CN215569192U

CN215569192U - Courseware projection arrangement of music teaching

Info

Publication number: CN215569192U
Application number: CN202121813440.0U
Authority: CN
Inventors: 韩莹
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-18
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses a courseware projection device for music teaching, which comprises a base, wherein a fixed seat is fixedly connected to the bottom end of the base, wheels are fixedly connected to four corners of the bottom end of the fixed seat, brackets are symmetrically and fixedly connected to two sides of the base, an expansion bracket is annularly sleeved outside the brackets, a bottom shell is fixedly connected to the top end of the base, a shell is arranged outside the bottom shell, a fixed plate is fixedly connected to the top end of the shell, and two groups of vertical frames are fixedly connected to two sides of the top end of the fixed plate. This courseware projection arrangement of music teaching is through being provided with drain pan, shell, spacing groove, stopper, telescopic link and hydraulic cylinder, has realized altitude mixture control's function, carries out altitude mixture control according to the scene of difference, improves projection arrangement's rate of utilization, improves the comfort level of student's study, and the solution is that can't carry out altitude mixture control to the projecting apparatus, and application range is less behind the projecting apparatus fixed mounting, the problem of unable all-round use teaching.

Description

Courseware projection arrangement of music teaching

Technical Field

The utility model relates to the technical field of teaching equipment, in particular to a courseware projection device for music teaching.

Background

Present music course mainly imparts knowledge to students through the blackboard writing, the mr needs to drop into a large amount of time and carries out the chalk and write, teaching time overlength, teaching inefficiency, teaching vacancy has been remedied to the projected appearance of teaching, the mr only need during the lecture place teaching courseware data in just can demonstrate for the student teaching in the projecting apparatus, the trouble of textbook and chalk hand-written has been saved, projecting teaching at present stage can't carry out altitude mixture control to the projecting apparatus, application range is less behind projecting apparatus fixed mounting, unable all-round use teaching, the projecting apparatus can't remove, inconvenient removal is carried, the operation is comparatively troublesome, the use angle of projecting apparatus is unified fixedly, can't adjust the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a courseware projection device for music teaching, and aims to solve the problems that in the background technology, a projector cannot be adjusted in height, the projector is small in use range after being fixedly installed, and teaching cannot be used in all directions.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a courseware projection arrangement of music teaching, includes the base, the bottom fixedly connected with fixing base of base, four corner fixedly connected with wheels of fixing base bottom, the bilateral symmetry fixedly connected with support of base, the expansion bracket has been cup jointed to the outside annular of support, the top fixedly connected with drain pan of base, the outside of drain pan is provided with the shell, the top fixedly connected with fixed plate of shell, two sets of grudging posts of both sides fixedly connected with on fixed plate top, swing joint has the casing between the grudging post, the inside of casing is provided with the circuit board, the front end fixedly connected with protection casing of casing, the inside front end of casing is provided with projection lens, the top fixedly connected with roof of casing.

Preferably, the bilateral symmetry of drain pan is provided with two sets of spacing grooves, the inside bilateral symmetry of shell is provided with two sets of stoppers, be sliding connection between stopper and the spacing groove, the inside bottom fixedly connected with hydraulic cylinder of drain pan, hydraulic cylinder's top fixedly connected with telescopic link, the top of telescopic link and the bottom fixed connection of fixed plate.

Preferably, the telescopic frames are provided with four groups, the telescopic frames are inclined, and a square structure is formed between the telescopic frames.

Preferably, a plurality of groups of positioning holes are formed in the telescopic frame, the positioning holes are arranged in the telescopic frame at equal intervals, and a hand wheel is movably connected to the outer portions of the positioning holes.

Preferably, the inside of grudging post is provided with the gear, one side of gear is through mounting and the inside bottom fixed connection of grudging post, the rear end of gear is provided with the runner, be provided with the belt between gear and the runner, the size of gear and runner is the same, one side of gear is linked together with the casing, one side swing joint in the outside of grudging post has the crank, be linked together between crank and the runner.

