CN107235439A - A kind of hydraulic power unit of three-dimensional adjusting machine - Google Patents
A kind of hydraulic power unit of three-dimensional adjusting machine Download PDFInfo
- Publication number
- CN107235439A CN107235439A CN201710481715.7A CN201710481715A CN107235439A CN 107235439 A CN107235439 A CN 107235439A CN 201710481715 A CN201710481715 A CN 201710481715A CN 107235439 A CN107235439 A CN 107235439A
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- Prior art keywords
- pressure
- oil
- pump
- jack
- low
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/43—Pyrotechnical jacks
-
- 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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/05—Hydraulic jacks
-
- 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
- F15B2211/20576—Systems with pumps with multiple pumps
- F15B2211/20592—Combinations of pumps for supplying high and low pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of hydraulic power unit of three-dimensional adjusting machine, including fuel tank, high-pressure pump and low-lift pump, the high-pressure pump and low-lift pump are separately positioned on fuel tank；It includes high-pressure oil pump system and low pressure fuel pump system, and the high-pressure oil pump system is moved horizontally loop and constituted by high-pressure pump, the vertical jacking loop of a Z-direction, two；The low pressure fuel pump system is made up of low-lift pump, walking loop, a jack-up action circuit；The present invention integrates high pressure pumping station and low pressure pumping plant.Low pressure pumping plant：The lifting of low pressure valve group control jack-up oil cylinder and the rotating of hydraulic motor；High pressure pumping station：Z-direction valve group controls the raising and lowering of Z-direction jack equipped with balanced valve, and the valve group can make weight smooth decreasing and with pressure holding function；X ﹑ Y-valve group controlled level oil cylinders move forward and backward.
Description
Technical field
The present invention relates to a kind of hydraulic power unit, more particularly to a kind of hydraulic power unit of three-dimensional adjusting machine belongs to hydraulic test
Technical field.
Background technology
With the raising of shipbuilding industry manufacturing capacity, more and more, small then hundreds of tons, the large-scale structure of big then thousands of tons of are occurred in that
The piece welding of part.However, goliath elevating capacity can not meet above working condition requirement at present, thus occur in that large-scale
The piece Welding Problems of component.For the large-scale component more than elevating capacity scope, manufacturer is for cost and feasibility
Consider, it will usually use three-dimensional adjusting machine, for above and below, the large-scale component of adjustment positioning around.Three-dimensional adjusting machine is used as ship
Oceangoing ship crane gear has the advantages that elevating capacity is expansible, construction is flexible, total cost is cheap.Just because of three-dimensional adjusting machine these
Advantage so that its application is more and more extensive.Due to the limitation of site environment, three-dimensional adjusting machine should possess walking function,
And generally require component in a repositioning process for component and keep a certain highly constant within the regular hour, and level side
The function of possessing adjustment to having, common hydraulic power unit is difficult while realizing all of above function.
The content of the invention
It is an object of the present invention to provide a kind of hydraulic power unit of three-dimensional adjusting machine, the hydraulic power unit can be adjusted flexibly and
Position walking and the positioning function of three-dimensional adjusting machine.
To achieve the above object, the technical solution adopted by the present invention is, a kind of hydraulic power unit of three-dimensional adjusting machine, including
Fuel tank, high-pressure pump and low-lift pump, the high-pressure pump and low-lift pump are separately positioned on fuel tank；It includes high-pressure oil pump system and low
Pumping system is pressed oil, the high-pressure oil pump system is moved horizontally loop and constituted by high-pressure pump, the vertical jacking loop of a Z-direction, two；
The low pressure fuel pump system is made up of low-lift pump, walking loop, a jack-up action circuit；
The inlet port of the high-pressure pump is connected with fuel tank, and its oil-out is connected with the oil inlet of the first reversing solenoid valve, the
The oil-out of one reversing solenoid valve is connected by balanced valve with the rodless cavity of vertical jack, and the rod chamber of vertical jack takes back
Oil pipe line；
X is also parallel with the oil-out of the high-pressure pump respectively to level jack and Y-direction level jack；The X to
The rodless cavity of level jack is connected with the oil-out of the second solenoid directional control valve, and its rod chamber takes back oil pipe line；The Y-direction level
The rodless cavity of jack is connected with the oil-out of the 3rd solenoid directional control valve, and its rod chamber takes back oil pipe line；
The inlet port of the low-lift pump is connected with fuel tank, its oil-out and the 4th solenoid directional control valve and the 5th solenoid directional control valve
Oil inlet connection, the oil-out of the 4th solenoid directional control valve is connected with running motor, and running motor takes back oil pipe line, described
Respectively paralleled on the oil-out of 5th solenoid directional control valve and be connected to three vehicle frame jack-up jack, the rod chamber of vehicle frame jack-up jack
Take back oil pipe line.
