CN104900127A - Hydraulic and air pressure fault diagnosis and maintenance experiment table - Google Patents
Hydraulic and air pressure fault diagnosis and maintenance experiment table Download PDFInfo
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- CN104900127A CN104900127A CN201410091273.1A CN201410091273A CN104900127A CN 104900127 A CN104900127 A CN 104900127A CN 201410091273 A CN201410091273 A CN 201410091273A CN 104900127 A CN104900127 A CN 104900127A
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Abstract
The invention provides a hydraulic and air pressure fault diagnosis and maintenance experiment table. A hydraulic system comprises a master control power supply module, an instrument module, a button module, a touch screen module, a relay module and a sensor testing module. The experiment table further comprises any one or a combination of two or more of following hydraulic components including an overflow valve, a decompression valve, a hydraulic pump, a throttling valve, a sequence valve, a two-position four-way valve, a two-position two-way valve, a three-position four-way reversing valve, an electromagnetic reversing valve and a one-way valve. The hydraulic components are all provided with quick-change connectors of the same type and are connected with a pipeline through the quick-change connectors. The experiment table is provided with a computer control test system, an integrated circuit board and an infrared receiving device. By means of the experiment table, designable, creative and comprehensive experiments of hydraulic transmission courses can be completed, besides, the experiment table is particularly suitable for hydraulic engineering tests and component performance tests, is a great support for teaching, scientific researches and detection, and is a beneficial assistant for scholars, experts and engineering technicians of the hydraulic discipline.
Description
Technical field
The present invention relates to a kind of experimental teaching unit, particularly relate to a kind of hydraulic and pneumatic fault diagnosis and maintenance experiment table.
Background technology
At present, along with constantly popularizing of hydraulic technique and being on the increase of hydraulic product, hydraulic system constantly expands in the range of application of every field, also proposes more higher requirements to the hydraulic technique talent.Because hydraulic system is complex structure and high mechanical, electrical, the liquid system ensemble of precision, hydraulic fault diagnosis difficulty is comparatively large, usually becomes enterprise and produces the major obstacles of carrying out smoothly.
When explaining hydraulic technique on classroom at present, mainly rely on the basic theories on textbook and naive model, dull in content single, student is indigestion not only, is more difficult to theory to combine reality, deals with problems in practical operation.Also there are some experiment tablees in currently available technology, hydraulic fault can be detected, strengthen results of learning, but these faults be manually set in advance and can not change, as long as student learnt once just can know guilty culprit, cannot reach the object of repetition learning exercise, results of learning are not good enough.In prior art, not yet there is a kind of experiment table, Students ' Learning hydraulic pressure and air pressure knowledge can be helped, generally can be applicable to again hydraulic engineering test and element function test.
Summary of the invention
For above-mentioned problems of the prior art, the present invention aims to provide a kind of hydraulic and pneumatic fault diagnosis and maintenance experiment table, student can be helped better to understand Hydraulic pressure and air pressure system principle, use Hydraulic pressure and air pressure system principle solving practical problems, designability, creativeness, the comprehensive experiment of hydrostatic transmission course can be completed again, hydraulic engineering test and element function test can be applicable to.
In order to realize above-mentioned technical purpose, the present invention adopts following technical scheme: a kind of hydraulic and pneumatic fault diagnosis and maintenance experiment table, and described hydraulic system comprises master control power module, instrumentation module, button module, touch screen module, relay module and sensor test module; It is characterized in that: described experiment table also comprises any one or any two or more combination of following Hydraulic Elements: surplus valve, reduction valve, hydraulic pump, throttling valve, sequence valve, two-position four-way valve, two position two-way valve, three position four-way directional control valve, solenoid directional control valve and retaining valve; Described each Hydraulic Elements install the hydraulic quick coupler of same model, are connected with pipeline by hydraulic quick coupler; Described experiment table is provided with computing machine and controls test macro, surface-mounted integrated circuit and infrared receiving device.
Preferably, described hydraulic quick coupler is furnished with the retaining valve of band self-locking structure.
Preferably, polytetrafluoroethylsealed sealed circle is installed in described hydraulic quick coupler inside.
Preferably, described experiment table also can increase the components and parts being provided with same model hydraulic quick coupler.
Preferably, described sensor test module comprises pressure transducer, flow sensor, temperature sensor, speed probe and displacement transducer.
Preferably, described experiment table also comprises PLC, described PLC can with PC communication.
Preferably, described experiment table also comprises hydraulic power unit, the mode that described hydraulic power unit adopts variable vane pump and constant flow paddle pump to combine with electrical equipment control.
Preferably, in described pipeline, plural oil filter is set.
Preferably, the computing machine control test macro of described experiment table comprises computing machine, data collecting card, interface board, sensor and solenoid valve.
