Mechanical transmission demonstration device

Abstract

The utility model discloses a mechanical transmission demonstration device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a support, the top of the support is fixedly connected with a demonstration mechanism, the bottom of the bottom plate is provided with an empty groove, and the interior of the empty groove is rotatably connected with two groups of first rotating rods. The outer surfaces of the first rotating rods are fixedly connected with two sets of synchronous wheels, and the outer surface of one set of the first rotating rods is fixedly connected with a first gear. The device has the advantages that the device is placed on a table top, and the first motor is started to enable the connecting rod to rotate, so that the set of the first rotating rods rotating with the connecting rod rotate; therefore, the synchronous wheel rotates along with the synchronous wheel, the synchronous belt is driven to rotate, the device can move on a desktop, the first gear rotates along with the synchronous wheel, the second gear is driven to rotate, the chain wheel drives the chain to rotate, the worm rotates along with the worm wheel, various transmission structures can be displayed for students, comparison is facilitated, and the teaching quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a mechanical transmission demonstration device. Background Art

[0002] Mechanical transmission is widely used in mechanical engineering, mainly referring to the transmission of power and motion by mechanical means. At present, in the mechanical courses in colleges and universities, when the lecturers explain the basic courses of mechanical design or mechanical principles, it is difficult for students to deeply understand and absorb the mechanical structure explained by simply explaining from books. At the same time, students will think that the characteristics and motion principles of mechanical transmission mechanisms are relatively abstract and difficult to understand, resulting in a weak grasp of knowledge, and they do not know how to distinguish and apply them, so they cannot correctly grasp them in practical applications. In this regard, in order to further deepen students' understanding and knowledge of basic mechanical transmission mechanisms, lecturers will use a more intuitive method of teaching demonstration tools to help students better understand and absorb.

[0003] Most of the existing transmission mechanism demonstration teaching devices have low flexibility, are relatively simple, and have relatively single functions. They usually exist in the form of a single mechanical transmission mechanism, and cannot demonstrate different mechanical transmission mechanisms according to teaching needs. They have limitations and reduce the teaching effect. In order to solve the above technical problems, the prior art proposes a mechanical transmission mechanism demonstration teaching device, such as Chinese patent [application number CN202123156099.9], which discloses a mechanical transmission mechanism demonstration teaching device, including a base, a transmission mechanism and a drive device, wherein a first limit interface and a first power interface are provided on the base, and a second limit interface and a second power interface are provided on the transmission mechanism. The transmission mechanism can be detachably connected to the first limit interface through the second limit interface and fixed on the base; although the patent can replace a different transmission mechanism by removing the previously demonstrated transmission mechanism from the first limit interface and the first power interface when it is necessary to demonstrate the movement process of different transmission mechanisms according to teaching, so that the teaching device of the utility model can be applicable to demonstrating the movement of different transmission mechanisms, thereby improving the flexibility of the teaching device; however, the above patent has certain defects during use. For example, in the actual demonstration process, students cannot participate in the demonstration process, which can easily make students lose interest and inconvenience students to learn and memorize mechanical transmission structures. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a mechanical transmission demonstration device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mechanical transmission demonstration device comprises a base plate, the top of the base plate is fixedly connected to a bracket, the top of the bracket is fixedly connected to a demonstration mechanism, the bottom of the base plate is provided with an empty slot, two groups of first rotating rods are rotatably connected inside the empty slot, the outer surface of the first rotating rod is fixedly connected to two groups of synchronous wheels, one group of the outer surface of the first rotating rod is fixedly connected to a first gear, the demonstration mechanism comprises a top plate fixedly connected to the top of the bracket, the bottom of the top plate is provided with a placement slot, two groups of second rotating rods are rotatably connected inside the placement slot, one group of the second rotating rods is fixedly connected to the outer surface of the second gear, the first gear is meshed with the second gear, the synchronous wheels on the two groups of the first rotating rods are connected through a synchronous belt transmission, one side of the base plate is fixedly connected to a connecting frame, one side of the connecting frame is fixedly installed with a first motor, one end of one group of the first rotating rods extends out of the empty slot and is fixedly connected to a connecting rod, one side of the connecting rod is fixedly connected to a connecting mechanism, and the connecting rod is fixedly connected to the output shaft of the first motor through the connecting mechanism.

[0007] Preferably, the connecting mechanism includes a sleeve and a limit column, the outer surface of the connecting rod is provided with several groups of sliding grooves, the interior of the sleeve is fixedly connected with a slider adapted to the sliding groove, the slider is slidably connected to the interior of the sliding groove, the limit column is fixedly connected to the output shaft of the first motor, the outer surface of the sleeve is provided with a limit groove, the outer surface of the limit column is provided with a sliding groove, the interior of the sliding groove is slidably connected with a limit block adapted to the limit groove, the interior of the sliding groove is fixedly connected with a spring, one side of the spring is fixedly connected to the limit block, and the limit block is clamped in the interior of the limit groove.

