Dynj-03 tractor semi-power shift gearbox experimental device

Release time：2024-05-23 01:00viewed：times

1. Overview
The equipment is based on the refurbished semi-power shift transmission (called power shift in China, currently represented by the Dongfanghong power shift series tractors in China, this time the Dongfanghong power shift LF804 series is used), with adjustable speed. The three-phase asynchronous motor is used as the power source to perform practical operations on the transmission such as gear display, neutral starting, forward gear and reverse gear operation. It truly demonstrates the structure and working process of the tractor's electronically controlled automatic transmission.

2. Functional features
1. Real and operational tractor semi-power shift transmission (called power shift in China, currently represented by Dongfanghong power shift series tractors in China, this time Dongfanghong power shift LF804 series is used), adjustable Driven by a high-speed three-phase asynchronous motor, it can perform practical operations such as gear display, neutral starting, forward gear operation, reverse gear operation, etc., fully demonstrating the composition and working process of the transmission.
2. The motor directly drives the transmission, and the motor and the transmission are directly fixed through the coupling.
3. The rated current value specified on the motor nameplate can be set through the frequency converter, and an electronic thermal overload relay can be used to prevent motor overload. In order to prevent mechanical equipment from starting/ The impact during stop can be accelerated/decelerated through the inverter setting.
4. The countertop is made of aluminum-plastic panels that are impact-resistant, pollution-resistant, fireproof and moisture-proof, and the surface is sprayed with primer using a special process; the panel is printed with a UV flatbed inkjet color circuit diagram that will never fade; you can visually compare the circuit diagram with the actual object to understand and analyze the working principle of the automatic transmission control system. 5. There are detection terminals installed on the table panel, which can directly detect the electrical signals of each sensor , actuator, and control unit pin
on the panel , such as resistance, voltage, current, frequency signal, etc. 6. Instruments and pressure gauges are installed on the table panel, which can display changes in parameters such as engine speed, vehicle speed, automatic transmission gear, m*n oil channel pressure, etc. in real time. 7. The tr*ning platform panel is equipped with indicator lights for each solenoid valve of the automatic transmission to display the working status of each solenoid valve in real time. 8. The tr*ning platform is equipped with safety protection devices such as motor protective cover and output shaft protective cover. 9. Mechanical assembly and fitter assembly virtual simulation software: This software is developed based on unity3d, with optional 6-level image quality, and is equipped with reducer and shaft system . Structural design and virtual disassembly and assembly, design and simulation of common mechanical mechanisms , mechanism resource library, typical mechanical mechanisms (virtual disassembly and assembly of gasoline engines), the software is a whole software and cannot be individual resources. A. Reducer design and virtual disassembly interface can choose worm gear bevel gear reducer, two-stage expanded cylindrical gear reducer, bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, and one-stage cylindrical gear reducer. Gear reducer. Worm bevel gear reducer: After entering the software, the assembly content is automatically played. Each step in the video has a text description . Secondary expandable cylindrical gear reducer: After entering the software, the content is played in the form of a video. The video content should include: Part name ( Scan the QR code to see the names of parts), disassembly and assembly demonstration (including disassembly and assembly), virtual disassembly (including overall, low-speed shaft, medium-speed shaft, high-speed shaft, box cover, box seat) conical cylindrical gear reducer, Coaxial cylindrical gear reducer, bevel gear reducer, first-level cylindrical gear reducer: click to enter and automatically jump to the edrawings interface. The models are all three-dimensional models . By clicking on the parts, the names of the parts are displayed, and the 360° view is av*lable Rotate, enlarge, reduce, translate, and at the same time, the entire reducer can be disassembled and assembled through the moving parts function. At the same time, you can select the home button to return to the original state of the reducer. The bevel gear reducer and the first-stage cylindrical gear reducer have added the function of inserting a cross section, and the cross section can be freely dragged to observe the internal structure of the reducer. B. Shaft structure design and virtual disassembly and assembly interface optional parts recognition, disassembly and assembly demonstration, and actual operation. 