CN108953279A - A kind of double formula synchronous hydraulic cylinders out of double piston-rod - Google Patents
A kind of double formula synchronous hydraulic cylinders out of double piston-rod Download PDFInfo
- Publication number
- CN108953279A CN108953279A CN201810955060.7A CN201810955060A CN108953279A CN 108953279 A CN108953279 A CN 108953279A CN 201810955060 A CN201810955060 A CN 201810955060A CN 108953279 A CN108953279 A CN 108953279A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- hydraulic
- piston
- rod
- lock
- 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
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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- 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
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention relates to a kind of double formula synchronous hydraulic cylinders out of double piston-rod, including integrated bi-directional hydraulic lock, the hydraulic cylinder body of one-way speed-regulating valve, the both ends of the hydraulic cylinder body are tightly connected drive end bearing bracket respectively, the hydraulic cylinder rod chamber with hydraulic fluid port is respectively formed at left and right sides of the inside of the hydraulic cylinder body, between adjacent hydraulic cylinder rodless cavity, the hydraulic cylinder rodless cavity for having hydraulic fluid port is formed in the inside of the hydraulic cylinder body, separated between each hydraulic cylinder rod chamber and hydraulic cylinder rodless cavity by hydraulic cylinder seam allowance, piston is set inside each hydraulic cylinder rod chamber, piston rod is connected on the piston.It is the configuration of the present invention is simple, easy to use; the synchronously control of piston rod is realized by the way that bidirectional hydraulic circuit is arranged between fluid pressure line, bidirectional hydraulic lock, hydraulic cylinder body; the kinetic characteristic of piston rod is adjusted by one-way speed-regulating valve; hydraulic cylinder is set to have the function of self-lock protection; it has the advantages that control precision is high, size is small, light-weighted, can be widely applied in fluid drive system.
Description
Technical field
The present invention relates to the double formula synchronous hydraulic cylinders out in executing agency field more particularly to a kind of double piston-rod.
Background technique
Hydraulic cylinder is the pressure-driven executive component by hydraulic energy transfer for mechanical energy.Current bi-directional synchronization hydraulic system
It mostly uses two sets of single piston rod cylinders and hydraulic control circuit to form greatly, has the following problems in actual application:
1, due to oil cylinder processing and installation error, cause the hydraulic synchronous system synchronization accuracy based on single piston rod cylinder compared with
Difference even will appear the problem that system can not synchronize by long-term use；
2, since the hydraulic synchronous system based on single piston rod cylinder is by the synchronized circuit control of two sets of single piston rod cylinder systems
System realizes that installation interface quantity is more in arrangement installation process for two sets of single-piston rod thick stick hydraulic circuits, requires have biggish cloth
Installation space is set, there may be the case where can not implementing under the conditions of arrangement space is limited；
3, since the hydraulic synchronous system based on single piston rod cylinder increases the sky of arrangement mounting structure in placement process
Between size, cause structure space size redundancy and arragement construction quality to increase.
Summary of the invention
The applicant is directed to above-mentioned existing issue, has carried out Improvement, provides a kind of double formulas out of double piston-rod synchronous liquid
Cylinder pressure has the advantages that synchronous control accuracy is high, easy for installation, installation dimension is small, light-weighted.
The technical solution adopted in the present invention is as follows:
A kind of double formula synchronous hydraulic cylinders out of double piston-rod, the hydraulic cylinder including integrated bi-directional hydraulic lock, one-way speed-regulating valve
Body, the both ends of the hydraulic cylinder body are tightly connected drive end bearing bracket respectively, difference shape at left and right sides of the inside of the hydraulic cylinder body
At the hydraulic cylinder rod chamber for having hydraulic fluid port, band is formed between adjacent hydraulic cylinder rodless cavity, in the inside of the hydraulic cylinder body
There is the hydraulic cylinder rodless cavity of hydraulic fluid port, is separated between each hydraulic cylinder rod chamber and hydraulic cylinder rodless cavity by hydraulic cylinder seam allowance, in each liquid
Piston is set inside cylinder pressure rod chamber, connects piston rod on the piston.
