CN208533609U - A kind of hydraulic crawler excavator rotation energy recovery system - Google Patents
A kind of hydraulic crawler excavator rotation energy recovery system Download PDFInfo
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- CN208533609U CN208533609U CN201820924837.9U CN201820924837U CN208533609U CN 208533609 U CN208533609 U CN 208533609U CN 201820924837 U CN201820924837 U CN 201820924837U CN 208533609 U CN208533609 U CN 208533609U
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Abstract
A kind of hydraulic crawler excavator rotation energy recovery system, including variable pump, motor, piezoelectric energy-conversion device, accumulator, three position four-way directional control valve, fuel tank, the first bi-bit bi-pass reversal valve, the second bi-bit bi-pass reversal valve and hydraulic motor；The utility model swing arm hydraulic system can be realized first passes through piezoelectricity transferring structure realization hydraulic energy to the conversion of the first time of electric energy under energy saving model, and energy, which is collected storage, when then oil liquid passes through accumulator realizes secondary energy regenerating.The mode that accumulator individually recycles and accumulator and piezoelectricity transferring structure recycle jointly may be implemented in energy recovery process simultaneously.
Description
Technical field
The utility model belongs to hydraulic vibration energy regenerating technical field of power generation, especially a kind of hydraulic crawler excavator rotation energy
Recovery system.
Background technique
Important component of the engineering machinery as equipment manufacturing industry, it builds in national defense construction engineering, communications and transportation, the energy
The construction of the raw and semifinished materials industries such as industrial construction and production, mine and production, agriculture, forestry, water conservancy construction, industry are built with civil buildings, city
If, the multiple fields such as environmental protection are applied.And hydraulic crawler excavator is as a member in engineering machinery, have high energy consumption,
The characteristics of low emission, causes a large amount of energy dissipation to be lost, and causes environmental pollution and energy waste serious, therefore, to hydraulic excavating
Machine, which carries out hydraulic system, which improves the purpose for realizing its energy-saving and emission-reduction, has very necessary research significance.
The movement of hydraulic crawler excavator swing mechanism accounts for about the 50%-70% of entire cycle time for working, and energy consumption accounts for
25%-40%, the calorific value for turning round hydraulic circuit account for the 30%-40% of hydraulic system total calorific value.To improve hydraulic crawler excavator
Productivity and function utilization rate, and the portion of energy is recycled mostly uses in accumulator or battery to energy at present
Amount carries out storage conversion, and recovery efficiency is lower.With the fast development of intellectual material in recent years, piezoelectric ceramics has mechanical-electric coupling
The higher feature of coefficient is widely used in terms of realizing energy regenerating Transformation Application.It, can be quick with high conversion efficiency
Realize the recycling of energy.Meanwhile piezoelectricity transferring structure can be effectively combined with accumulator and energy is recycled, it can
It is effective to realize energy rapid conversion, recovery efficiency is improved, conversion link is reduced.By piezo technology and hydraulic technique connected applications
With more application value realistic.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic crawler excavator rotation energy recovery systems, to solve above-mentioned ask
Topic.
To achieve the above object, the utility model uses following technical scheme:
A kind of hydraulic crawler excavator rotation energy recovery system, including variable pump, motor, piezoelectric energy-conversion device, accumulator,
Three position four-way directional control valve, fuel tank, the first bi-bit bi-pass reversal valve, the second bi-bit bi-pass reversal valve and hydraulic motor；Variable pump connects
Connected tank, the first entrance of the output end connection three position four-way directional control valve of variable pump, variable pump are connected with motor；3-position 4-way
The first outlet of reversal valve is divided into two-way, connects the entrance of hydraulic motor all the way, and another way connects the first bi-bit bi-pass reversal valve,
The entrance of the first outlet connection piezoelectric energy-conversion device of first bi-bit bi-pass reversal valve, the outlet connection second of piezoelectric energy-conversion device
Bi-bit bi-pass reversal valve, the outlet of the second outlet connection piezoelectric energy-conversion device of the first bi-bit bi-pass reversal valve；Two or two two
The outlet of logical reversal valve is connected to variable pump, is formed into a loop, is provided with accumulation of energy between the second bi-bit bi-pass reversal valve and variable pump
Device；The second entrance of the outlet connection three position four-way directional control valve of hydraulic motor, the second outlet of three position four-way directional control valve are connected with
Fuel tank；Hydraulic motor is for driving revolving platform of excavator to move.
Further, speed governing valve is provided between the first bi-bit bi-pass reversal valve and piezoelectric energy-conversion device.
Further, pipeline is provided between the outlet and entrance of hydraulic motor, setting is unidirectional there are two first on pipeline
Valve, and the entrance of two check valves is oppositely arranged；Pipeline between two the first check valves is connected with fuel tank.
