CN109099018A - A kind of Multifunction shuttle conveyer energy-saving hydraulic control system - Google Patents
A kind of Multifunction shuttle conveyer energy-saving hydraulic control system Download PDFInfo
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- CN109099018A CN109099018A CN201811136629.3A CN201811136629A CN109099018A CN 109099018 A CN109099018 A CN 109099018A CN 201811136629 A CN201811136629 A CN 201811136629A CN 109099018 A CN109099018 A CN 109099018A
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- valve
- way electromagnetic
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- oil
- electromagnetic directional
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Classifications
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
-
- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B21/14—Energy-recuperation means
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- 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
- F15B2211/50—Pressure control
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
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- 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 Multifunction shuttle conveyer technical fields, more particularly to a kind of Multifunction shuttle conveyer energy-saving hydraulic control system, including oil groove, first check valve, second one-way valve, third check valve, variable pump, three-position four-way electromagnetic directional valve, hydraulic cylinder, two position, three-way electromagnetic change valve, speed governing valve, accumulator, first two-position two-way electromagnetic directional valve, second two-position two-way electromagnetic directional valve, pilot operated electromagnetic relief valve and direct-acting overflow valve, while this system uses accumulator as energy-storage travelling wave tube recycling and reusing gravitional force, for the different operating condition of turnover mechanism raising and lowering in Multifunction shuttle conveyer, also take the mode to hydraulic system second voltage regulation, it can make hydraulic system under different operating conditions to work under different maximum working pressures, improve the working efficiency of the system, reduce energy consumption.
Description
Technical field
The present invention relates to Multifunction shuttle conveyer technical fields, and in particular to a kind of Multifunction shuttle conveyer energy-conserving hydraulic control system
System.
Background technique
Multifunction shuttle conveyer is one important link of automotive painting line, has important shadow to painting dressing automobiles quality, painting cost
It rings, but uses the Multifunction shuttle conveyer of hydraulic-driven at present, hydraulic control system efficiency is generally lower, and how to reduce energy consumption is
Emphasis considers the problems of when designing hydraulic system.
Summary of the invention
The technical problem to be solved in the present invention, the present invention provides a kind of Multifunction shuttle conveyers for having energy recovery function
Energy-saving hydraulic control system.
The technical solution adopted by the present invention are as follows: a kind of Multifunction shuttle conveyer energy-saving hydraulic control system, including oil groove, first
Check valve, second one-way valve, third check valve, variable pump, three-position four-way electromagnetic directional valve, hydraulic cylinder, two-position three-way electromagnetic change
It overflows to valve, speed governing valve, accumulator, the first two-position two-way electromagnetic directional valve, the second two-position two-way electromagnetic directional valve, guide type electromagnetic
Stream valve and direct-acting overflow valve, the oil inlet of first check valve connect with oil groove, the oil outlet of first check valve and
The oil inlet of variable pump connects, and the oil outlet of the variable pump and the P mouth of three-position four-way electromagnetic directional valve connect, and described three four
The A mouth of electric change valve is connect with the rod chamber of hydraulic cylinder, the rodless cavity and two position, three-way electromagnetic change valve of the hydraulic cylinder
The connection of A1 mouth, the T1 mouth of the two position, three-way electromagnetic change valve connect with the B of three-position four-way electromagnetic directional valve mouth, described three
The T mouth of four-way electromagnetic reversing valve is connect with oil groove, and the P1 mouth of the two position, three-way electromagnetic change valve is single by speed governing valve and second
It is connected to the oil inlet of valve, the oil outlet of the second one-way valve is connect with accumulator, the first bi-bit bi-pass electromagnetic switch
One hydraulic fluid port of valve is connect with accumulator, and another hydraulic fluid port is connect with the oil inlet of third check valve, the third check valve it is fuel-displaced
Mouth is connect with the oil inlet of variable pump, and the oil inlet of the pilot operated electromagnetic relief valve and the oil outlet of variable pump connect, described
The oil outlet of pilot operated electromagnetic relief valve is connect with oil groove, the pilot control hydraulic fluid port of the pilot operated electromagnetic relief valve and the two or two
The hydraulic fluid port connection of two electric change valves of position, another hydraulic fluid port of second two-position two-way electromagnetic directional valve and Direct Action Type overflow
The oil inlet of valve connects, and the oil outlet of the direct-acting overflow valve is connect with oil groove.
