CN209194415U - A kind of energy saver for spraying water with high pressure - Google Patents
A kind of energy saver for spraying water with high pressure Download PDFInfo
- Publication number
- CN209194415U CN209194415U CN201821734769.6U CN201821734769U CN209194415U CN 209194415 U CN209194415 U CN 209194415U CN 201821734769 U CN201821734769 U CN 201821734769U CN 209194415 U CN209194415 U CN 209194415U
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- Prior art keywords
- pressure
- water
- pump
- high pressure
- valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000005507 spraying Methods 0.000 title claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 48
- 239000002828 fuel tank Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 239000003921 oil Substances 0.000 description 74
- 241001417527 Pempheridae Species 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The utility model belongs to road surface high-pressure wash, sprinkler technical field, more particularly to a kind of energy saver for spraying water with high pressure, variable pump and control valve including forming circuit, the output end of the control valve connects water pump drive motor, the output end of the water pump drive motor connects high-pressure hydraulic pump, the output end of the high-pressure hydraulic pump is provided with high pressure water control valve, first interface is provided on the high pressure water control valve, second interface and third interface, the first interface connects right spray boom and sets spray boom in, the second interface connect left spray boom and it is described in set spray boom, spray boom after the third interface connection, Auto-matching can be realized according to several job requirements swept are washed, keep hydraulic pressure maximum, make the power consumption of this hydraulic control system minimum simultaneously.
Description
Technical field
The utility model belongs to road surface high-pressure wash, sprinkler technical field, and in particular to one kind is for spraying water with high pressure
Energy saver.
Background technique
Currently with the continuous development of national economy, continuous improvement of people's living standards, environmental protection increasingly by
Everybody attention, with the continuous propulsion of national Urbanization Construction, administration of city appearance is more and more important, wherein being with sweeper
The demand of main environmental sanitation cleaning outfit is also increasing, and Multifunctional sweeper is even more got the favour of people, therefore at present
Other than having the function of cleaning and aspirating rubbish, the function on high-pressure wash road surface also more and more applies to clean sweeper
Vehicle, therefore being designed and arranged for high pressure water system just becomes the main points that producer pays close attention to, sweeper realizes that high pressure washing is to pass through vehicle
What the high pressure spray boom of upper carrying was realized.
Authorization Notice No. are as follows: the patent of 205056328 U of CN, the water injector of all-purpose road cleaning vehicle, including water
Tank, the water pot are connect by cooler and fine filter with high-pressure hydraulic pump, the high-pressure hydraulic pump and giant, water spray
Frame, left and right spray boom, the connection of upper and lower spray nozzle, the water pot are also connect with low-pressure pump, the low-pressure pump and left and right
Water spray nozzle, the connection of low pressure hydraulic giant.The patent provides water source by water pot, by controlling the water outlet of different nozzles, makes cleaning vehicle
Every operation is carried out by different requirements, realizes the height of road pavement, curb, isolation strip guardrail, road sign, billboard and overpass etc.
The function of pressure cleaning and atomizing de-dusting and adjusting air humidity；Meanwhile having the low pressure waterway system of extension function concurrently, it can be right
Road surface carries out watering and carries out hydro-peening and pouring to trees, gardens；Vehicle highlights road cleaning, depositing dust damping and other water supply
Multifunction.The patent realizes the automatically controlled or hydraulic control system to main pump using electric proportional valve, controls the flow output of pump, reaches
Motor rotary speed is controlled, to control the high pressure water output of high-pressure hydraulic pump, whole process does not have corresponding feedback device, cannot basis
Operating condition carries out corresponding pressure adjustment, so will cause certain power loss, so that power consumption is excessive, does not meet and save instantly
The demand of energy environmental protection.
Utility model content
It is a kind of for spraying water with high pressure the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide
Energy saver.
The technical solution that this patent solves above-mentioned technical problem is as follows: a kind of energy saver for spraying water with high pressure, including
The output end of the variable pump and control valve of forming circuit, the control valve connects water pump drive motor, the water pump drive motor
Output end connect high-pressure hydraulic pump, the output end of the high-pressure hydraulic pump is provided with high pressure water control valve, the high pressure water control valve
On be provided with first interface, second interface and third interface, the first interface connect right spray boom and in set spray boom, described the
Two interfaces connect left spray boom and it is described in set spray boom, spray boom after the third interface connection.
