All-dimensional exhibition device for spatial model demonstrations

A technology of three-dimensional models and display devices, applied in teaching models, educational tools, instruments, etc., can solve the problems of time occupation, difficult adjustment of camera height, and inconvenient teaching for teachers, and achieve convenient storage, convenient observation, and strong portability Effect

Inactive Publication Date: 2014-07-16

SOUTHWEST JIAOTONG UNIV

6 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, because the models used in teaching are generally small, it is often difficult for students in the back row of the classroom to observe the models clearly; at the same time, due to the large number of people in class, and the teacher has to explain the models in real time, the models cannot be passed on to every student Observe with your hands, because it takes up a lot of time and is not convenient for the teacher ...

Abstract

The invention discloses an all-dimensional exhibition device for spatial model demonstrations, and belongs to the technical field of the spatial model demonstrations. According to the all-dimensional exhibition device, all-dimensional shooting on a model on a carrying table can be effectively achieved, and visual angles of the model can be easily exhibited. The all-dimensional exhibition device comprises the carrying table, a scissor-fork type lifting support, a locking device and a camera shooting device, the carrying table is provided with a centering wheel, an axial locating device and a belt pulley motor, the centering wheel and the axial locating device are arranged on a table top plate, the belt pulley motor is arranged on the lower portion, and a transparent disk is driven by a motor to rotate. The camera shooting lifting support comprises a rotary supporting rod, a Chau straight-line motion mechanism, a camera clamp and a camera. By means of the model exhibition device, the model located on the carrying table can be shot in an all-dimensional mode, and switching between the visual angles can be simply achieved; an image can be transmitted to a common electronic device or projected to a large screen through the camera shooting device in real time to bring convenience to observation. The all-dimensional exhibition device is mainly used for all-dimensional demonstrations of the model.

Application Domain

Educational models

Technology Topic

Spatial modelVideo camera +8

Image

Examples

Experimental program(1)

Example Embodiment

[0020] Example

[0021] The present invention includes a base 7, a scissor-type lifting frame 17, an object table and a camera, and two parallel lower linear guide rails 8 are fixed to the base 7. The bottom fulcrum of the scissor lifter 17 is connected to the lower linear guide 8 through the lower sliding block 16 and the top fulcrum is connected to the upper linear guide 18 through the upper sliding block 19; two upper linear guides 18 are fixed in parallel to the stage of the stage Below the panel 21; both ends of the upper cross bar 10 of the self-locking mechanism are hinged with the first intermediate hinge point of the scissor lifter 17, and the lower cross bar 9 is hinged with the hinge seat provided on the base 7;

[0022] The self-locking mechanism is a spatial metamorphic mechanism, including an upper crossbar 10, a lower crossbar 9 and two connecting rod pairs, one of which is a common connecting rod pair 30, and its two ends are connected to the upper crossbar 10 and The lower crossbar 9 is hinged. The other self-locking connecting rod pair is composed of an upper joint 15, a lower joint 11 fixed to the upper crossbar 10 and the lower crossbar 9, and an upper rotating rod 13 and a lower rotating rod 12 hinged in the middle. The upper joint of the self-locking connecting rod pair 15 is fixed to the upper cross bar 10, the lower joint 11 is fixed to the lower cross bar 9, the free ends of the upper joint 15 and the lower joint 11 are both provided with blind holes, the upper rotating rod 13 and the lower rotating rod 12 are hinged in the middle, and both ends An axial boss for clearance fit with the blind hole is provided, and a gravity ball 14 is installed in the middle of the upper rotating rod 13. The two ends of the ordinary connecting rod pair 30 are hinged to the upper cross bar 10 and the lower cross bar 9 respectively.

[0023] The scissor lift brackets 17 are in two groups, and each lift bracket 17 is formed by a plurality of connecting rods hinged in sequence.

