CN213299507U

CN213299507U - Projection equipment for teaching

Info

Publication number: CN213299507U
Application number: CN202021932425.3U
Authority: CN
Inventors: 景伟华
Original assignee: Shaanxi Hemei Laser Technology Co ltd
Current assignee: Shaanxi Hemei Laser Technology Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-28
Anticipated expiration: 2030-09-07

Abstract

The utility model belongs to the technical field of projection equipment, especially, be a projection equipment for teaching, including the box, fixedly connected with two first electric putter in the box, two the top fixedly connected with first backup pad of first electric putter, fixedly connected with motor in the first backup pad, the bearing is worn to be equipped with at the top of first backup pad; this projection equipment is used in teaching, through setting up first electric putter, the extension of first electric putter shortens, can drive first backup pad and reciprocate, thereby realize the regulation of height about first backup pad, reach the purpose to first backup pad altitude mixture control, through setting up the motor, motor during operation, can drive the pivot and rotate, thereby it rotates to drive the second backup pad, realize the purpose to second backup pad horizontal rotation, the device adopts mutually supporting between each structure, the purpose of using is adjusted in a flexible way to projection equipment has been reached, whole device is rational in infrastructure, high durability and convenient use, therefore, the clothes hanger is strong in practicability.

Description

Projection equipment for teaching

Technical Field

The utility model belongs to the technical field of projection equipment, concretely relates to projection equipment is used in teaching.

Background

The projection equipment is a device capable of projecting images or videos onto a screen, can be connected with electronic equipment through different interfaces to play corresponding video signals, and is an optical instrument which utilizes an optical element to amplify the outline of a workpiece and projects the workpiece onto the screen.

For the projection equipment used by most colleges and universities in China at present, most of projection equipment in the existing multimedia classroom is completely fixed on a ceiling, so that the horizontal position and the height position of the projection equipment and the projection angle can not be adjusted or the adjustment angle is limited, certain inconvenience is brought to teaching of teachers, and the teaching efficiency is greatly influenced.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a projection equipment is used in teaching has that the practicality is good and the characteristics that the flexibility is good.

In order to achieve the above object, the utility model provides a following technical scheme: a projection device for teaching comprises a box body, wherein two first electric push rods are fixedly connected in the box body, the tops of the two first electric push rods are fixedly connected with a first supporting plate, a motor is fixedly connected in the first supporting plate, a bearing is arranged at the top of the first supporting plate in a penetrating manner, a rotating shaft is fixedly connected at the top end of an output shaft of the motor, penetrates through the bearing and is fixedly connected with a second supporting plate, a sliding groove is formed in the top of the first supporting plate, a pulley is slidably connected in the sliding groove, the pulley is fixedly connected at the bottom of the second supporting plate, a first supporting rod is fixedly connected at the top of the second supporting plate, a second movable rod is movably connected with the first supporting rod through a second pin shaft, a third supporting plate is fixedly connected at the top of the second movable rod, and a first movable rod is fixedly connected with the opposite surface of the, two the first movable rod all through first round pin axle swing joint third movable rod, two the opposite face fixedly connected with second electric putter of third movable rod.

Four recesses have been seted up at the top of third backup pad, four equal fixedly connected with slide bar in the recess, the surperficial sliding connection of slide bar has the sliding sleeve, four two grip blocks of fixedly connected with on the sliding sleeve, the spring has been cup jointed on the surface of slide bar, the both ends of spring fixed connection respectively are at sliding sleeve and recess inner wall.

As a further aspect of the present invention: four universal wheels are fixedly connected to the bottom of the box body, and the four universal wheels are respectively fixed to the positions, close to four corners, of the bottom of the box body.

As a further aspect of the present invention: the top of the box body is fixedly connected with a handle, and the surface of the handle is sleeved with an anti-slip sleeve.

As a further aspect of the present invention: two the equal fixedly connected with foam-rubber cushion of opposite face of grip block, the overlap joint has the projecting apparatus in the foam-rubber cushion, the rear side wear to be equipped with the bolt in the grip block, bolt and projecting apparatus threaded connection.

As a further aspect of the present invention: the box front side fixedly connected with control panel, control panel passes through the wire and each uses electrical apparatus electric connection.

As a further aspect of the present invention: the side surface of the box body is fixedly connected with a cover plate through a lock catch.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this projection equipment is used in teaching through setting up first electric putter, and the extension of first electric putter shortens, can drive first backup pad and reciprocate to the realization reaches the purpose to first backup pad altitude mixture control to the regulation of first backup pad height-adjusting from top to bottom, through setting up the motor, the motor during operation can drive the pivot and rotate, thereby drives the second backup pad and rotates, realizes the purpose to second backup pad horizontal rotation.

2. This projection equipment is used in teaching with the help of the rotation of pulley in the spout to the cooperation pivot drives the stable rotation of second backup pad, through setting up second electric putter, with the help of the rotation effect of first round pin axle and second round pin axle, shortens along with the extension of second electric putter, can drive the activity from top to bottom of third backup pad, reaches the purpose to projecting apparatus angle modulation.

