CN206872378U - A kind of aerial work platform hydraulic energy-saving system with no-load protection - Google Patents
A kind of aerial work platform hydraulic energy-saving system with no-load protection Download PDFInfo
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- CN206872378U CN206872378U CN201720828110.6U CN201720828110U CN206872378U CN 206872378 U CN206872378 U CN 206872378U CN 201720828110 U CN201720828110 U CN 201720828110U CN 206872378 U CN206872378 U CN 206872378U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
A kind of aerial work platform hydraulic energy-saving system with no-load protection; including aerial work platform body, large arm, hydraulic pump and fuel tank; the big arm cylinder of driving large arm lifting is set between aerial work platform body and large arm; big arm cylinder is two-way cylinder; fuel tank is connected with the oil inlet of hydraulic pump, and it also includes proportion magnetic valve, solenoid directional control valve I, accumulator, solenoid directional control valve II, check valve III, check valve IV, pilot operated directional control valve and choke valve；Set between aerial work platform body and large arm and lifted and flexible energy storage oil cylinder with large arm, energy storage oil cylinder is one-way cylinder.The utility model utilizes accumulator and energy storage oil cylinder, by hydraulic control, realizes that potential energy recycles, improves energy utilization rate, be advantageous to energy-conserving and environment-protective, and when pilot operated directional control valve can ensure hydraulic pump zero load, off-load also can be by the complete off-load of accumulator, convenient maintenance；Pressure switch detecting system pressure, prevent accumulator energy from being discharged in system zero load and shutdown.
Description
Technical field
It the utility model is related to the technical field of aerial work platform, and in particular to make in a kind of high-altitude with no-load protection
Industry platform hydraulic energy conserving system.
Background technology
Aerial work platform is served in mobility work high above the ground such as every profession and trade work high above the ground, equipment installation, maintenance, should
With wide.Aerial work platform has polytype, such as aerial work platform scissor aerial work platform, vehicular high-altitude
Job platform, crank type aerial working platform, straight arm type aerial work platform etc., to adapt to different operating modes, wherein straight-arm, crank arm
Formula aerial work platform is the flexible and luffing by working arm, drives the lifting of workbench, the equipment for carrying out work high above the ground.
At present, the straight-arm of in the market, crank type aerial working platform are to be used as power source using motor or engine, driving hydraulic pump,
Mechanical energy is transformed into hydraulic energy, workbench raising and lowering is made by principal arm elevating ram, is operated.During decline, because
Platform aloft has gravitional force, belongs to energy release process, and hydraulic oil directly flows back to fuel tank, and energy does not recycle,
Cause energy waste.
Utility model content
When being shunk to solve the principal arm elevating ram of aerial work platform, hydraulic oil directly flows back to fuel tank, and energy does not have back
Receive and utilize, cause the technical problem of energy waste, there is provided a kind of aerial work platform hydraulic energy-saving system with no-load protection.
The technical scheme that the utility model is taken is：
A kind of aerial work platform hydraulic energy-saving system with no-load protection, including aerial work platform body, large arm,
Hydraulic pump, fuel tank, set the big arm cylinder of driving large arm lifting between aerial work platform body and large arm, and big arm cylinder is
Two-way cylinder, fuel tank are connected with the oil inlet of hydraulic pump, are set between aerial work platform body and large arm with large arm liter
Drop and flexible energy storage oil cylinder；Aerial work platform hydraulic energy-saving system with no-load protection also includes proportion magnetic valve, electricity
Magnetic reversal valve I, accumulator, solenoid directional control valve II, check valve III, check valve IV, pilot operated directional control valve and choke valve；Hydraulic pump goes out
The oil inlet with proportion magnetic valve, the oil inlet of solenoid directional control valve I are connected hydraulic fluid port respectively, the oil-out and storage of solenoid directional control valve I
Can device connection, the oil-out of proportion magnetic valve is connected with the oil inlet of solenoid directional control valve II, the oil return opening of solenoid directional control valve II and
Fuel tank connects, and the first oil-out of solenoid directional control valve II and the rod chamber of big arm cylinder connect, and the second of solenoid directional control valve II goes out
Hydraulic fluid port and the rodless cavity of big arm cylinder connect；Energy storage oil cylinder is one-way cylinder, the rodless cavity of energy storage oil cylinder respectively with check valve
The oil inlet connection of III oil-out, check valve IV, the oil inlet of check valve III are connected with fuel tank, the oil-out of check valve IV and
Accumulator connects；
The oil inlet with solenoid directional control valve I, the oil-out of hydraulic pump are connected the oil inlet of pilot operated directional control valve respectively, and hydraulic control is changed
It is connected to the oil-out of valve with fuel tank, the left hydraulic control mouth of the pilot operated directional control valve oil-out with hydraulic pump, solenoid directional control valve I respectively
Oil inlet is connected, and the right hydraulic control mouth of pilot operated directional control valve be connected with the oil-out of proportion magnetic valve respectively, the oil inlet of choke valve company
Connect, the oil-out of choke valve is connected with fuel tank.
