CN204178628U - Gear train demonstrator - Google Patents

Abstract

The utility model provides a transmission mechanism demonstrator, which comprises a bracket, a bottom plate, a center distance setting mechanism, a transmission mechanism and an image transmission mechanism. The sliding table is composed of a supporting plate above the ball screw sliding table. The transmission mechanism includes a driving shaft, a driving wheel installed on the driving shaft, a driven shaft and a driven wheel installed on the driven shaft. The ends are respectively fixed on the support plate through the base, and the driving shaft is fixed on the bracket through two bearing seats, including the motor installed on the bottom plate, the worm connected with the output shaft of the motor, the worm gear matched with the worm, and the worm gear installation At one end of the driving shaft, an image transmission mechanism is installed on the upper end of the bracket. The utility model enables students to directly and clearly see the teacher's demonstration of the structure and motion of the transmission mechanism in classrooms and laboratories, which is convenient for teaching and students' understanding.

Description

Transmission Mechanism Demonstrator

technical field

The utility model relates to a transmission mechanism demonstration instrument, in particular to a small portable transmission mechanism demonstration instrument for classroom and laboratory teaching. the

Background technique

Due to the traditional mechanical structure teaching, the operating characteristics of the teaching aids can only be clearly observed by close observation, but in the actual teaching, there are some students who cannot observe the operating process because they are too far away from the teaching aids. the

The production purpose of the transmission mechanism demonstrator is to enable students to directly and clearly see the teacher's demonstration of the structure and motion of the transmission mechanism in the classroom and laboratory. A variety of transmission mechanisms can be freely replaced on the transmission mechanism demonstration platform, including gear transmission, sprocket transmission, pulley transmission, etc.; it reflects multi-functionality, and can be expanded to achieve mechanical precision while completing the demonstration of the basic mechanical structure Measurement and other experiments. the

Contents of the invention

The purpose of the utility model is to provide a small portable transmission mechanism demonstration instrument which is convenient to be used in classroom and laboratory teaching. the

The purpose of this utility model is achieved in that the utility model comprises a bracket, a base plate, a center distance setting mechanism, a transmission mechanism and an image transmission mechanism. The screw slide table is composed of a support plate above the ball screw slide table. The transmission mechanism includes a driving shaft, a driving wheel installed on the driving shaft, a driven shaft and a driven wheel installed on the driven shaft, and the driven shaft The two ends of the drive shaft are fixedly installed on the support plate through the base, and the driving shaft is fixedly installed on the bracket through two bearing seats. It also includes the motor installed on the bottom plate, the worm connected with the output shaft of the motor, and the worm gear matched with the worm. The worm gear is installed at one end of the drive shaft, and the image transmission mechanism is installed at the upper end of the bracket. the

The utility model also includes such structural features:

1. The image transmission mechanism includes two mounting plates, two lead screws, two nuts, two stepping motors and a camera, the upper end of the bracket is provided with a No. 1 mounting plate, and the No. 1 stepping motor is installed on the side of the No. 1 mounting plate. At one end, the output shaft of the No. 1 stepping motor is connected to the No. 1 screw, the No. 1 nut is set on the No. 1 screw, the No. 2 mounting plate is fixedly installed on the No. 1 nut and perpendicular to the No. 1 mounting plate, and the No. 2 step The motor is fixedly installed on one end of the No. 2 mounting plate, the output shaft of the No. 2 stepping motor is connected with the No. 2 lead screw, the No. 2 nut is set on the No. 2 lead screw, and the camera is arranged on the No. 2 nut. the

2. The driving wheel is the driving gear, the driven wheel is the driven gear, and the driving gear meshes with the driven gear. the

3. The driving pulley is a driving pulley, the driven pulley is a driven pulley, and a conveyor belt is set between the driving pulley and the driven pulley. the

4. The driving wheel is a driving sprocket, the driven wheel is a driven sprocket, and a transmission chain is set between the driving sprocket and the driven sprocket. the

Compared with the prior art, the utility model has the beneficial effects that: the utility model can enable students to intuitively and clearly see the teacher's demonstration of the structure and motion of the transmission mechanism in the classroom and laboratory. Different from the previous teaching, the transmission mechanism demonstrator of the utility model can facilitate the teacher's teaching and help students understand the transmission mechanism. The camera uses a real-time projection camera to transmit the motion state of the transmission mechanism in real time, and the utility model is used in A variety of transmission mechanisms can be freely replaced on the transmission mechanism demonstration platform, including gear transmission, sprocket transmission, pulley transmission, etc. the

Description of drawings

Fig. 1 is the top view of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is a schematic diagram of the three-dimensional structure of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. the

Implementation case 1: In combination with Fig. 1, Fig. 2 and Fig. 3, the utility model includes a bracket 7, a base plate 16, a center distance setting mechanism, a transmission mechanism and an image transmission mechanism, the bottom plate 16 is installed under the bracket 7, and the center distance setting mechanism It consists of a ball screw slide 8 installed in the middle of the base plate 16, a support plate 15 is arranged above the ball screw slide 8, a transmission mechanism is installed on the support plate 15, an image transmission mechanism is installed on the upper end of the bracket 7, the base plate 16 and The support plate 15 can be selected as an acrylic plate, and the support 7 is a square support, mainly composed of profiles, and a connecting piece 11 is arranged between two profiles, which can improve the stability of the support. the

