CN109114056A - One kind one pumps multi-cylinder energy-saving hydraulic device - Google Patents
One kind one pumps multi-cylinder energy-saving hydraulic device Download PDFInfo
- Publication number
- CN109114056A CN109114056A CN201811221548.3A CN201811221548A CN109114056A CN 109114056 A CN109114056 A CN 109114056A CN 201811221548 A CN201811221548 A CN 201811221548A CN 109114056 A CN109114056 A CN 109114056A
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- China
- Prior art keywords
- cylinder
- valve
- hydraulic
- energy
- actuating cylinder
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 239000000243 solution Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000002268 wool Anatomy 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a pump multi-cylinder energy-saving hydraulic devices, by the movable part of an entirety, while connecting an actuating cylinder and more slave cylinders, drive synchronous flexible of slave cylinder to realize actuating cylinder；Meanwhile active oil circuit is set, actuating cylinder is connected to hydraulic circuit, realizes actuating cylinder extension and contraction control；Meanwhile on driven oil circuit, multiple slave cylinder modules are set, by prefill valve, during realizing driven stretch, supplement and discharge storage, the process to slave cylinder inner fluid hardly consume energy, realize energy-saving telescopic；When all oil cylinders in place after, by pressure maintaining pipeline to the micro fluid injection of slave cylinder realize pressure maintaining, realize that big pressure acts on movable part.Which solve the problems that in the prior art, Multi-cylinder system operational speed is slow, liquid feeding pipeline burden is heavy.
Description
Technical field
The invention belongs to fluid pressure drive device technical field, it is specifically related to a kind of energy working at high speed, and heavy wool cylinder pressure is equal
One pump multi-cylinder energy-saving hydraulic device of weighing apparatus pressure.
Background technique
In the industrial production, especially in the industrial equipments such as injection molding, pressure and stress to workpiece it is equal
Weigh performance, all has more strict requirements.
Such as in Shooting Technique, generally requires and seek the clamping pressure value for reaching mold design, just can guarantee the sealing of mold
Performance realizes the production of high quality injecting products.
And due to the limitation of oil hydraulic system performance, high pressure is generally realized by multiple oil cylinder proportionality actions, and Multi-cylinder is equal
Weighing apparatus layout, there are following technological deficiencies: firstly, oil cylinder is flexible, needed for oil liquid amount it is big, the feed flow of big flow need to be set
The corollary apparatus such as pipeline, system cost are higher；Secondly, Multi-cylinder is mobile, in the certain situation of flow, oil cylinder quantity is inversely proportional to
Movement speed causes the equipment speed of service low.
In addition, Multi-cylinder is arranged, there is a certain error for each oil feed line, leads to each oil cylinder working-pressure and non-fully phase
Together, the problem for easily leading to pressure unevenness is unable to satisfy high-accuracy molding demand.
Summary of the invention
The present invention is intended to provide one kind one pumps multi-cylinder energy-saving hydraulic device, and to solve existing Multi-cylinder hydraulic device, operation
The problem that speed is slow, liquid feeding pipeline burden is heavy.
Concrete scheme is as follows: one kind one pumps multi-cylinder energy-saving hydraulic device, including a hydraulic circuit, which has liquid
Press pump, oil feed line and oil return line；Further include active oil circuit and driven oil circuit:
The active oil circuit includes double-acting actuating cylinder and the first reversal valve, which first is commutated by this
Valve accesses the hydraulic circuit；
The driven oil circuit includes pilot line, pressure maintaining pipeline and one second reversal valve, the pilot line and pressure maintaining pipe
The hydraulic circuit is accessed by second reversal valve in road；
The driven oil circuit further includes multiple groups slave cylinder module, the slave cylinder module include sequentially connected fuel reserve tank,
Prefill valve and the slave cylinder of single-acting；The pressure maintaining pipeline is connected to the slave cylinder, and the pilot line is conducted to this and fills
The pilot port of liquid valve；
The actuating cylinder and slave cylinder are connected to a movable part, and the actuating cylinder is set in each slave cylinder
Between position.
The further technical solution of the present invention is that the slave cylinder module further includes a ball valve, which is set to the oil storage
Between case and prefill valve.
The further technical solution of the present invention is that the pressure maintaining pipeline is conducted to the slave cylinder by a check valve.
The further technical solution of the present invention is, the hydraulic pump include a motor and one connect with the motor drive it is double
Join vane pump, the head and the tail both ends of the oil feed line are respectively arranged at the liquid outlet of two pair vane pumps.
