CN212273589U

CN212273589U - Computer multimedia teaching projection arrangement

Info

Publication number: CN212273589U
Application number: CN202021072615.2U
Authority: CN
Inventors: 曾碧华
Original assignee: Hunan Institute of Traffic Engineering
Current assignee: Hunan Institute of Traffic Engineering
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-01-01
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a computer multimedia teaching projection arrangement, the on-line screen storage device comprises a base, the equal fixed mounting in four corners department of base bottom has the locking universal wheel, the mounting groove has been seted up to the inside of base, the inside of mounting groove is rotated and is connected with two threaded rods, fixed mounting has the sprocket on the threaded rod, two chain wheel go up the meshing and be connected with the chain, fixed mounting has driven bevel gear on one of them threaded rod, the inside fixed mounting of mounting groove has driving motor, fixed mounting has drive bevel gear on driving motor's the output shaft, drive bevel gear is connected with driven bevel gear meshing, threaded connection has the backup pad on the threaded rod, the inside sliding connection of backup. The utility model relates to a teaching auxiliary assembly technical field, simple structure, convenient operation has improved the mobility flexibility of device and the stability of use, is favorable to the use of device.

Description

Computer multimedia teaching projection arrangement

Technical Field

The utility model relates to a teaching auxiliary assembly technical field especially relates to a computer multimedia teaching projection arrangement.

Background

A projector is an optical instrument that magnifies the contour of a workpiece using an optical element and projects it onto a screen. It can be used for profile measurement by transmitted light, and also can be used for measuring the surface shape of a blind hole and observing the surface of a part by reflected light. The projector is particularly suitable for measuring complex contours and small workpieces, such as clock parts, stamping parts, electronic elements, templates, dies, threads, gears, forming cutters and the like, and has high inspection efficiency and convenient use; the device is widely applied to metering rooms and production workshops, and is particularly suitable for the industries of instruments and meters and clocks; a projector, also called a projector, is a device that can project images or videos onto a curtain, and can be connected with a computer, a VCD, a DVD, a BD, a game machine, a DV, etc. through different interfaces to play corresponding video signals.

The prior patent (publication number: CN 210039171U) provides a computer multimedia teaching projection device, which solves the problems that most projectors in the prior art can not be well used when light exists, and the projector is inconvenient to move, the heights of a projection lens and a screen are not easy to adjust, and the teaching requirements can not be well met.

However, the apparatus still has the following problems: flexible process needs manual regulation, complex operation, there is certain defect in the in-process of removal, mobility and the flexibility that leads to the device are lower, inside through the rotary disk is provided with the rotation axis, through setting up projecting apparatus equipment etc. in rotatory axle head, can realize the circumference rotation effect of projecting apparatus, do not fix after rotating, stability is relatively poor, the condition that the rotary disk autobiography probably exists takes place, influence the use of equipment, for this reason, we propose a computer multimedia teaching projection arrangement and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem existing in the prior art and providing a computer multimedia teaching projection arrangement.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a computer multimedia teaching projection device comprises a base, wherein locking universal wheels are fixedly arranged at four corners of the bottom of the base, a mounting groove is formed in the base, two threaded rods are rotatably connected in the mounting groove, a sprocket is fixedly arranged on each threaded rod, a chain is meshed and connected with the two sprockets, a driven bevel gear is fixedly arranged on one threaded rod, a driving motor is fixedly arranged in the mounting groove, a driving bevel gear is fixedly arranged on an output shaft of the driving motor and meshed and connected with the driven bevel gear, a supporting plate is connected on each threaded rod in a threaded manner, two limiting columns are slidably connected in the supporting plate, the bottoms of the limiting columns are fixedly connected with the top of the base, a mounting plate is fixedly arranged on the supporting plate, a mounting cavity is formed in the mounting plate, a rotating rod is rotatably connected in the mounting cavity, a placing shell is fixedly arranged at, the projector is placed in the placing shell, the top of the placing shell is in threaded connection with an adjusting screw rod, the bottom of the adjusting screw rod is connected with a pressing plate in a rotating mode, a worm wheel is fixedly mounted on the rotating rod, the mounting cavity is connected with a worm in an internal rotating mode, and the worm is meshed with the worm wheel and connected with the worm.

Preferably, one side of the pressure plate is fixedly provided with a non-slip mat, and the non-slip mat is made of rubber.

Preferably, one end of the adjusting screw is fixedly connected with a handle, and the handle is positioned at the top of the placing shell.

Preferably, an opening for the worm to pass through is formed in the mounting plate, and a rotating hand wheel is fixedly connected to one end, through which the mounting plate passes, of the mounting plate.

Preferably, the inside of backup pad is seted up the blind hole, is seted up on the inner wall of blind hole and has the internal thread, and the internal thread is with threaded rod looks adaptation.

Preferably, the worm wheel is made of stainless steel, and the outer surface of the worm wheel is sprayed with wear-resistant paint.

