CN204025199U - A kind of clean oil path control system of excavator experimental training platform - Google Patents
A kind of clean oil path control system of excavator experimental training platform Download PDFInfo
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- CN204025199U CN204025199U CN201420481234.8U CN201420481234U CN204025199U CN 204025199 U CN204025199 U CN 204025199U CN 201420481234 U CN201420481234 U CN 201420481234U CN 204025199 U CN204025199 U CN 204025199U
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Abstract
The utility model relates to a kind of instruments used for education, relate in particular to a kind of clean oil path control system of excavator experimental training platform, the three group oil cylinder drive systems that comprise fuel tank, are connected in the gear pump of fuel tank and drive large arm, forearm, the bucket shovelman of excavator experimental training platform to do, filler opening in three group oil cylinder drive systems is all connected with gear pump by how logical oil-feed is, and the return opening in three group oil cylinder drive systems is all connected with fuel tank by how logical oil return is; How logical described oil-feed is leads to upper equal Bonding pressure tables with oil return more; How described oil-feed crosses relief valve is all connected with how logical oil return is.The utility model provides a kind of clean oil path control system of excavator experimental training platform reasonable in design, simple in structure; for controlling the exercises of excavator experimental training platform Reality simulation excavator arm work, and in this clean oil path control system, hydraulic protecting oil circuit is set.
Description
Technical field
The utility model relates to a kind of instruments used for education, relates in particular to a kind of clean oil path control system of excavator experimental training platform.
Background technique
Along with going deep into of the reform in education, the lab construction of colleges and universities is badly in need of the engineering experiment Practical training equipments such as middle-size and small-size excavator.
But these equipment are in the market mainly for the engineer operation in field, and volume is large, and the working pressure of hydraulic system is high, can not meet the requirement of teaching, and the cost cost of these equipment is high, concerning teaching, is also a kind of waste.
Therefore for teaching, there is no a kind of function that can reach engineering equipment at present yet, can meet again the experimental assembly that teaching requires.
Model utility content
In view of the above problems; the utility model has been proposed; the utility model provides a kind of clean oil path control system of excavator experimental training platform reasonable in design, simple in structure; for controlling the exercises of excavator experimental training platform Reality simulation excavator arm work, and in this clean oil path control system, hydraulic protecting oil circuit is set.
To achieve these goals, the technical solution adopted in the utility model is: a kind of clean oil path control system of excavator experimental training platform, it is characterized in that: the three group oil cylinder drive systems that comprise fuel tank, are connected in the gear pump of fuel tank and drive large arm, forearm, the bucket shovelman of excavator experimental training platform to do, filler opening in three group oil cylinder drive systems is all connected with gear pump by how logical oil-feed is, and the return opening in three group oil cylinder drive systems is all connected with fuel tank by how logical oil return is; How logical described oil-feed is leads to upper equal Bonding pressure tables with oil return more; How described oil-feed crosses relief valve is all connected with how logical oil return is.
By adopting technique scheme, the oil in fuel tank provides pressure oil for driving each cylinder movement by gear pump to each hydraulic oil cylinder driving system, realizes large arm, the forearm of excavator experimental training platform, the work of bucket shovel.Protection oil circuit is also set in oil-way system, and when three group oil cylinder drive systems are all closed, it is excessive that pressure gauge detects pressure, pressure oil will by be connected to oil-feed how the relief valve of logical and oil return between how logical flow in fuel tank, realize the protection to whole oil circuit.This oil path control system is reasonable in design, simple in structure, can be used for controlling the exercises that experimental training platform digs the work of arm simulation mechanism simulation excavator.
The utility model is further set to: described hydraulic oil cylinder driving system comprises 3-position 4-way solenoid directional control valve, 3-position 4-way solenoid directional control valve is provided with filler opening, return opening and two actuator ports, the first actuator port of described 3-position 4-way solenoid directional control valve is connected with the second Pilot operated check valve control port with the filler opening of the first Pilot operated check valve, the second actuator port of described 3-position 4-way solenoid directional control valve is connected with the second Pilot operated check valve filler opening with the control port of the first Pilot operated check valve, the oil outlet of described the first Pilot operated check valve and the second Pilot operated check valve is connected with the oil inlet and outlet at oil cylinder two ends respectively.
By adopting technique scheme, the work of shoveling for realizing large arm, forearm, the bucket of excavator experimental training platform, this oil-way system working stability, mechanism is simple.
The utility model is further set to: in described hydraulic oil cylinder driving system, each hydraulic element are all connected by transparent nylon flexible pipe, and each hydraulic element shell all adopts transparent organic glass material to make.
By adopting technique scheme, make student can watch intuitively between the working condition of each transparent hydraulic element inside and hydraulic element the flowing state of oil circuit in transparent nylon flexible pipe, be convenient to student and understand the working principle of each hydraulic element and the working principle of whole oil path control system.
The utility model is further set to: the isolating plate that fuel tank is separated into oil return settling zone and oil suction district is set in described fuel tank, and the inlet port place in described oil suction district arranges oil purifier.