The further technical solution of the present invention is that the retraction port of the actuating cylinder passes through piping connection to first commutation
Valve, and the stretching port of the actuating cylinder by a hydraulic control one-way valve piping connection to first reversal valve, and the retraction port
On pipeline connection to the hydraulic control one-way valve pilot port.
The further technical solution of the present invention is that the stretching port of the actuating cylinder also passes through check valve and is connected to pressure maintaining pipe
Road.
The utility model has the advantages that pump multi-cylinder energy-saving hydraulic device of the invention, by the movable part of an entirety, simultaneously
An actuating cylinder and more slave cylinders are connected, drives slave cylinder is synchronous to stretch to realize actuating cylinder；Meanwhile being arranged
Actuating cylinder is connected to hydraulic circuit by active oil circuit, realizes actuating cylinder extension and contraction control；Meanwhile on driven oil circuit, if
Set multiple slave cylinder modules, by prefill valve, realize it is driven it is flexible during, to the supplement of slave cylinder inner fluid with
And discharge storage, the process hardly consume energy, realize energy-saving telescopic；When all oil cylinders in place after, by pressure maintaining pipeline pair
Pressure maintaining is realized in the micro fluid injection of slave cylinder, realizes that big pressure acts on movable part.Which solve in the prior art, Multi-cylinder system
The problem that the speed of service is slow, liquid feeding pipeline burden is heavy.
In further technical solution, the stretching port of actuating cylinder is also connected to pressure maintaining pipeline, it is ensured that each
Oil cylinder is connected to unified pipeline, and oil pressure height is consistent, realizes the balanced pressure of high precision.
Detailed description of the invention
Fig. 1 shows the present invention one and pumps multi-cylinder energy-saving hydraulic device hydraulic schematic diagram.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.In figure
Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in connection with fig. 1, this embodiment offers one kind one pump multi-cylinder energy-saving hydraulic device, including a hydraulic circuit 10,
One active oil circuit 20 and a driven oil circuit 30.
In this embodiment, which includes the oil feed line and a hydraulic pump of annular, the hydraulic pump packet
Include a threephase asynchronous machine and the pair vane pump that connect with the motor drive, the pair vane pump have a liquid sucting port with
And two liquid outlets, the liquid sucting port piping connection a to hydraulic oil container, then the head and the tail both ends of the oil feed line be respectively arranged on two should
At the liquid outlet of pair vane pump, to realize the feed flow of stability and high efficiency；The hydraulic circuit 10 also has one to be conducted to hydraulic oil container
Oil return line, to realize pressure release oil extraction.
The active oil circuit 20 includes the first reversal valve of electro hydraulic valve 1 of a double-acting actuating cylinder 60 and two four-ways,
The actuating cylinder 60 accesses the hydraulic circuit 10 by first reversal valve 1, specific:
The oiling port of 60 bottom of actuating cylinder is defined to stretch out port, with pushing piston-rod, this is actively oily for oiling
The oiling port at 60 top of cylinder is retraction port, and oiling is to withdraw piston rod；
The retraction port of the actuating cylinder 60 pass through piping connection to first reversal valve 1 one of executive component oil pocket
Port, and the port of stretching out of the actuating cylinder 60 passes through the execution of 16 piping connection of a hydraulic control one-way valve to first reversal valve 1
The another port of element oil pocket；Meanwhile the pipeline connection on the retraction port is to the pilot port of the hydraulic control one-way valve 16, with
In retraction process, the oil circuit for stretching out port is opened, realizes discharge hydraulic oil.
The driven oil circuit 30 includes pilot line, pressure maintaining pipeline and one second reversal valve 2, the pilot line and pressure maintaining
Pipeline accesses the hydraulic circuit by second reversal valve 2；
Meanwhile the driven oil circuit 30 further includes multiple groups slave cylinder module, each slave cylinder module includes successively
Fuel reserve tank, prefill valve 19 and the slave cylinder 6 of single-acting of connection, meanwhile, which further includes a ball valve 21,
The ball valve 21 is set between the fuel reserve tank and prefill valve；The pressure maintaining pipeline is connected to the slave cylinder 60 by check valve individual event
Pouring orifice, and the pilot line is conducted to the pilot port of the prefill valve 19, to control the unlatching and closing of the prefill valve 19.