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

1. the driving bevel gear is driven to rotate by starting the driving motor, the driven bevel gear is driven to rotate, one of the threaded rods is driven to rotate, one of the chain wheels is driven to rotate, the other chain wheel is driven to rotate by a chain, the two threaded rods are driven to rotate simultaneously, the supporting plate is limited by the rotation of the threaded rods and the limiting columns to rotate, and can move up and down, so that the lifting of the device is realized, the operation is simple, the use is convenient, the worm is driven to rotate by rotating the worm, the rotating rod is driven to rotate, the adjustment of the projection angle is realized, the self-locking property of the worm wheel and the worm is utilized, the condition that the rotating rod automatically transmits can be effectively avoided, and the stability of the;

2. the installation through the locking universal wheel has made things convenient for the removal of device, and through the auto-lock function that the locking universal wheel has, makes placing of device more stable, makes the device remove with place all very conveniently, has improved the mobility and the flexibility of device.

Drawings

Fig. 1 is a schematic diagram of a main structure of a computer multimedia teaching projection apparatus provided by the present invention;

fig. 2 is a schematic view of a cross-sectional structure in the front view direction of the computer multimedia teaching projection apparatus provided by the present invention;

fig. 3 is the utility model provides a connection structure of worm gear among computer multimedia teaching projection arrangement schematic diagram.

In the figure: 1. a base; 2. a threaded rod; 3. a sprocket; 4. a chain; 5. a driven bevel gear; 6. a drive motor; 7. a drive bevel gear; 8. a support plate; 9. a limiting column; 10. mounting a plate; 11. a rotating rod; 12. placing the shell; 13. a projector; 14. adjusting the screw rod; 15. pressing a plate; 16. a non-slip mat; 17. a handle; 18. a worm gear; 19. a worm; 20. rotating a hand wheel; 21. and locking the universal wheels.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a computer multimedia teaching projection device comprises a base 1, locking universal wheels 21 are fixedly installed at four corners of the bottom of the base 1, an installation groove is formed in the base 1, two threaded rods 2 are rotatably connected to the interior of the installation groove, chain wheels 3 are fixedly installed on the threaded rods 2, chains 4 are engaged and connected to the two chain wheels 3, a driven bevel gear 5 is fixedly installed on one threaded rod 2, a driving motor 6 is fixedly installed in the installation groove, the type of the driving motor 6 is 50ZYT78, a driving bevel gear 7 is fixedly installed on an output shaft of the driving motor 6, the driving bevel gear 7 is engaged and connected with the driven bevel gear 5, a support plate 8 is connected to the threaded rod 2 through threads, two limit posts 9 are slidably connected to the interior of the support plate 8, the bottoms of the limit posts 9 are fixedly connected to the top of the base 1, and a mounting plate, the mounting plate 10 is internally provided with a mounting cavity, the mounting cavity is internally and rotatably connected with a rotating rod 11, the top of the rotating rod 11 is fixedly provided with a placing shell 12, the placing shell 12 is internally provided with a projector 13, the top of the placing shell 12 is in threaded connection with an adjusting screw 14, the bottom of the adjusting screw 14 is rotatably connected with a pressing plate 15, the rotating rod 11 is fixedly provided with a worm wheel 18, the mounting cavity is internally and rotatably connected with a worm 19, the worm 19 is meshed with the worm wheel 18, the mounting of a locking universal wheel 21 facilitates the movement of the device, and the device is more stably placed by the self-locking function of the locking universal wheel 21, so that the device is convenient to move and place, the maneuverability and the flexibility of the device are improved, the driving bevel gear 7 is driven to rotate by starting a driving motor 6, the driven bevel gear 5 is driven to rotate one of the threaded rods 2, thereby one of the sprockets 3 is rotated, make another sprocket 3 rotate through the transmission of chain 4, thereby make two threaded rods 2 rotate simultaneously, rotation and spacing post 9 through threaded rod 2 are spacing to backup pad 8 pivoted, make backup pad 8 can reciprocate, thereby the lift of device has been realized, the operation is simple, high durability and convenient use, it rotates to drive worm wheel 18 through rotating worm 19, drive bull stick 11 rotates, thereby the regulation to projection angle has been realized, and utilize worm wheel 18 and worm 19's auto-lock nature, can effectively avoid bull stick 11 to take place the condition of autobiography, the stability of device has been improved.

Wherein, one side fixed mounting of clamp plate 15 has slipmat 16, and slipmat 16 is the rubber material, and the installation through slipmat 16 has improved the frictional force between clamp plate 15 and the projecting apparatus 13, makes placing of projecting apparatus 13 more stable, utilizes the elasticity of rubber material, avoids the process of clamp plate 15 centre gripping to cause the wearing and tearing of projecting apparatus 13.