A kind of Multifunction shuttle conveyer energy-saving hydraulic control system as described above, further illustrates to be that the accumulator is adopted
Use bladder accumulator.
A kind of Multifunction shuttle conveyer energy-saving hydraulic control system as described above further illustrates to be that described first is unidirectional
The oil inlet of valve is equipped with oil strainer.
The beneficial effects of the present invention are: this system is using accumulator as the same of energy-storage travelling wave tube recycling and reusing gravitional force
When, for the different operating condition of turnover mechanism raising and lowering in Multifunction shuttle conveyer, also take to hydraulic system second voltage regulation
Mode can make hydraulic system, to work under different maximum working pressures, improve the work of the system under different operating conditions
Efficiency reduces energy consumption.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
In figure: 1, oil groove；2, the first check valve；3, second one-way valve；4, third check valve；5, variable pump；6, three four
Electric change valve；7, hydraulic cylinder；8, two position, three-way electromagnetic change valve；9, speed governing valve；10, accumulator；11, the first bi-bit bi-pass
Solenoid directional control valve；12, the second two-position two-way electromagnetic directional valve；13, pilot operated electromagnetic relief valve；14, direct-acting overflow valve；15,
Oil strainer.
Specific embodiment
Embodiment of the present invention is further elaborated with reference to the accompanying drawing.
As shown in Figure 1, a kind of Multifunction shuttle conveyer energy-saving hydraulic control system provided in this embodiment, including oil groove 1,
One check valve 2, second one-way valve 3, third check valve 4, variable pump 5, three-position four-way electromagnetic directional valve 6, hydraulic cylinder 7, two three
Electric change valve 8, speed governing valve 9, accumulator 10, the first two-position two-way electromagnetic directional valve 11, the second bi-bit bi-pass electromagnetic switch
Valve 12, pilot operated electromagnetic relief valve 13 and direct-acting overflow valve 14.
The oil inlet of first check valve 2 is connect with oil groove 1, oil outlet and the variable pump 5 of first check valve 2
Oil inlet connection, so that variable pump 5 be made to carry out oil suction from oil groove 1, preferably, can first check valve 2 into
Hydraulic fluid port is equipped with oil strainer 15, can be filtered to the oil liquid of the system of progress by setting oil strainer 15, to make oil liquid more
Add cleaning.
The oil outlet of the variable pump 5 is connect with the P of three-position four-way electromagnetic directional valve 6 mouth, and the 3-position 4-way electromagnetism changes
It is connect to the A mouth of valve 6 with the rod chamber of hydraulic cylinder 7, the rodless cavity of the hydraulic cylinder 7 and the A1 of two position, three-way electromagnetic change valve 8
Mouth connection, the T1 mouth of the two position, three-way electromagnetic change valve 8 are connect with the B of three-position four-way electromagnetic directional valve 6 mouth, and described three four
The T mouth of electric change valve 6 is connect with oil groove 1, and the P1 mouth of the two position, three-way electromagnetic change valve 8 passes through speed governing valve 9 and second
The oil inlet of check valve 3 connects, and the oil outlet of the second one-way valve 3 is connect with accumulator 10, the first bi-bit bi-pass electricity
One hydraulic fluid port of magnetic reversal valve 11 is connect with accumulator 10, and another hydraulic fluid port is connect with the oil inlet of third check valve 4, the third list
It is connect to the oil outlet of valve 4 with the oil inlet of variable pump 5, to pass through the recycling of the complete pairing energy of accumulator 10, hereafter
It will elaborate.