Its further technical solution is:
The bidirectional hydraulic lock is combined and is constituted by the first one-way hydraulic lock interconnected and the second one-way hydraulic lock, described
First one-way hydraulic lock is connected by one-way speed-regulating valve and fluid pressure line with the oil inlet and outlet of a hydraulic cylinder rod chamber, and described the
Two individual event hydraulic locks are connected by fluid pressure line with the oil inlet and outlet of hydraulic cylinder rodless cavity, the disengaging of another hydraulic cylinder rod chamber
Hydraulic fluid port forms synchronization loop with the fluid pressure line and company for connecting the first one-way hydraulic lock by fluid pressure line, individual event speed governing valve；
The hydraulic cylinder seam allowance and hydraulic cylinder body are integrally formed.
Beneficial effects of the present invention are as follows:
It is the configuration of the present invention is simple, easy to use, by being arranged between fluid pressure line, bidirectional hydraulic lock, hydraulic cylinder body
Bidirectional hydraulic circuit realizes the synchronously control of piston rod, and the kinetic characteristic of piston rod is adjusted by one-way speed-regulating valve, is made hydraulic
Cylinder has the function of self-lock protection, has the advantages that control precision is high, size is small, light-weighted, can be widely applied to fluid driving
In system.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the schematic diagram of synchronization system in the present invention.
Fig. 3 is the synchronous schematic diagram stretched out of piston rod in the present invention.
Fig. 4 is the schematic diagram of piston rod synchronization telescope in the present invention.
Wherein: 1, piston rod；2, hydraulic cylinder body；3, hydraulic cylinder seam allowance；4, piston；5, drive end bearing bracket；6, bidirectional hydraulic lock；
601, the first one-way hydraulic lock；602, the second one-way hydraulic lock；7, one-way speed-regulating valve；8, the double formula synchronous hydraulics out of double piston-rod
Cylinder.
Specific embodiment
Illustrate a specific embodiment of the invention below.
As shown in Figure 1, a kind of double formula synchronous hydraulic cylinders out of double piston-rod include integrated bi-directional hydraulic lock 6, one-way speed-regulating valve 7
Hydraulic cylinder body 2, the both ends of hydraulic cylinder body 2 are tightly connected drive end bearing bracket 5 respectively, at left and right sides of the inside of hydraulic cylinder body 2
It is respectively formed the hydraulic cylinder rod chamber with hydraulic fluid port, is formed between adjacent hydraulic cylinder rodless cavity, in the inside of hydraulic cylinder body 2
Hydraulic cylinder rodless cavity with hydraulic fluid port is separated between each hydraulic cylinder rod chamber and hydraulic cylinder rodless cavity by hydraulic cylinder seam allowance 3, hydraulic
Cylinder seam allowance 3 and hydraulic cylinder body 2 are integrally formed.Piston 4 is set inside each hydraulic cylinder rod chamber, connects piston rod on piston 4
1。
As shown in Figure 1 and Figure 2, bidirectional hydraulic lock 6 is by the first one-way hydraulic lock 601 interconnected and the second one-way hydraulic
602 combination of lock is constituted, and the first one-way hydraulic lock 601 passes through one-way speed-regulating valve 7 and fluid pressure line and hydraulic cylinder rod chamber
Oil inlet and outlet series connection, the second one-way hydraulic lock 602 are connected by fluid pressure line with the oil inlet and outlet of hydraulic cylinder rodless cavity, another
The oil inlet and outlet of hydraulic cylinder rod chamber passes through fluid pressure line, one-way speed-regulating valve 7 and the hydraulic tube for connecting the first one-way hydraulic lock 601
Lu Binglian forms synchronization loop.
Specific implementation process of the invention is as follows:
As shown in Figure 2 and Figure 3, A, B are hydraulic cylinder rod chamber oil inlet and outlet in the present invention, and P is the disengaging of hydraulic cylinder rodless cavity
Hydraulic fluid port；As shown in Fig. 2, hydraulic oil flows into fluid pressure line, bidirectional hydraulic when flowing through bidirectional hydraulic lock 6 by oil inlet and outlet B
Lock 6 is opened, and hydraulic oil separately flows into each hydraulic cylinder by hydraulic cylinder seam allowance 3 by flowing into hydraulic cylinder rodless cavity, hydraulic oil at this time
Rod chamber, hydraulic oil push piston 4 and piston rod 1 simultaneously, make each piston rod 1 direction synchronizing moving to left and right, push away in hydraulic oil
When piston bar 1 stretches out, the hydraulic oil in two hydraulic cylinder rod chambers passes through the one-way speed-regulating valve 7 and fluid pressure line of each son respectively
Flow into the bidirectional hydraulic lock 6 that has already turned on and from into lake hydraulic fluid port A oil return.