Further, it is arranged between the entrance of the first bi-bit bi-pass reversal valve and first check valve in hydraulic motor exit
There is pipeline, second one-way valve, the entrance of the first bi-bit bi-pass reversal valve of outlet connection of second one-way valve are provided on pipeline；Three
Position and four-way reversing valve is connected on the pipeline of the first bi-bit bi-pass reversal valve and is provided with third check valve, the outlet of third check valve
Connect the first bi-bit bi-pass reversal valve.
Further, it is provided with the 4th check valve between accumulator and variable pump, the entrance of the 4th check valve is towards accumulation of energy
Device.
Further, variable pump is also connected with third bi-bit bi-pass reversal valve, and the outlet of third bi-bit bi-pass reversal valve connects
It is connected to fuel tank；Overflow valve is provided between fuel tank at the second outlet of variable pump and three position four-way directional control valve.
Further, piezoelectric energy-conversion device is formed in parallel or series by 50 groups of PZT (piezoelectric transducer)s.
Compared with prior art, the utility model has following technical effect:
The utility model swing arm hydraulic system can be realized first passed through under energy saving model piezoelectricity transferring structure realize it is hydraulic
It can be converted to the first time of electric energy, energy, which is collected storage, when then oil liquid passes through accumulator realizes secondary energy time
It receives.The mould that accumulator individually recycles and accumulator and piezoelectricity transferring structure recycle jointly may be implemented in energy recovery process simultaneously
Formula.
Piezoelectric energy-conversion device is preferably applied in the hydraulic system of engineering machinery by the utility model, realizes piezoelectricity
The preferable combination of generation technology and hydraulic transmission technology.Change traditional energy recuperation mode.
The utility model Hydraulic slewing system eliminates the trimmer valve in traditional rotary system, reduces the application of valve, realizes
The secondary recovery conversion of energy.
Detailed description of the invention
Fig. 1 is the hydraulic vibration energy recovery principle figure of the utility model piezoelectricity transferring structure；
Fig. 2 is the hydraulic vibration energy regenerating piezoelectricity transferring structure cascaded structure signal of the utility model piezoelectricity transferring structure
Figure
The hydraulic vibration energy regenerating piezoelectricity transferring structure parallel-connection structure of Fig. 3 the utility model piezoelectricity transferring structure is illustrated
Figure；
Wherein: 1, fuel tank；2, variable pump；3, motor；5, three position four-way directional control valve；7, the first check valve；9, hydraulic horse
It reaches；10, third check valve；11, second one-way valve；12, speed governing valve；13, piezoelectric energy-conversion device；14, the second bi-bit bi-pass commutates
Valve；15, accumulator；16, the 4th check valve；17, third bi-bit bi-pass reversal valve；19, the first bi-bit bi-pass reversal valve；20, it overflows
Flow valve.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described:
Please refer to Fig. 1-Fig. 3, a kind of hydraulic crawler excavator rotation energy recovery system, including variable pump 2, motor 3, piezoelectricity
Transducing head 13, accumulator 15, three position four-way directional control valve 5, fuel tank 1, the first bi-bit bi-pass reversal valve 19, the second bi-bit bi-pass change
To valve 14 and hydraulic motor 9；Variable pump 2 connects fuel tank 1, and the first of the output end connection three position four-way directional control valve 5 of variable pump 2 enters
Mouthful, variable pump 2 is connected with motor 3；The first outlet of three position four-way directional control valve 5 is divided into two-way, connects hydraulic motor 9 all the way
Entrance, another way connect the first bi-bit bi-pass reversal valve 19, and the first outlet connection piezoelectricity of the first bi-bit bi-pass reversal valve 19 changes
The entrance of energy device 13, the outlet of piezoelectric energy-conversion device 13 connect the second bi-bit bi-pass reversal valve 14, the commutation of the first bi-bit bi-pass
The outlet of the second outlet connection piezoelectric energy-conversion device 13 of valve 19；The outlet of second bi-bit bi-pass reversal valve 14 is connected to variable pump
2, forming circuit is provided with accumulator 15 between the second bi-bit bi-pass reversal valve 14 and variable pump 2；The outlet of hydraulic motor 9 connects
The second entrance of three position four-way directional control valve 5 is connect, the second outlet of three position four-way directional control valve 5 is connected with fuel tank 1；Hydraulic motor 9 is used
In driving revolving platform of excavator movement.
Speed governing valve 12 is provided between first bi-bit bi-pass reversal valve 19 and piezoelectric energy-conversion device 13.