By adopting technique scheme, oil in return tube first flows into the oil return settling zone in fuel tank, overflow across again isolating plate and enter oil suction district, the inlet port place in oil suction district arranges oil purifier simultaneously, make oil return through precipitation and after filtering again pump suck oil path control system, through sufficient filtration treatment, remove the impurity in hydraulic oil, avoid the trash flow that exists in oil circuit time damage hydraulic element, affect the work of whole oil circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the clean oil path control system of a kind of excavator experimental training platform of the utility model;
Fig. 2 is the schematic diagram of the utility model hydraulic oil cylinder driving system;
Fig. 3 is the utility model Oiltank structure schematic diagram.
Number in the figure implication: 1-fuel tank; 2-gear pump; How logical 3-oil-feed is; 4-pressure gauge; How logical 5-oil return is; 6-hydraulic oil cylinder driving system; 7-3-position 4-way solenoid directional control valve; 71-the first actuator port; 72-the second actuator port; 73-return opening; 74-filler opening; 8-the first Pilot operated check valve; 9-the second Pilot operated check valve; 10-oil cylinder; 11-isolating plate; 12-oil purifier; 13-relief valve; 14-oil return settling zone; 15-oil suction district.
Embodiment
For the ease of understanding the utility model, below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
The clean oil path control system of the present embodiment a kind of excavator experimental training platform as shown in Figure 1-Figure 3, for controlling the work of digging arm simulation mechanism on excavator experimental training platform, this oil path control system digs the large arm of arm simulation mechanism, forearm, bucket shovelman work for controlling hydraulic oil cylinder driving.The three group oil cylinder drive systems 6 that this oil path control system comprises fuel tank 1, be connected in the gear pump 2 of fuel tank 1 and the large arm of excavator experimental training platform, forearm, bucket shovelman are done, filler opening 74 in three group oil cylinder drive systems 6 all leads to 3 by oil-feed more to be connected with gear pump 2, and the return opening 73 in three group oil cylinder drive systems 6 all leads to 5 by oil return more to be connected with fuel tank 1; Equal Bonding pressure table 4 on 5 is led in described oil-feed many logical 3 and oil return more; Described oil-feed leads to 3 more to be connected by relief valve 13 and oil return many logical 5.Described hydraulic oil cylinder driving system 6 comprises 3-position 4-way solenoid directional control valve 7, 3-position 4-way solenoid directional control valve 7 is provided with filler opening 74, return opening 73 and two actuator ports, the first actuator port 71 of 3-position 4-way solenoid directional control valve 7 is connected with the second Pilot operated check valve 8 control ports with the filler opening of the first Pilot operated check valve 8, the second actuator port 72 of 3-position 4-way solenoid directional control valve 7 is connected with the second Pilot operated check valve 9 filler openings with the control port of the first Pilot operated check valve 8, the oil outlet of the first Pilot operated check valve 8 and the second Pilot operated check valve 9 is connected with the oil inlet and outlet at oil cylinder 10 two ends respectively, filler opening 74 in three described group oil cylinder drive systems 6 all leads to 3 by oil-feed more to be connected with gear pump 2, and the return opening in three described group oil cylinder drive systems 6 all leads to 5 by oil return more to be connected with fuel tank 1, equal Bonding pressure table 4 on 5 is led in described oil-feed many logical 3 and oil return more, oil-feed leads to 3 more to be connected with relief valve 13 and oil return many logical 5 by flexible pipe.
In the present embodiment, realize the work of digging arm mechanism in excavator experimental training platform by technique scheme, three group oil cylinder drive systems 6 are respectively used to the work that the large arm of arm mechanism, forearm, scraper bowl are dug in driving.This clean oil path control system working method is as follows: as shown in Figure 2, while needing oil cylinder 6 piston rods to move right, 7 conductings of 3-position 4-way solenoid directional control valve, its the first actuator port 71 conductings, pressure oil enters the left chamber of oil cylinder 6 through the first Pilot operated check valve 8, and the control port that also enters the second Pilot operated check valve 9, opens the second Pilot operated check valve 9 simultaneously, make the oil cylinder 6 right chamber oil return can be through the second Pilot operated check valve 9 and 3-position 4-way solenoid directional control valve 7 oil sump tanks 1, piston just moves right; Otherwise, 7 conductings of 3-position 4-way solenoid directional control valve, its second actuator port 72 conductings, oil cylinder 6 piston rods are to left movement.In this clean oil path control system, the oil inlet hose of three group oil cylinder drive systems 6 is all by how logical 3 connection teeth wheel pump 2 fuel feeding of oil-feed, and the oil return flexible pipe that gear pump 2 connects fuel tank 1, three group oil cylinder drive system 6 all connects fuel tank 1 oil return by oil return many logical 5; In oil-way system, be provided with protection oil circuit; when three group oil cylinder drive systems 6 are all closed, gear pump 2 is also in work, is connected to the oil-feed the pressure how pressure gauges 4 in logical 3 detect when excessive; oil pressure flows to oil return from the how logical 3 process relief valves 13 of oil-feed and leads to 5 more, back into fuel tank 1.