As shown in figure 4, double piston-rod pair goes out the course of work of the synchronous stroke of double piston-rod in formula synchronous hydraulic cylinders 8
It is as follows:
Hydraulic oil flows into fluid pressure line through oil inlet and outlet A, and the bidirectional hydraulic lock 6 is opened when 6 when flowing through bidirectional hydraulic lock,
Then it is separately flowed into hydraulic cylinder rod chamber by one-way speed-regulating valve 7 and each fluid pressure line, hydraulic oil is by pushing piston 4 and living
Stopper rod 1 moves left and right, and when hydraulic oil pushes piston rod 1 to shrink, the hydraulic oil of hydraulic cylinder rodless cavity is through open bidirectional hydraulic
6 are locked from oil inlet and outlet B oil return.
Since the hydraulic fluid pressure that hydraulic cylinder rodless cavity flows into hydraulic cylinder rod chamber is identical, the fortune of two piston rods 1
Dynamic characteristic is identical, remains synchronous during the motion, and piston rod 1 is adjusted by the retention characteristic of one-way speed-regulating valve 7
The speed of service, bidirectional hydraulic lock 6 be arranged such that piston rod 1 can in the process of running any position parking.
It is the configuration of the present invention is simple, easy to use, by being arranged between fluid pressure line, bidirectional hydraulic lock, hydraulic cylinder body
Bidirectional hydraulic circuit realizes the synchronously control of piston rod, and the kinetic characteristic of piston rod is adjusted by one-way speed-regulating valve, is made hydraulic
Cylinder has the function of self-lock protection, has the advantages that control precision is high, size is small, light-weighted, can be widely applied to fluid driving
In system.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Claims (3)
1. a kind of double formula synchronous hydraulic cylinders out of double piston-rod, it is characterised in that: including integrated bi-directional hydraulic lock (6), unidirectional speed regulation
The both ends of the hydraulic cylinder body (2) of valve (7), the hydraulic cylinder body (2) are tightly connected drive end bearing bracket (5), the hydraulic cylinder respectively
Be respectively formed the hydraulic cylinder rod chamber with hydraulic fluid port at left and right sides of the inside of cylinder body (2), between adjacent hydraulic cylinder rodless cavity,
The inside of the hydraulic cylinder body (2) forms the hydraulic cylinder rodless cavity for having hydraulic fluid port, and each hydraulic cylinder rod chamber and hydraulic cylinder are without bar
Separated between chamber by hydraulic cylinder seam allowance (3), piston (4) are set inside each hydraulic cylinder rod chamber, connected and live on the piston (4)
Stopper rod (1).
2. the double formula synchronous hydraulic cylinders out of a kind of double piston-rod as described in claim 1, it is characterised in that: the bidirectional hydraulic lock
(6) it is made of the first one-way hydraulic lock (601) and the second one-way hydraulic lock (602) combination interconnected, described first is unidirectional
Hydraulic lock (601) is connected by one-way speed-regulating valve (7) and fluid pressure line with the oil inlet and outlet of a hydraulic cylinder rod chamber, and described the
Two individual event hydraulic locks (602) are connected by fluid pressure line with the oil inlet and outlet of hydraulic cylinder rodless cavity, another hydraulic cylinder rod chamber
Oil inlet and outlet pass through fluid pressure line, individual event speed governing valve (7) and the fluid pressure line that connect the first one-way hydraulic lock (601) and company's shape
At synchronization loop.
