CN209591184U

CN209591184U - One kind can show world music historical progress convenient for colleges and universities' music theory learning device

Info

Publication number: CN209591184U
Application number: CN201822089731.4U
Authority: CN
Inventors: 王飞; 念丽
Original assignee: Qujing Normal University
Current assignee: Qujing Normal University
Priority date: 2018-12-12
Filing date: 2018-12-12
Publication date: 2019-11-05
Anticipated expiration: 2028-12-12

Abstract

The utility model discloses one kind, and world music historical progress can be shown convenient for colleges and universities' music theory learning device, including installation of ceiling plate, the lower end center outer surface of the installation of ceiling plate is fixedly installed with telescopic shaft, the lower end of the telescopic shaft is provided with bayonet cylinder, the lower end outer surface of the bayonet cylinder is fixedly installed with No.1 disk, the bayonet cylinder is internally provided with piston, the lower end outer surface of the No.1 disk is provided with No. two disks, and a side external surface of the No.1 disk is provided with trumpeter's the turn of the screw.One kind described in the utility model can show world music historical progress convenient for colleges and universities' music theory learning device, equipped with piston, No.1 disk, No. two disks and Air Filter, it can facilitate and adjust height and position and towards angle, projector can also individually be dismantled, it can also prevent dust from entering inside projector at heat dissipation hole, and easy cleaning Air Filter brings better prospect of the application.

Description

One kind can show world music historical progress convenient for colleges and universities' music theory learning device

Technical field

The utility model relates to teaching auxiliary device field, in particular to one kind can show that world music historical progress is convenient for Colleges and universities' music theory learning device.

Background technique

Currently, colleges and universities' music subject can selectively allow student to understand and learn world music historical progress, most teachers are logical The methods of image video and audio frequency are crossed, is given lessons student, and in order to make all students in entire classroom can be clearly See image video, this is just needed using to ceiling projecting apparatus, it can scale up original video, be projected on curtain, make Student preferably watches；There are certain drawbacks in existing ceiling projecting apparatus, firstly, regulative mode is single, and tie when in use Structure is many and diverse, has certain inconvenience, secondly, most of ceiling projecting apparatus are structure as a whole with installation of ceiling plate, projector failure When, whole dismounting is needed, is more troublesome, in addition, in use, dust and other impurities particle can enter from thermovent to be thrown It is internal, it is difficult to clear up, there is centainly unfavorable, certain adverse effect is brought to the use process of people, for this purpose, we mention One kind can show world music historical progress convenient for colleges and universities' music theory learning device out.

Utility model content

The main purpose of the utility model is to provide one kind, and world music historical progress can be shown convenient for colleges and universities' music reason By learning device, the problems in background technique can be effectively solved.

To achieve the above object, the technical solution that the utility model is taken are as follows:

One kind can show world music historical progress convenient for colleges and universities' music theory learning device, including installation of ceiling plate, institute The lower end center outer surface for stating installation of ceiling plate is fixedly installed with telescopic shaft, and the lower end of the telescopic shaft is provided with bayonet cylinder, institute The lower end outer surface for stating bayonet cylinder is fixedly installed with No.1 disk, and the bayonet cylinder is internally provided with piston, the No.1 circle The lower end outer surface of disk is provided with No. two disks, and a side external surface of the No.1 disk is provided with trumpeter's the turn of the screw, described Another side external surface of No.1 disk is provided with two trumpeter's the turn of the screws, and the lower end outer surface of No. two disks is fixedly installed with throwing Shadow instrument, a side external surface of the projector are provided with connection jaws, and one side external surface of front end of the projector is fixedly installed with Radiator window, another side external surface in the front end of the projector are fixedly installed with projection lens, the back end outer surface of the radiator window It is fixedly installed with Air Filter.

The outer ring of piston is fixed with rubber ring, and the diameter of rubber ring is slightly larger than the diameter of bayonet cylinder hollow space, rubber ring Between piston and bayonet cylinder, by the extruding of the two, when the vertical movement of bayonet cylinder and knob activity, need a degree of Active force, just achievable corresponding adjusting.

No.1 disk is installed on the lower end of bayonet cylinder, and No. two disks are installed on the upper end of projector, No.1 disk and No. two Disk dismantles two groups of hand the turn of the screws, individually can dismantle projector and motionless other structures by two groups of hand the turn of the screw assemblings.

Radiator window offers several groups hole, acts on the heat dissipation of projector, and the rear end of radiator window is Air Filter, can be stopped Dust prevents dust from entering inside projector by hole, and radiator window is installed on the front end of projector by two groups of fixing bolts Side, backs out two groups of fixing bolts respectively, detachable radiator window, after dismantling radiator window, turn then can easy cleaning it is dust-proof Net.

Preferably, the outer wall of the piston is provided with rubber ring, and the outer wall of the piston passes through rubber ring and bayonet cylinder Inner wall is slidably connected.

