CN115116291A - Multi-degree-of-freedom simulation method for intelligent classroom teaching - Google Patents
Multi-degree-of-freedom simulation method for intelligent classroom teaching Download PDFInfo
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
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Abstract
The invention discloses a multi-degree-of-freedom simulation method for intelligent classroom teaching, which comprises the following steps of: the method comprises the following steps: the three guide mechanisms drive and adjust the inclination angle of the inclined strut assembly; step two: the movable plate is supported by the inclined strut assemblies with different inclination angles to be in different states; step three: the transmission simulation mechanism simulates the change in the range of freedom along with the inclination of the movable plate, namely the transmission simulation mechanism meets the requirements of the movement in the front-back direction, the up-down direction and the left-right direction and the rotation in the front-back direction, the up-down direction and the left-right direction; step four: different-angle transmission is simulated by manually operating a transmission simulation mechanism.
Description
Technical Field
The invention belongs to the field of relevant technologies, and particularly relates to a multi-degree-of-freedom simulation method for intelligent classroom teaching.
Background
At present, the equipment manufacturing industry is developing towards an intelligent advanced control technology, and has urgent market demands on talents and technologies, the advanced control technology relates to the comprehensive disciplinary application of intelligent control algorithms and simulation, motion control, real-time communication technology, intelligent sensing technology and robot technology, at present, most factories adopt automatic assembly of production lines for products, in order to cultivate the teaching and practical training effect, an intelligent practical training teaching platform needs to be established to comprehensively show the control demonstration of the factories, and most intelligent equipment in the factories is formed by multi-degree-of-freedom machinery.
The degrees of freedom are based on mechanical principles, the mechanism having the number of independent motion parameters (i.e. the number of independent generalized coordinates that must be given in order for the position of the mechanism to be determined) that must be given in order to determine the motion, which number is often denoted F. If the degree of freedom F > 0 of a component assembly, it can be a mechanism, i.e. it indicates that there is relative movement between the components; if F is 0, it will be a structure, i.e. has degenerated into a building block. The degree of freedom of the mechanism also comprises the degree of freedom of a plane mechanism and the degree of freedom of a space mechanism. A prime mover can provide only one independent parameter.
There are generally two types of degrees of freedom: the freedom of rotation and the freedom of movement, in the plane, only three degrees of freedom, one is surface rotation, the two are two movements of front and back and left and right, in the three-dimensional, there are six degrees of freedom, three are three movements of front and back, up and down and left and right and three-surface rotation of front and back, up and down and left and right, simply speaking, the movement along three coordinate axes and the rotation around three coordinate axes refer to the number of the components which construct independent motion parameters relative to the reference system as the freedom of the components, and the application of the degrees of freedom: the degree of freedom is used as an important concept in structural mechanics and is a basic parameter for describing a basic condition of a structure, in structural analysis, the degree of freedom is used as a main unknown number, and the design of multiple degrees of freedom is necessary for intelligent mechanical equipment, so that a multiple degrees of freedom simulation device is provided to assist students in practice to know multiple degrees of freedom equipment.
The existing simulation platform technology has the following problems: the degree of freedom simulation that present simulation platform demonstrates is comparatively single, only can realize a small amount of degree of freedom simulation demonstration, and the mode of simulation degree of freedom is comparatively rigid, is difficult to express the change of multi freedom directly perceived, and difficult simulation equipment is in addition in the different angle transmission of multi freedom internal variation process.
Disclosure of Invention
The invention aims to provide a multi-degree-of-freedom simulation method for intelligent classroom teaching, which aims to solve the problems that the degree-of-freedom simulation provided in the background technology is single and the different-angle transmission of equipment in the change process of the multi-degree-of-freedom is difficult to simulate.
A multi-degree-of-freedom simulation method for intelligent classroom teaching is characterized by comprising the following steps:
the method comprises the following steps: a teacher controls three guide mechanisms (2) of the multi-degree-of-freedom simulation device to drive and adjust the inclination angle of the inclined strut assembly (4);
step two: the movable plate (5) is supported by the inclined strut assemblies (4) with different inclination angles to be in different states;
step three: the transmission simulation mechanism (9) simulates the change in the range of freedom along with the inclination of the movable plate (5), namely the transmission simulation mechanism (9) can move in the front-back direction, the up-down direction and the left-right direction and rotate in the front-back direction, the up-down direction and the left-right direction;
step four: the transmission of different angles is simulated by manually operating a transmission simulation mechanism (9).
