CN108150463A - Integral electric hydraulic system - Google Patents
Integral electric hydraulic system Download PDFInfo
- Publication number
- CN108150463A CN108150463A CN201810101205.7A CN201810101205A CN108150463A CN 108150463 A CN108150463 A CN 108150463A CN 201810101205 A CN201810101205 A CN 201810101205A CN 108150463 A CN108150463 A CN 108150463A
- Authority
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- China
- Prior art keywords
- pump case
- valve
- pump
- check valve
- steel ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 47
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 29
- 238000010992 reflux Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of electro-hydraulic systems, disclose a kind of integral electric hydraulic system, and including pump case (3), motor (2), valve plate are fixed in pump case (3)（4）, oil cylinder (1), pump case (3) is interior to be equipped with gear pump (10)；Motor (2), valve plate（4）It is fixed in pump case (3) after being connected with each other with gear pump (10)；Pump case (3) internal storage hydraulic oil, pump case (3) is equipped with the check valve two (8) for controlling oil circuit break-make and makes the hand-operated valve (11) of check valve two (8) opening for acting on check valve two (8), and overflow valve (19) and the check valve one for preventing gear pump oil return are additionally provided in pump case (3)（6）.The present invention integrates motor and hydraulic actuating mechanism, the volume of whole system is effectively reduced, reduces cost, because whole system does not have any independent pipeline and connector connection, so as to avoid hydraulic leak and pollution as far as possible, make hydraulic system relatively reliable, stable.
Description
Technical field
The present invention relates to a kind of electro-hydraulic systems more particularly to a kind of by electric hydaulic power unit, control unit
And executing agency is integrated into an entirety to realize the integral electric hydraulic system of lifting.
Background technology
At present, with advances in technology, since logistics haulage equipment is more and more universal in the application of industry-by-industry, at present
The logistics haulage equipment hoisting system of market batch application is broadly divided into manual and electronic two major class, manual pump sys
It is simple and compact for structure, it is cheap, but caused high effort for by manual operation manual pump merely, so load-carrying cannot be too big,
Efficiency is very low；And the hydraulic lifting system of the electronic logistics haulage equipment of tradition all uses power unit, executing agency and control
The mode that system separation processed is installed respectively is laid out, so as to cause entire logistics haulage equipment volume is big, price is high, technology
It is complicated, it is difficult to popularize in an all-round way, in this background, be badly in need of wanting it is a can combine manually and electronic two kinds of technical advantages it is new
Type hydraulic lifting system, in the case where not being added to this and vehicle volume significantly, with electronic substitution manpower, to reduce labor
Fatigue resistance is improved labor efficiency.
Invention content
The present invention can only drive merely for manual pump in the prior art by manpower, and electronic pump volume is big, of high cost
Shortcoming provides a kind of integral electric hydraulic system.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：
Integral electric hydraulic system, including pump case, pump case internal storage hydraulic oil is fixed with electricity in pump case
Machine, valve plate, oil cylinder, pump case is interior to be equipped with gear pump；Motor, valve plate and gear pump are fixed in pump case after being connected with each other and pump
Housing is equipped with the check valve two for controlling oil circuit break-make and makes the hand-operated valve of its opening, pump for acting on check valve two
Overflow valve and the check valve one for preventing gear pump oil return are additionally provided on housing.
By the way that by oil cylinder, pump case is fixed together, a monoblock type valve body is formed, then motor, gear pump are integrated in
On the monoblock type valve body, so that being integrated into an entirety between the executing agency of the system and power unit, greatly contract
The small volume of whole system, makes whole system structure compacter.Pump case body side surface is equipped with spout hole, is equipped in spout hole
Overflow valve.Whole system is protected by setting overflow valve in pump case, can ensure entire hydraulic system to avoid overload
Reliability and safety.
