13, make base plate 15 and ceiling separation a segment distance, then with projection frame 1 moving as a whole can, the work that traditional construction needs repeated punching has been reduced, and is simple and convenient, when actual design, can adopt light pole material or inferior gram force board material with the main part of projection frame 1, so as to remove or increase the sight.

As shown in fig. 6, the first support bar 13 and the second support bar 14 are respectively connected with the carrier plate 11 and the base plate 15 by fastening screws 2 (as shown in fig. 1); a through groove 21 and an ear plate 22 are respectively arranged at the opposite ends of the first support rod 13 and the second support rod 14, the ear plate 22 is inserted in the through groove 21, a first pin hole 23 and a second pin hole 24 which penetrate through the first support rod 13 and the ear plate 22 are respectively arranged on the first support rod 13 and the ear plate 22, wherein the first pin hole 23 is communicated with the through groove 21, a pin shaft 25 is arranged in the first pin hole 23, the pin shaft 25 penetrates through the second pin hole 24, and two ends of the pin shaft 25 are both in threaded connection with fastening nuts 251; an operator screws the fastening nut 251 to tightly abut against the first support rod 13, so as to fix the pin 25, and the second support rod 14 rotates around the pin 25. When the portable multifunctional lifting support is stored at ordinary times, an operator can independently disassemble the bearing plate 11, the lifting cylinder 12, the first supporting rod 13, the second supporting rod 14 and the base plate 15, and the portable multifunctional lifting support is assembled on site, is beneficial to saving occupied space and is convenient to carry and transport.

As shown in fig. 7, the projection rack 1 is provided with two, two base plates 15 are connected with a guide rail 3 through a sunk screw (not labeled in the drawing), the base plates 15 are connected in series, a sliding plate 31 is connected on the guide rail 3 in a sliding way, a projector 81, a servo motor 152 and a roller 151 are connected on the sliding plate 31, and an operator can freely move the sliding plate 31 according to the arrangement of an exhibition hall and adjust the positions of the projector 81 and a screen 82. When a plurality of groups of projections are needed, an operator arranges the projection frames 1 in sequence in a linear mode, the number of the sliding plates 31 is increased, one lifting cylinder 12 part is reserved on each of the two bearing plates 11, the guide rail 3 and the two base plates 15 are fixed through countersunk screws, the base plates 15 are tightly abutted to the ceiling according to the installation steps, the projection frames 1 are fixed, a plurality of projection frames 1 do not need to be arranged, on one hand, partial space is saved, and on the other hand, the overall attractiveness of the system is improved.

As shown in fig. 6, the first support rod 13 is supported by the reinforcement member 4 and the bottom of the lift cylinder 12; the reinforcing member 4 comprises a thread groove 41 and a reinforcing column 411, the thread groove 41 is formed in the lower end of the first supporting rod 13 and extends along the length direction of the first supporting rod 13, the reinforcing column 411 is in threaded connection with the thread groove 41, an adjusting groove 42 communicated with the thread groove 41 is formed in one end, away from the notch of the thread groove 41, of the side wall of the first supporting rod 13, the width of the adjusting groove 42 is larger than the inner diameter of the thread groove 41, a spline groove 43 which is coaxially distributed is formed in the upper end of the reinforcing column 411, the spline groove 43 extends along the length direction of the reinforcing column 411, a spline shaft 44 is inserted in the spline groove 43, one end of the spline shaft 44 is rotatably connected into the adjusting groove 42, and a driving unit 5.

As shown in fig. 2, the driving unit 5 includes a fixing plate 51 connected to the first support rod 13 by a screw, the fixing plate 51 is perpendicular to the first support rod 13, a slider 52 is slidably connected to the fixing plate 51, a driving gear 53 is rotatably connected to the slider 52, a driven gear 54 engaged with the driving gear 53 is provided on the spline shaft 44, and a limit screw 55 having one end abutting against the fixing plate 51 is threadedly connected to the slider 52.

