CN213123521U

CN213123521U - General automatic machine principle teaching device

Info

Publication number: CN213123521U
Application number: CN202021801380.6U
Authority: CN
Inventors: 徐伟
Original assignee: Chongqing Water Resources and Electric Engineering College
Current assignee: Chongqing Water Resources and Electric Engineering College
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-05-04
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a general teaching device of automatic mechanical principle, which comprises a base, wherein the base is provided with a support frame and a drive control box; the bottom end of the support frame is fixed on the base, a limit switch and an encoder are fixed at the tail end of a main shaft of the direct current motor, and a wire outlet end of the motor is connected with a wire outlet end of the driving controller; the mechanism model is fixed on the linear slide rail assembly, and a shaft on the mechanism panel is driven by the direct current motor to rotate the mechanism model; the direct current motor outlet end is connected to a terminal strip inside the drive control box through an opening of the drive control box, the terminal strip is connected with the outlet end of the human-computer interaction module, the middle end of the terminal strip is connected with the outlet end of the drive control module, and a communication port of the human-computer interaction module is connected with a communication port of the drive control module. The utility model discloses a device is light, and mechanism model nimble location reaches general teaching device purpose.

Description

General automatic machine principle teaching device

Technical Field

The utility model belongs to the technical field of the teaching device, especially, relate to an automatic machine principle teaching device.

Background

The mechanism teaching aid is an indispensable part in mechanical principle teaching activities, and can vividly and vividly show the mechanism principle. However, the prior mechanism model show case is single, has overlarge volume and needs to be fixed in a laboratory. The teacher still needs to go to the laboratory to explain when giving lessons, and the time of wasting causes the teaching to be interrupted, and teaching effect is poor. During a plurality of theory of mechanics teaching, will need a plurality of teaching models, neither make things convenient for school's equipment management, the teacher classroom teaching of also being convenient for, the urgent general theory of mechanics teaching device who waits to design a neotype mechanism model integrated level height makes the teaching more convenient and lively, and school's equipment management is more succinct teaching equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a general automatic mechanical principle teaching device, the device can change the mechanism model and make up the show wantonly, carries out the show of a plurality of mechanical principles, can cover most mechanism models of mechanical principles, constitutes general mechanical principle teaching device, reaches the teaching purpose.

The technical scheme of the utility model as follows:

a general teaching device for the principle of automatic machinery comprises a base, a support frame, a driving control box and a mechanism panel, wherein two adjacent side surfaces of the support frame are provided with sliding grooves; the outer side wall of the mechanism panel is fixedly provided with a linear guide rail assembly, and the linear guide rail assembly on each side of the mechanism panel is provided with at least one of the following mechanism models: the mechanism comprises a flat-bottom cam mechanism, an equal-width cam mechanism, a gear rack mechanism, a cam ratchet wheel and pawl mechanism and a slider mechanism, wherein a main shaft is arranged on each mechanism model on each side of a mechanism panel, the main shaft penetrates through the mechanism panel and can freely rotate in the mechanism panel, a direct current motor is arranged on the inner side wall of each mechanism panel, a non-circular through hole is formed in the tail end of the main shaft, and a motor output shaft is inserted into the through hole to realize the transmission connection of the main shaft and the motor output shaft;

preferably, the wire outlet end of the direct current motor is connected to a terminal strip inside the drive control box through an opening of the drive control box to realize conduction connection, the terminal strip is connected with the wire outlet end of the human-computer interaction module through a wire, the middle end of the terminal strip is connected with the wire outlet end of the drive control module through a wire, and the communication port of the human-computer interaction module is in communication connection with the communication port of the drive control module.