3. the double formula synchronous hydraulic cylinders out of a kind of double piston-rod as described in claim 1, it is characterised in that: the hydraulic cylinder seam allowance
(3) integrally formed with hydraulic cylinder body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955060.7A CN108953279A (en) | 2018-08-21 | 2018-08-21 | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955060.7A CN108953279A (en) | 2018-08-21 | 2018-08-21 | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108953279A true CN108953279A (en) | 2018-12-07 |
Family
ID=64473321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810955060.7A Pending CN108953279A (en) | 2018-08-21 | 2018-08-21 | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953279A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578041A (en) * | 2018-12-26 | 2019-04-05 | 天地科技股份有限公司 | A kind of clear float coal device of advanced hydraulic support |
| CN109611410A (en) * | 2018-12-29 | 2019-04-12 | 山东万通液压股份有限公司 | A kind of swelling oil cylinder |
| CN109695604A (en) * | 2018-12-28 | 2019-04-30 | 上海建工集团股份有限公司 | Dual Piston synchronous fuel tank device |
| CN110230623A (en) * | 2019-07-20 | 2019-09-13 | 蚌埠液力机械有限公司 | A kind of synchronization telescope double-outlet cylinder |
| CN111530700A (en) * | 2020-05-08 | 2020-08-14 | 济南悉通液压设备配套有限公司 | Glue leakage prevention hydraulic system for butyl rubber coating machine and integrated valve block thereof |
| CN112709800A (en) * | 2020-12-29 | 2021-04-27 | 山东艾克来科技发展有限公司 | Hydraulic device for hydraulic transmission of hydraulic torque converter |
| CN113847302A (en) * | 2021-10-18 | 2021-12-28 | 马鞍山市裕华机械制造有限公司 | Self-locking bidirectional alternate motion hydraulic cylinder and implementation method thereof |
| CN114001064A (en) * | 2020-12-18 | 2022-02-01 | 冯思远 | Bogie deflection detection cylinder |
| CN114370442A (en) * | 2021-12-28 | 2022-04-19 | 荆门美中美阀门有限公司 | Double-piston oil cylinder |
| CN114455498A (en) * | 2022-01-26 | 2022-05-10 | 浙江工业大学 | External oil source-free pump-controlled electro-hydraulic jack |
| CN115910638A (en) * | 2022-09-07 | 2023-04-04 | 中国科学院电工研究所 | Large current loop on-off switching mechanism |
| CN116146179A (en) * | 2023-02-14 | 2023-05-23 | 西安蓝水泵业有限公司 | Carbon fiber rod type logging cable injection system and process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201915133U (en) * | 2010-11-25 | 2011-08-03 | 中南大学 | Hydraulic driving system of high-temperature aluminium slag pressing machine |
| CN103291676A (en) * | 2013-05-29 | 2013-09-11 | 长城汽车股份有限公司 | Control oilway of hydraulic drive double-acting cylinder |
| CN205331118U (en) * | 2016-02-02 | 2016-06-22 | 株洲联诚集团减振器有限责任公司 | Two effect hydraulic cylinder |
-
2018
- 2018-08-21 CN CN201810955060.7A patent/CN108953279A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201915133U (en) * | 2010-11-25 | 2011-08-03 | 中南大学 | Hydraulic driving system of high-temperature aluminium slag pressing machine |
| CN103291676A (en) * | 2013-05-29 | 2013-09-11 | 长城汽车股份有限公司 | Control oilway of hydraulic drive double-acting cylinder |
| CN205331118U (en) * | 2016-02-02 | 2016-06-22 | 株洲联诚集团减振器有限责任公司 | Two effect hydraulic cylinder |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578041A (en) * | 2018-12-26 | 2019-04-05 | 天地科技股份有限公司 | A kind of clear float coal device of advanced hydraulic support |
| CN109695604A (en) * | 2018-12-28 | 2019-04-30 | 上海建工集团股份有限公司 | Dual Piston synchronous fuel tank device |
| CN109611410A (en) * | 2018-12-29 | 2019-04-12 | 山东万通液压股份有限公司 | A kind of swelling oil cylinder |
| CN110230623A (en) * | 2019-07-20 | 2019-09-13 | 蚌埠液力机械有限公司 | A kind of synchronization telescope double-outlet cylinder |
| CN111530700A (en) * | 2020-05-08 | 2020-08-14 | 济南悉通液压设备配套有限公司 | Glue leakage prevention hydraulic system for butyl rubber coating machine and integrated valve block thereof |
| CN111530700B (en) * | 2020-05-08 | 2021-03-19 | 济南悉通液压设备配套有限公司 | Glue leakage prevention hydraulic system for butyl rubber coating machine and integrated valve block thereof |
