105 → www.festo.com/didactic 21 project tasks are matched to Equipment Sets TP 801, TP 802 and TP 803 with the corresponding exercise sheets and sample solutions. It thus provides a comprehensive course companion conveying the essential knowledge and basic principles of the hydraulic systems of mobile machines. The workbook contains: – Basic part – Assignment sections comprising project assignments and sample solutions for TP 801, TP 802, and TP 803 – Didactic notes – Working documents on data carrier/download – Worksheets for the student The basic part includes the following content: – Definition of terms and hydraulic basics – Closed hydraulic circuit – Load-sensing systems and variable displacement pumps – Current dividers – Mobile control blocks – 6/3-way proportional valves and valve configurations – Pressure compensators – Holding and lowering loads – Hydraulic pilot control (joystick) – Priority valves – Steering systems Workbook Arbeitsbuch TP 800 Mit CD-ROM Festo Didactic 574165 de Mobilhydraulik T P D(X2) A B LS C (X1) P C T B LS LS2 T A D LS1 P Exercise Section TP 801 Working Hydraulics 1 The learning section consisting of 9 project assignments is coordinated with the TP 801 equipment set. With each project assignment, the achievable learning objectives are presented first. Afterwards, the vehicle or the application to be discussed is presented. The requirements ensure a uniform start and the project assignment ensures a structured procedure. Energy usage rates of – a flow control – an open center load sensing controller – a proportional valve (supply) – a proportional valve (inlet and outlet) without and with open center load sensing controller – a proportional valve with pump circulation without and with loaded cylinder Holding and lowering loads – Holding loads (piloted non-return valves) – Lowering loads (counterbalancing) – Lowering loads (counterbalancing valve) Circuits with several consumers – Properties of the parallel connection – Properties of the tandem connection – Properties of the series connection Exercise Section TP 802 Hydrostatic Steering System The learning section consisting of 5 project assignments is coordinated with the TP 802 equipment set. In all project assignments, a circuit is built with a given circuit diagram while taking into account the instructions, and the measurements and calculations are also carried out. Comprehension questions are asked at the end of a project assignment. The readings, calculations and answers can then be compared with the sample solutions and discussed. Basics of hydrostatic steering – Design of a steering system with steady-speed cylinder – Design of a steering system with two differential cylinders – Displacement volume of the steering valve – Emergency steering characteristics of the steering valve – Load and overload in the steering system – Torque dependence of the steering valve – Priority of the steering system and secondary consumers Exercise Section TP 803 Working Hydraulics 2 The learning section consisting of 7 project assignments is coordinated with the TP 803 equipment set. The content builds on the learning content of TP 801 Working Hydraulics 1 and expands it to include the complex topic of systems with loadsensing controlled variable displacement pump. At the same time, the level of complexity always remains manageable due to the successive project tasks. Load-sensing systems – Structure and function of a control block – Control block with closed center load sensing – Control block with two consumers – Volume flow limitation on the control block – Pilot control of a control block – Load and flow rate dependencies – Function of an upstream pressure compensator – Pressure compensation with load sensing – Properties of upstream pressure compensators with more than one consumer – Properties of downstream pressure compensators with more than one consumer L. Unan, U. Schedel, C. Löffler Version 03/2021, 544 pages, color, in ring folder Campus license (→ Page 172) de 574165 en 574166 es 8042424 A T1 P2 P1 T2 T2 B P R T L E P R T L LS LS2 B T C D P T A LS1 P Hydraulics Training Packages > Equipment Sets > Mobile Hydraulics
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