Further, it realizes that the right spray boom sets spraying water with high pressure for spray boom in when the first interface obtains electric, works as institute
It states and realizes that the left spray boom sets spraying water with high pressure for spray boom in when second interface obtains electric, when the first interface and second interface are same
Realized when Shi get electricity it is described left and right and in set spraying water with high pressure for spray boom.
Further, high-pressure water pressure table is provided on the pipeline between the high-pressure hydraulic pump and high pressure water control valve, it is high
Pressure water pressure table is for comparing, the fiducial value of the actual loading of high-pressure hydraulic pump and hydraulic system pressure under different operating conditions, and one is pressure
Calibration reference is done in force feedback；Two do calibration reference to manually adjust.
Further, oil inlet, the oil outlet of the water pump drive motor are separately connected the control valve and fuel tank, described
Control valve includes water pump drive motor switch valve and load feedback pressure oil port LS, and the water pump drive motor switch valve setting exists
The oil inlet of the water pump drive motor is provided with speed regulation between the water pump drive motor switch valve and water pump drive motor
Valve, the variable pump include main oil pump, and the inlet port of the main oil pump is connect with the fuel tank, are provided on the main oil pump tiltedly
Disk, one end of the swash plate is connected with swash plate drive cylinder, between the swash plate drive cylinder and load feedback pressure oil port LS
It is provided with load-sensitive proportioning valve, the oil outlet of the main oil pump connects the load-sensitive proportioning valve by internal pilot oil
Oil inlet.
Further, system pressure protection valve is additionally provided in the control valve, the system pressure protection valve setting exists
Between the fuel tank and water pump drive motor switch valve.
Further, it is provided with pressure shut-off valve between the load-sensitive proportioning valve and swash plate drive cylinder, by right
After the setting of pressure shut-off valve realizes that main oil pump pressure reaches set value, swash plate swings to minimum position, to realize main oil
Zero delivery output is pumped, the effect of entire hydraulic system is protected.
Further, the variable pump further includes having main oil pump compensating cylinder, and the main oil pump compensating cylinder and the load are quick
Sense proportioning valve and pressure shut-off valve are all connected with, and the piston rod of the main oil pump compensating cylinder connects the other end of the swash plate, are risen
To the different operating condition variable output actions for stablizing main oil pump, the constant output of main oil pump is kept.
Further, system pressure table is provided on the load feedback circuit of the control valve and variable pump.
Further, spare interface is additionally provided on the high pressure water control valve.
The beneficial effect of this patent is:
1, the utility model detects the load feedback pressure of real work load posting by installing in hydraulic control system
Power hydraulic fluid port and load-sensitive proportioning valve realize that complete machine sprays water with high pressure and adjust matching water pump according to different operating conditions intelligences, automation
Motor rotary speed, to reach energy conservation and power match than requiring；Engine operates main oil pump, that is, starts to work normally, no reality
When workload, main oil pump discharge capacity zero；
2, the main oil pump of the utility model is variable cam-type axial piston pump, and it is dynamic to provide fluid to load-sensitive proportioning valve
Power, load signal are fed back through oil pipe to main oil pump signal hydraulic fluid port, and real load increases, reduce or when no-load, swash plate is according to biography
Feel signal, oil pressure reduces automatically, increases swashplate angle, with flow needed for meeting actual load, reach power conservation requirement, according to
The amount to high-pressure hydraulic pump water outlet of sweeping, several job requirements of discharge pressure realization Auto-matching are washed, work water pressure is made to meet reality
Demand, while keeping the power consumption of this hydraulic control system minimum；
3, the utility model variable pump is provided with the main oil pump being all connected with load-sensitive proportioning valve and pressure shut-off valve
Compensating cylinder, the other end of the piston rod connection swash plate of main oil pump compensating cylinder, plays the role of the folding umbrella of stable main oil pump, keeps main oil
The constant output of pump；