Preferably, the vertical jack, X are respectively arranged with one in level jack and Y-direction level jack
Displacement transducer, the top lifting height for sensing each jacking cylinder.
Preferably, a pressure sensor is additionally provided with the rodless cavity of the vertical jack, for sensing vertical thousand
The pressure of hydraulic oil in jin top.
Preferably, being provided with the first overflow valve on the return line of the vertical jack, prevent from pressing on return line
Fluid occurs when power exceeds the setting value of overflow valve to leak.
Preferably, being respectively arranged with second overflow valve in the outlet line of the high-pressure pump and low-lift pump, work as pressure
Power reaches during the setting value of the second overflow valve that fuel tank is then flowed back in additional part by the second overflow valve, other parts continue to
On walk.
Preferably, being respectively arranged with pressure gauge between the high-pressure pump and the outlet line and the second overflow valve of low-lift pump
And relief valve, the effect of relief valve mainly is the pressure gauge pressure represented on high-pressure pump and low-lift pump for debugging and testing.
Preferably, being connected to a filter between the inlet port of the fuel tank and high-pressure pump and low-lift pump.
Preferably, being also associated with a hydraulic control one-way valve, hydraulic control one-way valve on the oil-out of the 5th solenoid directional control valve
Setting ensure that hydraulic oil can only one-way flow, realize the real-time jack-up of vehicle frame jack-up jack.
Preferably, the running motor is two-way quantitative hydraulic motor.
Preferably, a variable-frequency motor is connected with the high-pressure pump, because in high-pressure oil pump system, it is only not vertical
The action in direction, while also having the action of horizontal direction, so being controlled by a variable-frequency motor；Connected on the low-lift pump
There is a motor.
Beneficial effects of the present invention：The present invention integrates high pressure pumping station and low pressure pumping plant.Low pressure pumping plant：Low pressure valve
The lifting of group control jack-up oil cylinder and the rotating of hydraulic motor；High pressure pumping station：Z-direction valve group is very heavy equipped with balanced valve control Z-direction
The raising and lowering on top, the valve group can make weight smooth decreasing and with pressure holding function；The advance of X ﹑ Y-valve group controlled level oil cylinders
And retrogressing.Its specific advantage is embodied in：
1) using weight smooth decreasing can be made after the pumping plant；
2) multigroup control valve, operating efficiency is improved；
3) Integrated design, small volume is lightweight；
4) it is safe and reliable：This pumping plant is for component and operating personnel's safety.
Brief description of the drawings
, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical scheme
The accompanying drawing used is briefly described.
Fig. 1 is structural representation of the invention；
Fig. 2 is hydraulic schematic diagram of the invention；
In figure：1. fuel tank, 2. high-pressure pumps, 3. low-lift pumps, 4. first reversing solenoid valves, 5. balanced valves, 6. vertical jack,
7.X is to level jack, and 8.Y is to level jack, 9. second solenoid directional control valves, 10. the 3rd solenoid directional control valves, 11. the 4th electricity
Magnetic reversal valve, 12. the 5th solenoid directional control valves, 13. running motors, 14. vehicle frame jack-up jack, 15. displacement transducers, 16. pressures
Force snesor, 17. first overflow valves, 18. second overflow valves, 19. pressure gauges, 20. relief valves, 21. filters, 22. hydraulic control lists
To valve, 23. variable-frequency motors, 24. motors.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with embodiment pair
Technical scheme in the application is clearly and completely described.