3. This projection equipment is used in teaching through setting up the slide bar, with the help of the elasticity of spring, can make the grip block pass through the sliding sleeve and remove on the slide bar surface, realizes the removal in opposite directions to the grip block, reaches the better centre gripping of projecting apparatus and gets the purpose of putting, and the device adopts mutually supporting between each structure, has reached the nimble purpose of adjusting the use to projection equipment, and whole device is rational in infrastructure, convenient to use, and the practicality is strong.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a front view section of the present invention;

fig. 2 is a schematic structural view of a third supporting plate in the present invention;

FIG. 3 is a three-dimensional structural diagram of the middle box body of the present invention;

in the figure: 1. a box body; 2. a first electric push rod; 3. a first support plate; 4. a chute; 5. a pulley; 6. a second support plate; 7. a first support bar; 8. a third support plate; 9. a clamping plate; 10. a handle; 11. locking; 12. a second electric push rod; 13. a rotating shaft; 14. a bearing; 15. a motor; 16. a universal wheel; 17. a spring; 18. a slide bar; 19. a projector; 20. a sliding sleeve; 21. a groove; 22. a sponge cushion; 23. a control panel; 24. a cover plate; 25. a first movable bar; 26. a first pin shaft; 27. a second movable bar; 28. a second pin shaft; 29. a bolt; 30. an anti-slip sleeve; 31. a third movable bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a projection device for teaching comprises a box body 1, wherein two first electric push rods 2 are fixedly connected in the box body 1, the top parts of the two first electric push rods 2 are fixedly connected with a first supporting plate 3, the first electric push rods 2 are arranged to extend and contract so as to drive the first supporting plate 3 to move up and down, so that the height of the first supporting plate 3 can be adjusted, the purpose of adjusting the height of the first supporting plate 3 is achieved, a motor 15 is fixedly connected in the first supporting plate 3, a bearing 14 is arranged at the top part of the first supporting plate 3 in a penetrating manner, a rotating shaft 13 is fixedly connected at the top end of an output shaft of the motor 15, the rotating shaft 13 penetrates through the bearing 14 and is fixedly connected with a second supporting plate 6, the motor 15 is arranged to drive the rotating shaft 13 to rotate when the motor 15 works so as to drive the second supporting plate 6 to rotate, and the purpose of rotating the second supporting, the top of the first supporting plate 3 is provided with a chute 4, the chute 4 is internally and slidably connected with a pulley 5, by means of the rotation of the pulley 5 in the chute 4, the cooperating rotating shaft 13 drives the second supporting plate 6 to stably rotate, the pulley 5 is fixedly connected to the bottom of the second supporting plate 6, the top of the second supporting plate 6 is fixedly connected with a first supporting rod 7, the first supporting rod 7 is movably connected with a second movable rod 27 through a second pin shaft 28, the top of the second movable rod 27 is fixedly connected with a third supporting plate 8, opposite surfaces of the third supporting plate 8 and the first supporting rod 7 are respectively and fixedly connected with a first movable rod 25, the two first movable rods 25 are respectively and movably connected with a third movable rod 31 through a first pin shaft 26, opposite surfaces of the two third movable rods 31 are respectively and fixedly connected with a second electric push rod 12, by means of the arrangement of the second electric push rods 12, by means of the rotating action of, along with the extension and the shortening of the second electric push rod 12, the third supporting plate 8 can be driven to move up and down, and the purpose of adjusting the angle of the projector 19 is achieved;

four recesses 21 have been seted up at the top of third backup pad 8, equal fixedly connected with slide bar 18 in four recesses 21, slide bar 18's sliding surface is connected with sliding sleeve 20, through setting up slide bar 18, with the help of spring 17's elasticity, can make grip block 9 pass through sliding sleeve 20 and remove on slide bar 18 surface, the realization is to the relative movement of grip block 9, reach the better centre gripping of projecting apparatus 19 and the purpose of putting, two grip blocks 9 of fixedly connected with on four sliding sleeves 20, spring 17 has been cup jointed on slide bar 18's surface, spring 17's both ends difference fixed connection is at sliding sleeve 20 and recess 21 inner wall.

Specifically, four universal wheels 16 of box 1 bottom fixedly connected with, four universal wheels 16 fix respectively in the position that is close to the four corners in box 1 bottom, can make the user remove box 1 through setting up universal wheel 16, have improved the flexibility that box 1 used.

Specifically, 1 top fixedly connected with handle 10 of box, anti-skidding cover 30 has been cup jointed on handle 10 surface, through setting up anti-skidding cover 30, can increase the frictional force between user and the handle 10, avoids carrying the gliding condition to appear in-process, increase stability.