4, the utility model is provided with secondary pressure protection in hydraulic system, and system pressure protects the pressure of valve to be higher than pressure
The pressure 2Mpa of power stop valve, spray head blocking or hydraulic control component break down in high pressure water water outlet limiting condition,
When hydraulic system pressure being caused infinitely to rise, main oil pump stops pump oil, and then system pressure protects valve draining, plays duplicate protection
Systemic effect.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural representation of the energy saver for spraying water with high pressure described in the utility model specific embodiment
Figure；
Fig. 2 is the hydraulic principle figure of variable pump in Fig. 1, water pump drive motor and control valve；
Appended drawing reference:
1- fuel tank；3- variable pump；31- main oil pump；The input port 311-；32- swash plate；33- main oil pump compensating cylinder；34- swash plate
Drive cylinder；35- pressure shut-off valve；36- load-sensitive proportioning valve；4- water pump drive motor；5- control valve；The driving of 51- water pump
Motor switch valve；52- system pressure protects valve；53- speed governing valve；54- load feedback pressure oil port；55- oil inlet；6- system pressure
Power table；7- high-pressure hydraulic pump；8- high pressure water control valve；81- first interface；82- second interface；83- third interface；84- is spare to be connect
Mouthful；9- high-pressure water pressure table；The right spray boom of 10-；The left spray boom of 11-；Spray boom is set in 12-；Spray boom after 13-.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality
The ordinary meaning understood with novel one of ordinary skill in the art.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.The meaning of " plurality " is two in the description of the present invention,
More than, unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
As shown in Figure 1, a kind of energy saver for spraying water with high pressure provided by the utility model, including forming circuit
Variable pump 3 and control valve 5, the output end of the control valve 5 connect water pump drive motor 4, and the output end of water pump drive motor 4 connects
High-pressure hydraulic pump 7 is connect, the outlet of high-pressure hydraulic pump 7 is arranged high pressure water control valve 8, is arranged between high-pressure hydraulic pump 7 and high pressure water control valve 8
There is high-pressure water pressure table 9, high-pressure water pressure table 9 is for comparing, the actual loading and hydraulic system of high-pressure hydraulic pump under different operating conditions
The fiducial value of pressure, one does calibration reference for pressure feedback；Two do calibration reference to manually adjust, and set on high pressure water control valve 8
It sets there are four interface, including first interface 81, second interface 82, third interface 83 and spare interface 84, first interface 81 connects
The right spray boom 10 of sweeper sets spray boom 12 in, and the left spray boom 11 that second interface 82 connects sweeper sets spray boom 12, third in
Interface 83 connects the rear spray boom 13 of sweeper, realizes that right spray boom sets spraying water with high pressure for spray boom in when first interface 81 must be electric,
When second interface 82 it is electric when realize left spray boom and in set spraying water with high pressure for spray boom, when first interface 81 and second interface 82 simultaneously
It is electric when realize it is left and right and in set spraying water with high pressure for spray boom, spare interface 84 is used for other purposes.
As shown in Fig. 2, oil inlet, the oil outlet of the water pump drive motor 4 are separately connected control valve 5 and fuel tank 1, it is described
Control valve 5 includes water pump drive motor switch valve 51 and load feedback pressure oil port LS54, the water pump drive motor switch valve
51 are arranged in the oil inlet of the water pump drive motor 5, between the water pump drive motor switch valve 51 and water pump drive motor 4
It is provided with speed governing valve 53, the variable pump 3 includes main oil pump 31, and the inlet port of the main oil pump 31 is connect with the fuel tank 1, institute
It states and is provided with swash plate 32 on main oil pump 31, one end of the swash plate 32 is connected with swash plate drive cylinder 34, the swash plate driving oil
Load-sensitive proportioning valve 36 is provided between cylinder 34 and load feedback pressure oil port 54, the oil outlet of the main oil pump 31 passes through interior
Portion's guide oil connects the oil inlet of the load-sensitive proportioning valve 36.
Further, system pressure protection valve 52 is additionally provided in the control valve 5, the system pressure protection valve 52 is set
It sets between the fuel tank 1 and water pump drive motor switch valve 51.