Preferably, check valve two includes the valve body one connected with pump case oil circuit end, sealing spiral shell is equipped in valve body one
The big end of sealing screw and the hydraulic oil unicom of oil cylinder are followed closely, the stepped hole rank connected with valve body one is equipped in the middle part of sealing screw
It is equipped in terraced hole and is axially reciprocal movement and can be cased with making on poppet valve core with forming the poppet valve core sealed at the ladder of stepped hole
For poppet valve core always to the spring one of movement at the ladder of stepped hole, poppet valve core end is fixed with steel ball one.The check valve two utilizes
Valve body one, poppet valve core realize sealing, and spring provides pretightning force, form check valve assembly, simple and reliable.
Preferably, equipped with the check valve one for preventing gear pump oil return, check valve one includes adjusting screw, two steel of spring
Ball two, check valve one ensure that the hydraulic oil inside oil cylinder can not be flowed back by the inlet port of gear pump.
Preferably, hand-operated valve includes the seal receptacle being fixed in pump case, axial reciprocating fortune can be done by being equipped in seal receptacle
The push rod of steel ball one is moved and be used to push, the spring three for resetting push rod is cased on push rod.With the open-top steel ball of push rod, cone is pushed
Spool realizes the commutation of hydraulic oil in check valve two so that hydraulic oil is back to from oil cylinder in pump case, realizes that cargo declines tool
Have the advantages that simple in structure, commutation is convenient.
Preferably, push rod end passes through seal receptacle and contacted with position control shaft, position control shaft is connected to pump case
On, the linear motion of push rod is realized by turned position control shaft, so as to fulfill the operation to hand-operated valve, controls check valve two
Unlatching.
Preferably, overflow valve includes the adjusting screw being fixed in pump case, the steel ball seat being connect with adjusting screw,
Steel ball seat is equipped with the steel ball three that sealing can be formed at spout hole, and being equipped between adjusting screw and steel ball seat makes steel ball three begin
All morning is to the spring four at the sealing of spout hole.By setting adjusting screw in overflow valve, oil pressure relief can be adjusted, with
Just it is suitable for requirement of the different cargos for different pressures system.
The present invention has significant technique effect as a result of above technical scheme：
The present invention is ensureing low cost in the case where not being added to this and vehicle volume significantly, with electronic substitution people
Power to reduce labor intensity, is improved labor efficiency.Oil cylinder and valve plate are integrated simultaneously, reduce the body of whole system
Product, reduces cost, because whole system does not have any pipeline to be connected with connector, also avoids hydraulic leak and dirt as far as possible
Dye, makes whole system more reliable and more stable.
Description of the drawings
Fig. 1 is the stereogram one of the present invention；
Fig. 2 is the stereogram two of the present invention；
Fig. 3 is the stereogram three of the present invention；
Fig. 4 is the explosive view of the present invention；
The toponym that each number designation is referred in attached drawing is as follows：1_ oil cylinders, 2_ motors, 3_ pump cases, 4_ valve plates 5_
Position control shaft, 6_ check valves one, 7_ adjusting screws, 8_ check valves two, 9_ bolts, 10_ gear pumps, 11_ hand-operated valves, 12_ are close
Seal seat, 13_ sealing rings, 14_ springs three, 15_ springs two, 16_ steel balls two, 17_ springs four, 18_ steel ball seats, 19_ overflow valves,
20_ sealing rings two, 21_ springs one, 22_ poppet valve cores, 23_ sealing screws, one 25_ sealing rings three of 24_ steel balls, 28_ valve bodies one,
29_ push rods, 30_ adjusting screws, 31_ steel balls three.
Specific embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Integral electric hydraulic system, as Figure 1-Figure 4, including pump case (3), valve plate (4) and oil cylinder (1) pass through
Bolt is fixed in pump case (3)；Motor (2) and gear pump (10) are bolted on valve plate (4)；Hydraulic oil is stored
It is internal in pump case (3).