1. Parts recognition: three-dimensional model and part name including helical gear, non-hole end cover, coupling, coupling key, shaft, gear key, hole end cover, shaft sleeve, deep groove ball bearing, any All parts can be rotated 360° 2. Disassembly and assembly demonstration: There are 2 built-in cases. When you move the mouse to the position of a cert*n part (except the base and bearing seat), the part will automatically enlarge and the name of the part will be displayed. It is equipped with disassembly and Assembly button, the function is to automatically complete the disassembly and assembly of the shaft system structure by the software. All three-dimensional scenes can be rotated, enlarged, reduced and translated 360° in all directions. 3. Practical operation: The three-dimensional parts are neatly placed on the table. The students manually select the corresponding parts and move them to the shaft system structure. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to restart. Conduct virtual experiments. When you move the mouse to a cert*n part position (except the base and bearing seat), the part will automatically enlarge and the part name will be displayed. C. Common mechanical mechanism design and simulation, optional hinge four-bar mechanism design and analysis, I\II type crank rocker mechanism design and analysis, offset crank slider mechanism design and analysis, crank swing guide rod mechanism design and analysis, hinge Four-bar mechanism with integrated trajectory, eccentric linear-acting roller push rod cam , and centering linear-acting flat-bottomed push rod cam . 1. Each mechanism should be able to input corresponding parameters, and the software can automatically calculate the parameters, and can perform motion simulation and automatically draw curves. D. The mechanism resource library includes 11 types of planar link mechanisms, 5 types of cam mechanisms, 6 types of gear mechanisms, 8 types of transmission mechanisms, 11 types of tightening mechanisms, 6 types of gear tr*n mechanisms, and 8 types of other mechanisms (mechanical equipment simulation) E , Virtual disassembly and assembly of gasoline engines, optional crankcase assembly and disassembly demonstration, crankcase virtual assembly, valve tr*n assembly and disassembly demonstration, valve tr*n virtual assembly
1. Both the crankcase assembly and disassembly demonstration and the gas distribution system assembly and disassembly demonstration are equipped with disassembly buttons, assembly buttons, restart, and disassembly observation buttons. When the mouse is moved to a cert*n part position, the part will automatically enlarge and the part name will be displayed. , the function is to automatically complete the disassembly and assembly of the shaft system structure by the software. When using the decomposition observation button, the 3D model of the crankcase or gas distribution system automatically displays an exploded view, which can be rotated, enlarged, reduced, and translated 360°.
2. The 3D parts of the crankcase virtual assembly and the gas distribution system virtual assembly are neatly arranged When placed on the desktop, students manually select the corresponding parts and move them to the mechanism. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to re-perform the virtual experiment. When you move the mouse to cert*n part locations, the part names are automatically displayed.
3. Technical specifications
Dimensions: about 1600×900×1700mm (length×width×height)
Power supply: three-phase four-wire (or three-phase five-wire) 380V±10% 50Hz
input power supply; AC 220V/380V
working power supply; DC 24V
working temperature: -40℃～+50℃
Color: white
Steel pipe: 50*50*3mm
Mobile casters: 200*100mm
Panel cabinet: 1.5mm cold plate stamping, with a m*ntenance door on the back;
4. Configuration

serial number	Name	Specifications and models	unit	quantity
1	Test control panel	Equipped with various detection terminals and color circuit diagrams	set	1
2	instrument cluster		set	1
3	transmission control computer		tower	1
4	Diagnostic seat		indivual	1
5	Ignition Switch		indivual	1
6	pressure gauge	0-25kg/cm2	indivual	1
7	Automatic transmission assembly		set	1
8	Drive axle assembly		set	1
10	Transmission gear lever assembly		set	1
11	Transmission oil cooling device		set	1
12	Three-phase asynchronous motor	380V	tower	1
13	Frequency converter	380V	tower	1
14	brake mechanism device		set	1
15	Mobile stand (with self-locking casters)	1600×900×1700mm (length×width×height)	tower	1
16	Fault simulation and troubleshooting device		set	1

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