YQ-B-type double-sided combination of intelligent integrated hydraulic and pneumatic Combo Bench YQ-B double-sided bench hydraulic and pneumatic PLC control is based on the user's needs, making full use of existing laboratory equipment, based on the design of a unique pneumatic - hydraulic test stand. This bench offers two different gas and liquid components, simultaneous separate experiments. Namely to reduce procurement costs and also saves space experiments, to ensure complete with two sets of experiments, based on the effective conservation of resources, has a high price! One. Hydraulic part is well-known measurement and analysis system, through flow, pressure, power, speed, time, temperature, displacement sensor - machine HMI computer screen - computer intelligent data acquisition, analysis, processing, - automatic production report ., after a series of automated curve movements, complete hydraulic test bench is the new intelligent Hydraulic bench professionally designed, is fully automated hydraulic experimental model of bench features 1. Common performance testing of hydraulic components: (hydraulic pumps, hydraulic motors, pressure relief valve, throttle, speed control valves, valves, etc.); 1) the characteristics of the pump test;. 2) relief valves, pressure reducing valve characteristic test (static test ); 3) characteristics of the test speed throttle valve; 2. Hydraulic basic circuit experiments :( dozen loop) a) relief valve regulator circuit 2) multi-stage regulator circuit 3) a. decompression circuit 4). two decompression circuit 5). The balance of the loop sequence valve 6). bidirectional pressure adjustment circuit 7). relief buffer circuit 8) check valve packing circuit 9). two Two-charge circuit 10 is unloaded). feed meter-speed circuit 11). Bypass Throttle Speed ??Control Circuit 12) The differential circuit 13 connected to the growth rate). throttle serial \ parallel circuit (14) for access speed) . pilot operated check valve and throttle speeds for access circuit 15). reversing valve circuit 16) sequence with the sequence valve control circuit 17). sequential pressure relay control circuit 18). limit switch control sequence actions Loop 19). cylinders series synchronization circuit 20). differential circuit 21). The time control solenoid valve commutation circuits. 22). The time of unloading relay control circuit 3. Students design their own protection, extended experimental hydraulic circuit assembly ; (Scalable hundreds of experiments) 4. Programmable Logic Controller (PLC) electrical control experiments, electro-hydraulic control experiment in the form of one; a), instruction PLC programming, ladder programming learning 2), PLC programming software Learn and use 3), PLC and computer communication, on-line debugging, monitoring, 4), PLC-controlled hydraulic drive for intelligent data acquisition system optimization 5. Experiment: available experimental data collection, analysis, processing, real-time display, the experimental curve Automatic generation composed bench by bench test bench, pump stations, used hydraulic components, electrical control unit, a data acquisition system composed of several parts. Table 1. Experimental test bench by iron (a molding process) body, aluminum operation panel composition. Panel with aluminum profile structure "T" in the form of grooves, you can easily and freely installed hydraulic components, lap experimental loop. Table dimensions: length × width × height = 1600mm × 680mm × 1800mm (after its packaging about 300kg) 2. pump station system rated working pressure: 6.3Mpa. (Maximum to 7Mpa) ⑴ motor - pump unit (1 station) variable vane pump - Motor 1 Taiwan: variable vane pump: one-way, nominal displacement 6.67mL / r, the volumetric efficiency of 90%; Motor: Three-phase AC voltage power 2HP 4P, speed 1450r / min; ⑵ tank: Nominal volume 45L; with liquid level, oil temperature gauge, oil, back to the oil filter, safety valves, etc. 3. Hydraulic components used in Bosch Rexroth hydraulic components based configuration detailed configuration list. Each is equipped with the oil hydraulic components floor transition, can be easily and freely hydraulic components placed on aluminum extrusions panel. 4. Electrical Control Unit Programmable Logic Controller (PLC): Germany's Siemens S7-200 series, I / O port 24 points, relay output form, supply voltage: AC 220V / 50Hz, the control voltage is DC24V, with manual, automatic, extended When the order and other control functions, and with a pressure gauge, meter, power meter, tachometer, and other measurement tools when tired. 