Preferably, a side external surface and No. two disks for No.1 disk is run through in the lower end outer surface of the trumpeter the turn of the screw A side external surface detachable connection, the other side appearance of No.1 disk is run through in the lower end outer surface of the two trumpeters the turn of the screw Another side external surface detachable connection in face and No. two disks.

Preferably, fixing bolt is provided between the radiator window and projector, two side external surfaces of the radiator window are equal By the one side external surface detachable connection of front end of fixing bolt and projector, the quantity of fixing bolt is two groups.

Preferably, No.1 fixed block is provided between the telescopic shaft and installation of ceiling plate, outside the upper end of the telescopic shaft Surface is fixedly connected by No.1 fixed block with the lower end center outer surface of installation of ceiling plate.

Preferably, described No. two are provided with No. two fixed blocks between disk and projector, outside the lower end of No. two disks Surface is fixedly connected by No. two fixed blocks with the upper center outer surface of projector.

Compared with prior art, the utility model has the following beneficial effects: the one kind can show world music history into Journey is convenient for colleges and universities' music theory learning device, and by the piston of setting, piston can be moved in bayonet cylinder internal vertical, can be adjusted Height of projector position, and can knob activity, be adjusted projector towards angle, pass through the No.1 disk of setting and No. two circles Disk, No.1 disk are installed on the lower end of bayonet cylinder, and No. two disks are installed on the upper end of projector, and No.1 disk and No. two disks are logical Two groups of hand the turn of the screw assemblings are crossed, two groups of hand the turn of the screws is dismantled, individually can dismantle projector and motionless other structures, radiator window Setting, radiator window rear end is provided with Air Filter, can prevent the particulate matters such as dust from entering inside projector, and radiator window can be in throwing It is dismantled on shadow instrument, Air Filter is convenient to clean after disassembly, be conducive to people and use, entire one kind can show world music historical progress just Simple in colleges and universities' music theory learning device structure, easy to operate, the effect used is more preferable relative to traditional approach.

Detailed description of the invention

Fig. 1 is that the utility model one kind can show world music historical progress convenient for the whole of colleges and universities' music theory learning device Body structural schematic diagram.

Fig. 2 is that the utility model one kind can show that world music historical progress is convenient for the office of colleges and universities' music theory learning device Portion's view.

Fig. 3 is that the utility model one kind can show that world music historical progress is convenient for the figure of colleges and universities' music theory learning device The sectional view of telescopic shaft 2 and bayonet cylinder 3 in 2.

Fig. 4 is that the utility model one kind can show that world music historical progress is convenient for the figure of colleges and universities' music theory learning device The enlarged drawing of A in 2.

Fig. 5 is that the utility model one kind can show that world music historical progress is convenient for the figure of colleges and universities' music theory learning device The enlarged drawing of B in 2.

In figure: 1, installation of ceiling plate；2, telescopic shaft；3, bayonet cylinder；4, projector；5, radiator window；6, connection jaws；7, it projects Camera lens；8, piston；9, No.1 disk；10, No. two disks；11, trumpeter's the turn of the screw；12, two trumpeter's the turn of the screw；13, Air Filter.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described.

As shown in Figs. 1-5, one kind can show that world music historical progress is convenient for colleges and universities' music theory learning device, including hang Mounting plate 1 is pushed up, the lower end center outer surface of installation of ceiling plate 1 is fixedly installed with telescopic shaft 2, and the lower end of telescopic shaft 2 is provided with card Mouth cylinder 3, the lower end outer surface of bayonet cylinder 3 are fixedly installed with No.1 disk 9, and bayonet cylinder 3 is internally provided with piston 8, No.1 circle The lower end outer surface of disk 9 is provided with No. two disks 10, and a side external surface of No.1 disk 9 is provided with trumpeter's the turn of the screw 11, and one Another side external surface of number disk 9 is provided with two trumpeter's the turn of the screws 12, and the lower end outer surface of No. two disks 10 is fixedly installed with throwing Shadow instrument 4, a side external surface of projector 4 are provided with connection jaws 6, and one side external surface of front end of projector 4 is fixedly installed with heat dissipation Window 5, another side external surface in the front end of projector 4 are fixedly installed with projection lens 7, and the back end outer surface of radiator window 5 is fixedly mounted There is Air Filter 13.

The outer wall of piston 8 is provided with rubber ring, and the outer wall of piston 8 is slidably connected by the inner wall of rubber ring and bayonet cylinder 3, Bayonet cylinder 3 can be basic point with piston 8, carry out turn-knob and vertical movement；The lower end outer surface of one trumpeter's the turn of the screw 11 runs through one Number a side external surface of disk 9 and a side external surface detachable connection of No. two disks 10, the lower end of two trumpeter's the turn of the screws 12 Outer surface can make through another side external surface of No.1 disk 9 and another side external surface detachable connection of No. two disks 10 Projector 4 is easy to disassemble；Fixing bolt is provided between radiator window 5 and projector 4, two side external surfaces of radiator window 5 pass through The one side external surface detachable connection of front end of fixing bolt and projector 4, the quantity of fixing bolt are two, and radiator window 5 is convenient for Disassembly, and overturn after the disassembly of radiator window 5, Air Filter 13 can be convenient to clean；One is provided between telescopic shaft 2 and installation of ceiling plate 1 The upper end outer surface of number fixed block, telescopic shaft 2 connects by the way that the lower end center outer surface of No.1 fixed block and installation of ceiling plate 1 is fixed It connects, telescopic shaft 2 is made to be fixed on the lower end of installation of ceiling plate 1；No. two fixed blocks are provided between No. two disks 10 and projector 4, The lower end outer surface of No. two disks 10 is fixedly connected by No. two fixed blocks with the upper center outer surface of projector 4, makes to project Instrument 4 is fixed on the lower end of No. two disks 10.