Motor (2), valve plate (4) are bolted rear profit with gear pump (10) and are fixed by bolts in pump case (3),
Gear pump (10) is immersed in inside hydraulic oil, and the hydraulic oil that gear pump (10) is drawn onto passes through the internal oil circuit of valve plate (4) and pump case
(3) internal oil circuit communicates, and forms an integral type power unit；Oil cylinder (1) is bolted in the integral type power
Integral type executing agency is formed on unit；The oil circuit of oil cylinder (1) and the oil communication of pump case (3), it is achieved thereby that oil cylinder
(1) connection of oil circuit and gear pump (10) oil circuit；It is connected between executing agency and power unit without any pipe fitting, so as to make
It obtains and is integrated into an entirety between the executing agency of the system and power unit, greatly reduce the volume of whole system, make
Whole system structure is compacter, also avoids hydraulic leak and pollution as far as possible, makes hydraulic system relatively reliable, stable.
Pump case (3) is equipped with the check valve two for communicating oil circuit break-make between control cylinder (1) and pump case (3)
(8) and for acting on the hand-operated valve (11) that check valve two (8) opens check valve two (8)；On side wall in pump case (3)
Equipped with the mounting hole for being respectively used to installation check valve two (8) and hand-operated valve (11), so that check valve two (8) and hand-operated valve
(11) it is positioned opposite, realize action of the hand-operated valve (11) to check valve two (8).
Wherein, check valve two (8) includes the valve body one (28) that is connected with pump case (3) oil circuit end, in valve body one (28)
Equipped with sealing screw (23), the big end of sealing screw (23) is connected with the hydraulic oil of oil cylinder, and small end is interior with pump case (3)
The high pressure oil connection in portion, it is internal with pump case (3) using the conical surface of sealing screw (23) small end between high pressure oil and low pressure oil
Hole contact sealing；The stepped hole connected with valve body one (28) is equipped in the middle part of sealing screw (23), being equipped in stepped hole can be axial
It moves back and forth and can be cased with making poppet valve core on (22) with the poppet valve core (22) of formation sealing at the ladder of stepped hole, poppet valve core
(22) always to the spring one (21) of movement at the ladder of stepped hole, the hole of sealing screw (23) and the conelet of poppet valve core (22)
Face forms sealing.
Pump case (3) is equipped with stair-stepping spout hole, is equipped with overflow valve (19) in spout hole, overflow valve (19) includes
The adjusting screw (7) being fixed in pump case (3), the steel ball seat (18) being connect with adjusting screw (7), steel ball seat are set on (18)
The steel ball three (31) of sealing can be formed at spout hole by having, and being equipped between adjusting screw (7) and steel ball seat (18) makes steel ball three
(31) always towards the spring four (17) at the sealing of spout hole.By adjusting adjusting screw (7), thus it is possible to vary be applied to steel
The pressure of spring four (17) on ball three (31), so as to change the hydraulic pressure of whole system.
Equipped with the check valve one (6) for preventing gear pump (10) oil return in pump case (3), check valve one (6) is including adjusting spiral shell
It follows closely (30), spring two (15), steel ball two (16), check valve one (6) ensure that the internal hydraulic oil of oil cylinder (1) can not pass through
The inlet port reflux of gear pump (10).
The present embodiment specific operation process：
When needing to realize pallet raising, motor (2) is opened, motor (2) drives gear pump (10) to rotate, so that
Hydraulic oil is flowed by valve plate (4) in check valve one (6) out of pump case (3), and hydraulic oil overcomes bullet in check valve one (6)
The open-top steel ball two (16) of elastic force of spring two (15) so that hydraulic oil is flowed into check valve two (8), is eventually arrived in oil cylinder (1)
Portion makes it jack up oil cylinder (1) inner prop stopper rod, realizes cargo lifting；When cargo lifting is to desired height, hydraulic pressure in oil cylinder (1)
Oil can reversely fasten poppet valve core (22), sealing screw (23) at sealing, realize locked pressurize, keep cargo height.
