CN213018395U

CN213018395U - Adjustable projection device for education and training

Info

Publication number: CN213018395U
Application number: CN202020740022.2U
Authority: CN
Inventors: 耿慧科; 王硕; 刘婷婷; 刘思逸
Original assignee: Shijiazhuang Institute Of Posts And Telecommunications Training Center Of China Post Group Co ltd
Current assignee: Shijiazhuang Institute Of Posts And Telecommunications Training Center Of China Post Group Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-04-20
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses an adjustable projection device for education and training, which comprises a projection device, a mounting seat and an angle adjusting device, wherein the lower end of the mounting seat is provided with the angle adjusting device for driving the projection device to adjust the angle; the first motor is used for driving the driving gear to rotate, the driving gear is meshed with the annular rack, the angle of the rotating disc in the horizontal direction can be adjusted in the rotating process of the driving gear, the second motor is used for driving the rotating shaft to rotate, and the rotating shaft drives the inverted U-shaped support to move, so that the inclination angle of the projection equipment in the vertical direction is adjusted; the utility model discloses simple structure, convenient operation is worth promoting.

Description

Adjustable projection device for education and training

Technical Field

The utility model belongs to the technical field of projection arrangement, concretely relates to projecting apparatus with adjustable education and training is used.

Background

A projector (also called a projector) is an optical amplifier developed on the basis of a slide projector. The basic structure of the projector is similar to that of a slide projector, but the light source and the condenser are improved, and the crescent moon mirror and the reflector are additionally arranged, so that the projector can be used in classrooms in the daytime without strict shading; the projected object is also changed from vertical reverse placement into horizontal square, the area can be as large as 250mm multiplied by 250mm, and the use is more convenient. A teaching aid capable of showing various projection films and performing projection demonstration or writing in daytime is also called a writing projector or a daytime slide projector. The projector is composed of a light source, an optical part, a cooling fan, a dimmer, a chassis, other additional devices and the like. When in use, various teaching slide films can be displayed, and the teaching slide films can also be directly written and drawn on the films to communicate with students. The object reflection projector and the micro projector are also one of the projectors, and the object to be taught is amplified and projected on a screen through an optical system by utilizing the optical principle, so that the aims of expanding communication, clearly demonstrating and enhancing understanding are fulfilled. The reflecting real object projector irradiates the light from the light source to the projected object directly, and the reflected light from the object is reflected by the reflector and imaged on the screen through the projecting lens. When the reflective projector works, light reaching the screen is reflected for the second time, so that the light energy loss is large, and the brightness of the image is low.

Because the existing projection device still has a place to be improved in aspects of fixing mode diversity, adjustable flexibility and the like, the adjustable projection device for educational training is needed to solve the problems and meet the requirements of people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable projection arrangement is used in education and training to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the adjustable projection device for education and training comprises projection equipment, a mounting seat and an angle adjusting device, wherein the lower end of the mounting seat is provided with the angle adjusting device for driving the projection equipment to adjust the angle, the angle adjusting device comprises a rotating disk, a first motor, a second motor, a rotating seat, a connecting shaft rod, an inverted U-shaped support and fixing rods, the fixing rods are fixedly mounted on the left side and the right side of the lower surface of the rotating disk respectively, rotating shafts are arranged on the fixing rods in a rotating mode, fixing frames of the inverted U-shaped support are arranged on the left rotating shaft and the right rotating shaft, and the projection equipment is fixedly mounted on the inverted U-shaped support; the left lower end of the rotating disc is fixedly provided with a second motor for driving the inverted U-shaped bracket to rotate; the upper end of the connecting shaft lever is fixedly arranged at the central position of the mounting seat, one side of the vertical middle position of the connecting shaft lever is fixedly provided with a mounting rod, and the first motor is fixedly arranged at the lower end of the mounting rod; the driving gear is fixedly arranged at the end part of an output shaft on the first motor; the annular rack is meshed with the first motor, and is fixedly arranged at the top of the rotating disc; a rotating seat is arranged in the middle of the top end of the rotating disc, and a sliding block is rotationally arranged in the rotating seat; the lower end of the connecting shaft rod is fixedly connected with the middle position of the top of the sliding block.