Pressure switch is set between check valve I and solenoid directional control valve I.
Energy storage oil cylinder is connected with overflow valve II.
The same side parallel arranged of energy storage oil cylinder and big arm cylinder in large arm.
Check valve I is provided between hydraulic pump and proportion magnetic valve.
Balanced valve is provided between solenoid directional control valve II and big arm cylinder, balanced valve includes overflow valve I and check valve II, overflows
Stream valve I, the oil inlet of check valve II are connected with the second oil-out of solenoid directional control valve II respectively, and overflow valve I and check valve II are simultaneously
Join and be connected respectively with the rodless cavity of big arm cylinder, the hydraulic control end of overflow valve I is connected with the first oil-out of solenoid directional control valve II.
In the oil-out connection safety valve of check valve I, the unloading port of safety valve is connected with fuel tank.
Solenoid directional control valve I is the normally closed inserted valve of two-way, which is provided with emergent handle.
Solenoid directional control valve II is three position four-way directional control valve, and pilot operated directional control valve is two-position two-way hydraulic control reversal valve.
The diameter of choke valve is less than 0.5 millimeter.
The utility model utilizes accumulator and energy storage oil cylinder, by hydraulic control, realizes that potential energy recycles, improves energy
Source utilization rate, be advantageous to energy-conserving and environment-protective, while when big arm cylinder breaks down, energy storage oil cylinder plays a part of buffer protection,
Large arm is supported, when pilot operated directional control valve can ensure hydraulic pump zero load, off-load, reduces energy consumption, also can be complete by accumulator
Off-load, convenient maintenance；Check valve I prevents hydraulic oil from flowing back, and safety valve prevents that system pressure is too high, protects system, pressure relay
Device detecting system pressure, prevent accumulator energy from being discharged in system zero load and shutdown.
Brief description of the drawings
Fig. 1 is hydraulic control principle schematic of the present utility model；
Fig. 2 is straight-arm, High Altitude Platform structural representation of cranking arm（One）；
Fig. 3 is straight-arm, High Altitude Platform structural representation of cranking arm（Two）.
Embodiment
As shown in Figure 1 to Figure 3, a kind of aerial work platform hydraulic energy-saving system with no-load protection, including high-altitude are made
Industry platform body 17, large arm 18, hydraulic pump 9 and fuel tank 8, set driving big between aerial work platform body 17 and large arm 18
The big arm cylinder 1 that arm 18 lifts, big arm cylinder 1 is two-way cylinder, and fuel tank 8 is connected with the oil inlet of hydraulic pump 9, is made in high-altitude
Set between industry platform body 17 and large arm 18 and lifted and flexible energy storage oil cylinder 5 with large arm 18, there is the high-altitude of no-load protection
Job platform hydraulic energy-saving system also include proportion magnetic valve 12, solenoid directional control valve I 13, accumulator 16, solenoid directional control valve II 4,
Check valve III 6, check valve IV 15, pilot operated directional control valve 17 and choke valve 18；The oil-out of hydraulic pump 9 respectively with proportion magnetic valve 12
Oil inlet P 2, the oil inlet P 1 of solenoid directional control valve I 13 connect, proportion magnetic valve 12 is connected in parallel with solenoid directional control valve I 13, electricity
Magnetic reversal valve I 13 is the normally closed inserted valve of two-way, can use extra large moral FOX SVCV08-20 seat valves, solenoid directional control valve I 13 it is fuel-displaced
Mouth A1 is connected with accumulator 16, and accumulator 16 sets pressure and is slightly larger than system pressure, oil-out A2 and the electricity of proportion magnetic valve 12
The oil inlet P connection of magnetic reversal valve II 4, the oil return inlet T of solenoid directional control valve II 4 is connected with fuel tank 8, and the of solenoid directional control valve II 4
One oil-out A is connected with the rod chamber of big arm cylinder 1, and the second oil-out B of solenoid directional control valve II 4 is with big arm cylinder 1 without bar
Chamber connects；Energy storage oil cylinder 5 is one-way cylinder, and the cylinder diameter of energy storage oil cylinder 5 makes according to institute's energy-storage pressure, because of the arm of force of energy storage oil cylinder 5