| CN114001064A (en) * | 2020-12-18 | 2022-02-01 | 冯思远 | Bogie deflection detection cylinder |
| CN114001064B (en) * | 2020-12-18 | 2024-04-05 | 北京鼎瑞通达轨道科技有限公司 | Bogie deflection detection cylinder |
| CN112709800A (en) * | 2020-12-29 | 2021-04-27 | 山东艾克来科技发展有限公司 | Hydraulic device for hydraulic transmission of hydraulic torque converter |
| CN113847302A (en) * | 2021-10-18 | 2021-12-28 | 马鞍山市裕华机械制造有限公司 | Self-locking bidirectional alternate motion hydraulic cylinder and implementation method thereof |
| CN113847302B (en) * | 2021-10-18 | 2024-05-28 | 马鞍山市裕华机械制造有限公司 | Self-locking type bidirectional alternating motion hydraulic cylinder and implementation method thereof |
| CN114370442A (en) * | 2021-12-28 | 2022-04-19 | 荆门美中美阀门有限公司 | Double-piston oil cylinder |
| CN114370442B (en) * | 2021-12-28 | 2024-04-26 | 荆门美中美阀门有限公司 | Double-piston oil cylinder |
| CN114455498A (en) * | 2022-01-26 | 2022-05-10 | 浙江工业大学 | External oil source-free pump-controlled electro-hydraulic jack |
| CN114455498B (en) * | 2022-01-26 | 2024-04-09 | 浙江工业大学 | Pump control electrohydraulic jack without external oil source |
| CN115910638A (en) * | 2022-09-07 | 2023-04-04 | 中国科学院电工研究所 | Large current loop on-off switching mechanism |
| CN115910638B (en) * | 2022-09-07 | 2023-11-14 | 中国科学院电工研究所 | High-current loop on-off switching mechanism |
| CN116146179A (en) * | 2023-02-14 | 2023-05-23 | 西安蓝水泵业有限公司 | Carbon fiber rod type logging cable injection system and process |
| CN116146179B (en) * | 2023-02-14 | 2024-04-02 | 陕西航天德林科技集团有限公司 | Carbon fiber rod type logging cable injection system and process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108953279A (en) | A kind of double formula synchronous hydraulic cylinders out of double piston-rod | |
| CN201106590Y (en) | Apparatus for controlling dual-oil-cylinder synchronous shrinking | |
| CN208565103U (en) | Hydraulically locking system | |
| CN107401533A (en) | A kind of end control type internal-expansion type mechanical interlocking hydraulic jack and its operation method | |
| CN108488112B (en) | Differential loop of large-flow hydraulic system and control method thereof | |
| CN102619805B (en) | Hydraulic cylinder suitable for controlling plurality of hydraulic cylinders to extend sequentially | |
| CN105605022B (en) | A kind of Multi-cylinder sequential telescopic mechanism and engineering machinery | |
| CN109340443A (en) | A kind of miniaturization gas-liquid linkage actuator suitable for large bore valves, low gas source | |
| CN107191423B (en) | A kind of hydraulic synchronization control loop | |
| CN202040145U (en) | Multistage locking cylinder | |
| CN103626057A (en) | Crane and hydraulic system thereof | |
| CN205173106U (en) | Novel synchronous valve | |
| CN108131349A (en) | The changeable single action circuit synchronous with series connection and its application method | |
| CN104153786B (en) | A kind of energy-saving type shield propulsion hydraulic system adopting coaxial motor | |
| CN103195764A (en) | Two-stage bi-directional high-precision hydraulic synchronous control system | |
| CN208778396U (en) | A kind of hydraulic device and hot chamber machine | |
| CN205715008U (en) | A kind of self-loopa list rod double acting constant speed digital electrohydraulic cylinder | |
| CN106224312A (en) | A kind of single plunger pump matrix form arranges fluid power system | |
| CN205401284U (en) | When synchronous operation hydro -cylinder of flow distribution formula | |
| CN205136208U (en) | Ally oneself with synchronous pneumatic cylinder more | |
| CN209100376U (en) | One kind one pumps multi-cylinder energy-saving hydraulic device | |
| CN202370921U (en) | Oil cylinder synchronization structure and engineering machinery | |
| CN106369004A (en) | Integrated motor-pump-control single-piston rod symmetrical hydraulic cylinder with built-in displacement sensor | |
| EP2787214B1 (en) | Fuel pump system | |
| CN209755986U (en) | Two board-like injection molding machine band-type brake hydraulic pressure synchronous control systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181207 |