It should be noted that the utility model is that one kind can show world music historical progress convenient for colleges and universities' music theory Device is practised, when installation, we first use four groups of screws to pass through the preformed hole on installation of ceiling plate 1, extremely by the installation of installation of ceiling plate 1 On multi-media classroom ceiling, connection jaws 6 are connected to power supply using electric wire later, in use, projector 4 by data line with Computer connects, and the video software broadcasting world music historical progress correlation on computer is audio-visual, passes through data line later and transmits Image, projector 4, which will affect, to be projected on curtain, and classroom student is enable clearly to watch, wherein is pacified the lower end of telescopic shaft 2 Equipped with piston 8, piston 8 the height position of projector 4 can be adjusted with this in the internal vertical activity of bayonet cylinder 3 and knob activity It sets with towards angle, radiator window 5 offers several groups hole, acts on the heat dissipation of projector 4, and the rear end of radiator window 5 is dust-proof Net 13 can stop dust, and radiator window 5 is installed on the front end of projector 4 by two groups of fixing bolts, back out two groups of fixing bolts, Detachable radiator window 5, easy cleaning Air Filter 13, No.1 disk 9 and No. two disks 10 pass through trumpeter's the turn of the screw 11, two trumpeters The turn of the screw 12 assembles, and backs out trumpeter's the turn of the screw 11 and two trumpeter's the turn of the screws 12 respectively, can individually remove projector 4, more in fact With.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims

1. one kind can show that world music historical progress is convenient for colleges and universities' music theory learning device, including installation of ceiling plate (1), Be characterized in that: the lower end center outer surface of the installation of ceiling plate (1) is fixedly installed with telescopic shaft (2), the telescopic shaft (2) Lower end is provided with bayonet cylinder (3), and the lower end outer surface of the bayonet cylinder (3) is fixedly installed with No.1 disk (9), the bayonet cylinder (3) be internally provided with piston (8), the lower end outer surface of the No.1 disk (9) is provided with No. two disks (10), the No.1 One side external surface of disk (9) is provided with trumpeter's the turn of the screw (11), and another side external surface of the No.1 disk (9) is provided with The lower end outer surface of two trumpeter's the turn of the screws (12), No. two disks (10) is fixedly installed with projector (4), the projector (4) a side external surface is provided with connection jaws (6), and one side external surface of front end of the projector (4) is fixedly installed with radiator window (5), another side external surface in front end of the projector (4) is fixedly installed with projection lens (7), the rear end of the radiator window (5) Outer surface is fixedly installed with Air Filter (13).

2. one kind according to claim 1 can show that world music historical progress is convenient for colleges and universities' music theory learning device, It is characterized by: the outer wall of the piston (8) is provided with rubber ring, the outer wall of the piston (8) passes through rubber ring and bayonet cylinder (3) inner wall is slidably connected.

3. one kind according to claim 1 can show that world music historical progress is convenient for colleges and universities' music theory learning device, It is characterized by: the lower end outer surface of the trumpeter the turn of the screw (11) is through a side external surface of No.1 disk (9) and No. two No.1 disk is run through in the lower end outer surface of one side external surface detachable connection of disk (10), the two trumpeters the turn of the screw (12) (9) another side external surface detachable connection of another side external surface and No. two disks (10).

4. one kind according to claim 1 can show that world music historical progress is convenient for colleges and universities' music theory learning device, It is characterized by: fixing bolt is provided between the radiator window (5) and projector (4), the two sides appearance of the radiator window (5) Face passes through the one side external surface detachable connection of front end of fixing bolt Yu projector (4), and the quantity of fixing bolt is two groups.

5. one kind according to claim 1 can show that world music historical progress is convenient for colleges and universities' music theory learning device, It is characterized by: be provided with No.1 fixed block between the telescopic shaft (2) and installation of ceiling plate (1), the telescopic shaft (2) it is upper End outer surface is fixedly connected by No.1 fixed block with the lower end center outer surface of installation of ceiling plate (1).

6. one kind according to claim 1 can show that world music historical progress is convenient for colleges and universities' music theory learning device, It is characterized by: No. two fixed blocks are provided between No. two disks (10) and projector (4), No. two disks (10) Lower end outer surface is fixedly connected by No. two fixed blocks with the upper center outer surface of projector (4).