Furthermore, the curved profile of the cam of the flat-bottom cam mechanism and the flat-bottom driven part form linear reciprocating motion connection, and a central circular hole of the cam is in rotary connection with the main shaft through a flat key; the cam central circular hole of the cam mechanism with the same width is rotationally connected with the main shaft through a flat key, the slider follower of the cam mechanism with the same width comprises a rectangular frame connected between two guide rods, the cam is rotationally arranged in the rectangular frame, and two opposite side surfaces of the cam are simultaneously contacted with two opposite inner side walls of the rectangular frame when the cam rotates;

the gear of the gear rack mechanism is in meshed transmission connection with the rack so as to realize the linear reciprocating motion of the rack, and the center of the gear is in rotary connection with the main shaft through a flat key;

the centers of the ratchet wheels of the cam ratchet wheel and pawl mechanism are in rotary connection with the main shaft through a flat key, and the ratchet wheels are in meshed connection with the pawls to realize unidirectional rotation of the ratchet wheels;

the center of a driving wheel of the sliding block mechanism is rotatably connected with the main shaft through a flat key, a hinged shaft is fixedly connected to the outer side wall of the driving wheel to be hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the outer side wall of a sliding block on the linear guide rail assembly to achieve linear reciprocating motion of the sliding block.

the center of a driving wheel of the sliding block mechanism is rotatably connected with the main shaft through a flat key, a hinged shaft is fixedly connected to the outer side wall of the driving wheel to be hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the outer side wall of a sliding block on the linear guide rail assembly to achieve linear reciprocating motion of the sliding block. Furthermore, the three-phase wire outlet end of the direct current motor is connected with the main contact end of the limit switch to realize the forward and reverse rotation of the motor, the tail end of a main shaft of the direct current motor is connected with the control end of the encoder to realize the positioning function, and the encoder enables the output end to be connected with the communication port of the drive control box to achieve the control function.

The utility model has the advantages that: when the mechanism is used, the four mechanism panels and the plurality of support frames with the sliding grooves form a box body, and the mechanism model panels can be conveniently plugged and pulled out; the location of usable direct current motor when rotating, mechanism's model installation can carry out nimble location on the linear slide rail set spare of backup pad, can cover the most mechanism's model of theory of mechanics, constitutes general theory of mechanics teaching device, reaches the teaching purpose, realizes a tractor serves several purposes, and common theory of mechanics model height is integrated, and it is all extremely convenient to use and manage.

Drawings

Fig. 1 is a schematic structural diagram of one embodiment of the present invention.

Fig. 2-5 are schematic views of mechanism models on four mechanism panels, respectively.

Element number description: the mechanism comprises a base 1, a support frame 2, a mechanism panel 3, a main shaft 4, a flat-bottom cam mechanism 5, an equal-width cam mechanism 6, a direct current motor 7, a gear rack mechanism 8, a driving control box 9, a linear guide rail 10, a sliding block mechanism 11, a man-machine interaction module 12, a terminal row 13, a driving control module 14, a cam ratchet wheel and pawl mechanism 15, an encoder 16, a limit switch 17, a cam 18, a flat-bottom driven piece 19, a rectangular frame 20, a gear 21, a rack 22, a ratchet wheel 23, a pawl 24, a connecting rod 25, a driving wheel 26, a sliding block 27, a hinge shaft 28 and a guide rod 29.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

The invention will be further explained with reference to the following figures and examples:

the embodiment provides a general automatic machine principle teaching device, as shown in fig. 1, it includes base 1, be fixed with the support frame 2 of two adjacent side areas spouts on the base 1, support frame 2 can set up to four and be located four corners of base 1 respectively to and a drive control box 9. This embodiment still includes four mechanism panels 3 that are located base 1 all around, and the corresponding spout of support frame 2 is inlayed at mechanism panel 3 both ends to make mechanism panel 3 can freely insert in the spout, take out to enclose into a rectangular cavity. The outer side wall of the mechanism panel 3 is fixed with a linear guide rail assembly 10, and the linear guide rail assembly 10 can be selectively arranged into a plurality according to actual needs. The linear guide rail assembly 10 of the mechanism panel 3 on each side is provided with at least one of the following mechanism models: the flat bottom cam mechanism 5, the constant width cam mechanism 6, the gear rack mechanism 8, the cam ratchet wheel and pawl mechanism 15 and the slide block mechanism 11, and the technical personnel in the field can design and install the models adaptively, and can adjust the installation layout according to the specific size of the model. Meanwhile, a main shaft 4 is installed on each side of the mechanism panel 3 of the embodiment (for simplified representation, all the main shafts 4 are not drawn in the attached drawings), the main shaft 4 penetrates through the mechanism panel 3 and can freely rotate in the mechanism panel 3, a direct current motor 7 is installed on the inner side wall of each mechanism panel 3 (for simplified representation, all the direct current motors 7 are not drawn in the attached drawings), a non-circular through hole is formed in the tail end position of the main shaft 4, for example, the through hole can be set to be a rectangular flat hole, and a motor output shaft is inserted into the through hole to realize transmission connection of the main shaft and the motor output shaft.