The oil inlet of the pilot operated electromagnetic relief valve 13 is connect with the oil outlet of variable pump 5, and the guide type electromagnetic overflows
The oil outlet of stream valve 13 is connect with oil groove 1, the pilot control hydraulic fluid port and the second bi-bit bi-pass of the pilot operated electromagnetic relief valve 13
One hydraulic fluid port of solenoid directional control valve 12 connects, another hydraulic fluid port and direct-acting overflow valve of second two-position two-way electromagnetic directional valve 12
14 oil inlet connection, the oil outlet of the direct-acting overflow valve 14 is connect with oil groove 1, to pass through pilot operated electromagnetic relief valve
13 and direct-acting overflow valve 14 complete pressure regulation operation, be specifically described below.
Working principle of the present invention are as follows: Multifunction shuttle conveyer operating condition is mainly by turnover mechanism decline stage and ascent stage group
At；
The turnover mechanism decline stage: in the decline stage, hydraulic system carries out the gravitional force of turnover mechanism at this time
Recycling, since turnover mechanism self weight is bigger, the decline of turnover mechanism can substantially decline by self weight completely, and hydraulic pump 5 is right
Hydraulic cylinder 7 only helps out, and the second two-position two-way electromagnetic directional valve 12 is located at left station, pilot operated electromagnetic relief valve 13 at this time
Control mouth connects direct-acting overflow valve 14, and the maximum working pressure of hydraulic system is set by direct-acting overflow valve 14, hydraulic system
Work is under low pressure.Turnover mechanism under the effect of gravity, drives 7 piston rod of hydraulic cylinder retraction, the hydraulic oil warp that variable pump 5 exports
Three-position four-way electromagnetic directional valve 6 enters in the rod chamber of hydraulic cylinder 7, and the oil liquid of 7 rodless cavity of hydraulic cylinder is through two-position three way electricity at this time
Enter in accumulator 10 after magnetic reversal valve 8, speed governing valve 9 and second one-way valve 3, so that the gravitional force of turnover mechanism is changed into liquid
Pressure energy is stored in accumulator 10, and three-position four-way electromagnetic directional valve 6 is located at left station at this time, and two position, three-way electromagnetic change valve 8
In left station, the first two-position two-way electromagnetic directional valve 11 is located at right working position.
Turnover mechanism ascent stage: turnover mechanism self weight is bigger, and turnover mechanism acts on the power of hydraulic cylinder 7 all by liquid
The counteracted by pressure that press pump 5 provides, thus at this time at hydraulic system under high pressure, the second two-position two-way electromagnetic directional valve 12 at this time
In right working position, 13 control mouth of pilot operated electromagnetic relief valve is closed, and the maximum pressure of hydraulic system is by pilot operated electromagnetic relief valve 13
Setting.7 piston rod of hydraulic cylinder stretches out at this time, and the oil liquid that variable pump 5 exports is through three-position four-way electromagnetic directional valve 6, two-position three way electricity
Enter in the rodless cavity of hydraulic cylinder 7 after magnetic reversal valve 8, so that piston rod be made to stretch out, completes the lifting operations of turnover mechanism, at this time
The first two-position two-way electromagnetic directional valve 11 is set to be located at left station, the oil inlet of the oil liquid entering variable pump 5 of accumulator 10, to drop
The low outlet of variable pump and the pressure difference of entrance, therefore reduce the purpose of energy consumption.
The present invention is not limited to examples detailed above, in claims of the present invention limited range, art technology
The various deformations or amendments that personnel can make without creative work are protected by this patent.