Preferably, the rotating disc is disc-shaped.

Preferably, the lower end of the mounting seat is fixedly provided with a connecting rod, and the upper end of the rotating disk is provided with a circular track in sliding fit with the bottom of the connecting rod.

Preferably, a ball is embedded between the inner wall of the rotating seat and the outer wall of the sliding block.

Preferably, the output shaft of the second motor is in self-checking transmission connection with the end of the rotating shaft through a gear, and the gear assembly consists of three gears which are meshed with each other pairwise.

Preferably, the first motor and the second motor both adopt positive and negative rotation servo motors.

Has the advantages that: compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize first motor drive driving gear to rotate, because mesh mutually between driving gear and the annular rack, the angle of rotary disk on the horizontal direction can be adjusted to driving gear pivoted in-process, utilizes second motor drive axis of rotation to rotate, and the pivoted axis of rotation drives the type of falling U leg motion, adjusts projection equipment at the ascending inclination of vertical side to change projection equipment's projection angle.

Drawings

Fig. 1 is the utility model provides an educational training is with adjustable projection arrangement's overall structure sketch map.

Fig. 2 is an enlarged view at a.

In the drawings: the projection device comprises a mounting seat 1, a rotating disk 2, a first motor 3, a second motor 4, a projection device 5, an inverted U-shaped support 6, a rotating shaft 7, a ball 8, a sliding block 9, a connecting rod 10, a rotating seat 11, a connecting shaft rod 12, a mounting rod 13, a driving gear 14, a ring gear 15, a gear assembly 16, a circular track 17 and a fixing rod 18.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Examples

Referring to the attached drawings, in the embodiment of the present invention, an adjustable projection apparatus for educational training includes a projection device 5, a mounting base 1 and an angle adjusting device, wherein the lower end of the mounting base 1 is provided with the angle adjusting device for driving the projection device 5 to adjust an angle, the angle adjusting device includes a rotary disk 2, a first motor 3, a second motor 4, a rotary base 11, a connecting shaft rod 12, an inverted U-shaped bracket 6 and a fixing rod 18, the left and right sides of the lower surface of the rotary disk 2 are respectively and fixedly provided with the fixing rod 18, the rotary frame on the fixing rod 18 is provided with a rotating shaft 7, the fixing frame of the inverted U-shaped bracket 6 is arranged on the left and right rotating shafts 7, and the projection device 5 is fixedly mounted on the inverted U-shaped bracket 6; the left lower end of the rotating disc 2 is fixedly provided with a second motor 4 for driving the inverted U-shaped bracket 6 to rotate; the upper end of the connecting shaft rod 12 is fixedly arranged at the central position of the mounting seat 1, one side of the vertical middle position of the connecting shaft rod 12 is fixedly provided with a mounting rod 13, and the first motor 3 is fixedly arranged at the lower end of the mounting rod 13; the driving gear 14 is fixedly arranged at the end part of an output shaft on the first motor 3; the annular rack 15 is meshed with the first motor 3, and the annular rack 15 is fixedly arranged at the top of the rotating disc 2; a rotating seat 11 is arranged at the middle position of the top end of the rotating disc 2, and a sliding block 9 is rotationally arranged in the rotating seat 11; the lower end of the connecting shaft rod 12 is fixedly connected with the middle position of the top of the sliding block 9.

Further, the rotating disk 2 is a disk shape.

Further, the lower end of the mounting seat 1 is fixedly provided with a connecting rod 10, the upper end of the rotating disk 2 is provided with a circular track 17 which is in sliding fit with the bottom of the connecting rod 10, and the stability of the rotating disk 2 in the rotating process is ensured.