As shown in fig. 2, after the first supporting rod 13 is fixed, an operator slides the slider 52 first to enable the driving gear 53 and the driven gear 54 to approach and engage with each other, and then screws the limit screw 55 to tightly abut against the fixing plate 51 to fix the slider 52, and rotates the driving gear 53 to drive the driven gear 54 to rotate, so that the spline shaft 44 rotates, the spline shaft 44 drives the reinforcing column 411 to rotate, and further drives the reinforcing column 411 to gradually extend out of the screw groove 41 until abutting against the bottom of the lifting cylinder 12, thereby reducing the possibility of slipping of the first supporting rod 13 during bearing, and facilitating to enhance the bearing performance of the first supporting rod 13; the operator then removes the screws and removes the entire fixing plate 51.

Example two: a double-sided projection system for silk exhibition is disclosed, as shown in FIGS. 8 and 9, the difference from the first embodiment is that the reinforcement 4 comprises an adjusting block 62 and a plurality of cushion blocks 61, the length and width of the adjusting block 62 are the same as those of the cushion blocks 61, a screw 64 is connected to the adjusting block 62 by screw threads, a screw cylinder 65 is connected to the screw 64 by screw threads, an adjusting plate 651 is arranged on the screw cylinder 65, the adjusting plate 651 is parallel to the adjusting block 62, and a guide post 66 (shown in FIG. 10) and a guide groove 661 (shown in FIG. 10) are respectively arranged on opposite sides of the adjusting plate 651 and the adjusting block 62, one end of the guide post 66 is inserted into the guide groove 661, a groove 7 is arranged on one side of the adjusting block 62 away from the adjusting plate 651, a first bevel gear 71 is arranged on one end of the screw 64, a second bevel gear 72 meshed with the first bevel gear 71 is rotatably connected to the groove wall of the groove, a hexagonal block 731 is arranged at the penetrating end, a through groove 21 extending along the length direction of the lifting cylinder 12 is formed in the lifting cylinder 12, and the width of the through groove 21 is not smaller than that of the cushion block 61; when reinforcing first bracing piece 13, the operator stacks cushion block 61 in the lift section of thick bamboo 12 in proper order from logical groove 21, when top cushion block 61 to first bracing piece 13 lower extreme certain distance, put adjusting block 62 on cushion block 61 and make hexagonal piece 731 be located outside logical groove 21, then utilize the spanner to entangle hexagonal piece 731 and rotate center pin 73, center pin 73 drives second bevel gear 72 and rotates, second bevel gear 72 drives first bevel gear 71 and rotates, thereby make screw rod 64 rotate, drive barrel 65 drives adjusting plate 651 rebound, until supporting tightly with first bracing piece 13 lower extreme, moreover, the steam generator is simple in structure, and the installation, the dismantlement is convenient.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A two-sided projection system for silk displays, comprising a projector (81) and a screen (82), characterized in that: the screen cloth winding machine is characterized by further comprising a projection frame (1), wherein the projection frame (1) comprises a bearing plate (11), two lifting cylinders (12) arranged on the bearing plate (11) and first supporting rods (13) connected in the two lifting cylinders (12) in a sliding manner, the two first supporting rods (13) are hinged with second supporting rods (14), the two second supporting rods (14) are connected through a base plate (15), a roller (151) used for winding a screen (82) is connected to the base plate (15) in a rotating manner, a servo motor (152) is installed on the base plate (15), a motor shaft of the servo motor (152) is coaxially connected with the roller (151), and the projector (81) is connected to the base plate (15);

the first support rod (13) and the second support rod (14) are fixed through a limiting piece (16), the limiting piece (16) comprises a v-shaped rod (162) and through holes (161) formed in the first support rod (13) and the second support rod (14), the v-shaped rod (162) penetrates through the two through holes (161) at two ends respectively, and one penetrating end is in threaded connection with a fixing nut (163); threaded connection has double-screw bolt (17) on a lift section of thick bamboo (12), the one end and first bracing piece (13) of double-screw bolt (17) are contradicted, and hexagonal groove (171) have been seted up to the other end.