[0008] Preferably, the outer surfaces of the two groups of the second rotating rods are fixedly connected with sprockets, and the two groups of the sprockets are connected by chain transmission.

[0009] Preferably, one side of the top plate is fixedly connected to a support plate, one side of the support plate is rotatably connected to a rotating shaft, the other end of the rotating shaft is fixedly connected to a worm gear, one side of one group of the second rotating rods is fixedly connected to a worm, and the worm is meshingly connected to the worm gear.

[0010] The beneficial effect of the utility model is that the mechanical transmission demonstration device provided by the utility model can be placed on a desktop when the device is needed. The connecting rod can be rotated by starting the first motor, thereby causing the first rotating rod group rotating with the connecting rod to rotate, so that the synchronous wheel rotates accordingly, driving the synchronous belt to rotate, and then the device can be moved on the desktop, the first gear also rotates accordingly, driving the second gear to rotate, so that the sprocket drives the chain to rotate, the worm also rotates accordingly, and then the worm wheel rotates, and a variety of transmission structures can be demonstrated to students for comparison, thereby improving the teaching quality, and the limit block can also be pressed to disengage it from the limit groove, and the sleeve is separated from the limit column, that is, the first motor cannot drive the connecting rod to rotate, and the students can push the device by themselves to make multiple groups of transmission structures operate, thereby improving the students' interest in learning and facilitating students' memory. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a basic structural schematic diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the demonstration mechanism structure of the utility model;

[0013] Figure 3 It is a top view of the bottom plate of the utility model;

[0014] Figure 4 This is a schematic diagram of the connection mechanism structure of the utility model;

[0015] Figure 5 This is a schematic diagram of the sleeve structure of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] like Figure 1 - Figure 5 As shown, a mechanical transmission demonstration device provided by the utility model comprises a bottom plate 1, a bracket 2 is fixedly connected to the top of the bottom plate 1, a demonstration mechanism 3 is fixedly connected to the top of the bracket 2, an empty slot 4 is provided at the bottom of the bottom plate 1, two groups of first rotating rods 5 are rotatably connected inside the empty slot 4, two groups of synchronous wheels 6 are fixedly connected to the outer surface of the first rotating rods 5, one group of the first rotating rods 5 is fixedly connected to the outer surface of the first gear 7, the demonstration mechanism 3 comprises a top plate 301 fixedly connected to the top of the bracket 2, a placement slot 302 is provided at the bottom of the top plate 301, two groups of second rotating rods 303 are rotatably connected inside the placement slot 302, one group of the second rotating rods 303 is fixedly connected to the outer surface of the second gear 304, the first gear 7 is meshed with the second gear 304, and the two groups of first rotating rods The synchronous wheel 6 on 5 is connected through the synchronous belt 8, a connecting frame 10 is fixedly connected to one side of the bottom plate 1, a first motor 11 is fixedly installed on one side of the connecting frame 10, one end of a group of first rotating rods 5 extends out of the empty slot 4 and is fixedly connected to a connecting rod 12, one side of the connecting rod 12 is fixedly connected to a connecting mechanism 9, and the connecting rod 12 is fixedly connected to the output shaft of the first motor 11 through the connecting mechanism 9; when the device needs to be used, the device is placed on the desktop, and the connecting rod 12 can be rotated by starting the first motor 11, so that the group of first rotating rods 5 rotating with the connecting rod 12 rotates, so that the synchronous wheel 6 rotates accordingly, driving the synchronous belt 8 to rotate, and then the device can be moved on the desktop, which improves a certain degree of viewing, improves students' learning interest, and facilitates students' memory.

[0019] The connecting mechanism 9 includes a sleeve 901 and a limiting column 902. The outer surface of the connecting rod 12 is provided with a plurality of groups of slide grooves 13. The interior of the sleeve 901 is fixedly connected with a slider 903 adapted to the slide groove 13. The slider 903 is slidably connected to the interior of the slide groove 13. The limiting column 902 is fixedly connected to the output shaft of the first motor 11. The outer surface of the sleeve 901 is provided with a limiting groove 904. The outer surface of the limiting column 902 is provided with a sliding groove 905. The interior of the sliding groove 905 is slidably connected with a limiting groove 904. 4 is adapted to the limit block 906, the interior of the sliding groove 905 is fixedly connected with a spring 907, one side of the spring 907 is fixedly connected to the limit block 906, and the limit block 906 is clamped in the interior of the limit groove 904; the limit block 906 can be pressed to disengage it from the limit groove 904, so that the sleeve 901 is separated from the limit column 902, that is, the first motor 11 cannot drive the connecting rod 12 to rotate, and the students can push the device by themselves to make the transmission structure run, thereby improving the students' interest in learning and facilitating their memory.