[0024] The motor 20 of the stage is fixed on the bottom surface of the table top 21, and the motor shaft 24 is connected to the pulley 23. The belt 22 is matched with the belt groove around the transparent disc 28 through the pulley 23; the table top 21 is provided with two centering The wheel 25 has its rim inserted between the belt grooves of the transparent disc 28; there are four axial positioning clamps 26, which are evenly distributed along the circumferential direction of the transparent disc 28, and are fixed on the table top 21; the upper end of the clamp 26 A bull's eye universal wheel 27 is provided under the straight arm, and another bull's eye universal wheel 29 opposite to it is fixed to the table top. The two bull's eye universal wheels are coaxial and are respectively connected to the top and bottom surfaces of the transparent disc 28 Tangent, sandwiching the transparent disc 28 in the middle.

[0025] The support tube 6 is vertically inserted in the fixed position of the base 7, the camera rotating motor 4 is fixed on the top of the support tube 6, the motor shaft 5 faces the stage and the center of the motor shaft 5 is at the same height as the stage; the camera lifting mechanism is supported by rotation The rod 3 is connected with the motor shaft 5 of the camera rotating motor 4;

[0026] The camera lifting mechanism includes two sets of Chua’s linear motion mechanism 2 at one end fixed on the upper part of the rotating support rod 3, and the other end is hinged with a camera clamp 1; the camera clamp 1 is fixed with a camera, the center line of the camera's camera and a transparent circle The axial center lines of the disc 28 coincide; the camera is a camera with Bluetooth function; the leather wheel motor 20 and the camera rotating motor 4 are both connected to a motor drive controller.

[0027] The working process and principle of the present invention are: when a model needs to be photographed, the loading device is adjusted first: the loading platform is lifted up, and when the loading platform is raised, the scissor lift 17 is driven to rise, The fork lifter 17 drives the self-locking mechanism to open; when the stage reaches a predetermined height, the self-locking link pair of the self-locking mechanism and the ordinary link pair 30 reach the dead center position, and the upper part of the self-locking link pair The rotating rod 13 rotates along its own axis under the action of the gravity ball 14 until the gravity ball 14 reaches the lowest position, so that the self-locking link pair loses relative freedom of rotation. At this time, the vertical movement of the stage is locked by the self-locking mechanism. live.

[0028] After the stage is adjusted, the camera device is vertically inserted into the fixed position of the base 7 through the support tube 6; then the three-dimensional model to be observed is placed on the transparent disc 28 of the stage. At this time, according to the size of the model, by adjusting the Chua’s linear motion mechanism 2 in the camera device, the vertical distance between the camera and the transparent disc 28 is adjusted. The camera fixture set by the Chua’s linear motion mechanism 2 can ensure that the focus of the camera is always at this position. Located on the axial axis of the transparent disc 28.

[0029] After the above adjustment is completed, the three-dimensional model can be observed and photographed in any direction as required. By controlling the rotation of the pulley motor 20 and the camera rotating motor 4, the rotation of the three-dimensional model and the movement of the camera can be realized, and the two can cooperate to realize observation and shooting in any orientation.

[0030] The rotation of the camera rotating motor 4 drives the rotation of the rotation support rod 3, and the rotation support rod 3 drives the rotation of the camera lifting mechanism, thereby realizing the rotation of the camera.

[0031] The rotation of the pulley motor 20 can drive the pulley 23 to rotate, and the transparent disc 28 is rotated by the pulley, thereby driving the three-dimensional model on the transparent disc 28 to rotate. Since the transparent disc 28 is restricted by the centering wheel 25 and the axial fixed holder 26, the transparent disc 28 can rotate around the fixed shaft during the rotation process without radial and axial deviation, ensuring the shooting process Smooth rotation of the 3D model.

[0032] When the model is not rotating, the upper, lower, left, and right sides of the model can be continuously photographed through the rotation of the camera. When the camera rotates to the side position, the front, back, left, and right sides of the model can be continuously photographed through the rotation of the model at this time. Through the coordinated rotation of the model and the camera, all-round observation and shooting of the model can be realized.

[0033] Because the camera is equipped with Bluetooth function, when in a wireless network environment, the video image can be transmitted to the computer or other commonly used electronic devices under the same network coverage in real time through the wireless network, and then teaching can be more intuitive and continuous.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

easy to observe
Easy to store

All-dimensional exhibition device for spatial model demonstrations

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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