It is shorter, larger energy-storage pressure can be obtained, the rodless cavity of energy storage oil cylinder 5 oil-out with check valve III 6, check valve IV 15 respectively
Oil inlet is connected, and the oil inlet of check valve III 6 is connected with fuel tank 8, and the oil-out of check valve IV 15 is connected with accumulator 16；
The oil inlet P 1 with solenoid directional control valve I 13, the oil-out of hydraulic pump 9 connect the oil inlet P 3 of pilot operated directional control valve 17 respectively
Connect, the oil-out A3 of pilot operated directional control valve 17 is connected with fuel tank 8, and the left hydraulic control mouth b of pilot operated directional control valve 17 goes out with hydraulic pump 9 respectively
Hydraulic fluid port, the oil inlet P 1 of solenoid directional control valve I 13 connect, the right hydraulic control mouth c of pilot operated directional control valve 17 respectively with proportion magnetic valve 12
Oil-out A2 connections, the oil inlet connection of choke valve 18, the oil-out of choke valve are connected with fuel tank 8, and pilot operated directional control valve 17 is located at
During left position, pilot operated directional control valve 17 is connected, and when pilot operated directional control valve 17 is located at right position, pilot operated directional control valve 17 is not connected, and choke valve 18 is used
When the left position of pilot operated directional control valve 17 and right position switch, the pressure release of pilot operated directional control valve 17.
Pressure switch 11 is set between check valve I 10 and solenoid directional control valve I 13, can prevent the energy of accumulator 16 from existing
Discharged when system is unloaded and shuts down, when system pressure reaches pressure switch 11 and sets pressure, the right position of solenoid directional control valve I 13
Must be electric, the hydraulic oil in accumulator 16 is discharged into system, when system pressure is less than the pressure that pressure switch 11 is set, accumulation of energy
Hydraulic oil in device 16 does not discharge.
Energy storage oil cylinder 5 is connected with overflow valve II 14, prevents hypertonia in accumulator 16, if pressurising reaches accumulator 16
Rated pressure, overflow valve II 14 are opened, and the hydraulic oil in accumulator 16 flows into fuel tank 8.
Energy storage oil cylinder 5 and big arm cylinder 1 ensure energy storage oil cylinder 5 and big arm cylinder 1 in the same side parallel arranged of large arm 18
Being consistent property of motion.
It is provided with check valve I 10 between hydraulic pump 9 and proportion magnetic valve 12, the hydraulic oil in anti-locking system is back to hydraulic pressure
In pump 9.
Balanced valve is provided between solenoid directional control valve II 4 and big arm cylinder 1, balanced valve includes overflow valve I 3 and check valve II
2, overflow valve I 3, the oil inlet of check valve II 2 are connected with the second oil-out of solenoid directional control valve II 4 respectively, overflow valve I 3 and list
It is in parallel to valve II 2 and the rodless cavity with big arm cylinder 1 be connected respectively, the of the hydraulic control end of overflow valve I 3 and solenoid directional control valve II 4
One oil-out connects, and prevents big arm cylinder 1 after specified altitude assignment is risen to, because producing tenesmus the weight of its deadweight and large arm 18
Danger.
In the oil-out connection safety valve 7 of check valve I 10, the unloading port of safety valve 7 is connected with fuel tank 8, works as system pressure
When too high, the pressure release of safety valve 7, ensure that the pressure of system is in level of security.
Solenoid directional control valve I 13 is the normally closed inserted valve of two-way, which is provided with emergent handle, can manual releasing accumulator at any time
Hydraulic oil in 16, make the pressure release of accumulator 16.
Solenoid directional control valve II 4 is three position four-way directional control valve, and pilot operated directional control valve 17 is two-position two-way hydraulic control reversal valve.
The diameter of choke valve 18 is less than 0.5 millimeter, prevents from flowing to the right hydraulic control of pilot operated directional control valve 17 from proportion magnetic valve 12
Mouth c hydraulic oil is revealed excessively from choke valve 18.
Annexation be present between above-mentioned each Hydraulic Elements, connected by pipeline or oil pipe.