Preferably, the protective cover is transparent, and the length of the top plate is greater than that of the shell.

Compared with the prior art, the utility model has the beneficial effects that: the courseware projection device for music teaching not only realizes the function of height adjustment, performs height adjustment according to different scenes, improves the utilization rate of the projection device, improves the learning comfort level of students, realizes the fixed function, can fix the position of the device while being convenient to move and carry, avoids position deviation during use, realizes the function of angle adjustment, performs angle adjustment on the projector, enlarges the projection range of the projector, performs adjustment according to actual conditions, and is simple and convenient to operate;

(1) by arranging the bottom shell, the limiting groove, the limiting blocks, the telescopic rod and the hydraulic cylinder, the hydraulic cylinder is started when the projection device is used, the telescopic rod is pushed upwards after the hydraulic cylinder runs, the shell at the top end of the telescopic rod moves upwards to drive the fixing plate to move upwards, the limiting blocks on two sides inside the shell slide upwards in the limiting groove, the stability of the shell during movement is improved, when the height is reduced, the telescopic rod moves downwards, the shell at the top end of the telescopic rod moves downwards to drive the fixing plate to move downwards, the function of height adjustment is realized, the height adjustment is carried out according to different scenes, the utilization rate of the projection device is improved, and the learning comfort level of students is improved;

(2) through the arrangement of the base, the telescopic frame, the hand wheel and the positioning hole, when the projection device is used, the projection device is pushed to a classroom, the hand wheel is rotated after the position is determined, the hand wheel moves towards the outside of the device, the telescopic frame is pulled outwards, the hand wheel is rotated in the opposite direction after the completion, the hand wheel moves towards the proper positioning hole, the telescopic frame is fixed in position, four groups of telescopic frames are arranged, the telescopic frames are inclined, the stability of the base is improved, after the use, the hand wheel is rotated to push the telescopic frame inwards, the hand wheel is rotated in the opposite direction after the completion and is fixed, the projection device can be moved and stored, the fixing function is realized, the projection device can be fixed in position while being convenient to move and carry, and the position deviation during the use is avoided;

(3) through being provided with runner, crank, gear and belt, rotate the crank during use, the crank drives the inside runner of grudging post and rotates, rotates and drives the gear rotation of equidimension the same through the belt, and the casing that is linked together with the gear carries out angle modulation, and the stall crank after adjusting, projection lens carry out the projection, have realized angle modulation's function, carry out angle modulation to the projecting apparatus, enlarge the projection scope of projecting apparatus, adjust according to actual conditions, easy operation is convenient.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic view of a front cross-sectional view of the telescopic rod of the present invention;

FIG. 3 is a schematic top view of the base of the present invention;

fig. 4 is a schematic side sectional view of the stand according to the present invention.

In the figure: 1. a wheel; 2. a hand wheel; 3. a base; 4. a bottom case; 5. a fixing plate; 6. a crank; 7. a circuit board; 8. a protective cover; 9. a top plate; 10. erecting a frame; 11. a housing; 12. a projection lens; 13. a telescopic rod; 14. a housing; 15. a limiting groove; 16. a limiting block; 17. a hydraulic cylinder; 18. positioning holes; 19. a telescopic frame; 20. a fixed seat; 21. a support; 22. a belt; 23. a rotating wheel; 24. a gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, a courseware projection device for music teaching comprises a base 3, wherein a fixed seat 20 is fixedly connected to the bottom end of the base 3, wheels 1 are fixedly connected to four corners of the bottom end of the fixed seat 20, brackets 21 are fixedly connected to two sides of the base 3 symmetrically, a bottom shell 4 is fixedly connected to the top end of the base 3, a shell 14 is arranged outside the bottom shell 4, a fixed plate 5 is fixedly connected to the top end of the shell 14, two sets of vertical frames 10 are fixedly connected to two sides of the top end of the fixed plate 5, a shell 11 is movably connected between the vertical frames 10, a circuit board 7 is arranged inside the shell 11, a protective cover 8 is fixedly connected to the front end of the shell 11, a projection lens 12 is arranged at the front end of the inside of the shell 11, and a top plate 9 is fixedly connected to the top end of the shell 11;