As depicted in figs. 1 and 2, the invention discloses a kind of hydraulic power unit of three-dimensional adjusting machine, including fuel tank 1, high-pressure pump 2
With low-lift pump 3, the high-pressure pump 2 and low-lift pump 3 are separately positioned on fuel tank 1；It includes high-pressure oil pump system and low pressure fuel pump
System, the high-pressure oil pump system is moved horizontally loop and constituted by high-pressure pump 2, the vertical jacking loop of a Z-direction, two；It is described
Low pressure fuel pump system is made up of low-lift pump 3, walking loop, a jack-up action circuit；
The inlet port of the high-pressure pump 2 is connected with fuel tank 1, and the oil inlet P of its oil-out and the first reversing solenoid valve 4 connects
Connect, the oil-out A of the first reversing solenoid valve 4 is connected by balanced valve 5 with the rodless cavity of vertical jack 6, vertical jack 6
Rod chamber takes back oil pipe line；
X is also parallel with the oil-out of the high-pressure pump 2 respectively to level jack 7 and Y-direction level jack 8；The X
It is connected to the rodless cavity of level jack 7 with the oil-out A of the second solenoid directional control valve 9, its rod chamber takes back oil pipe line；The Y
It is connected to the rodless cavity of level jack 8 with the oil-out A of the 3rd solenoid directional control valve 10, its rod chamber takes back oil pipe line；
The inlet port of the low-lift pump 3 is connected with fuel tank 1, and its oil-out is changed with the 4th solenoid directional control valve 11 and the 5th electromagnetism
Connected to the oil inlet of valve 12, the oil-out of the 4th solenoid directional control valve 11 is connected with running motor 13, and running motor 13 connects
Respectively paralleled on return line, the oil-out of the 5th solenoid directional control valve 12 and be connected to three vehicle frame jack-up jack 14, vehicle frame
The rod chamber of jack-up jack 14 takes back oil pipe line.
The vertical jack 6, X are to being respectively arranged with a displacement biography in level jack 7 and Y-direction level jack 8
Sensor 15, the top lifting height for sensing each jacking cylinder.
A pressure sensor 16 is additionally provided with the rodless cavity of the vertical jack 6, for sensing in vertical jack
The pressure of hydraulic oil.
The first overflow valve 17 is provided with the return line of the vertical jack 6, prevents that pressure exceeds on return line
Fluid occurs during the setting value of overflow valve to leak.
Second overflow valve 18 is respectively arranged with the outlet line of the high-pressure pump 2 and low-lift pump 3, when pressure reaches
Fuel tank is then flowed back in additional part by the second overflow valve during the setting value of the second overflow valve, and other parts are continued up away.
Pressure gauge 19 and pressure release are respectively arranged between the outlet line and the second overflow valve of the high-pressure pump and low-lift pump
Valve 20, the effect of relief valve mainly is the pressure gauge pressure represented on high-pressure pump and low-lift pump for debugging and testing.
A filter 21 is connected between the inlet port of the fuel tank 1 and high-pressure pump 2 and low-lift pump 3.
It is also associated with a hydraulic control one-way valve 22 on the oil-out of 5th solenoid directional control valve 12, hydraulic control one-way valve 22 is set
Put ensure that hydraulic oil can only one-way flow, realize the real-time jack-up of vehicle frame jack-up jack.
The running motor 13 is two-way quantitative hydraulic motor.
A variable-frequency motor 23 is connected with the high-pressure pump 2, because in high-pressure oil pump system, not only vertical direction
Action, while also having the action of horizontal direction, so being controlled by a variable-frequency motor 23；It is connected with the low-lift pump 3
One motor 24.
Its course of work is：
High-pressure oil pump system：
(1) vertical jack：The lifting action of vertical jack 6 is controlled by the commutation action of the first solenoid directional control valve 4,
Balanced valve 5 can play pressure maintaining effect to jack system oil circuit, and keep rodless cavity to have during the decline of vertical jack
Certain back pressure, the process for declining load is steady.
(2) level jack：By second and the 3rd solenoid directional control valve commutation action controlled level jack (X to and Y
To) the action pushed or pulled on the front and rear of load and moved left and right to realize.
Low pressure fuel pump system：
By forward and reverse rotation of the commutation action running motor 13 of the 4th solenoid directional control valve 11 realize car body forward and
Successively walk, the raising and lowering of vehicle frame jack-up jack 14 is controlled by the 5th solenoid directional control valve, realize vehicle frame and ground
Separation and the action of vehicle frame walking.
The hydraulic control system of this patent is by PLC controls, the position that each jack of system acquisition is installed in the course of the work
The shift value of displacement sensor feedback, is compared by PLC, it is determined that the speed speed of affiliated jack, by adjusting frequency conversion
The rotating speed of the frequency shift motor of motor, thus change pumping plant output oil mass number, to adjust the speed between each jack,
Make its synchronization accuracy≤± 0.5mm.And real-time writing task overall process, realize the storage and printing of data.
Described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of protection of the invention.
