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Introduction
Hydraulic propulsion and control technologies are increasingly being used in various sectors of the national economy and defence, and hydraulic equipment is important in the equipment system. When hydraulic equipment fails, the impact is not only on the production of the equipment itself, but often on the entire production system, especially on the automated production line, which often results in the paralysis of the entire production line, resulting in significant economic losses. This requires rapid and accurate diagnosis and quick removal in the event of failure, with fewer pieces of clothing. The maintenance staff will be guided by systems and information, will be guided by a full understanding of the specific environment on the ground, will select the correct thinking, strategy and methodology for the analysis of the failure, will closely organize the process of the analysis of the failure, will avoid confusion and error, will make up for deficiencies through appropriate means, will overcome difficulties, will reduce blindness, will increase the rate of hits and will achieve rapid and accurate identification and removal of the faults, thus achieving satisfactory performance。
Target audience
A maintenance backbone with some practical experience of hydraulic system maintenance and repair
2. Repair engineers for hydraulic systems
3. Maintenance managers and equipment maintenance managers
Headmasters, heads of departments, heads of faculties, heads of faculties, professional leaders, directors of hands-on training centres and key teachers, heads and members of cooperative authorities of schools, etc。
Training content
(i) hydraulic systems and maintenance overviews
1. Rationale and technical characteristics of hydraulic systems
2. Extensive application of hydraulic systems in various fields
Historical and development trends in hydraulic technology applications
Basic elements of hydraulic repair work
5. Quality of hydraulic maintenance personnel
(ii) graphics of hydraulic components and animation presentations
1. Hydraulic pumps: gear pumps, blade pumps, pole pumps. Hydraulic pump variable techniques and applications. New hydraulic pump。
2. Hypothesis of hydraulic valves: one-way valves (liquid control one-way valves) diagrams, conversion valves diagrams, spill valves diagrams, pressure reduction valves diagrams, sequence valves diagrams, flow control valves diagrams, electron server valves diagrams, electron scale valves and digital valves diagrams, plug valves diagrams and superheavy valves diagrams。
3. Hydraulic tank diagrams: classification of hydraulic cylinders, illustration of double pistols, charting of single pistols, charting of pyramids, charting of extruded pylons, typical structure of hydraulic cylinders。
4. Hydraulic matatum: gygmatic matatum, leaf-style hydraulic matatum, pyramid hydraulic matatum. New hydraulic motor。
5. Hydraulic auxiliary diagrams: energy collector diagrams, cooler diagrams, seal diagrams, filter diagrams。
6. Smart hydraulic components。
(iii) hydraulic component failure diagnosis and removal
1. Hydraulic pump failure diagnosis and removal: gygmy pump failure diagnosis and removal, foliage pump failure diagnosis and removal, column pump failure diagnosis and removal (modification of variable pumps), typical example。
2. Hydraulic valve failure diagnosis and removal: one-way valve (liquid control one-way valve) failure diagnosis and removal, swap valve failure diagnosis and removal, spill valve failure diagnosis and removal, reduction valve failure diagnosis and removal, sequence valve failure diagnosis and removal, flow control valve failure diagnosis and removal, server valve failure diagnosis and removal, scale valve failure diagnosis and removal, plug valve failure diagnosis and removal, overlapping valve failure diagnosis and removal, typical examples。
Hydraulic tank failure diagnosis and removal: installation and maintenance of hydraulic cylinders, frequent failure analysis and removal of hydraulic cylinders, typical example。
4. Hydraulic motor failure diagnosis and removal: installation and maintenance of hydraulic motors, hydraulic motor failure diagnosis and removal, typical example。
5. Hydraulic supplements use maintenance and fault diagnostic techniques: use and maintenance of energy receptacles, use and maintenance of filters, use and maintenance of coolers, use and maintenance of seals, typical examples。
(iv) hydraulic circuit failure diagnosis and removal
1. Stress loop failure diagnosis and removal
2. Directional circuit failure diagnosis and removal
3. Speed-back road failure diagnosis and elimination
Typical examples
(v) common malfunctions and removal and improvement of hydraulic devices
1. Issues of uncontrollable pressure and its removal: problems of uncontrollable pressure (unstable, non-pressure, low pressure, inability to remove pressure, pressure shock, etc.), measures to eliminate defects in pressure control。