5. Computer data acquisition system: PⅣ host, 19 'LCD monitor data acquisition card a pressure sensor transmitter 2; a flow sensor transmitter; a power sensor transmitter; temperature sensor transmitter 1; a displacement sensor transmitter; timer 2; see the configuration list. 6, with the loader emulation mechanism. 1) hydraulic and hydraulic control system to observe the principles of the various parts of the structure of the school and the analysis of the transmission. 2) hydraulic loading machinery presentation control experiments. ① loading operations, after loading the bucket cylinder extended arm thing, reverse bucket, boom lifting; ② unloading operations, bucket unloading material (arm retracted, turn the bucket), boom-down . ★ 7, the opening scene to provide hydraulic loaders agency operations simulation video. Second, the pneumatic part of the test bed is based on "hydraulic and pneumatic drive technology and training," "pneumatic control technology" and other common materials designed, set the programmable controllers and industrial pneumatic components, the implementation of the module as a whole, in addition to routine The basic pneumatic control loop experiments, but also can be simulated experiments pneumatic control technology, pneumatic technology curriculum design. PLC control mode, you can learn simple guide from PLC programming, ladder programming, deep into the PLC control applications, and computer communications, online debugging and other experimental features, can be the perfect combination of aerodynamic technology and electrical PLC control technology for electricians, Mechatronics and other professional training assessment. First, the main features: 1. The modular design experiments to build simple, convenient, all pneumatic components into independent modules, with easy installation of the floor, you can freely set up various experimental circuit board in a common aluminum profile experiment, parade piece simple and quick. 2. Fast and reliable connectors, saving time and easy disassembly. 3. The use of standard industrial pneumatic components, reliable and safe. 4. Low noise work station, providing a quiet experimental environment (noise <60). Second, the experimental project: ① loop test: 1. Single-acting cylinder commutation loop 2. double-acting cylinder commutation time pressure control loop circuit 3. 4. 5. secondary high and low pressure control loop switching circuit 6. Double-acting cylinder bi-Speed ??Loop (import regulation, export regulation) 7. Speed ??Exchanging buffer circuit 8. 9. 10. interlock circuit overload protection circuit 11. The position control loop 12. single reciprocating single reciprocating pressure control loop 13 Time-controlled single-loop 14. The single and double acting cylinder reciprocating continuous loop 15. reciprocating synchronous circuits using the throttle linkage 16. triplex count circuit 18. The delay circuit 17. The logic circuit 19. The valve of the application circuit ( or logic) 20. Hands operation circuit ②, programmable logic controller (PLC) electrical control experiment, the machine - electric - gas integrated control experiments: ⑴ PLC programming instructions, ladder programming ⑵ PLC programming software to learn to learn and use ⑶ PLC and computer, online debug control experiment ③ ⑷ PLC and pneumatic combining students to design, assemble and test each circuit three extensions, bench consists of: bench by the test bench, work station, pneumatic components, several parts of electrical control units. 1. Experimental Bench: Bench test subject by iron, aluminum operation panel or the like table dimensions: length × width × height = 1500mm × 650mm × 1700mm (packaged weight is about 300kg) 2. Work Pumping: pump input Voltage: AC 220V / 50Hz motor (double) Power: 250W Rated output pressure: 0.8Mpa pump volume: 20L Working noise: <60 db 3. pneumatic components: to JELPC pneumatic components based configuration in Annex. Pneumatic components equipped with aluminum transition plate (aluminum profiles + plastic), can be easily and freely the elements placed in the experimental panel (panel with aluminum profile structure "T" in the form of grooves) on. Loop lap with quick-change connectors, disconnect convenient. 4. Electrical Control Unit: programmable logic controller (PLC); Siemens S7-200 series, I / O port 24 points; relay output form. Power supply voltage: AC 220V / 50Hz