Further, it is provided with pressure shut-off valve 35 between the load-sensitive proportioning valve 36 and swash plate drive cylinder 34,
After realizing that 31 pressure of main oil pump reaches set value by the setting to pressure shut-off valve 35, swash plate 32 swings to minimum position,
To realize the zero delivery output of main oil pump, the effect of entire hydraulic system is protected.
Further, variable pump 3 further includes having main oil pump compensating cylinder 33, and the main oil pump compensating cylinder 33 and the load are quick
Sense proportioning valve 36 and pressure shut-off valve 35 are all connected with, and the piston rod of the main oil pump compensating cylinder 33 connects the another of the swash plate 32
The different operating condition variable output actions of stable main oil pump 31 are played in one end, keep the constant output of main oil pump 31.
Further, system pressure table 6 is provided on the control valve 5 and the load feedback circuit of variable pump 3.
Specific working principle are as follows: by maximum working pressure (the General System pressure of system pressure protection valve setting system
Protect the pressure setting of valve 2Mpa more slightly higher than pump pressure stop valve), its spool moves to left when water pump drive motor switch valve obtains electric, main
Fuel pump outlet hydraulic oil enters water pump drive motor, the rotation of water pump drive motor, and the openings of sizes of speed governing valve determines that water pump drives
The revolving speed of dynamic motor, it is fast to high-pressure hydraulic pump revolving speed, it is desirable to which that corresponding spray boom hydraulic pressure is high, then tunes up speed governing valve, and vice versa, needs
It will manually (being set according to the requirement to end hydraulic pressure).Main oil pump: in maximum at the swash plate of initial position main oil pump
Output position, swash plate maximum position oblique angle tilt, and water pump drive motor switch valve obtains electric signal and pushes a spool left side in control valve
The oil outlet for moving pump pumps out high pressure oil, and the high pressure oil of main oil pump enters water pump drive motor, and water pump drive motor is due to four kinds of works
The pressure of the high pressure water demand of condition, the corresponding water pump of every kind of high pressure water is different, this is just needed under each operating condition, and main oil pump turns
Speed output is different.The load feedback of water pump has arrived in water pump drive motor, and the pressure oil of water pump drive motor passes through control
In s mouthfuls of l (load feedback pressure oil port) feedback to the load-sensitive proportioning valve of main oil pump of valve processed, load-sensitive proportioning valve is worked as
Pressure oil comes out from main oil pump, goes to water pump drive motor, the load l s that a part to load-sensitive proportioning valve and feedback come
Mouth compares, and when loading bigger, s mouthfuls of oil of l pass through internal duct oil return box, the valve of pressure oil promotion load-sensitive proportioning valve
Core moves to right, and guide oil pushes the right movement of swash plate drive cylinder by load-sensitive proportioning valve to pressure shut-off valve, and discharge capacity reduces,
Power loss is reduced, main oil pump compensating cylinder plays stable main oil pump difference operating condition variable output action, keeps the constant of main oil pump
Output.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (9)
1. a kind of energy saver for spraying water with high pressure, it is characterised in that: variable pump and control valve including forming circuit, it is described
The output end of control valve connects water pump drive motor, and the output end of the water pump drive motor connects high-pressure hydraulic pump, the high pressure
The output end of water pump is provided with high pressure water control valve, be provided on the high pressure water control valve first interface, second interface and
Third interface, the first interface connect right spray boom and in set spray boom, the second interface connect left spray boom and it is described in set spray
Bar, spray boom after the third interface connection.
2. a kind of energy saver for spraying water with high pressure according to claim 1, it is characterised in that: when the first interface
It is electric when realize the right spray boom and in set spraying water with high pressure for spray boom, realized when the second interface obtains electric the left spray boom and
In set spraying water with high pressure for spray boom, when the first interface and second interface simultaneously it is electric when realize it is described left and right and in set spray
Bar sprays water with high pressure.
3. a kind of energy saver for spraying water with high pressure according to claim 2, it is characterised in that: the high-pressure hydraulic pump with
High-pressure water pressure table is provided on pipeline between high pressure water control valve.