In the scheme, the top surface of a chassis (1) of the multi-degree-of-freedom simulation device is provided with three guide mechanisms (2) which are distributed annularly, and the three guide mechanisms (2) are connected with each other through a connecting piece (3); a movable plate (5) is arranged above the chassis (1), the movable plate (5) is in a regular hexagon structure, and an inclined strut assembly (4) is arranged at each vertex angle; each two inclined strut assemblies (4) are correspondingly connected with one guide mechanism (2), an installation seat (6) is fixed on the top surface of the movable plate (5), and two support plates (7) which are arranged in parallel are fixed on the top surface of the installation seat (6); a support (8) is fixed at the top of the supporting plate (7), and a transmission simulation mechanism (9) for simulating different-angle transmission is arranged on the support (8); the guide mechanism (2) drives and adjusts the inclination angle of the inclined strut assembly (4), so that the transmission simulation mechanism (9) simulates the change in the range of freedom along with the inclination of the movable plate (5).
In the present case, multi freedom analogue means still includes wisdom classroom analog system, and this wisdom classroom analog system includes:
the data server is used for managing the data content of the control multi-degree-of-freedom simulation device;
the cloud platform terminal consists of a cloud platform client, the cloud platform client comprises a teacher login end and a student login end, and a user inputs the teacher login end or the student login end through an account password to enter the cloud platform terminal of the intelligent classroom;
the teacher terminal is used for providing a teacher with a device for controlling the multi-degree-of-freedom simulation device and intelligent classroom teaching;
the student terminal is used for connecting the cloud platform terminal and receiving the teaching content of the teacher terminal;
and the transmission module is used for connecting the cloud platform terminal, the teacher terminal and the student terminal with the data server and realizing network interconnection of the cloud platform terminal, the teacher terminal and the student terminal.
In the scheme, the connecting piece (3) comprises a fixed sleeve cover (32), and the fixed sleeve cover (32) is fixedly sleeved on the outer side of the shell (21); connecting plates (31) are fixed on two sides of the fixed sleeve cover (32), and one end of each connecting plate (31) is fixed with the fixed sleeve cover (32) on the other shell (21).
In the scheme, the guide mechanism (2) comprises a shell (21), one end of the shell (21) is fixedly provided with an installation plate (24), the installation plate (24) is fixed with the chassis (1), and the other end of the shell (21) is fixedly provided with two motors (22); the top of the shell (21) is provided with two guide grooves (23) which are arranged in parallel, the inner sides of the guide grooves (23) are provided with screw rods (25), and the screw rods (25) are rotatably connected with the shell (21); one end of the screw rod (25) penetrates through the shell (21) and is fixed with the motor (22), a threaded sleeve (26) is connected in the guide groove (23) in a sliding mode, and the threaded sleeve (26) is in threaded connection with the screw rod (25).
In the scheme, the inclined strut assembly (4) comprises a supporting rod (41), the bottom end of the supporting rod (41) is rotatably connected with a first steering shaft (42), one end of the first steering shaft (42) is hinged with a first connecting shaft (43), and the first connecting shaft (43) is rotatably connected with a threaded sleeve (26); the top end of the supporting rod (41) is rotatably connected with a second steering shaft (45), one end of the second steering shaft (45) is hinged with a second connecting shaft (44), and the second connecting shaft (44) is rotatably connected with the movable plate (5);
the transmission simulation mechanism (9) comprises a first arc-shaped sheet (91), a second arc-shaped sheet (92) and a fixed frame (95), a first rotating rod (96) is fixed at the middle position of the first arc-shaped sheet (91), and the first rotating rod (96) is rotatably connected with the support (8); a rotary table (97) is coaxially fixed at the outer side end of the first rotary rod (96), a handle (98) is fixed at the edge of the rotary table (97), and first positioning shaft rods (93) are fixed on two opposite side surfaces of the fixed frame (95); the first positioning shaft lever (93) is rotatably connected with the first arc-shaped piece (91), the other two opposite side surfaces of the fixed frame (95) are fixedly provided with second positioning shaft levers (94), and the second positioning shaft levers (94) are rotatably connected with the second arc-shaped pieces (92).
