CN108777107A - Engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform - Google Patents
Engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform Download PDFInfo
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- CN108777107A CN108777107A CN201811070548.8A CN201811070548A CN108777107A CN 108777107 A CN108777107 A CN 108777107A CN 201811070548 A CN201811070548 A CN 201811070548A CN 108777107 A CN108777107 A CN 108777107A
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- hydraulic
- engineering machinery
- crawler type
- traning platform
- practical traning
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- 238000010586 diagram Methods 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 2
- 239000003921 oil Substances 0.000 description 7
- 238000012549 training Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000019771 cognition Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform, practical traning platform includes rack, demonstrator and control circuit, demonstrator is fixedly mounted in rack, demonstrator is equipped with circuit diagram, control circuit is arranged on demonstrator, control circuit includes frequency converter, motor and hydraulic pump, the rotation of transducer drive motor, motor drive hydraulic pump rotation.The present invention can not only reaction engineering machinery crawler type all-hydraulic stepless speed-changing system parts connection type comprehensively, and combining with teaching increases hydraulic circuit control principle drawing, while corresponding pressure and flowmeter are provided on teaching board；During so that student is recognized parts, engineering machinery crawler type all-hydraulic stepless speed-changing system control logic is grasped comprehensively, the understanding to parameters is deepened by the variation of system pressure and flow simultaneously, further keeps engineering machinery crawler type all-hydraulic stepless speed-changing system control logic firmly in mind.
Description
Technical field
The present invention discloses a kind of practical traning platform, especially a kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform, belongs to
In engineering machinery hydraulic field teaching training device, the teaching of Vocationl Technical College's engineering machinery specialized courses is can be widely used for,
While cultivating student's practical operative ability, the control of newly built construction mechanical-hydraulic and principle are grasped.
Background technology
With the rapid development of Construction Machinery Industry in China, on the one hand for the continuous improvement of maintenance personal's quality, including
The projects for school mechanical major graduate such as middle duty, professorship, undergraduate course, another aspect China engineering machinery profession is in training operation course
What teaching faced is the problems such as equipment is few, teaching is single.The development of engineering machinery teaching aid is in China also in primary
Developing stage, engineering machinery teaching product domestic at present mostly based on hydraulic connecting practical traning platform, the course of work by simulate into
Row demonstration, has greater difference with actual condition, principle, does not form system, can not be competent at the teaching task of real training.
Invention content
It is imparted knowledge to students using demonstrator for engineering machinery crawler type all-hydraulic machinery in the prior art mentioned above, effect
The disadvantage of difference, the present invention provide a kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform practical traning platform, and it is special to use
Structure design, it can be achieved that student simulated teaching.
The present invention solve its technical problem the technical solution adopted is that：A kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed
Practical traning platform, practical traning platform include rack, demonstrator and control circuit, and demonstrator is fixedly mounted in rack, and demonstrator is equipped with electricity
Lu Tu, control circuit are arranged on demonstrator, and control circuit includes frequency converter, motor and hydraulic pump, and transducer drive motor turns
Dynamic, motor drives hydraulic pump rotation.
The technical solution that the present invention solves the use of its technical problem further comprises：
It is in series with electronics thermal overload relay on the motor input circuit.
It is in series with battery main switch on the motor input circuit.
There are three the hydraulic pump is set.
Pressure gauge is connected on the output interface of the hydraulic pump, pressure gauge is connected on instrument display panel.
It is connected with thermometer on the instrument display panel.
It is connected with flowmeter on the instrument display panel.
The beneficial effects of the invention are as follows：The present invention can not only comprehensive reaction engineering machinery crawler type all-hydraulic electrodeless variable-speed
System parts connection type, and combining with teaching increases hydraulic circuit control principle drawing, while being provided with and corresponding on teaching board
Pressure and flowmeter；During so that student is recognized parts, engineering machinery crawler type all-hydraulic electrodeless variable-speed system is grasped comprehensively
System control logic, while the understanding to parameters is deepened by the variation of system pressure and flow, further keep engineering machine firmly in mind
Tool crawler type all-hydraulic stepless speed-changing system control logic.