The transmission mechanism includes a driving shaft 1, a driving wheel 4 mounted on the driving shaft 1, a driven shaft 2 and a driven wheel 3 mounted on the driven shaft 2, and the two ends of the driven shaft 2 are respectively fixed on the On the support plate 15, the driving shaft 1 is fixedly installed on the support 7 through two bearing seats 23, and the driving wheel 4 is fixedly connected with the driving shaft 1, the driven wheel 3 and the driven shaft 2 respectively by keys, and the bearing seats 23 Bearing 5 is arranged between driving shaft 1, and in the transmission demonstration process of the present utility model, drive big wheel (driven wheel 3) motion for small wheel (driving wheel 4), and speed is slow, is convenient to watch demonstration process; The motor 6 on the base plate 16, the worm screw 19 connected with the output shaft of the motor 6, and the worm wheel 9 matched with the worm screw 19, the worm wheel 9 is fixedly installed on one end of the drive shaft 1 through a key, and the motor 6 and the worm screw 19 are connected through a coupling 20 Together, the transmission of motion is achieved. the

The image transmission mechanism includes two mounting plates, two leading screws, two nuts, two stepping motors and a camera 12, the upper end of the bracket 7 is provided with a No. 1 mounting plate 21, and the No. 1 stepping motor 13 is installed on the No. 1 mounting plate 21 One end of the No. 1 stepper motor 13 is connected to the No. 1 lead screw 10, the No. 1 nut 25 is set on the No. 1 lead screw 10, and the No. 2 mounting plate 22 is fixedly installed on the No. 1 nut 25 and connected with the No. 1 nut 25. Mounting plate 21 is vertical, No. 2 stepping motor 17 is fixedly installed on one end of No. 2 mounting plate 22, the output shaft of No. 2 stepping motor 17 is connected with No. 2 leading screw 18, and No. 2 nut 26 is sleeved on No. 2 leading screw 18 On the No. 2 nut 18, camera 12 is set, and camera 12 of the present utility model adopts a real-time projection camera. the

Implementation case 2: According to the transmission mechanism demonstrator described in implementation case 1, the driving wheel is the driving gear, and the driven wheel is the driven gear, and the driving gear and the driven gear mesh to demonstrate the transmission process of the gear transmission. the

Implementation Case 3: According to the transmission mechanism demonstrator described in Implementation Case 1, the driving pulley is the driving pulley, the driven pulley is the driven pulley, and a conveyor belt is set between the driving pulley and the driven pulley for demonstration of belt transmission. transmission process. the

Implementation case 4: According to the transmission mechanism demonstrator described in implementation case 1, the driving wheel is the driving sprocket, the driven wheel is the driven sprocket, and a transmission chain is set between the driving sprocket and the driven sprocket to demonstrate the transmission chain transmission process. the

The working process of the utility model is: the transmission mechanism given in the accompanying drawings is an example of gear transmission, the handle 14 is shaken to make the ball screw slide table move, and the relative position of the driven shaft 2 and the driving shaft 1 is realized, so that the driven wheel 3 and the driving wheel 4 reach the corresponding position that can be correctly meshed, lock the ball screw slide table to achieve a fixed center distance, then start the motor 6, drive the worm 19 to move through the coupling 20, and the worm 9 and worm 19 cooperate to form a reduction transmission The mechanism realizes the rotation of the driving shaft 1, and the driving wheel 4 drives the driven wheel 3 to move at a slow speed; and under the control of the No. 1 stepping motor 13 and the No. 2 stepping motor 17, the four directions of the camera 12 can be realized: up, down, front, back, left, and right Movement, so as to find the best shooting position, and finally transmit the movement process of the transmission mechanism to the projector through the data line, which is convenient for students to watch and learn. It can demonstrate parallel axis transmission mechanisms such as gear transmission, chain transmission and belt transmission. the

Claims (5)

1. A transmission mechanism demonstrator, characterized in that: it comprises a support, a base plate, a center distance setting mechanism, a transmission mechanism and an image transmission mechanism, the base plate is installed below the support, and the center distance setting mechanism consists of a ball installed in the middle of the base plate The screw slide table is composed of a support plate above the ball screw slide table. The transmission mechanism includes a driving shaft, a driving wheel installed on the driving shaft, a driven shaft and a driven wheel installed on the driven shaft, and the driven shaft The two ends of the drive shaft are fixedly installed on the support plate through the base, and the driving shaft is fixedly installed on the bracket through two bearing seats. It also includes the motor installed on the bottom plate, the worm connected with the output shaft of the motor, and the worm gear matched with the worm. The worm gear is installed at one end of the drive shaft, and the image transmission mechanism is installed at the upper end of the bracket. 2. The transmission mechanism demonstrator according to claim 1, characterized in that: the image transmission mechanism includes two mounting plates, two lead screws, two nuts, two stepping motors and a camera, and a bracket upper end is provided with a The No.1 mounting plate, the No.1 stepping motor is installed at one end of the No.1 mounting plate, the output shaft of the No.1 stepping motor is connected with the No.1 lead screw, the No.1 nut is set on the No.1 lead screw, and the No.2 mounting plate is fixedly installed On the No. 1 nut and perpendicular to the No. 1 mounting plate, the No. 2 stepping motor is fixedly installed on one end of the No. 2 mounting plate. The output shaft of the No. 2 stepping motor is connected with the No. 2 screw. The No. 2 nut is set on the No. 2 On the lead screw, a camera is arranged on the No. 2 nut. 3. The transmission mechanism demonstrator according to claim 1 or 2, characterized in that the driving wheel is a driving gear, the driven wheel is a driven gear, and the driving gear meshes with the driven gear. 4. The transmission mechanism demonstrator according to claim 1 or 2, characterized in that: the driving pulley is a driving pulley, the driven pulley is a driven pulley, and a conveyor belt is arranged between the driving pulley and the driven pulley. 5. The transmission mechanism demonstrator according to claim 1 or 2, wherein the driving wheel is a driving sprocket, the driven wheel is a driven sprocket, and a transmission chain is arranged between the driving sprocket and the driven sprocket.