In addition, more specifically, the outlet end of the dc motor 7 is connected to the terminal strip 13 inside the drive control box 9 through the opening of the drive control box 9 to realize conduction connection, the terminal strip 13 is connected to the outlet end of the human-computer interaction module 12 through a wire, the middle end of the terminal strip 13 is connected to the outlet end of the drive control module 14 through a wire, the communication port of the human-computer interaction module 12 is in communication connection with the communication port of the drive control module 14, and as for the realization of human-computer interaction, a voice recognition system is arranged inside the human-computer interaction module 12 to perform recognition processing. The driving control module 14 is communicated with the man-machine interaction module 12, and a singlechip in the driving control module 14 is programmed to execute driving control actions. The above speech recognition and man-machine interaction techniques are prior art, and therefore, the present embodiment does not separately explain the principle in detail.

Referring to fig. 3, the curved profile of the cam 18 of the flat-bottomed cam mechanism 5 of the present embodiment forms a linear reciprocating motion connection with the flat-bottomed follower 19, and the central circular hole of the cam 18 is rotationally connected with the main shaft 4 through a flat key; the central circular hole of the cam 18 of the cam mechanism 6 with the same width is connected with the main shaft 4 in a rotating way through a flat key, the slider follower of the cam mechanism 6 with the same width comprises a rectangular frame 20 connected between two guide rods 29, the cam 18 is rotatably arranged in the rectangular frame 20, and two opposite side surfaces of the cam 18 are simultaneously contacted with two opposite inner side walls of the rectangular frame 20 when the cam 18 rotates.

Referring to fig. 2, the gear 21 of the rack and pinion mechanism 8 is in meshed transmission connection with the rack 22 to realize linear reciprocating motion of the rack, and the center of the gear 21 is in rotary connection with the spindle 4 through a flat key. As shown in fig. 4, the center of a ratchet wheel 23 of the cam ratchet wheel and pawl mechanism 15 is in rotary connection with the main shaft 4 through a flat key, and the ratchet wheel 23 is in meshed connection with a pawl 24 to realize unidirectional rotation of the ratchet wheel 23.

In detail, as shown in fig. 5, the center of the driving wheel 26 of the slider mechanism 11 is rotationally connected with the main shaft 4 through a flat key, a hinge shaft 28 is fixedly connected to the outer side wall of the driving wheel 26 to hinge with one end of a connecting rod 25, and the other end of the connecting rod 25 is connected with a hinge shaft 28 fixedly connected to the outer side wall of a slider 27 on the linear guide rail assembly 10 to realize the linear reciprocating motion of the slider.

Above each mechanism model, simple structure can show the core technology constitution of corresponding mechanical principle well, and mechanism model is rationally distributed, does benefit to the highly integrated design of all mechanism models on mechanism panel 3, is convenient for more that installation management and teaching use.