[0020] The outer surfaces of the two sets of second rotating rods 303 are fixedly connected with sprockets 305, and the two sets of sprockets 305 are connected through chains 306; when the second gear 304 rotates, it will drive the set of second rotating rods 303 connected to it to rotate, so that the sprockets 305 drive the chains 306 to rotate.

[0021] A support plate 307 is fixedly connected to one side of the top plate 301, a rotating shaft 308 is rotatably connected to one side of the support plate 307, a worm gear 309 is fixedly connected to the other end of the rotating shaft 308, a worm 310 is fixedly connected to one side of one set of second rotating rods 303, and the worm 310 is meshingly connected to the worm gear 309; when the second rotating rod 303 rotates, the worm 310 is also driven to rotate, thereby driving the worm gear 309 to rotate.

[0022] Working principle: when the device is needed, it is placed on the desktop. The connecting rod 12 can be rotated by starting the first motor 11, so that the first rotating rod 5 that rotates with the connecting rod 12 rotates, so that the synchronous wheel 6 rotates accordingly, driving the synchronous belt 8 to rotate, and then the device can be moved on the desktop, and the first gear 7 also rotates accordingly, driving the second gear 304 to rotate, so that the sprocket 305 drives the chain 306 to rotate, and the worm 310 also rotates accordingly, and then the worm wheel 309 rotates. A variety of transmission structures can be displayed to students for comparison, which improves the teaching quality. The limit block 906 can also be pressed to disengage it from the limit groove 904, and the sleeve 901 is separated from the limit column 902, that is, the first motor 11 cannot drive the connecting rod 12 to rotate. Students can push the device by themselves to make multiple groups of transmission structures operate, thereby increasing students' interest in learning and facilitating students' memory.

[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical transmission demonstration device, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a bracket (2), the top of the bracket (2) is fixedly connected to a demonstration mechanism (3), the bottom of the bottom plate (1) is provided with an empty slot (4), the inside of the empty slot (4) is rotatably connected to two groups of first rotating rods (5), the outer surfaces of the first rotating rods (5) are fixedly connected to two groups of synchronous wheels (6), one group of the first rotating rods (5) is fixedly connected to the outer surface of a first gear (7), the demonstration mechanism (3) comprises a top plate (301) fixedly connected to the top of the bracket (2), the bottom of the top plate (301) is provided with a placement slot (302), the inside of the placement slot (302) is rotatably connected to two groups of second rotating rods (303), wherein A second gear (304) is fixedly connected to the outer surface of a group of the second rotating rods (303); the first gear (7) is meshedly connected to the second gear (304); the synchronous wheels (6) on the two groups of the first rotating rods (5) are connected by a synchronous belt (8); a connecting frame (10) is fixedly connected to one side of the base plate (1); a first motor (11) is fixedly mounted on one side of the connecting frame (10); one end of a group of the first rotating rods (5) extends out of the empty slot (4) and is fixedly connected to a connecting rod (12); one side of the connecting rod (12) is fixedly connected to a connecting mechanism (9); and the connecting rod (12) is fixedly connected to an output shaft of the first motor (11) via the connecting mechanism (9).

2. A mechanical transmission demonstration device according to claim 1, characterized in that: The connecting mechanism (9) comprises a sleeve (901) and a limiting column (902); the outer surface of the connecting rod (12) is provided with a plurality of groups of sliding grooves (13); a slider (903) adapted to the sliding groove (13) is fixedly connected to the inside of the sleeve (901); the slider (903) is slidably connected to the inside of the sliding groove (13); the limiting column (902) is fixedly connected to the output shaft of the first motor (11); a limiting groove (904) is provided on the outer surface of the sleeve (901); a sliding groove (905) is provided on the outer surface of the limiting column (902); a limiting block (906) adapted to the limiting groove (904) is slidably connected to the inside of the sliding groove (905); a spring (907) is fixedly connected to the inside of the sliding groove (905); one side of the spring (907) is fixedly connected to the limiting block (906); the limiting block (906) is clamped to the inside of the limiting groove (904).

3. A mechanical transmission demonstration device according to claim 1, characterized in that: The outer surfaces of the two groups of the second rotating rods (303) are both fixedly connected with sprockets (305), and the two groups of the sprockets (305) are transmission-connected via chains (306).

4. A mechanical transmission demonstration device according to claim 1, characterized in that: One side of the top plate (301) is fixedly connected to a support plate (307), one side of the support plate (307) is rotatably connected to a rotating shaft (308), the other end of the rotating shaft (308) is fixedly connected to a worm gear (309), one side of one set of the second rotating rods (303) is fixedly connected to a worm gear (310), and the worm gear (310) is meshingly connected to the worm gear (309).

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