When needing to realize that pallet declines, push rod (29) is stirred by position control shaft (5) so that push rod (29) pushes
Steel ball one (24), so as to open-top poppet valve core (22), sealing screw (23) so that check valve two (8) is again turned on, at this time due to
Oil cylinder (1) interior pressure is big, thus after check valve two (8) opening, simultaneously because the effect of check valve one (6), oil cylinder (1) is interior
Hydraulic oil will not flow back into gear pump (10), so as to can pass through hand-operated valve (11) reversely flow back to pump case (3) oil storage it is empty
Between, so that oil cylinder (1) inner plunger declines, realize that cargo declines.Finally when cargo drops to bottom, pass through hand-operated valve
(11) spring three (14) in is so that push rod (29) return, entire hand-operated valve (11) are returned to original state.
On the other hand, when actual pressure is more than default pressure, the open-top steel ball three (31) of hydraulic oil overcomes spring
The elastic force of four (17) opens overflow valve (19), realizes overflow；It can be with regulating system simultaneously because being provided in overflow valve (19)
The adjusting screw (7) of pressure then can be realized by changing the position of adjusting screw (7) to critical needed for overflow valve (19)
The adjusting to whole system pressure is then realized in the adjusting of pressure.
In short, the foregoing is merely presently preferred embodiments of the present invention, all equalizations made according to scope of the present invention patent
Variation and modification should all belong to the covering scope of patent of the present invention.
Claims (6)
1. integral electric hydraulic system, it is characterised in that：Pump case (3) internal storage hydraulic oil, it is fixed in pump case (3)
There are motor (2), valve plate（4）, oil cylinder (1), pump case (3) is interior to be equipped with gear pump (10)；Motor (2), valve plate（4）And gear pump
(10) it is fixed in pump case (3) after being connected with each other；Pump case (3) is equipped with the check valve two (8) for controlling oil circuit break-make
With for acting on the hand-operated valve (11) that check valve two (8) opens it, it is additionally provided with overflow valve (19) in pump case (3) and is used for
Prevent the check valve one of gear pump oil return（6）.
2. integral electric hydraulic system according to claim 1, it is characterised in that：Check valve two (8) includes and pump case
The valve body one (28) of body (3) oil circuit end connection, valve body one (28) is interior to be equipped with sealing screw (23), sealing screw (23)
Big end is connected with the hydraulic oil inside oil cylinder, and the stepped hole connected with valve body one (28), rank are equipped in the middle part of sealing screw (23)
In terraced hole be equipped be axially reciprocal movement and can at the ladder of stepped hole formed sealing poppet valve core (22), poppet valve core (22)
On be cased with making poppet valve core (22) always to the spring one (21) moved at the ladder of stepped hole, poppet valve core (22) end is fixed with steel
Ball one（24）.
3. integral electric hydraulic system according to claim 2, it is characterised in that：Check valve one（6）Including adjusting spiral shell
Nail（30）, spring two（15）, steel ball two（16）, check valve one（6）It ensure that oil cylinder（1）Internal hydraulic oil can not pass through tooth
Wheel pump（10）Inlet port reflux.
4. integral electric hydraulic system according to claim 2, it is characterised in that：Hand-operated valve (11) is including being fixed on
Seal receptacle (12) in pump case (3), interior be equipped with of seal receptacle (12) can do axially reciprocating and for pushing steel ball one (24)
Push rod (29), the spring three (14) for resetting push rod (29) is cased on push rod (29).
5. integral electric hydraulic system according to claim 4, it is characterised in that：Push rod (29) end passes through seal receptacle
(12) and with position control shaft (5) it contacts, position control shaft (5) is connected in pump case (3).