As a specific implementation manner, the three-phase wire outlet end of the direct current motor 7 is connected with the main contact end of the limit switch 17 to realize forward and reverse rotation of the motor, the end of the main shaft of the direct current motor 7 is connected with the control end of the encoder 16 to realize a positioning function, the encoder 16 enables the output end to be connected with the communication port of the drive control box 9, and the single chip microcomputer in the drive module 14 receives an electric signal converted by the encoder 16 to control the motion of the direct current motor, so that the positioning function is achieved, and the motion effect of the mechanism module is realized.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a general automatic machine principle teaching device which characterized in that: the mechanism comprises a base (1), wherein two support frames (2) with sliding grooves on adjacent side surfaces and a driving control box (9) are fixed on the base (1), the mechanism panels (3) are positioned on the periphery of the base (1), and two ends of each mechanism panel (3) are embedded in the corresponding sliding grooves of the support frames (2) so that the mechanism panels (3) can be freely inserted and taken out from the sliding grooves; the mechanism is characterized in that a linear guide rail assembly (10) is fixed on the outer side wall of the mechanism panel (3), and at least one of the following mechanism models is installed on the linear guide rail assembly (10) of each mechanism panel (3): flat cam mechanism (5), wait wide cam mechanism (6), rack and pinion mechanism (8), cam ratchet and pawl mechanism (15), slider mechanism (11), mechanism panel (3) each side mechanism model all installs a main shaft (4), main shaft (4) pass mechanism panel (3) and in mechanism panel (3) interior energy free rotation, a direct current motor (7) are all installed to every mechanism panel (3) inside wall, the end position of main shaft (4) is equipped with a non-circular shape through-hole, and motor output shaft inserts in this through-hole in order to realize main shaft (4) and motor output shaft's transmission and is connected.

2. The universal robot teaching device of claim 1 wherein: the outlet end of the direct current motor (7) is connected to a terminal strip (13) inside the drive control box (9) through an opening of the drive control box (9) to realize conduction connection, the terminal strip (13) is connected with the outlet end of a human-computer interaction module (12) through a lead, the middle end of the terminal strip (13) is connected with the outlet end of the drive control module (14) through a lead, and a communication port of the human-computer interaction module (12) is in communication connection with a communication port of the drive control module (14).

3. The universal robot teaching device of claim 1 wherein: the curve profile of a cam (18) of the flat-bottom cam mechanism (5) and a flat-bottom driven part (19) form linear reciprocating motion connection, and a central circular hole of the cam (18) is rotatably connected with the main shaft (4) through a flat key; the central circular hole of the cam (18) of the cam mechanism (6) with the same width is in rotary connection with the main shaft (4) through a flat key, a slider follower of the cam mechanism (6) with the same width comprises a rectangular frame (20) connected between two guide rods (29), the cam (18) is rotatably installed in the rectangular frame, and two opposite side faces of the cam (18) are always in contact with two opposite inner side walls of the rectangular frame when the cam (18) rotates.

4. The universal robot teaching device of claim 1 wherein: the gear (21) of the gear rack mechanism (8) is in meshed transmission connection with the rack (22) to realize linear reciprocating motion of the rack, and the center of the gear (21) is in rotary connection with the spindle (4) through a flat key.

5. The universal robot teaching device of claim 1 wherein: the center of a ratchet wheel (23) of the cam ratchet wheel and pawl mechanism (15) is in rotary connection with the main shaft (4) through a flat key, and the ratchet wheel (23) is in meshed connection with a pawl (24) to realize unidirectional rotation of the ratchet wheel (23).

6. The universal robot teaching device of claim 1 wherein: the center of a driving wheel (26) of the sliding block mechanism (11) is rotatably connected with the main shaft (4) through a flat key, a hinge shaft (28) is fixedly connected to the outer side wall of the driving wheel (26) to be hinged to one end of a connecting rod (25), and the other end of the connecting rod (25) is hinged to the outer side wall of a sliding block (27) on the linear guide rail assembly (10) to achieve linear reciprocating motion of the sliding block.

7. The universal robot teaching device of claim 1 wherein: the three-phase wire outlet end of the direct current motor (7) is connected with the main contact end of the limit switch (17) to realize forward and reverse rotation of the motor, the tail end of a main shaft of the direct current motor (7) is connected with the control end of the encoder (16) to realize a positioning effect, and the encoder (16) enables the output end to be connected with the communication port of the drive control box (9) to achieve a control effect.