Pipeline is provided between the outlet and entrance of hydraulic motor 9, the first check valve 7 there are two settings on pipeline, and two
The entrance of a check valve is oppositely arranged；Pipeline between two the first check valves 7 is connected with fuel tank 1.
Pipe is provided between first check valve 7 in 9 exit of entrance and hydraulic motor of the first bi-bit bi-pass reversal valve 19
Road is provided with second one-way valve 11, the entrance of the first bi-bit bi-pass reversal valve 19 of outlet connection of second one-way valve 11 on pipeline；
Three position four-way directional control valve 5 is connected on the pipeline of the first bi-bit bi-pass reversal valve 19 and is provided with third check valve 10, and third is unidirectional
The outlet of valve 10 connects the first bi-bit bi-pass reversal valve 19.
It is provided with the 4th check valve 16 between accumulator 15 and variable pump 2, the entrance of the 4th check valve 16 is towards accumulator
15。
Variable pump 2 is also connected with third bi-bit bi-pass reversal valve 17, and the outlet of third bi-bit bi-pass reversal valve 17 is connected with
Fuel tank 1；Overflow valve 20 is provided between fuel tank 1 at the second outlet of variable pump 2 and three position four-way directional control valve 5.
Piezoelectric energy-conversion device 13 is formed in parallel or series by 50 groups of PZT (piezoelectric transducer)s.
A kind of recovery method of hydraulic crawler excavator rotation energy recovery system, based on one kind described in any one among the above
Hydraulic crawler excavator rotation energy recovery system, comprising the following steps:
Step 1, when excavator is in full bucket-shaped state, revolving platform starts to start work, without hydraulic oil in accumulator 15, three
Position and four-way reversing valve 5 is in left position, and the first bi-bit bi-pass reversal valve 19 and the second bi-bit bi-pass reversal valve 14 are in an off state,
Variable pump 2 provides the left chamber for entering hydraulic motor 9 by three position four-way directional control valve 5, drives revolving platform movement, extra is hydraulic
Oil passes through second one-way valve 11, and in the case where the first two position two-way valve 19 is in left position state, hydraulic oil is directly entered the arrival of speed governing valve 12
Energy regenerating power generation is carried out in piezoelectric energy-conversion device 13, and 50 groups of PZT (piezoelectric transducer)s is equally used at this to be connected in parallel implementation to damage
Then the recycling of disability amount enters accumulator by the second bi-bit bi-pass reversal valve 14, realizes the recycling again of energy；
Step 2, when the first two position two-way valve 19 is in right position, energy regenerating is implemented separately in accumulator, hydraulic oil not
During cut-off is given, accumulator reaches maximum pressure value, at this point, the second bi-bit bi-pass reversal valve 14 disconnects, third bi-bit bi-pass
Reversal valve 17 in an ON state, variable pump 2 by third bi-bit bi-pass reversal valve 17 realize off-load, accumulator release energy through
It crosses the 4th check valve 16 and realizes fuel feeding, be supplied to the exit drive motor operating of variable pump；When pressure reaches in accumulator
When lowest limit, the second bi-bit bi-pass reversal valve 14 is connected, and accumulator carries out repairing and no longer carries out fuel feeding to oil circuit；3-position 4-way
The reversing mechanism of reversal valve 5 realizes the braking of slewing equipment at middle position, and due to the presence of rotary inertia, extra is hydraulic
Oil is stored by second one-way valve 11 into accumulator, realizes energy regenerating.
Step 3, when excavator is in empty bucket-shaped state, revolving platform starts to invert, and three position four-way directional control valve 5 is in right position,
Second bi-bit bi-pass reversal valve 14 is connected, and realizes accumulator repairing；When maximum pressure value is greater than the set value in accumulator, second
Bi-bit bi-pass reversal valve 14 disconnects, and third bi-bit bi-pass reversal valve 17 is connected, and the oil liquid of pump discharge is directly discharged into fuel tank and is dropped
The outlet pressure of low hydraulic pump, accumulator convert the energy of recycling on the right side of hydraulic energy supply motor and constantly carry out to working connection
Repairing pressurization；When energy storage pressure reaches lowest limit, the second bi-bit bi-pass reversal valve 14 is connected, the commutation of third bi-bit bi-pass
Valve 17 disconnects, and by the independent fuel feeding of hydraulic pump 1, extra hydraulic oil is realized by third check valve 10 by piezoelectric energy-conversion device 13
The recycling of primary energy then proceedes to flow into accumulator 15 for energy secondary recovery；
Step 4, the list of accumulator can be realized by cutting the first bi-bit bi-pass reversal valve 19 in accumulator oil replenishing process
Solely recover energy the effect to recover energy jointly with transducing structure and accumulator；Reversing mechanism in three position four-way directional control valve 5
When in an intermediate position, the braking action of slewing equipment is realized, at this point, motor is converted into power source to accumulator from executing agency
Fuel feeding is prepared for movement again.