Claims (10)
1. a kind of hydraulic power unit of three-dimensional adjusting machine, including fuel tank (1), high-pressure pump (2) and low-lift pump (3), the high-pressure pump (2)
It is separately positioned on low-lift pump (3) on fuel tank (1)；Characterized in that, it includes high-pressure oil pump system and low pressure fuel pump system, institute
High-pressure oil pump system is stated to be moved horizontally loop by high-pressure pump (2), the vertical jacking loop of a Z-direction, two and constituted；The low pressure oil
Pumping system is made up of low-lift pump (3), walking loop, a jack-up action circuit；
The inlet port of the high-pressure pump (2) is connected with fuel tank (1), and the oil inlet of its oil-out and the first reversing solenoid valve (4) connects
Connect, the oil-out of the first reversing solenoid valve (4) is connected by balanced valve (5) with the rodless cavity of vertical jack (6), it is vertical very heavy
The rod chamber on top (6) takes back oil pipe line；
X is also parallel with the oil-out of the high-pressure pump (2) respectively to level jack (7) and Y-direction level jack (8)；Institute
State X to the rodless cavity of level jack (7) with the oil-out of the second solenoid directional control valve (9) to be connected, its rod chamber takes back oil pipe line；
The rodless cavity of the Y-direction level jack (8) is connected with the oil-out of the 3rd solenoid directional control valve (10), and its rod chamber takes back oil pipe
Road；
The inlet port of the low-lift pump (3) is connected with fuel tank (1), its oil-out and the 4th solenoid directional control valve (11) and the 5th electromagnetism
The oil inlet connection of reversal valve (12), the oil-out of the 4th solenoid directional control valve (11) is connected with running motor (13), walked
Motor (13), which takes back to respectively parallel on oil pipe line, the oil-out of the 5th solenoid directional control valve (12), is connected to three vehicle frame jack-up thousand
Jin top (14), the rod chamber of vehicle frame jack-up jack (14) takes back oil pipe line.
2. the hydraulic power unit of three-dimensional adjusting machine according to claim 1, it is characterised in that the vertical jack (6), X
A displacement transducer (15) is respectively arranged with to level jack (7) and Y-direction level jack (8).
3. the hydraulic power unit of three-dimensional adjusting machine according to claim 2, it is characterised in that the vertical jack (6)
A pressure sensor (16) is additionally provided with rodless cavity.
4. the hydraulic power unit of three-dimensional adjusting machine according to claim 3, it is characterised in that the vertical jack (6)
The first overflow valve (17) is provided with return line.
5. the hydraulic power unit of three-dimensional adjusting machine according to claim 4, it is characterised in that the high-pressure pump (2) and low pressure
Second overflow valve (18) is respectively arranged with the outlet line of pump (3).
6. the hydraulic power unit of three-dimensional adjusting machine according to claim 5, it is characterised in that the high-pressure pump (2) and low pressure
Pressure gauge (19) and relief valve (20) are respectively arranged between the outlet line and the second overflow valve (18) of pump (3).
7. the hydraulic power unit of three-dimensional adjusting machine according to claim 6, it is characterised in that the fuel tank (1) and high-pressure pump
(2) and between the inlet port of low-lift pump (2) it is connected to a filter (21).
8. the hydraulic power unit of three-dimensional adjusting machine according to claim 7, it is characterised in that the 5th solenoid directional control valve
(12) hydraulic control one-way valve (22) is also associated with oil-out.
9. the hydraulic power unit of three-dimensional adjusting machine according to claim 1, it is characterised in that the running motor (13) is double
To constant displacement hydraulic motor.
10. the hydraulic power unit of three-dimensional adjusting machine according to claim 1, it is characterised in that connected on the high-pressure pump (2)
Have and be connected with a motor (24) on a variable-frequency motor (23), the low-lift pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481715.7A CN107235439A (en) | 2017-06-22 | 2017-06-22 | A kind of hydraulic power unit of three-dimensional adjusting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481715.7A CN107235439A (en) | 2017-06-22 | 2017-06-22 | A kind of hydraulic power unit of three-dimensional adjusting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107235439A true CN107235439A (en) | 2017-10-10 |
Family
ID=59987833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710481715.7A Withdrawn CN107235439A (en) | 2017-06-22 | 2017-06-22 | A kind of hydraulic power unit of three-dimensional adjusting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107235439A (en) |
-
2017
- 2017-06-22 CN CN201710481715.7A patent/CN107235439A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171010 |