When the platform of aerial work platform needs to rise, II 4 left position of solenoid directional control valve obtains electric, is switched to the work of left position, behaviour
Make proportion magnetic valve 12, driven by engine hydraulic pump 9 operates, and hydraulic pump 9 pumps out hydraulic oil from fuel tank 8, and then hydraulic oil leads to
Cross proportion magnetic valve 12, into solenoid directional control valve II 4 oil inlet P and from its second oil-out B flow out, finally by check valve
II 2, the rodless cavity of big arm cylinder 1 is flow to, the hydraulic cylinder of big arm cylinder 1 stretches out, and large arm 18 raises, the platform of aerial work platform
Rise, by controlling the flow of proportion magnetic valve 12, come the rate of climb of control platform, overflow valve I 3 and the formation of check valve II 2
External control balanced valve, the deadweight because of large arm 18 and big arm cylinder 1 is prevented, the danger for causing big arm cylinder 1 to drop；Energy storage oil cylinder 5 is logical
Check valve III 6 is crossed from the oil suction of fuel tank 8, saves hydraulic oil.
When the platform of aerial work platform needs to decline, the right position of solenoid directional control valve II 4 obtains electric, is switched to right position work,
Proportion magnetic valve 12 is operated, hydraulic pump 9 pumps out hydraulic oil from fuel tank 8, then hydraulic oil passing ratio magnetic valve 12, into electricity
The oil inlet P of magnetic reversal valve II 4 and the rod chamber that big arm cylinder 1 is flow to from its first oil-out A, while from solenoid directional control valve II
The hydraulic oil of 4 the first oil-out A outflows enters the hydraulic control end a of overflow valve I 3, overflow valve I 3 is turned on, in big arm cylinder 1
Hydraulic oil enters the first oil-out B of solenoid directional control valve II 4, then the oil return inlet T stream from solenoid directional control valve II 4 by overflow valve I 3
To fuel tank 8, big arm cylinder 1 is shunk, and large arm 18 declines, and the platform of aerial work platform declines, and energy storage oil cylinder 5 declines with large arm 18
Compressed, the gravitional force that now platform has is changed into hydraulic energy, and the hydraulic oil in the rodless cavity of energy storage oil cylinder 5 passes through check valve
IV 15 flow to accumulator 16.
It is sustainable to be pressed oil for the topping up of accumulator 16 with the lifting repeatedly of platform during work, according to straight-arm, crank arm type high-altitude
Job platform load-carrying adds arm support weight m=5kN, can all have energy regenerating because the platform of aerial work platform lifts every time, by height
Stroke h=15m, t=100 time estimation is lifted daily, is released energy as G, G=m * h*t=5*10*15*100=7500kJ energy during decline
Measure recovery utilization rate to calculate by 50%, then every straight-arm, crank type aerial working platform save 3750kJ daily, improve the energy
Utilization rate.
When the platform of aerial work platform rises or declined, the hydraulic oil of passing ratio magnetic valve 12 enters hydraulic control
The right hydraulic control mouth c of reversal valve 17, the right position work of pilot operated directional control valve 17, pilot operated directional control valve 17 are not turned on；When the unloaded fortune of hydraulic pump 9
When turning, the hydraulic oil of the oil-out of hydraulic pump 9 enters the left hydraulic control mouth b of pilot operated directional control valve 17, and 17 left position of pilot operated directional control valve works,
Pilot operated directional control valve 17 turns on, and the hydraulic oil of the oil-out of hydraulic pump 9 enters fuel tank from pilot operated directional control valve 17, reduces energy consumption；Overflow
Valve II 14 can allow the pressure release of energy storage oil cylinder 5, but remain at certain pressure in energy storage oil cylinder 5, it is necessary to during maintenance system, electricity
The right position work of magnetic reversal valve I 13, the left position of pilot operated directional control valve 17 work, and the hydraulic oil in accumulator 16 passes through solenoid directional control valve
I 13, pilot operated directional control valve 17 flows back to fuel tank, realizes complete pressure release.