The method that hydraulic system energy recycling is implemented separately including the use of accumulator in accumulator energy recycling system, is mainly adopted
The recycling that energy is realized in hydraulic gyration brake circuit is connected on accumulator.Piezoelectricity is floating can energy of the device in conjunction with accumulator
On the one hand amount, which recycles, realizes that hydraulic energy by the floating energy direct trans-utilization of device of piezoelectricity, on the other hand realizes energy by accumulator again
The collection of amount stores, and realizes that the secondary recovery of energy utilizes, meanwhile, accumulator can also be used and realize the work individually to recover energy
With.
Claims (7)
1. a kind of hydraulic crawler excavator rotation energy recovery system, which is characterized in that including variable pump (2), motor (3), piezoelectricity
Transducing head (13), accumulator (15), three position four-way directional control valve (5), fuel tank (1), the first bi-bit bi-pass reversal valve (19), second
Bi-bit bi-pass reversal valve (14) and hydraulic motor (9)；Variable pump (2) connects fuel tank (1), the output end connection three of variable pump (2)
The first entrance of position and four-way reversing valve (5), variable pump (2) are connected with motor (3)；The first of three position four-way directional control valve (5) goes out
Mouth is divided into two-way, all the way the entrance of connection hydraulic motor (9), another way the first bi-bit bi-pass reversal valve (19) of connection, and the one or two
The outlet of the entrance of first outlet connection piezoelectric energy-conversion device (13) of position two way selected valve (19), piezoelectric energy-conversion device (13) connects
The second bi-bit bi-pass reversal valve (14) is connect, the second outlet of the first bi-bit bi-pass reversal valve (19) connects piezoelectric energy-conversion device (13)
Outlet；The outlet of second bi-bit bi-pass reversal valve (14) is connected to variable pump (2), forming circuit, the commutation of the second bi-bit bi-pass
Accumulator (15) are provided between valve (14) and variable pump (2)；The outlet of hydraulic motor (9) connects three position four-way directional control valve (5)
Second entrance, the second outlet of three position four-way directional control valve (5) is connected with fuel tank (1)；Hydraulic motor (9) is for driving excavator
Revolving platform movement.
2. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that the one or two two
Speed governing valve (12) are provided between logical reversal valve (19) and piezoelectric energy-conversion device (13).
3. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that hydraulic motor
(9) pipeline is provided between outlet and entrance, setting is there are two the first check valve (7) on pipeline, and two check valves enter
Mouth is oppositely arranged；Pipeline between two the first check valves (7) is connected with fuel tank (1).
4. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that the one or two two
It is provided with pipeline between the entrance of logical reversal valve (19) and first check valve (7) in hydraulic motor (9) exit, is arranged on pipeline
Have second one-way valve (11), the outlet of second one-way valve (11) connects the entrance of the first bi-bit bi-pass reversal valve (19)；Three four
Logical reversal valve (5), which are connected on the pipeline of the first bi-bit bi-pass reversal valve (19), is provided with third check valve (10), and third is unidirectional
The outlet of valve (10) connects the first bi-bit bi-pass reversal valve (19).
5. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that accumulator (15)
It is provided with the 4th check valve (16) between variable pump (2), the entrance of the 4th check valve (16) is towards accumulator (15).
6. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that variable pump (2)
It is also connected with third bi-bit bi-pass reversal valve (17), the outlet of third bi-bit bi-pass reversal valve (17) is connected with fuel tank (1)；Variable
Overflow valve (20) are provided between fuel tank (1) at the second outlet of pump (2) and three position four-way directional control valve (5).
7. a kind of hydraulic crawler excavator rotation energy recovery system according to claim 1, which is characterized in that piezoelectric energy-conversion dress
(13) are set to be formed in parallel or series by 50 groups of PZT (piezoelectric transducer)s.
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| CN201820924837.9U CN208533609U (en) | 2018-06-14 | 2018-06-14 | A kind of hydraulic crawler excavator rotation energy recovery system |
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| CN201820924837.9U CN208533609U (en) | 2018-06-14 | 2018-06-14 | A kind of hydraulic crawler excavator rotation energy recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571028A (en) * | 2018-06-14 | 2018-09-25 | 长安大学 | A kind of hydraulic crawler excavator rotation energy recovery system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571028A (en) * | 2018-06-14 | 2018-09-25 | 长安大学 | A kind of hydraulic crawler excavator rotation energy recovery system and method |
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| GR01 | Patent grant | ||
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Granted publication date: 20190222 Termination date: 20200614 |