Has the advantages that:
1. the motor on different guide mechanisms is matched with the positive and negative rotation to drive the threaded sleeve to horizontally move back and forth along the length direction of the guide groove, so that the movable plate presents different inclined postures under the support of the surrounding inclined strut assembly, and the transmission simulation mechanism simulates the change in a freedom range along with the inclination of the movable plate, namely the transmission simulation mechanism meets the movement in the front and back, up and down and left and right directions and the rotation in the front and back, up and down and left and right sides, the simulation freedom is more comprehensive and flexible, and the change of multiple degrees of freedom is intuitively expressed;
2. the invention simulates the transmission of different angles by manually operating the transmission simulation mechanism, in particular to a method that a rotating handle drives a first arc-shaped piece to rotate by taking the central axial direction of a first rotating rod as a rotating center, and a second arc-shaped piece can rotate by taking the central axial direction of a second rotating rod as the rotating center, thereby realizing the simulation of the transmission of different angles and meeting the transmission simulation in the change process in multiple degrees of freedom;
3. according to the invention, by building an intelligent classroom simulation system, teachers and students can interact and communicate in real time, and a learning state display platform is provided, so that the communication between the teachers and the students is enhanced, and the students can conveniently understand knowledge with multiple degrees of freedom.
Drawings
FIG. 1 is a schematic structural diagram of a multi-degree-of-freedom simulation apparatus employed in the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a left side view of the structure;
FIG. 4 is a schematic diagram of a right-view structure;
FIG. 5 is a schematic top view;
FIG. 6 is a schematic front view of the structure;
FIG. 7 is a schematic sectional view in elevation;
FIG. 8 is a schematic top view;
FIG. 9 is a diagram of an intelligent classroom simulation system;
in the figure: 1. a chassis; 2. a guide mechanism; 21. a housing; 22. a motor; 23. a guide groove; 24. mounting a plate; 25. a screw rod; 26. a threaded sleeve; 3. a connecting member; 31. a connecting plate; 32. fixing the sleeve cover; 4. a diagonal bracing assembly; 41. a support bar; 42. a first steering shaft; 43. a first connecting shaft; 44. a second connecting shaft; 45. a second steering shaft; 5. a movable plate; 6. a mounting seat; 7. a support plate; 8. a support; 9. a transmission simulation mechanism; 91. a first arcuate segment; 92. a second arc piece; 93. a first positioning shaft; 94. a second positioning shaft; 95. a fixing frame; 96. a first rotating lever; 97. a turntable; 98. a handle; 99. a second rotating rod; 910. a transmission disc.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 to 9, a multiple degree of freedom simulation method for intelligent classroom teaching includes the following steps:
the method comprises the following steps: the teacher controls the three guide mechanisms 2 of the multi-degree-of-freedom simulation device to drive and adjust the inclination angle of the inclined strut assembly 4. The method comprises the following specific steps: after login authorization, the teacher terminal calls operation data of the multi-degree-of-freedom simulation device in a certain posture from the data server, and controls driving directions and processes of the motors 22 on the three guide mechanisms 2; when the motor 22 works, the output shaft of the motor can drive the screw rod 25 to rotate, and through the thread relationship between the thread bush 26 and the screw rod 25, under the sliding limit of the guide groove 23 to the thread bush 26, the thread bush 26 can horizontally move along the length direction of the guide groove 23, so that the support rod 41 is driven by the thread bush 26 to perform the conversion of the inclination angle and the inclination direction;
referring to fig. 1-8, the top surface of the chassis 1 of the multi-degree-of-freedom simulator is provided with three annularly distributed guide mechanisms 2, and each guide mechanism 2 comprises a shell 21. One end of the shell 21 is fixed with a mounting plate 24, the mounting plate 24 is fixed with the chassis 1, and the other end of the shell 21 is fixedly provided with two motors 22. Two parallel guide grooves 23 are formed in the top of the shell 21, a screw rod 25 is arranged on the inner side of each guide groove 23, and the screw rod 25 is rotatably connected with the shell 21. One end of the screw rod 25 penetrates through the shell 21 and is fixed with the output end of the motor 22, a threaded sleeve 26 is connected in the guide groove 23 in a sliding mode, and the threaded sleeve 26 is in threaded connection with the screw rod 25. When the motor 22 works, the screw rod 25 can be driven to rotate through the output shaft of the motor, and the threaded sleeve 26 horizontally moves along the length direction of the guide groove 23 under the sliding limit of the guide groove 23 on the threaded sleeve 26 through the threaded relation between the threaded sleeve 26 and the screw rod 25.