In the present embodiment, described 3-position 4-way solenoid directional control valve 7 its spools can be realized the conversion of left position, meta, three positions, right position, and realize the perforation of different modes between four hydraulic fluid ports.When spool during in meta each hydraulic fluid port each do not communicate; When spool in left when position oil circuit from its filler opening 74, enter the first actuator port 71 and go out, its return opening 73 communicates with the second actuator port 72 simultaneously; When spool in right when position oil circuit from its filler opening 74, enter the second actuator port 72 and go out, its return opening 73 communicates with the first actuator port 71 simultaneously.
In the present embodiment, have filler opening, oil outlet, control port on described Pilot operated check valve, when control port access failure pressure oil liquid, Pilot operated check valve is worked as common one-way valve, and pressure oil only flows to oil outlet from filler opening, can not reverse flow.When the input of control port oil pilot pressure, piston mandril moves under pressure oil effect, with push rod, backs down one-way valve, and oil inlet and outlet is connected, if oil outlet is greater than filler opening, just can make fluid reverse flow.
In the present embodiment, each described hydraulic element are all connected by transparent nylon flexible pipe, and each described hydraulic element shell all adopts transparent organic glass material to make.
By adopting technique scheme, make student can watch intuitively between the working condition of each transparent hydraulic element inside and hydraulic element the flowing state of oil circuit in transparent nylon flexible pipe, be convenient to student and understand the working principle of each hydraulic element and the working principle of whole oil path control system.
In the present embodiment, the interior isolating plate 11 that fuel tank is separated into 14He oil suction district, oil return settling zone 15 that arranges of described fuel tank 1, the inlet port place in described oil suction district arranges oil purifier 12.
By adopting technique scheme, oil in return tube first flows into oil return settling zone 14, through precipitation, then overflows across isolating plate 11 and enters oil suction district 15, simultaneously the inlet port place in oil suction district 15 arranges oil purifier 12, make oil return through precipitation and after filtering again pump suck oil path control system.
In the present embodiment, described fuel tank 1 shell adopts transparent organic glass material to make.Be convenient to the oil circuit working condition of observation of students fuel tank 1 inside.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these of above-mentioned hypothesis improve and modification also should be considered as protection domain of the present utility model.
Claims (4)
1. the clean oil path control system of an excavator experimental training platform, it is characterized in that: the three group oil cylinder drive systems that comprise fuel tank, are connected in the gear pump of fuel tank and drive large arm, forearm, the bucket shovelman of excavator experimental training platform to do, filler opening in three group oil cylinder drive systems is all connected with gear pump by how logical oil-feed is, and the return opening in three group oil cylinder drive systems is all connected with fuel tank by how logical oil return is; How logical described oil-feed is leads to upper equal Bonding pressure tables with oil return more; How described oil-feed crosses relief valve is all connected with how logical oil return is.
2. the clean oil path control system of a kind of excavator experimental training platform according to claim 1, it is characterized in that: described hydraulic oil cylinder driving system comprises 3-position 4-way solenoid directional control valve, 3-position 4-way solenoid directional control valve is provided with filler opening, return opening and two actuator ports, the first actuator port of described 3-position 4-way solenoid directional control valve is connected with the second Pilot operated check valve control port with the filler opening of the first Pilot operated check valve, the second actuator port of described 3-position 4-way solenoid directional control valve is connected with the second Pilot operated check valve filler opening with the control port of the first Pilot operated check valve, the oil outlet of described the first Pilot operated check valve and the second Pilot operated check valve is connected with the oil inlet and outlet at oil cylinder two ends respectively.
3. the clean oil path control system of a kind of excavator experimental training platform according to claim 2, it is characterized in that: in described hydraulic oil cylinder driving system, each hydraulic element are all connected by transparent nylon flexible pipe, and each hydraulic element shell all adopts transparent organic glass material to make.
4. according to the clean oil path control system of a kind of excavator experimental training platform described in claim 1 or 2 or 3, it is characterized in that: the isolating plate that fuel tank is separated into oil return settling zone and oil suction district is set in described fuel tank, and the inlet port place in described oil suction district arranges oil purifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420481234.8U CN204025199U (en) | 2014-08-15 | 2014-08-15 | A kind of clean oil path control system of excavator experimental training platform |
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| CN201420481234.8U CN204025199U (en) | 2014-08-15 | 2014-08-15 | A kind of clean oil path control system of excavator experimental training platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900108A (en) * | 2015-06-30 | 2015-09-09 | 常州机电职业技术学院 | Training platform for demonstrating and detecting excavator hydraulic system circuit |
| CN107680471A (en) * | 2017-11-15 | 2018-02-09 | 湖南长庆机电科教有限公司 | Engineering machinery hydraulic designs and experience system |
-
2014
- 2014-08-15 CN CN201420481234.8U patent/CN204025199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900108A (en) * | 2015-06-30 | 2015-09-09 | 常州机电职业技术学院 | Training platform for demonstrating and detecting excavator hydraulic system circuit |
| CN107680471A (en) * | 2017-11-15 | 2018-02-09 | 湖南长庆机电科教有限公司 | Engineering machinery hydraulic designs and experience system |
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