The present invention be according to the integrated practical traning platform of prototype vehicle dismounting, increase teaching board hydraulic schematic diagram, sectional view and pressure,
The changing rule of flowmeter numerical tabular, dynamic display system pressure and flow, make student to engineering machinery crawler type all-hydraulic without
There are one more comprehensively recognize pole speed change.The increased asphalt principle figure of the present invention, sectional view and former vehicle material object can match one by one, make
Member more can be very clear, facilitates study and cognition.The present invention shows hydraulic pressure using universal crawler-mounted excavator as prototype, by plunger
The components such as pump, variable hydraulic motor, control valve, hydraulic oil container, radiator, overflow valve are assembled into teaching aid by oil pipe, can be same
Than being the good assistant of engineering machinery electrodeless variable-speed theory teaching in former vehicle performance.Component is close with real vehicle installation site simultaneously, behaviour
It is identical to make mode.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Description of the drawings
Fig. 1 is control system block diagram of the present invention.
Fig. 2 is oil circuit control principle schematic diagram of the present invention.
Fig. 3 is hydraulic pump works principle schematic of the present invention.
Specific implementation mode
The present embodiment is the preferred embodiment for the present invention, other its all principles and basic structure are identical or close as the present embodiment
As, within the scope of the present invention.
Attached drawing 1, attached drawing 2 and attached drawing 3 are please referred to, the present invention is mainly a kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed
Practical traning platform, practical traning platform include mainly rack, demonstrator and control circuit, and in the present embodiment, rack is made of steel pipe, are this hair
Bright main body supporting structure, practical traning platform rack use welding for steel structure, surface to be handled using spraying process, and band self-locking trundle fills
It sets.Demonstrator uses platy structure, demonstrator to be fixedly mounted in rack, and demonstrator is equipped with corresponding with control circuit of the present invention
Circuit diagram, the node in kind in circuit diagram（Such as：Electric elements, switch, controller etc.）Corresponding in kind, control is equipped at position
Circuit processed is arranged on demonstrator, and in the present embodiment, control circuit includes mainly frequency converter, motor and hydraulic pump, and frequency converter drives
Dynamic motor rotation, motor drives hydraulic pump to rotate, and in the present embodiment, replaces engine by motor, and adding frequency converter can be right
Its rotating speed is controlled.Motor drives hydraulic pump rotation, hydraulic pump pressure oil output.
In the present embodiment, using the hydraulic stepless speed change system that can really run, each main parts size composition is fully shown
Structure and logic control relation.It is driven by adjustable speed threephase asynchronous, invariable power can be carried out and permanent moment of torsion control is tested.It is logical
Defined load current value in frequency converter setting motor famous brand is crossed, electronics thermal overload relay is in series on motor input circuit,
Realization prevents motor overload with electronics thermal overload relay, and the impact during mechanical equipment starting/stopping, can lead in order to prevent
It crosses frequency converter setting and acceleration/deceleration is carried out with S curve figure.Power supply is in series in the present embodiment, on motor input circuit always to open
It closes, on-off control can be carried out to input power.
In the present embodiment, hydraulic pump uses plunger pump, and power replaces engine by motor, and adding frequency converter can be to it
Rotating speed is controlled.Motor drives hydraulic pump rotation, hydraulic pump pressure oil output.In the present embodiment, there are three hydraulic pump is set, pump
1 is used as pilot control, via solenoid valve, controls the change of motor swashplate angle.Can finally motor rotary speed be made to become faster.Work as solenoid valve
When not working, hydraulic oil unloads oil return box via overflow valve.Pump 2 is dynamic Control, via 34 logical hand-operated direction valves, controls oil stream
Direction, to change motor rotation direction, while motor speed also can be changed in valve core opening degree.When direction valve is failure to actuate, hydraulic pressure
Oil is finally back to fuel tank through valve core inside by radiator.Pump 3 is gear pump, does stand-by pump.
In the present embodiment, it is connected with pressure gauge on the output interface of hydraulic pump, the output pressure for detecting hydraulic pump, pressure
Power table is connected on instrument display panel, in the present embodiment, thermometer and flowmeter is connected on instrument display panel, for detecting ring
Border temperature and hydraulic fluid flow rate, and shown by instrument display panel.
In the present embodiment, real training deck plate using 4MM thickness it is corrosion-resistant, it is resistance to wound hit, anti-pollution, fire prevention, moisture-proof advanced aluminium
Mould plate, surface are handled through special process spray-applied primer；Panel is printed with will never fade colored hydraulic diagram, and student can intuitively compare
The operation principle of hydraulic diagram and cognition in kind and analysis hydraulic continuously variable transmission control system.Practical traning platform is always opened equipped with power supply
The safety devices such as pass, motor shield, motor transparent cover.