Technique effect of the present invention: a kind of hydraulic and pneumatic fault diagnosis provided by the invention and maintenance experiment table, fault is arranged by infrared remote control and infrared receiving device temporarily at random, there is change and uncertainty in guilty culprit, detachably replaceable, student can repeat, and improves learning efficiency.The present invention not only can complete designability, creativeness, the comprehensive experiment of hydrostatic transmission course, and be specially adapted to hydraulic engineering test and element function test, having very powerful support to teaching, scientific research, detection, is the competent assistant of the scholar in hydraulic pressure subject, expert, engineering technical personnel.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1, master control power module; 2, instrumentation module; 3, button module; 4, touch screen module; 5, relay module; 6, sensor test module.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to shown in Fig. 1, a kind of hydraulic and pneumatic fault diagnosis and maintenance experiment table, described hydraulic system comprises master control power module 1, instrumentation module 2, button module 3, touch screen module 4, relay module 5 and sensor test module 6.The function that this six large basic module provides full security appliance to control, provides the control of flow, pressure, motor, main circuit.Described experiment table also comprise following Hydraulic Elements any one or its combination: surplus valve, reduction valve, hydraulic pump, throttling valve, sequence valve, two-position four-way valve, two position two-way valve, three position four-way directional control valve, solenoid directional control valve and retaining valve.Each Hydraulic Elements install the hydraulic quick coupler of same model, are connected with pipeline by hydraulic quick coupler.Various Hydraulic Elements indifference in appearance on experiment table.Described experiment table is provided with computing machine and controls test macro, surface-mounted integrated circuit and infrared receiving device.By surface-mounted integrated circuit, infrared receiving device and Infrared remote controller, teacher can realize remote control and arrange fault at random, and guilty culprit exists change and uncertainty, and detachably replaceable, student can repeat, and improves learning efficiency.
The connected mode of each Hydraulic Elements adopts hydraulic quick coupler, and each joint is furnished with the retaining valve of band self-locking structure.Like this, even if experimentation center tap does not connect and comes off, do not have pressure oil ejection yet.Polytetrafluoroethylsealed sealed circle is installed in hydraulic quick coupler inside, better can ensure sealing effectiveness.
Experimental configuration scheme can be configured according to specific requirement, also can increase components and parts and other control modes with the function of Enhancement test platform to experimental facilities.Experiment table also can increase the components and parts being provided with same model hydraulic quick coupler, to the later stage the components and parts experiment table that increases newly can be compatible.
The various control technology such as experimental loop can use Mechanical course, traditional Control, advanced PLC controls automatically.Described experiment table also comprises PLC, described PLC can with PC communication, achieve electric automatization to control, can monitor and fault detect by online programming, PC and PLC can be used to carry out deep secondary development etc. to hydraulic control system.
Described experiment table also comprises hydraulic power unit, the mode that hydraulic power unit adopts variable vane pump and constant flow paddle pump to combine with electrical equipment control, can control actuating medium temperature.Plural oil filter is set in pipeline, according to the model of filter core and the difference of filtering accuracy, can accurately controls fluid precision.
Experiment table electrical control is made up of various template, can meet all kinds of control overflow, combinationally uses line between each functional module, and simply, safely, reliable, controlling functions is complete.Adopt touch screen operation to combine with industry is actual, human-computer interaction type is better, and circuit controls and dynamic simulation all can be completed by touch-screen.
Sensor test module 6 comprises pressure transducer, flow sensor, temperature sensor, speed probe and displacement transducer, can meet the needs of every experiment parameter test.
The computing machine of described experiment table controls test macro and comprises computing machine, data collecting card, interface board, sensor and solenoid valve.The objective interface of system software is strong, easy to operate, multiple functional, interactivity is good, except having actual measurement function, also have the function of virtual instruction, the data window that teacher can utilize interface to provide inputs different data, draw different analytic curves, thus accomplish the theoretical analysis of various configurations.Control test macro and realize laboratory parameters, as the automatic inspection of data of pressure, flow, rotating speed, displacement etc., automatically process, store, automatically generate the function such as laboratory report and printout.System can realize the automatic control of circuit electromagnetic valve, improves robotization and the intelligent level of experiment table operation.System can carry out the control of 6 two solenoid valves simultaneously.
The present invention can carry out Hydraulic Elements performance test experiment, the static properties as Hydraulic Elements performance test experiment, surplus valve dynamic performance experiment, reduction valve is tested, the dynamic performance experiment of reduction valve, drawdown pump performance test experiment, throttling speed control circuit performance test and decompression cylinder characteristic test.The present invention also can provide the demonstration of touch-screen hydraulic control loop configuration picture and Control release, hydrostatic transmission fundamental circuit experiment, programmable controller PLC electric control experiment, mechanical-electrical-hydraulic integration Control release, touch-screen operation control and programming experiment.
Embody rule of the present invention is as follows:
1, fault verification; The Hydraulic Elements such as surplus valve, reduction valve, sequence valve, two-position four-way valve, two position two-way valve are contained on experiment table by teacher in advance, are arranged wherein that certain severally exists fault by infrared remote control at random, and require that student detects guilty culprit.
2, fault diagnosis: first student is familiar with out of order hydraulic pressure that teacher arranges and the principle of work of baric systerm and connection, then motor is enabled, by the hydraulic pressure that classroom is grasped and baric systerm fault diagnosis knowledge, and according to situation failure judgement positions such as pressure gauge readings.