4. a kind of energy saver for spraying water with high pressure according to claim 3, it is characterised in that: the water pump drives horse
Oil inlet, the oil outlet reached is separately connected the control valve and fuel tank, the control valve include water pump drive motor switch valve and
Load feedback pressure oil port LS, the oil inlet of the water pump drive motor is arranged in the water pump drive motor switch valve, described
Speed governing valve is provided between water pump drive motor switch valve and water pump drive motor, the variable pump includes main oil pump, the master
The inlet port of oil pump is connect with the fuel tank, and swash plate is provided on the main oil pump, and one end of the swash plate is connected with swash plate drive
Dynamic oil cylinder, is provided with load-sensitive proportioning valve, the main oil between the swash plate drive cylinder and load feedback pressure oil port LS
The oil outlet of pump connects the oil inlet of the load-sensitive proportioning valve by internal pilot oil.
5. a kind of energy saver for spraying water with high pressure according to claim 4, it is characterised in that: in the control valve also
Be provided with system pressure protection valve, system pressure protection valve setting the fuel tank and water pump drive motor switch valve it
Between.
6. a kind of energy saver for spraying water with high pressure according to claim 5, it is characterised in that: the load-sensitive ratio
It is provided with pressure shut-off valve between example valve and swash plate drive cylinder, realizes that main oil pump pressure reaches by the setting to pressure shut-off valve
To after set value, swash plate swings to minimum position, to realize that main oil pump zero delivery exports, protects the effect of entire hydraulic system
Fruit.
7. a kind of energy saver for spraying water with high pressure according to claim 6, it is characterised in that: the variable pump also wraps
Main oil pump compensating cylinder is included, the main oil pump compensating cylinder is all connected with the load-sensitive proportioning valve and pressure shut-off valve, institute
The piston rod for stating main oil pump compensating cylinder connects the other end of the swash plate, and the different operating condition variables output for playing stable main oil pump is made
With keeping the constant output of main oil pump.
8. a kind of energy saver for spraying water with high pressure according to claim 7, it is characterised in that: the control valve and change
It measures and is provided with system pressure table on the load feedback circuit of pump.
9. a kind of energy saver for spraying water with high pressure according to claim 1-8, it is characterised in that: the height
Spare interface is additionally provided on pressure water control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821734769.6U CN209194415U (en) | 2018-10-24 | 2018-10-24 | A kind of energy saver for spraying water with high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821734769.6U CN209194415U (en) | 2018-10-24 | 2018-10-24 | A kind of energy saver for spraying water with high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209194415U true CN209194415U (en) | 2019-08-02 |
Family
ID=67409021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821734769.6U Expired - Fee Related CN209194415U (en) | 2018-10-24 | 2018-10-24 | A kind of energy saver for spraying water with high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209194415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979961A (en) * | 2020-08-31 | 2020-11-24 | 长沙中联重科环境产业有限公司 | Control method and system for double-water-pump washing and sweeping vehicle |
| CN113357217A (en) * | 2021-08-10 | 2021-09-07 | 徐州徐工环境技术有限公司 | Multifunctional waterway driving system suitable for tunnel cleaning working condition |
-
2018
- 2018-10-24 CN CN201821734769.6U patent/CN209194415U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979961A (en) * | 2020-08-31 | 2020-11-24 | 长沙中联重科环境产业有限公司 | Control method and system for double-water-pump washing and sweeping vehicle |
| CN111979961B (en) * | 2020-08-31 | 2022-05-17 | 长沙中联重科环境产业有限公司 | Control method and system for double-water-pump washing and sweeping vehicle |
| CN113357217A (en) * | 2021-08-10 | 2021-09-07 | 徐州徐工环境技术有限公司 | Multifunctional waterway driving system suitable for tunnel cleaning working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225000 No. 8 Weichai Avenue, Hangjiang Automobile Industrial Park, Yangzhou City, Jiangsu Province Patentee after: Weichai (Yangzhou) Special Vehicle Co.,Ltd. Address before: 225000 No. 8 Weichai Avenue, Hangjiang Automobile Industrial Park, Yangzhou City, Jiangsu Province Patentee before: YANGZHOU SHENGDA SPECIAL VEHICLES Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 |