The three guide mechanisms 2 are connected with each other through a connecting piece 3, the connecting piece 3 comprises a fixed sleeve cover 32, and as shown in fig. 1 and 2, the fixed sleeve cover 32 is fixedly sleeved on the outer side of the shell 21. Connecting plates 31 are fixed on two sides of the fixed sleeve cover 32, and one end of each connecting plate 31 is fixed with the fixed sleeve cover 32 on the other shell 21, so that a triangular connecting system is formed among the three guide mechanisms 2, and the stability of the structure is further improved.
Referring to fig. 1-8, a movable plate 5 is disposed above the chassis 1, the movable plate 5 is in a regular hexagon structure, each vertex angle is provided with a diagonal bracing assembly 4, each two diagonal bracing assemblies 4 are correspondingly connected with one guide mechanism 2, and each diagonal bracing assembly 4 comprises a support rod 41. The bottom end of the support rod 41 is rotatably connected with a first steering shaft 42, one end of the first steering shaft 42 is hinged with a first connecting shaft 43, and the first connecting shaft 43 is rotatably connected with the threaded sleeve 26. The top end of the supporting rod 41 is rotatably connected with a second steering shaft 45, one end of the second steering shaft 45 is hinged with a second connecting shaft 44, and the second connecting shaft 44 is rotatably connected with the movable plate 5. When the threaded sleeve 26 moves horizontally along the length direction of the guide groove 23, the support rod 41 is driven by the threaded sleeve 26 to perform the conversion of the inclination angle and the inclination direction.
In this example, a mounting seat 6 is fixed on the top surface of the movable plate 5, two parallel supporting plates 7 are fixed on the top surface of the mounting seat 6, a support 8 is fixed on the top of the supporting plates 7, and a transmission simulation mechanism 9 for simulating transmission of different angles is arranged on the support 8.
The transmission simulation mechanism 9 includes a first arc-shaped piece 91, a second arc-shaped piece 92 and a fixing frame 95, as shown in fig. 6, 7 and 8, a first rotating rod 96 is fixed at the middle position of the first arc-shaped piece 91, the first rotating rod 96 is rotatably connected with the support 8, a rotating disc 97 is coaxially fixed at the outer end of the first rotating rod 96, and a handle 98 is fixed at the edge of the rotating disc 97. Two opposite sides of the fixed frame 95 are fixed with first positioning shaft levers 93, the first positioning shaft levers 93 are rotatably connected with the first arc-shaped pieces 91, the other two opposite sides of the fixed frame 95 are fixed with second positioning shaft levers 94, the first positioning shaft levers 93 are perpendicular to the axial direction of the second positioning shaft levers 94, and the second positioning shaft levers 94 are rotatably connected with the second arc-shaped pieces 92. A second rotating rod 99 is fixed at the middle position of the second arc-shaped piece 92, the second rotating rod 99 is rotatably connected with the bracket 8, and a transmission disc 910 is coaxially fixed at the outer side end of the second rotating rod 99. The guide mechanism 2 drives and adjusts the inclination angle of the inclined strut assembly 4, so that the transmission simulation mechanism 9 simulates the change in the range of freedom along with the inclination of the movable plate 5, the rotation handle 98 drives the first arc-shaped piece 91 to rotate by taking the central axial direction of the first rotating rod 96 as the rotation center, and the second arc-shaped piece 92 can rotate by taking the central axial direction of the second rotating rod 99 as the rotation center, thereby realizing the simulation of different-angle transmission.
The multi-degree-of-freedom simulation method further comprises a smart classroom simulation system, wherein the smart classroom simulation system comprises a data server, a cloud platform terminal, a teacher terminal, a student terminal and a transmission module.