two sets of limiting grooves 15 are symmetrically arranged on two sides of the bottom shell 4, two sets of limiting blocks 16 are symmetrically arranged on two sides of the inner part of the shell 14, the limiting blocks 16 are in sliding connection with the limiting grooves 15, a hydraulic cylinder 17 is fixedly connected to the bottom end of the inner part of the bottom shell 4, a telescopic rod 13 is fixedly connected to the top end of the hydraulic cylinder 17, and the top end of the telescopic rod 13 is fixedly connected to the bottom end of the fixing plate 5;

specifically, as shown in fig. 1 and fig. 2, through being provided with drain pan 4, shell 14, spacing groove 15, stopper 16, telescopic link 13 and hydraulic cylinder 17, hydraulic cylinder 17 is started during the use, hydraulic cylinder 17 promotes telescopic link 13 upwards after the operation, the shell 14 rebound on telescopic link 13 top, drive fixed plate 5 and upwards move, stopper 16 of the inside both sides of shell 14 upwards slides in spacing groove 15, stability when improving shell 14 and removing, when reducing the height, telescopic link 13 moves down, shell 14 on telescopic link 13 top moves down, drive fixed plate 5 and move down, the function of altitude mixture control has been realized, altitude mixture control is carried out according to the scene of difference, the rate of utilization of projection arrangement is improved, the comfort level of student's study is improved.

Example 2: the outer part of the bracket 21 is annularly sleeved with four groups of telescopic frames 19, the telescopic frames 19 are inclined, and a square structure is formed between the telescopic frames 19;

a plurality of groups of positioning holes 18 are formed in the telescopic frame 19, the positioning holes 18 are arranged in the telescopic frame 19 at equal intervals, and the hand wheel 2 is movably connected to the outer part of each positioning hole 18;

specifically, as shown in fig. 1 and 3, by providing the base 3, the expansion bracket 19, the hand wheel 2 and the positioning hole 18, when in use, the projection device is pushed to a classroom, the hand wheel 2 is rotated after the position is determined, the hand wheel 2 moves to the outside of the device, the expansion bracket 19 is pulled outwards, the hand wheel 2 is rotated in the opposite direction after the completion, the hand wheel 2 moves in the appropriate positioning hole 18, the expansion bracket 19 is fixed in position, four groups of expansion brackets 19 are provided, the expansion bracket 19 is inclined, the stability of the base 3 is improved, after the use, the hand wheel 2 is rotated, the expansion bracket 19 is pushed inwards, the hand wheel 2 is rotated in the opposite direction after the completion, the projection device can be moved and stored, the fixing function is realized, the projection device can be fixed in position while being conveniently moved and carried, and the position deviation during use is avoided.

Example 3: a gear 24 is arranged in the vertical frame 10, one side of the gear 24 is fixedly connected with the bottom end in the vertical frame 10 through a fixing piece, a rotating wheel 23 is arranged at the rear end of the gear 24, a belt 22 is arranged between the gear 24 and the rotating wheel 23, the gear 24 and the rotating wheel 23 are the same in size, one side of the gear 24 is communicated with the shell 11, a crank 6 is movably connected with one side of the outer part of the vertical frame 10, and the crank 6 is communicated with the rotating wheel 23;

the protective cover 8 is transparent, and the length of the top plate 9 is greater than that of the shell 11;

specifically, as shown in fig. 1 and 4, by providing the rotating wheel 23, the crank 6, the gear 24 and the belt 22, the crank 6 is rotated during use, the crank 6 drives the rotating wheel 23 inside the stand 10 to rotate, the gear 24 with the same size is driven to rotate through the belt 22 in a rotating manner, the shell 11 communicated with the gear 24 is subjected to angle adjustment, the crank 6 is stopped to rotate after adjustment, the projection lens 12 performs projection, the function of angle adjustment is realized, angle adjustment is performed on the projector, the projection range of the projector is expanded, adjustment is performed according to actual conditions, and the operation is simple and convenient.