Piston rod is connected on integrated movable part by the actuating cylinder 60 and each slave cylinder 6 of the embodiment
(not shown), and the actuating cylinder 60 is set to each slave cylinder middle position, and then realizes 60 energy band of actuating cylinder
Move the flexible of each synchronization of slave cylinder 6；Meanwhile active oil circuit 20 is set, and actuating cylinder 60 is connected to hydraulic circuit 10, it is real
60 extension and contraction control of actuating cylinder is showed；Meanwhile on driven oil circuit 30, multiple slave cylinder modules are set, prefill valve is passed through
19, during realizing driven stretch, supplement and discharge storage, the process to slave cylinder inner fluid hardly consume energy
Amount, realizes energy-saving telescopic；When all oil cylinders in place after, by pressure maintaining pipeline to the micro fluid injection of slave cylinder realize pressure maintaining, realize
Big pressure acts on movable part.Which solve in the prior art, Multi-cylinder system operational speed is slow, liquid feeding pipeline bears asking for weight
Topic.
To allow actuating cylinder 60 and each slave cylinder 6 pressure having the same, the extension end of the actuating cylinder 60
Mouth is also connected to pressure maintaining pipeline by check valve, makes the oil-free pressure in port that bounces back, and stretches out port by pressure maintaining pipeline and injects high pressure
Hydraulic oil, it is ensured that each oil cylinder is connected to unified pipeline, and oil pressure height is consistent, realizes the balanced pressure of high precision.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (6)
1. one kind one pumps multi-cylinder energy-saving hydraulic device, an including hydraulic circuit, the hydraulic circuit have hydraulic pump, oil feed line with
And oil return line；It is characterized in that, further including active oil circuit and driven oil circuit:
The active oil circuit includes double-acting actuating cylinder and the first reversal valve, which is connect by first reversal valve
Enter the hydraulic circuit；
The driven oil circuit includes pilot line, pressure maintaining pipeline and one second reversal valve, and the pilot line and pressure maintaining pipeline are logical
It crosses second reversal valve and accesses the hydraulic circuit；
The driven oil circuit further includes multiple groups slave cylinder module, which includes sequentially connected fuel reserve tank, filling liquid
Valve and the slave cylinder of single-acting；The pressure maintaining pipeline is connected to the slave cylinder, and the pilot line is conducted to the prefill valve
Pilot port；
The actuating cylinder and slave cylinder are connected to a movable part, and the actuating cylinder is set to each slave cylinder interposition
It sets.
2. pump multi-cylinder energy-saving hydraulic device according to claim 1, it is characterised in that: the slave cylinder module further includes
One ball valve, the ball valve are set between the fuel reserve tank and prefill valve.
3. pump multi-cylinder energy-saving hydraulic device according to claim 1, it is characterised in that: the pressure maintaining pipeline is unidirectional by one
Valve is conducted to the slave cylinder.
4. it is according to claim 1 one pump multi-cylinder energy-saving hydraulic device, it is characterised in that: the hydraulic pump include a motor with
And the pair vane pump that is connect with the motor drive, the head and the tail both ends of the oil feed line are respectively arranged on two pair vane pumps
At liquid outlet.
5. pump multi-cylinder energy-saving hydraulic device according to claim 1, it is characterised in that: the retraction port of the actuating cylinder
By piping connection to first reversal valve, and the stretching port of the actuating cylinder extremely should by a hydraulic control one-way valve piping connection
First reversal valve, and the pipeline connection on the retraction port is to the pilot port of the hydraulic control one-way valve.