In the present embodiment, practical traning platform is equipped with safety devices such as battery main switch, motor shield, motor transparent covers.
Hydraulic circuit control principle of the present invention is identical as real vehicle, divides variable formula plunger pump control loop and running motor performance loop,
Entire drawing makes student very clear, to engineering machinery crawler type all-hydraulic electrodeless variable-speed transmission system key components and parts and connection
There are one full appreciations for control logic.Practical training stand and teaching board figure cooperation schematic diagram and component internal anatomy of the present invention, are presented former vehicle
Entire control principle makes student have a kind of consciousness for wanting to learn, this practical traning platform that can carry out operation demonstration, can also actually measure,
Key is identical with former vehicle parts；So such practical traning platform, can carry out the study of Theory Course, can also be put into practice
The operation of class；The technical ability that student acquires on practical traning platform can directly be used on real vehicle.
Claims (7)
1. a kind of engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform, it is characterized in that：The practical traning platform includes rack, shows
Teaching board and control circuit, demonstrator are fixedly mounted in rack, and demonstrator is equipped with circuit diagram, and control circuit is arranged in demonstrator
On, control circuit includes frequency converter, motor and hydraulic pump, the rotation of transducer drive motor, motor drive hydraulic pump rotation.
2. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 1, it is characterized in that：The electricity
Electronics thermal overload relay is in series on machine input circuit.
3. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 1, it is characterized in that：The electricity
It is in series with battery main switch on machine input circuit.
4. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 1, it is characterized in that：The liquid
There are three press pump is set.
5. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 1, it is characterized in that：The liquid
Pressure gauge is connected on the output interface of press pump, pressure gauge is connected on instrument display panel.
6. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 5, it is characterized in that：The instrument
It is connected with thermometer on table display panel.
7. engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform according to claim 5, it is characterized in that：The instrument
It is connected with flowmeter on table display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070548.8A CN108777107A (en) | 2018-09-13 | 2018-09-13 | Engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070548.8A CN108777107A (en) | 2018-09-13 | 2018-09-13 | Engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform |
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| Publication Number | Publication Date |
|---|---|
| CN108777107A true CN108777107A (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811070548.8A Pending CN108777107A (en) | 2018-09-13 | 2018-09-13 | Engineering machinery crawler type all-hydraulic electrodeless variable-speed practical traning platform |
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| CN (1) | CN108777107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853440A (en) * | 2019-10-30 | 2020-02-28 | 深圳风向标教育资源股份有限公司 | Integrated comprehensive simulation training platform for electricity and liquid of road roller |
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| CN209912356U (en) * | 2018-09-13 | 2020-01-07 | 深圳风向标教育资源股份有限公司 | Crawler-type full-hydraulic stepless speed change training platform for engineering machinery |
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2018
- 2018-09-13 CN CN201811070548.8A patent/CN108777107A/en active Pending
Patent Citations (14)
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| CN2760316Y (en) * | 2004-11-26 | 2006-02-22 | 北京农业信息技术研究中心 | Mobile hydraulic test bench with adjustable pressure and flow |
| CN101487465A (en) * | 2009-02-20 | 2009-07-22 | 朱留存 | Oil pump performance detection tester for continuously variable transmission |
| CN201698608U (en) * | 2010-04-12 | 2011-01-05 | 烟台三雄电子有限公司 | Simulated demonstration device for hydraulic control system of automotive automatic transmission |
| CN201681538U (en) * | 2010-05-28 | 2010-12-22 | 天津圣纳科技有限公司 | Continuously variable transmission demonstration practical training platform |
| CN202306943U (en) * | 2011-09-08 | 2012-07-04 | 石狮市鹏工汽车教学设备有限公司 | Teaching and practical training table for automatic air conditioning electronic network intelligent control system of automobile |
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| CN204045054U (en) * | 2014-09-03 | 2014-12-24 | 深圳市风向标科技有限公司 | Engine practical traning platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110853440A (en) * | 2019-10-30 | 2020-02-28 | 深圳风向标教育资源股份有限公司 | Integrated comprehensive simulation training platform for electricity and liquid of road roller |
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