2. The silk exhibition duplex projection system of claim 1, further comprising: the first supporting rod (13) and the second supporting rod (14) are respectively connected with the bearing plate (11) and the base plate (15) through fastening screws (2); first bracing piece (13) and second bracing piece (14) are equipped with logical groove (21) and otic placode (22) respectively in relative one end, set up first pinhole (23) that run through logical groove (21) on first bracing piece (13), second pinhole (24) have been seted up on otic placode (22), be equipped with round pin axle (25) that pass second pinhole (24) in first pinhole (23), the equal threaded connection in both ends of round pin axle (25) has fastening nut (251).

3. The silk exhibition duplex projection system of claim 2, further comprising: and one end of the yarn curtain (82) far away from the roller (151) is provided with a counterweight rod (26).

4. The silk exhibition duplex projection system of claim 2, further comprising: projection frame (1) is equipped with two, two base plate (15) have guide rail (3) through countersunk screw connection, sliding connection has slide (31) on guide rail (3), projecting apparatus (81), servo motor (152) and roller (151) are all connected on slide (31).

5. A silk display bi-planar projection system as set forth in claim 1 or 4, wherein: the first supporting rod (13) is supported with the bottom of the lifting cylinder (12) through a reinforcing piece (4).

6. The silk exhibition duplex projection system of claim 5, further comprising: the reinforcing member (4) comprises a screw groove (41) formed in the lower end of the first supporting rod (13) and extending along the length direction of the first supporting rod (13) and a reinforcing column (411) in the screw groove (41) in a threaded connection mode, an adjusting groove (42) communicated with the screw groove (41) is formed in the side wall of the first supporting rod (13), a spline groove (43) is formed in the upper end of the reinforcing column (411), a spline shaft (44) is inserted in the spline groove (43), one end of the spline shaft (44) is rotatably connected in the adjusting groove (42), and a driving unit (5) used for driving the spline shaft (44) to rotate is arranged on the first supporting rod (13).

7. The silk exhibition duplex projection system of claim 6, further comprising: the driving unit (5) comprises a fixing plate (51) connected to the side of the first supporting rod (13) through a screw, a sliding block (52) connected to the fixing plate (51) in a sliding mode and a driving gear (53) connected to the sliding block (52) in a rotating mode, and a driven gear (54) meshed with the driving gear (53) is arranged on the spline shaft (44).

8. The silk exhibition duplex projection system of claim 7, further comprising: and a limit screw (55) with one end abutting against the fixed plate (51) is connected to the sliding block (52) in a threaded manner.

9. The silk exhibition duplex projection system of claim 5, further comprising: the reinforcing member (4) comprises an adjusting block (62) and a plurality of cushion blocks (61), a placing groove (63) is formed in the lifting cylinder (12), a screw rod (64) is connected to the adjusting block (62) in a threaded manner, a screw cylinder (65) is connected to the screw rod (64) in a threaded manner, an adjusting plate (651) is arranged on the screw cylinder (65), a guide pillar (66) and a guide groove (661) are respectively arranged on one side, opposite to the adjusting block (62), of the adjusting plate (651), one end of the guide pillar (66) is inserted into the guide groove (661), a groove (7) is formed in one side, away from the adjusting plate (651), of the adjusting block (62), one end of the screw rod (64) penetrates into the groove (7), a first bevel gear (71) is arranged at the penetrating end of the screw pillar, a second bevel gear (72) meshed with the first bevel gear (71) is rotatably connected to the wall of the groove (7) through a, one end of the central shaft (73) penetrates out of the adjusting block (62).

10. The silk exhibition duplex projection system of claim 9, further comprising: and a hexagonal block (731) is arranged on the central shaft (73).