2. Out of control and exclusion: out of control (slow, unstable, irreconcilable, crawling, etc.), measures to eliminate defects in speed control。
3. Out of control and exclusion: out of control (involvement, closure, error, incapacity, etc.) and out of order。
Out of control and exclusion: out of control (low precision, incoherence, self-discretion, etc.) and removal of position control defects。
Vibration, noise control。
Pollution control, technical performance and selection of hydraulic fluids。
7. Oil temperature control。
8. Leakage management。
9. Preventing air entry。
Typical example。
(vi) basic method of hydraulic failure screening
1. Sensory diagnosis
Parameter analysis
3. On-site experiments (adaptation, reconciliation, isolation, substitution)
Dismantling observations
Typical examples
(vii) hydraulic system failure diagnostic strategies and techniques
1. Characteristic information analysis
2. Establishing a fail-safe order
3. Presumption validation analysis
4. Zero. Step closer
5. Zero-sum, comprehensive assessment
6. Squirrel
Similar analogy
8. Typical examples
(viii) debugging of hydraulic equipment
1. Hydraulic equipment installation: installation of hydraulic tubes, installation of hydraulic hoses, installation of ultra-high pressure hydraulic pipes, installation of hydraulic pumps and valves。
2. Hydraulic element cleansing: commonly used washing methods, standards and processes for hydraulic element cleansing。
3. Hydraulic system acid wash: pipe cycle acid wash, trough acid wash。
4. Hydraulic system online rinsing and washing: the way to recycle rinsing, the selection of rinsing circuits, recycle rinsing major process processes and parameters, and cycle rinsing attention。
5. Hydraulic system debugging: preparation before hydraulic system debugging, main elements of hydraulic system debugging, hydraulic system step-drive debugging, hydraulic system airborne debugging, hydraulic system load debugging。
6. Safety requirements for hydraulic maintenance。
7. Typical examples。
(ix) questions and exchanges of practical questions by participants
Mr. Lu
Graduated from hunan university in 1966, engineer, hubei hydraulic plant, march 1968-april 1983. Technical work on the design and processing of hydraulic components, hydraulic systems and hydraulics. April 1983-may 2003 engineer, senior engineer, equipment power unit, sunyang textile machinery plant, ministry of textiles, for commissioning, overhauling, troubleshooting and importing hydraulic equipment for domestic production and imports. A number of subjects in the short-term refresher processing centre and hydraulics were visited in tokyo, japan, in 1985. Several dozen hydraulic systems were designed for the provinces of hubei, hunan, henan, guangdong, jiangsu, zhejiang and liaoning from 1978 to november 2006 to address a number of practical hydraulic technical difficulties for the production of large enterprises. Two patents in hydraulics and one provincial scientific and technological advancement award. Hydraulic maintenance has been ongoing for more than 40 years。
Academic achievements
1. Land-based dragons. Operational hydraulic mechanical failure removal and repair. Changsha: hunan science and technology press. 1995
2. Architectural dragons on land. Changsha hunan science and technology press 2002
3. Land observation dragons. Operational hydraulic mechanical failure removal and repair (second edition). Changsha: hunan science and technology press. 2006
4. A handbook on the use and maintenance of hydraulic systems prepared by the land dragon. Beijing: china chemical industry press. 2008
5. Compiled by the dragons on land. Manual for quick check of hydraulic maintenance. Beijing: china chemical industry press. 2009. 1
6. Editor-in-chief of the dragons on land. 600 cases of typical hydraulic component structure. Beijing: china chemical industry press. 2009. 6
7. Land seeker dragon, . Seeding hydraulic maintenance skills. Beijing: china chemical industry press. 2009. 10
8. A collection of practical techniques for hydraulic maintenance. Beijing: china chemical industry press. 20104
9. Questions and answers by luk yulong, jiangzu, editor-in-chief. Changsha: hunan science and technology press. 20011. 4
10. A handbook on the use, maintenance and design of hydraulic motors is prepared by the land observer dragon. Beijing: china chemical industry press. 20011. 4
11. Land dragon. Hydraulic maintenance 1000 questions. Beijing: china chemical industry press. 2012. 4
12. A manual for hydraulic maintenance workers was prepared by the land observer dragon. Beijing: china chemical industry press. 2012. 7
13. Land dragons. Landworks talk about hydraulic maintenance. Beijing: china chemical industry press. 2013. 3
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