The data server is used for managing the data content of the manipulation multi-degree-of-freedom simulation device, and comprises system configuration and management, access and update management of manipulation data of the multi-degree-of-freedom simulation device, integrity and safety of the data are guaranteed, and the data server has the functions of querying and manipulating a database, wherein the functions comprise database retrieval and modification. And the system also has database maintenance functions, including data import/export management, database structure maintenance, data recovery function and performance monitoring. The database runs in parallel, and because more than one user accessing the database at the same time needs to support a parallel running mechanism to process simultaneous occurrence of a plurality of events, the database server can realize simultaneous operation of a plurality of terminals and meet the requirement of intelligent classroom teaching;
the cloud platform terminal is composed of cloud platform clients, and each cloud platform client comprises a teacher login end and a student login end. A user inputs a teacher login end or a student login end through an account password, and then enters a cloud platform terminal of a smart classroom and enters a classroom of smart teaching;
the teacher terminal is used for providing equipment for a teacher to control the multi-degree-of-freedom simulation device and intelligent classroom teaching, and the equipment can comprise a computer, an electronic blackboard, a projector, a microphone, a camera for classroom video recording or a smart phone, so that the teacher can conveniently develop the intelligent classroom teaching for the multi-degree-of-freedom simulation device;
the student terminal is used for being connected with the cloud platform terminal and receiving the teaching content of the teacher terminal, can be mobile equipment such as a learning machine, a smart phone, a tablet personal computer and a notebook computer under the same platform, and can be in butt joint with the cloud platform terminal to realize butt joint with a smart classroom;
the transmission module is used for connecting the cloud platform terminal, the teacher terminal and the student terminal with the data server and realizing network interconnection of the cloud platform terminal, the teacher terminal and the student terminal, and the information transmission mode of the transmission module can be local area network, wireless hotspot, WiFi coverage, 4G or 5G information connection, so that the transmission, downloading and uploading of information data are realized.
Step two: the movable plate 5 is supported by the inclined strut assemblies 4 with different inclination angles to be in different states, specifically, the motor 22 on the different guide mechanisms 2 is used for rotating forward and backward in a matched manner to drive the threaded sleeve 26 to horizontally move forward and backward along the length direction of the guide groove 23, so that the movable plate 5 is supported by the inclined strut assemblies 4 around to be in different inclination postures;
step three: the transmission simulation mechanism 9 simulates the change in the range of freedom along with the inclination of the movable plate 5, that is, the transmission simulation mechanism 9 satisfies the movement in the three directions of front and back, up and down, left and right, and the rotation in the three directions of front and back, up and down, left and right, specifically, the movable plate 5 presents different inclination postures under the support of the surrounding bracing components 4, and the change of the movable plate 5 in the range of freedom is simulated, that is, the transmission simulation mechanism 9 simulates the change in the range of freedom along with the inclination of the movable plate 5;
step four: the driving simulation mechanism 9 is manually operated to simulate the transmission of different angles, specifically, the first arc-shaped piece 91 is driven by the rotating handle 98 to rotate by taking the central axial direction of the first rotating rod 96 as a rotating center, and the second arc-shaped piece 92 can rotate by taking the central axial direction of the second rotating rod 99 as a rotating center, so that the simulation of the transmission of different angles is realized, the student terminal enters an intelligent classroom after login authorization, the content of explanation of the multi-degree-of-freedom simulation device at a teacher terminal can be obtained, the classroom content can be downloaded through a transmission module, and then the knowledge point of multiple degrees of freedom can be learned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A multi-degree-of-freedom simulation method for intelligent classroom teaching is characterized by comprising the following steps:
the method comprises the following steps: a teacher controls three guide mechanisms (2) of the multi-degree-of-freedom simulation device to drive and adjust the inclination angle of the inclined strut assembly (4);
step two: the movable plate (5) is supported by the inclined strut assemblies (4) with different inclination angles to be in different states;
step three: the transmission simulation mechanism (9) simulates the change in the range of freedom along with the inclination of the movable plate (5), namely the transmission simulation mechanism (9) can move in the front-back direction, the up-down direction and the left-right direction and rotate in the front-back direction, the up-down direction and the left-right direction;
step four: the transmission of different angles is simulated by manually operating a transmission simulation mechanism (9).