Claims (3)
1. a kind of Multifunction shuttle conveyer energy-saving hydraulic control system, it is characterised in that: including oil groove, the first check valve, the second list
To valve, third check valve, variable pump, three-position four-way electromagnetic directional valve, hydraulic cylinder, two position, three-way electromagnetic change valve, speed governing valve, storage
Energy device, the first two-position two-way electromagnetic directional valve, the second two-position two-way electromagnetic directional valve, pilot operated electromagnetic relief valve and Direct Action Type are overflow
Valve is flowed, the oil inlet of first check valve is connect with oil groove, the oil outlet of first check valve and the oil inlet of variable pump
Connection, the oil outlet of the variable pump and the P mouth of three-position four-way electromagnetic directional valve connect, the three-position four-way electromagnetic directional valve
A mouthfuls connect with the rod chamber of hydraulic cylinder, and the rodless cavity of the hydraulic cylinder and the A1 mouth of two position, three-way electromagnetic change valve connect, described
The T1 mouth of two position, three-way electromagnetic change valve is connect with the B of three-position four-way electromagnetic directional valve mouth, the three-position four-way electromagnetic directional valve
T mouth connect with oil groove, the P1 mouth of the two position, three-way electromagnetic change valve is connected by speed governing valve and the oil inlet of second one-way valve
It connects, the oil outlet of the second one-way valve is connect with accumulator, the hydraulic fluid port and storage of first two-position two-way electromagnetic directional valve
Can device connection, another hydraulic fluid port connect with the oil inlet of third check valve, the oil outlet of the third check valve and variable pump into
Hydraulic fluid port connection, the oil inlet of the pilot operated electromagnetic relief valve and the oil outlet of variable pump connect, the guide type electromagnetic overflow
The oil outlet of valve is connect with oil groove, the pilot control hydraulic fluid port of the pilot operated electromagnetic relief valve and the second bi-bit bi-pass electromagnetic switch
One hydraulic fluid port of valve connects, and another hydraulic fluid port of second two-position two-way electromagnetic directional valve and the oil inlet of direct-acting overflow valve connect
It connects, the oil outlet of the direct-acting overflow valve is connect with oil groove.
2. a kind of Multifunction shuttle conveyer energy-saving hydraulic control system according to claim 1, it is characterised in that: the accumulation of energy
Device uses bladder accumulator.
3. a kind of Multifunction shuttle conveyer energy-saving hydraulic control system according to claim 1, it is characterised in that: described first
The oil inlet of check valve is equipped with oil strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136629.3A CN109099018A (en) | 2018-09-27 | 2018-09-27 | A kind of Multifunction shuttle conveyer energy-saving hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136629.3A CN109099018A (en) | 2018-09-27 | 2018-09-27 | A kind of Multifunction shuttle conveyer energy-saving hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109099018A true CN109099018A (en) | 2018-12-28 |
Family
ID=64867514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811136629.3A Pending CN109099018A (en) | 2018-09-27 | 2018-09-27 | A kind of Multifunction shuttle conveyer energy-saving hydraulic control system |
Country Status (1)
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| CN (1) | CN109099018A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255460A (en) * | 2019-07-07 | 2019-09-20 | 中科聚信洁能热锻装备研发股份有限公司 | A kind of fluid power system and its control method of weight roll-over table |
| CN110454446A (en) * | 2019-08-15 | 2019-11-15 | 中国商用飞机有限责任公司 | Aircraft hydraulic pumps oil suction pressure charging system |
| CN110778537A (en) * | 2019-11-05 | 2020-02-11 | 宁波路佳机械科技有限公司 | Energy-saving hydraulic station |
| CN110820673A (en) * | 2019-11-12 | 2020-02-21 | 武汉纺织大学 | A accurate controllable formula water level floodgate of lifting height for river model |
| CN115972664A (en) * | 2022-12-19 | 2023-04-18 | 山东泰丰智能控制股份有限公司 | Angle modulation device control system |
-
2018
- 2018-09-27 CN CN201811136629.3A patent/CN109099018A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255460A (en) * | 2019-07-07 | 2019-09-20 | 中科聚信洁能热锻装备研发股份有限公司 | A kind of fluid power system and its control method of weight roll-over table |
| CN110454446A (en) * | 2019-08-15 | 2019-11-15 | 中国商用飞机有限责任公司 | Aircraft hydraulic pumps oil suction pressure charging system |
| CN110778537A (en) * | 2019-11-05 | 2020-02-11 | 宁波路佳机械科技有限公司 | Energy-saving hydraulic station |
| CN110820673A (en) * | 2019-11-12 | 2020-02-21 | 武汉纺织大学 | A accurate controllable formula water level floodgate of lifting height for river model |
| CN115972664A (en) * | 2022-12-19 | 2023-04-18 | 山东泰丰智能控制股份有限公司 | Angle modulation device control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181228 |
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| WD01 | Invention patent application deemed withdrawn after publication |