Further, inlay between the inner wall of rotating seat 11 and the outer wall of sliding block 9 and have ball 8, reduce the friction between the inner wall of rotating seat 11 and the outer wall of sliding block 9, increase life.

Furthermore, the output shaft of the second motor 4 is connected with the end of the rotating shaft 7 through a gear self-checking transmission, and the gear assembly 16 is composed of three gears which are meshed with each other in pairs.

Further, the first motor 3 and the second motor 4 both adopt positive and negative rotation servo motors.

The use process comprises the following steps:

by adopting the first motor 3 and the second motor 4 of the positive and negative servo motors, when the projection device is used, the driving gear 14 is driven to rotate by the first motor 4, the driving gear 14 is meshed with the annular rack 15, the angle of the rotating disk 2 in the horizontal direction can be adjusted in the rotating process of the driving gear 14, the rotating shaft 7 is driven to rotate by the second motor 4, the rotating shaft 7 drives the inverted U-shaped support 6 to move, the inclination angle of the projection device 5 in the vertical direction is adjusted, and therefore the projection angle of the projection device 5 is changed; the application has the advantages of simple structure, strong practicability and simple operation and is worth popularizing.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. Projecting device with adjustable education and training is used, including projection equipment (5), mount pad (1), driving gear (14), annular rack (15) and angle adjusting device, its characterized in that: the lower end of the mounting seat (1) is provided with an angle adjusting device for driving a projection device (5) to adjust an angle, the angle adjusting device comprises a rotating disk (2), a first motor (3), a second motor (4), a rotating seat (11), a connecting shaft rod (12), an inverted U-shaped support (6) and fixing rods (18), the fixing rods (18) are fixedly mounted on the left side and the right side of the lower surface of the rotating disk (2) respectively, a rotating shaft (7) is arranged on the fixing rods (18) in a rotating mode, fixing frames of the inverted U-shaped support (6) are arranged on the left rotating shaft (7) and the right rotating shaft (7), and the projection device (5) is fixedly mounted on the inverted U-shaped support (6); a second motor (4) for driving the inverted U-shaped bracket (6) to rotate is fixedly mounted at the left lower end of the rotating disc (2); the upper end of the connecting shaft lever (12) is fixedly arranged at the central position of the mounting seat (1), a mounting rod (13) is fixedly arranged on one side of the vertical middle position of the connecting shaft lever (12), and the first motor (3) is fixedly arranged at the lower end of the mounting rod (13); the driving gear (14) is fixedly arranged at the end part of an output shaft on the first motor (3); the annular rack (15) is meshed with the first motor (3), and the annular rack (15) is fixedly arranged at the top of the rotating disc (2); a rotating seat (11) is arranged in the middle of the top end of the rotating disc (2), and a sliding block (9) is rotationally arranged in the rotating seat (11); the lower end of the connecting shaft lever (12) is fixedly connected with the middle position of the top of the sliding block (9).

2. The adjustable projection device for educational training according to claim 1, wherein: the rotating disc (2) is disc-shaped.

3. The adjustable projection device for educational training according to claim 1, wherein: the lower end of the mounting seat (1) is fixedly provided with a connecting rod (10), and the upper end of the rotating disk (2) is provided with a circular track (17) which is in sliding fit with the bottom of the connecting rod (10).

4. The adjustable projection device for educational training according to claim 1, wherein: a ball (8) is embedded between the inner wall of the rotating seat (11) and the outer wall of the sliding block (9).

5. The adjustable projection device for educational training according to claim 1, wherein: the output shaft of the second motor (4) is in self-checking transmission connection with the end of the rotating shaft (7) through gears, and three gears meshed with each other in pairs form a gear assembly (16).

6. The adjustable projection device for educational training according to claim 1, wherein: the first motor (3) and the second motor (4) both adopt positive and negative rotation servo motors.