Wherein, the one end fixedly connected with handle 17 of adjusting screw 14, handle 17 is located the top of placing shell 12, makes adjusting screw 14 rotate through rotating handle 17, has made things convenient for operator's use.

An opening for the worm 19 to pass through is formed in the mounting plate 10, a rotating hand wheel 20 is fixedly connected to one end, through which the mounting plate 10 passes through the opening, of the mounting plate, and the worm 19 is rotated by rotating the rotating hand wheel 20, so that the mounting plate is convenient for an operator to use.

Wherein, the blind hole has been seted up to backup pad 8's inside, has seted up the internal thread on the inner wall of blind hole, and the threaded connection of threaded rod 2 with backup pad 8 has been guaranteed through seting up of blind hole to internal thread and threaded rod 2 looks adaptation.

Wherein, worm wheel 18 is stainless steel, and worm wheel 18's surface spraying has wear-resisting coating, and stainless steel matter hardness is high, has improved worm wheel 18's wearability through wear-resisting coating to the life of worm wheel 18 has been prolonged.

The working principle is as follows: in the utility model, the projector 13 is placed in the placing shell 12 before use, the adjusting screw 14 is rotated by the rotating handle 17, so that the adjusting screw 14 moves on the placing shell 12, the projector 13 is clamped by the pressing plate 15, the projector 13 is stably placed in the placing shell 12, the mounting plate 10 is pushed to be mounted through the locking universal wheel 21, so that the device can be moved conveniently, the device can be placed more stably through the self-locking function of the locking universal wheel 21, the device can be moved and placed conveniently, the mobility and flexibility of the device are improved, the driving bevel gear 7 is driven to rotate by starting the driving motor 6, the driven bevel gear 5 is driven to rotate, one of the threaded rods 2 is driven to rotate, one of the chain wheels 3 is driven to rotate, the other chain wheel 3 is driven to rotate through the transmission of the chain 4, so that the two threaded rods 2 rotate simultaneously, the rotation of the threaded rod 2 and the limit of the support plate 8 through the rotation of the threaded rod 2 and the limit column 9, make backup pad 8 can reciprocate to realized the lift of device, easy operation, convenient to use drives worm wheel 18 through rotating worm 19 and rotates, and drive bull stick 11 rotates, thereby realized the regulation to the projection angle, and utilized worm wheel 18 and worm 19's auto-lock nature, can effectively avoid bull stick 11 to take place the condition of autobiography, improved the stability of device.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A computer multimedia teaching projection device comprises a base (1) and is characterized in that locking universal wheels (21) are fixedly mounted at four corners of the bottom of the base (1), a mounting groove is formed in the base (1), two threaded rods (2) are rotatably connected in the mounting groove, chain wheels (3) are fixedly mounted on the threaded rods (2), chains (4) are connected to the two chain wheels (3) in a meshed manner, a driven bevel gear (5) is fixedly mounted on one threaded rod (2), a driving motor (6) is fixedly mounted in the mounting groove, a driving bevel gear (7) is fixedly mounted on an output shaft of the driving motor (6), the driving bevel gear (7) is connected with the driven bevel gear (5) in a meshed manner, a supporting plate (8) is connected to the threaded rod (2) in a threaded manner, and two limiting columns (9) are slidably connected to the inside of the supporting, the bottom of spacing post (9) and the top fixed connection of base (1), fixed mounting has mounting panel (10) on backup pad (8), the installation cavity has been seted up to the inside of mounting panel (10), the inside of installation cavity is rotated and is connected with bull stick (11), the top fixed mounting of bull stick (11) has place shell (12), place inside of shell (12) and placed projecting apparatus (13), the top threaded connection who places shell (12) has adjusting screw (14), the bottom of adjusting screw (14) is rotated and is connected with clamp plate (15), fixed mounting has worm wheel (18) on bull stick (11), the inside of installation cavity is rotated and is connected with worm (19), worm (19) and worm wheel (18) meshing are connected.

2. The computer multimedia teaching projection device according to claim 1, wherein a non-slip mat (16) is fixedly installed on one side of the pressing plate (15), and the non-slip mat (16) is made of rubber.

3. The computer multimedia teaching projection device according to claim 1, wherein a handle (17) is fixedly connected to one end of the adjusting screw (14), and the handle (17) is located at the top of the placing shell (12).

4. The computer multimedia teaching projection device according to claim 1, wherein the mounting plate (10) is provided with an opening for the worm (19) to pass through, and one end of the mounting plate (10) passing through the opening is fixedly connected with a rotating hand wheel (20).

5. The computer multimedia teaching projection device as claimed in claim 1, wherein the support plate (8) has a blind hole therein, and the blind hole has an inner wall provided with an internal thread adapted to the threaded rod (2).

6. The computer multimedia teaching projection device according to claim 1, wherein the worm wheel (18) is made of stainless steel, and the outer surface of the worm wheel (18) is coated with wear-resistant paint.