3, failture evacuation: after disable motor, oneself is judged that the Hydraulic Elements that may there is fault are changed by student, then restarts motor.If failure vanishes, then fault is successfully got rid of.If fault still exists, then judge the element that may there is fault before again gaining, repeat step 2 and step 3, until fault is successfully got rid of.
In embodiment recited above, if the Hydraulic Elements such as surplus valve, reduction valve, sequence valve, two-position four-way valve, two position two-way valve to be replaced with any one or several combinations in other Hydraulic Elements, just become a kind of new exemplary application.Therefore, the present invention can arrange multiple hydraulic system fault.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. hydraulic and pneumatic fault diagnosis and a maintenance experiment table, described hydraulic system comprises master control power module, instrumentation module, button module, touch screen module, relay module and sensor test module; It is characterized in that: described experiment table also comprises any one or any two or more combination of following Hydraulic Elements: surplus valve, reduction valve, hydraulic pump, throttling valve, sequence valve, two-position four-way valve, two position two-way valve, three position four-way directional control valve, solenoid directional control valve and retaining valve; Described each Hydraulic Elements install the hydraulic quick coupler of same model, are connected with pipeline by hydraulic quick coupler; Described experiment table is provided with computing machine and controls test macro, surface-mounted integrated circuit and infrared receiving device.
2. hydraulic and pneumatic fault diagnosis according to claim 1 and maintenance experiment table, is characterized in that: described hydraulic quick coupler is furnished with the retaining valve of band self-locking structure.
3. hydraulic and pneumatic fault diagnosis according to claim 2 and maintenance experiment table, is characterized in that: polytetrafluoroethylsealed sealed circle is installed in described hydraulic quick coupler inside.
4. the hydraulic and pneumatic fault diagnosis according to any one of claim 1-3 and maintenance experiment table, is characterized in that: described experiment table also can increase the components and parts being provided with same model hydraulic quick coupler.
5. hydraulic and pneumatic fault diagnosis according to claim 1 and maintenance experiment table, is characterized in that: described sensor test module comprises pressure transducer, flow sensor, temperature sensor, speed probe and displacement transducer.
6. hydraulic and pneumatic fault diagnosis according to claim 1 with maintenance experiment table, it is characterized in that: described experiment table also comprises PLC, described PLC can with PC communication.
7. touch screen type hydraulic and pneumatic test experience platform according to claim 1, is characterized in that: described experiment table also comprises hydraulic power unit, the mode that described hydraulic power unit adopts variable vane pump and constant flow paddle pump to combine with electrical equipment control.
8. hydraulic and pneumatic fault diagnosis according to claim 1 and maintenance experiment table, is characterized in that: arrange plural oil filter in described pipeline.
9. hydraulic and pneumatic fault diagnosis according to claim 1 and maintenance experiment table, is characterized in that: the computing machine of described experiment table controls test macro and comprises computing machine, data collecting card, interface board, sensor and solenoid valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410091273.1A CN104900127A (en) | 2014-03-07 | 2014-03-07 | Hydraulic and air pressure fault diagnosis and maintenance experiment table |
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| CN201410091273.1A CN104900127A (en) | 2014-03-07 | 2014-03-07 | Hydraulic and air pressure fault diagnosis and maintenance experiment table |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106442155A (en) * | 2016-10-20 | 2017-02-22 | 湖南众航科技有限公司 | Intelligent air pressure test experiment table |
| CN106762987A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军装甲兵技术学院 | A kind of hydraulic system of engineering vehicle combined training platform |
| CN107387495A (en) * | 2017-06-19 | 2017-11-24 | 镇江四联机电科技有限公司 | A kind of modularization hydraulic test testing stand |
| CN110889988A (en) * | 2019-10-30 | 2020-03-17 | 深圳风向标教育资源股份有限公司 | Real case of instructing of vehicle data acquisition and control |
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| CN203013083U (en) * | 2012-12-25 | 2013-06-19 | 淄博市技师学院 | Microprocessor-based infrared remote control machine tool circuit simulated failure setting device |
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| JP2004240082A (en) * | 2003-02-05 | 2004-08-26 | Shigemichi Kadowaki | Hydraulic experimental apparatus |
| CN2720545Y (en) * | 2004-07-05 | 2005-08-24 | 青岛职业技术学院 | Refrigerator fault setting and principle demonstration experiment table |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106442155A (en) * | 2016-10-20 | 2017-02-22 | 湖南众航科技有限公司 | Intelligent air pressure test experiment table |
| CN106762987A (en) * | 2017-01-26 | 2017-05-31 | 中国人民解放军装甲兵技术学院 | A kind of hydraulic system of engineering vehicle combined training platform |
| CN107387495A (en) * | 2017-06-19 | 2017-11-24 | 镇江四联机电科技有限公司 | A kind of modularization hydraulic test testing stand |
| CN110889988A (en) * | 2019-10-30 | 2020-03-17 | 深圳风向标教育资源股份有限公司 | Real case of instructing of vehicle data acquisition and control |
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