Specifically, the opposite faces of the two clamping plates 9 are fixedly connected with a sponge pad 22, a projector 19 is connected in the sponge pad 22 in a lap joint mode, a bolt 29 is arranged in the rear clamping plate 9 in a penetrating mode, and the bolt 29 is connected with the projector 19 in a threaded mode.

Specifically, 1 front side fixedly connected with control panel 23 of box, control panel 23 pass through the wire and each with electrical apparatus electric connection, through setting up control panel 23, make things convenient for user of service to control each with electrical apparatus's operating condition.

Specifically, the side of the box body 1 is fixedly connected with a cover plate 24 through a lock catch 11.

The utility model discloses a theory of operation does:

s1, when in use, a user can move the case body 1 to the use position through the handle 10 and the universal wheel 16, then the cover plate 24 is separated from the box body 1 by the buckling action of the lock catch 11, and simultaneously the control panel 23 is operated to enable the first electric push rod 2 to work, the first electric push rod 2 extends to drive the first supporting plate 3, the second supporting plate 6, the third supporting plate 8 and the clamping plate 9 to move upwards, when the clamping plate 9 moves upwards to the top of the box body 1, the first electric push rod 2 stops working by operating the control panel 23, then the two holding plates 9 are pulled outwards to put the projector 19 between the two holding plates 9, and after the putting is finished, then, by means of the elasticity of the spring 17, the holding plate 9 moves inwards through the sliding sleeve 20, so as to hold the projector 19, then, the bolt 29 is rotated to enable the bolt 29 to be in threaded connection with the projector 19, so that the projector 19 is better fixed;

s2, operating the control panel 23 to enable the first electric push rod 2 to continue to extend to a proper height, then operating the control panel 23 to enable the first electric push rod 2 to stop working, then operating the control panel 23 to start the motor 15 to work, driving the rotating shaft 13 to rotate when the motor 15 works, and driving the second supporting plate 6 to stably rotate to a use position by means of the rotation fit of the pulley 5 in the sliding groove 4;

s3, the second electric push rod 12 is started to work through the operation control panel 23, the third supporting plate 8 is driven to move up and down along with the extension and shortening of the second electric push rod 12 under the rotating action of the first pin shaft 26 and the second pin shaft 28, the purpose of adjusting the angle of the projector 19 is achieved, and then projection teaching is carried out.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a projection equipment is used in teaching, includes box (1), its characterized in that: the box body (1) is internally and fixedly connected with two first electric push rods (2), the tops of the two first electric push rods (2) are fixedly connected with a first supporting plate (3), the first supporting plate (3) is internally and fixedly connected with a motor (15), the top of the first supporting plate (3) is penetrated by a bearing (14), the top end of an output shaft of the motor (15) is fixedly connected with a rotating shaft (13), the rotating shaft (13) penetrates through the bearing (14) and is fixedly connected with a second supporting plate (6), the top of the first supporting plate (3) is provided with a sliding chute (4), the sliding chute (4) is internally and slidably connected with a pulley (5), the pulley (5) is fixedly connected at the bottom of the second supporting plate (6), the top of the second supporting plate (6) is fixedly connected with a first supporting rod (7), and the first supporting rod (7) is movably connected with a second movable rod (27) through a second pin shaft, a third support plate (8) is fixedly connected to the top of the second movable rod (27), first movable rods (25) are fixedly connected to the opposite surfaces of the third support plate (8) and the first support rod (7), the two first movable rods (25) are movably connected with third movable rods (31) through first pin shafts (26), and second electric push rods (12) are fixedly connected to the opposite surfaces of the two third movable rods (31);

four recesses (21), four have been seted up at the top of third backup pad (8) equal fixedly connected with slide bar (18) in recess (21), the surperficial sliding connection of slide bar (18) has sliding sleeve (20), four two grip blocks (9) of fixedly connected with on sliding sleeve (20), spring (17) have been cup jointed on the surface of slide bar (18), the both ends difference fixed connection of spring (17) is at sliding sleeve (20) and recess (21) inner wall.

2. A teaching projection device according to claim 1, wherein: the four universal wheels (16) are fixedly connected to the bottom of the box body (1), and the four universal wheels (16) are respectively fixed to the positions, close to four corners, of the bottom of the box body (1).

3. A teaching projection device according to claim 1, wherein: the top of the box body (1) is fixedly connected with a handle (10), and the surface of the handle (10) is sleeved with an anti-skid sleeve (30).

4. A teaching projection device according to claim 1, wherein: two the equal fixedly connected with foam-rubber cushion (22) of opposite face of grip block (9), overlap joint has projecting apparatus (19) in foam-rubber cushion (22), the rear side wear to be equipped with bolt (29) in grip block (9), bolt (29) and projecting apparatus (19) threaded connection.

5. A teaching projection device according to claim 1, wherein: the box body (1) front side fixedly connected with control panel (23), control panel (23) pass through the wire and each electrical apparatus electric connection with each.

6. A teaching projection device according to claim 1, wherein: the side surface of the box body (1) is fixedly connected with a cover plate (24) through a lock catch (11).