6. integral electric hydraulic system according to claim 5, it is characterised in that：Overflow valve (19) is including being fixed on pump
Adjusting screw (7) on housing (3), the steel ball seat (18) being connect with adjusting screw (7), steel ball seat (18) is equipped with can be in overflow
The steel ball three (31) of sealing is formed at hole, being equipped between adjusting screw (7) and steel ball seat (18) makes steel ball three (31) direction always
Spring four (17) at the sealing of spout hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101205.7A CN108150463A (en) | 2018-02-01 | 2018-02-01 | Integral electric hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101205.7A CN108150463A (en) | 2018-02-01 | 2018-02-01 | Integral electric hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150463A true CN108150463A (en) | 2018-06-12 |
Family
ID=62459451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101205.7A Pending CN108150463A (en) | 2018-02-01 | 2018-02-01 | Integral electric hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150463A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842512A (en) * | 1994-08-04 | 1996-02-13 | Showa:Kk | Circuit structure of hydraulic system |
| CN102530767A (en) * | 2012-01-13 | 2012-07-04 | 温岭市鑫磊空压机有限公司 | Valve integrated oil pump device of electric hydraulic jack |
| CN102556884A (en) * | 2012-01-13 | 2012-07-11 | 温岭市鑫磊空压机有限公司 | Portable dual-purpose hydraulic jack for vehicles |
| CN203701052U (en) * | 2013-12-10 | 2014-07-09 | 扬州市富达液压机械有限公司 | Synchronous hydraulic integrated type hoist |
| CN203717491U (en) * | 2014-02-18 | 2014-07-16 | 无锡市德力流体科技有限公司 | Double suction port hydraulic power unit for lifting platform |
| CN203926176U (en) * | 2014-06-24 | 2014-11-05 | 扬州市飞龙气动液压设备有限公司 | Integrated hydraulic hoists |
| CN105883664A (en) * | 2016-04-15 | 2016-08-24 | 浙江中力机械有限公司 | Integrated hydraulic system |
| CN207961097U (en) * | 2018-02-01 | 2018-10-12 | 浙江微力电动科技有限公司 | Integral electric hydraulic system |
-
2018
- 2018-02-01 CN CN201810101205.7A patent/CN108150463A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842512A (en) * | 1994-08-04 | 1996-02-13 | Showa:Kk | Circuit structure of hydraulic system |
| CN102530767A (en) * | 2012-01-13 | 2012-07-04 | 温岭市鑫磊空压机有限公司 | Valve integrated oil pump device of electric hydraulic jack |
| CN102556884A (en) * | 2012-01-13 | 2012-07-11 | 温岭市鑫磊空压机有限公司 | Portable dual-purpose hydraulic jack for vehicles |
| CN203701052U (en) * | 2013-12-10 | 2014-07-09 | 扬州市富达液压机械有限公司 | Synchronous hydraulic integrated type hoist |
| CN203717491U (en) * | 2014-02-18 | 2014-07-16 | 无锡市德力流体科技有限公司 | Double suction port hydraulic power unit for lifting platform |
| CN203926176U (en) * | 2014-06-24 | 2014-11-05 | 扬州市飞龙气动液压设备有限公司 | Integrated hydraulic hoists |
| CN105883664A (en) * | 2016-04-15 | 2016-08-24 | 浙江中力机械有限公司 | Integrated hydraulic system |
| CN207961097U (en) * | 2018-02-01 | 2018-10-12 | 浙江微力电动科技有限公司 | Integral electric hydraulic system |
Non-Patent Citations (1)
| Title |
|---|
| 袁子荣: "液气压传动与控制", 31 December 2010, 重庆大学出版社, pages: 219 * |
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| SE01 | Entry into force of request for substantive examination | ||
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| CB02 | Change of applicant information |
Address after: 314000 No. 10, Yijiang Road, Chang'an Town (high tech Zone), Haining City, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Weili Electric Technology Co.,Ltd. Address before: 314000 No. 10, Yijiang Road, Chang'an Town (high tech Zone), Haining City, Jiaxing City, Zhejiang Province Applicant before: Zhejiang Microlift Electric Technology Co.,Ltd. |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240524 Address after: Room 220-189, Comprehensive Office Building, No. 222 Lvyin Road, Qiantang District, Hangzhou City, Zhejiang Province, 310020 Applicant after: Zhejiang Weili Intelligent Equipment Co.,Ltd. Country or region after: China Address before: 314000 No. 10, Yijiang Road, Chang'an Town (high tech Zone), Haining City, Jiaxing City, Zhejiang Province Applicant before: Zhejiang Weili Electric Technology Co.,Ltd. Country or region before: China |