6. pump multi-cylinder energy-saving hydraulic device according to claim 1, it is characterised in that: the stretching port of the actuating cylinder
Pressure maintaining pipeline is also connected to by check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811221548.3A CN109114056A (en) | 2018-10-19 | 2018-10-19 | One kind one pumps multi-cylinder energy-saving hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811221548.3A CN109114056A (en) | 2018-10-19 | 2018-10-19 | One kind one pumps multi-cylinder energy-saving hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109114056A true CN109114056A (en) | 2019-01-01 |
Family
ID=64854737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811221548.3A Pending CN109114056A (en) | 2018-10-19 | 2018-10-19 | One kind one pumps multi-cylinder energy-saving hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109114056A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709155Y (en) * | 2004-06-28 | 2005-07-13 | 天津市天锻压力机有限公司 | Hydraulic cushion control device having four-corner pressure regulating function |
| CN2726701Y (en) * | 2004-09-03 | 2005-09-21 | 莫魁 | Hydraulic rapid-compressing apparatus of box filter press |
| CN202379627U (en) * | 2011-12-19 | 2012-08-15 | 徐州重型机械有限公司 | Boom telescoping hydraulic control system and crane with same |
| CN202483975U (en) * | 2012-03-12 | 2012-10-10 | 常州市第一橡塑设备有限公司 | Hydraulic system |
| CN202846939U (en) * | 2012-08-24 | 2013-04-03 | 合肥合锻机床股份有限公司 | High-speed hydraulic machine dynamic stepping control system |
| CN203430894U (en) * | 2013-07-23 | 2014-02-12 | 徐州重型机械有限公司 | Double hydraulic cylinder synchronous control system and engineering machinery applying same |
| CN106762886A (en) * | 2016-12-05 | 2017-05-31 | 重集团大连设计研究院有限公司 | Novel numerical control hydraulic pressure mattress system |
| CN206830554U (en) * | 2017-06-12 | 2018-01-02 | 中冶东方工程技术有限公司 | Align machine hydraulic system and apply its straightener |
| CN207715450U (en) * | 2017-12-26 | 2018-08-10 | 无锡锡锻机床有限公司 | Lower-moving type bender hydraulic system |
| CN108591145A (en) * | 2018-04-14 | 2018-09-28 | 晋江市火炬油压机械有限公司 | A kind of hydraulic system applied in the small foaming machines of wall board type EVA |
| CN108638568A (en) * | 2018-04-25 | 2018-10-12 | 天津市天锻压力机有限公司 | A kind of energy-conserving hydraulic for hydraulic press pads control system |
| CN209100376U (en) * | 2018-10-19 | 2019-07-12 | 吉特利环保科技（厦门）有限公司 | One kind one pumps multi-cylinder energy-saving hydraulic device |
-
2018
- 2018-10-19 CN CN201811221548.3A patent/CN109114056A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709155Y (en) * | 2004-06-28 | 2005-07-13 | 天津市天锻压力机有限公司 | Hydraulic cushion control device having four-corner pressure regulating function |
| CN2726701Y (en) * | 2004-09-03 | 2005-09-21 | 莫魁 | Hydraulic rapid-compressing apparatus of box filter press |
| CN202379627U (en) * | 2011-12-19 | 2012-08-15 | 徐州重型机械有限公司 | Boom telescoping hydraulic control system and crane with same |
| CN202483975U (en) * | 2012-03-12 | 2012-10-10 | 常州市第一橡塑设备有限公司 | Hydraulic system |
| CN202846939U (en) * | 2012-08-24 | 2013-04-03 | 合肥合锻机床股份有限公司 | High-speed hydraulic machine dynamic stepping control system |
| CN203430894U (en) * | 2013-07-23 | 2014-02-12 | 徐州重型机械有限公司 | Double hydraulic cylinder synchronous control system and engineering machinery applying same |
| CN106762886A (en) * | 2016-12-05 | 2017-05-31 | 重集团大连设计研究院有限公司 | Novel numerical control hydraulic pressure mattress system |
| CN206830554U (en) * | 2017-06-12 | 2018-01-02 | 中冶东方工程技术有限公司 | Align machine hydraulic system and apply its straightener |
| CN207715450U (en) * | 2017-12-26 | 2018-08-10 | 无锡锡锻机床有限公司 | Lower-moving type bender hydraulic system |
| CN108591145A (en) * | 2018-04-14 | 2018-09-28 | 晋江市火炬油压机械有限公司 | A kind of hydraulic system applied in the small foaming machines of wall board type EVA |
| CN108638568A (en) * | 2018-04-25 | 2018-10-12 | 天津市天锻压力机有限公司 | A kind of energy-conserving hydraulic for hydraulic press pads control system |
| CN209100376U (en) * | 2018-10-19 | 2019-07-12 | 吉特利环保科技（厦门）有限公司 | One kind one pumps multi-cylinder energy-saving hydraulic device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| CB02 | Change of applicant information |
Address after: No. 523, Ji'an Road, Tong'an industrial concentration zone, Tong'an District, Xiamen City, Fujian Province, 361000 Applicant after: Far East Zhongqian (Xiamen) Technology Group Co.,Ltd. Address before: No. 523, Ji'an Road, Tong'an industrial concentration zone, Tong'an District, Xiamen City, Fujian Province, 361000 Applicant before: GEOTEGRITY ECO PACK (XIAMEN) Co.,Ltd. |
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