The working principle is as follows: when the utility model is used, a teacher moves a projection device to a classroom, the handwheel 2 is rotated after the position is determined, the handwheel 2 moves towards the outside of the device, the telescopic frames 19 are pulled outwards, the handwheel 2 is rotated in the opposite direction after the operation, the handwheel 2 moves towards the proper positioning hole 18 to fix the position of the telescopic frames 19, after the four groups of telescopic frames 19 are adjusted to the same height, the hydraulic cylinder 17 is started, the telescopic rod 13 is pushed upwards after the hydraulic cylinder 17 operates, the shell 14 at the top end of the telescopic rod 13 moves upwards to drive the fixing plate 5 to move upwards, the limiting blocks 16 at the two sides inside the shell 14 slide upwards in the limiting grooves 15 to improve the stability when the shell 14 moves, the crank 6 is rotated, the crank 6 drives the rotating wheel 23 inside the vertical frame 10 to rotate, the belt 22 drives the gear 24 with the same size to rotate, the shell 11 communicated with the gear 24 is subjected to angle adjustment, and the crank 6 is stopped to rotate after the adjustment, the projector is started, the content of the music courseware is displayed through the projection lens 12, after the use, the hand wheel 2 is rotated, the expansion bracket 19 is pushed inwards, after the use, the hand wheel 2 is rotated in the opposite direction to be fixed, and the projection device can be moved and stored.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a courseware projection arrangement of music teaching, includes base (3), its characterized in that: the bottom of the base (3) is fixedly connected with a fixed seat (20), four corners of the bottom of the fixed seat (20) are fixedly connected with wheels (1), two sides of the base (3) are fixedly connected with supports (21), an expansion bracket (19) is sleeved on the outer portion of each support (21), the top end of the base (3) is fixedly connected with a bottom shell (4), an outer shell (14) is arranged on the outer portion of the bottom shell (4), a fixed plate (5) is fixedly connected to the top end of the outer shell (14), two groups of vertical frames (10) are fixedly connected to the two sides of the top end of the fixed plate (5), a shell (11) is movably connected between the vertical frames (10), a circuit board (7) is arranged inside the shell (11), the front end of the shell (11) is fixedly connected with a protective cover (8), and the front end inside the shell (11) is provided with a projection lens (12), the top end of the shell (11) is fixedly connected with a top plate (9).

2. A courseware projection apparatus for music teaching according to claim 1, wherein: the bilateral symmetry of drain pan (4) is provided with two sets of spacing grooves (15), the inside bilateral symmetry of shell (14) is provided with two sets of stoppers (16), be sliding connection between stopper (16) and spacing groove (15), the inside bottom fixedly connected with hydraulic cylinder (17) of drain pan (4), the top fixedly connected with telescopic link (13) of hydraulic cylinder (17), the top of telescopic link (13) and the bottom fixed connection of fixed plate (5).

3. A courseware projection apparatus for music teaching according to claim 1, wherein: four groups of telescopic frames (19) are arranged, the telescopic frames (19) are inclined, and a square structure is formed between the telescopic frames (19).

4. A courseware projection apparatus for music teaching according to claim 1, wherein: a plurality of groups of positioning holes (18) are formed in the telescopic frame (19), the positioning holes (18) are arranged in the telescopic frame (19) at equal intervals, and a hand wheel (2) is movably connected to the outer portions of the positioning holes (18).

5. A courseware projection apparatus for music teaching according to claim 1, wherein: the inside of grudging post (10) is provided with gear (24), the inside bottom fixed connection of mounting and grudging post (10) is passed through to one side of gear (24), the rear end of gear (24) is provided with runner (23), be provided with belt (22) between gear (24) and runner (23), gear (24) are the same with the size of runner (23), one side of gear (24) is linked together with casing (11), one side swing joint in grudging post (10) outside has crank (6), be linked together between crank (6) and runner (23).

6. A courseware projection apparatus for music teaching according to claim 1, wherein: the protective cover (8) is transparent, and the length of the top plate (9) is greater than that of the shell (11).