2. The intelligent classroom teaching multi-degree-of-freedom simulation method as defined in claim 1, wherein: the top surface of a chassis (1) of the multi-degree-of-freedom simulation device is provided with three guide mechanisms (2) which are distributed in an annular mode, and the three guide mechanisms (2) are connected with each other through connecting pieces (3); a movable plate (5) is arranged above the chassis (1), the movable plate (5) is in a regular hexagon structure, and an inclined strut assembly (4) is arranged at each vertex angle; each two inclined strut assemblies (4) are correspondingly connected with one guide mechanism (2), an installation seat (6) is fixed on the top surface of the movable plate (5), and two support plates (7) which are arranged in parallel are fixed on the top surface of the installation seat (6); a support (8) is fixed at the top of the supporting plate (7), and a transmission simulation mechanism (9) for simulating different-angle transmission is arranged on the support (8); the guide mechanism (2) drives and adjusts the inclination angle of the inclined strut assembly (4), so that the transmission simulation mechanism (9) simulates the change in a degree of freedom range along with the inclination of the movable plate (5).
3. The method of claim 2, wherein the multi-degree-of-freedom simulation apparatus further comprises a smart classroom simulation system, the smart classroom simulation system comprising:
the data server is used for managing the data content of the control multi-degree-of-freedom simulation device;
the cloud platform terminal consists of a cloud platform client, the cloud platform client comprises a teacher login end and a student login end, and a user inputs the teacher login end or the student login end through an account password to enter the cloud platform terminal of the intelligent classroom;
the teacher terminal is used for providing a teacher with a device for controlling the multi-degree-of-freedom simulation device and intelligent classroom teaching;
the student terminal is used for being connected with the cloud platform terminal and receiving the teaching content of the teacher terminal;
and the transmission module is used for connecting the cloud platform terminal, the teacher terminal and the student terminal with the data server and realizing network interconnection of the cloud platform terminal, the teacher terminal and the student terminal.
4. The intelligent classroom teaching multi-degree-of-freedom simulation method as recited in claim 3, wherein: the connecting piece (3) comprises a fixed sleeve cover (32), and the fixed sleeve cover (32) is fixedly sleeved on the outer side of the shell (21); connecting plates (31) are fixed on two sides of the fixed sleeve cover (32), and one end of each connecting plate (31) is fixed with the fixed sleeve cover (32) on the other shell (21).
5. The intelligent classroom teaching multi-degree-of-freedom simulation method as defined in claim 2, wherein: the guide mechanism (2) comprises a shell (21), one end of the shell (21) is fixedly provided with a mounting plate (24), the mounting plate (24) is fixed with the chassis (1), and the other end of the shell (21) is fixedly provided with two motors (22); the top of the shell (21) is provided with two guide grooves (23) which are arranged in parallel, the inner sides of the guide grooves (23) are provided with screw rods (25), and the screw rods (25) are rotatably connected with the shell (21); one end of the screw rod (25) penetrates through the shell (21) and is fixed with the motor (22), a threaded sleeve (26) is connected in the guide groove (23) in a sliding mode, and the threaded sleeve (26) is in threaded connection with the screw rod (25).
6. The intelligent classroom teaching multi-degree-of-freedom simulation method as defined in claim 2, wherein: the inclined strut assembly (4) comprises a supporting rod (41), the bottom end of the supporting rod (41) is rotatably connected with a first steering shaft (42), one end of the first steering shaft (42) is hinged with a first connecting shaft (43), and the first connecting shaft (43) is rotatably connected with a threaded sleeve (26); the top end of the supporting rod (41) is rotatably connected with a second steering shaft (45), one end of the second steering shaft (45) is hinged with a second connecting shaft (44), and the second connecting shaft (44) is rotatably connected with the movable plate (5);
the transmission simulation mechanism (9) comprises a first arc-shaped sheet (91), a second arc-shaped sheet (92) and a fixed frame (95), a first rotating rod (96) is fixed at the middle position of the first arc-shaped sheet (91), and the first rotating rod (96) is rotatably connected with the support (8); a rotary table (97) is coaxially fixed at the outer side end of the first rotary rod (96), a handle (98) is fixed at the edge of the rotary table (97), and first positioning shaft rods (93) are fixed on two opposite side surfaces of the fixed frame (95); the first positioning shaft lever (93) is rotatably connected with the first arc-shaped piece (91), the other two opposite side surfaces of the fixed frame (95) are fixedly provided with second positioning shaft levers (94), and the second positioning shaft levers (94) are rotatably connected with the second arc-shaped pieces (92).
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| Publication number | Priority date | Publication date | Assignee | Title |
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