Claims (10)
1. a kind of aerial work platform hydraulic energy-saving system with no-load protection, including aerial work platform body, large arm, liquid
Press pump, fuel tank, the big arm cylinder of driving large arm lifting is set between aerial work platform body and large arm, and big arm cylinder is double
Action oil cylinder, fuel tank are connected with the oil inlet of hydraulic pump, it is characterised in that：Set between aerial work platform body and large arm
Lifted and flexible energy storage oil cylinder with large arm；Aerial work platform hydraulic energy-saving system with no-load protection also includes ratio electricity
Magnet valve, solenoid directional control valve I, accumulator, solenoid directional control valve II, check valve III, check valve IV, pilot operated directional control valve and choke valve；Liquid
The oil inlet with proportion magnetic valve, the oil inlet of solenoid directional control valve I are connected the oil-out of press pump respectively, and solenoid directional control valve I goes out
Hydraulic fluid port is connected with accumulator, and the oil-out of proportion magnetic valve is connected with the oil inlet of solenoid directional control valve II, solenoid directional control valve II
Oil return opening is connected with fuel tank, and the first oil-out of solenoid directional control valve II and the rod chamber of big arm cylinder connect, solenoid directional control valve II
The second oil-out and big arm cylinder rodless cavity connect；Energy storage oil cylinder is one-way cylinder, and the rodless cavity of energy storage oil cylinder is distinguished
Oil-out, the oil inlet of check valve IV with check valve III are connected, and the oil inlet of check valve III is connected with fuel tank, check valve IV
Oil-out is connected with accumulator；
The oil inlet with solenoid directional control valve I, the oil-out of hydraulic pump are connected the oil inlet of pilot operated directional control valve respectively, pilot operated directional control valve
Oil-out be connected with fuel tank, the oil-feed of the left hydraulic control mouth of the pilot operated directional control valve oil-out with hydraulic pump, solenoid directional control valve I respectively
Mouthful connection, the right hydraulic control mouth of pilot operated directional control valve be connected with the oil-out of proportion magnetic valve respectively, the connection of the oil inlet of choke valve, is saved
The oil-out of stream valve is connected with fuel tank.
2. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：In list
To between valve I and solenoid directional control valve I, pressure switch is set.
3. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 2, it is characterised in that：Accumulation of energy
Oil cylinder is connected with overflow valve II.
4. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：Accumulation of energy
The same side parallel arranged of oil cylinder and big arm cylinder in large arm.
5. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：In liquid
Check valve I is provided between press pump and proportion magnetic valve.
6. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：In electricity
Balanced valve is provided between magnetic reversal valve II and big arm cylinder, balanced valve includes overflow valve I and check valve II, overflow valve I, check valve
II oil inlet is connected with the second oil-out of solenoid directional control valve II respectively, overflow valve I it is in parallel with check valve II and respectively with greatly
The rodless cavity connection of arm oil cylinder, the hydraulic control end of overflow valve I is connected with the first oil-out of solenoid directional control valve II.
7. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：In list
To the oil-out connection safety valve of valve I, the unloading port of safety valve is connected with fuel tank.
8. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：Electromagnetism
Reversal valve I is the normally closed inserted valve of two-way, which is provided with emergent handle.
9. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：Electromagnetism
Reversal valve II is three position four-way directional control valve, and pilot operated directional control valve is two-position two-way hydraulic control reversal valve.
10. there is the aerial work platform hydraulic energy-saving system of no-load protection as claimed in claim 1, it is characterised in that：Section
The diameter for flowing valve is less than 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828110.6U CN206872378U (en) | 2017-07-10 | 2017-07-10 | A kind of aerial work platform hydraulic energy-saving system with no-load protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828110.6U CN206872378U (en) | 2017-07-10 | 2017-07-10 | A kind of aerial work platform hydraulic energy-saving system with no-load protection |
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| Publication Number | Publication Date |
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| CN206872378U true CN206872378U (en) | 2018-01-12 |
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ID=61329855
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720828110.6U Active CN206872378U (en) | 2017-07-10 | 2017-07-10 | A kind of aerial work platform hydraulic energy-saving system with no-load protection |
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| CN (1) | CN206872378U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970052A (en) * | 2018-09-27 | 2018-12-11 | 燕山大学 | A kind of hydraulic basketball stands base device of modularization |
| CN109139583A (en) * | 2018-10-23 | 2019-01-04 | 河南垣发专用车辆集团有限公司 | A kind of forklift hydraulic control system |
| CN111197602A (en) * | 2020-01-14 | 2020-05-26 | 宝鸡石油机械有限责任公司 | Seabed base plate hydraulic system and energy-saving control method of system |
| CN111623002A (en) * | 2020-06-28 | 2020-09-04 | 河南卫华特种车辆有限公司 | Multipurpose emergency power unit |
| CN113845032A (en) * | 2021-11-30 | 2021-12-28 | 杭叉集团股份有限公司 | Energy-saving hydraulic system for telescopic arm of electric front crane |
-
2017
- 2017-07-10 CN CN201720828110.6U patent/CN206872378U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970052A (en) * | 2018-09-27 | 2018-12-11 | 燕山大学 | A kind of hydraulic basketball stands base device of modularization |
| CN109139583A (en) * | 2018-10-23 | 2019-01-04 | 河南垣发专用车辆集团有限公司 | A kind of forklift hydraulic control system |
| CN109139583B (en) * | 2018-10-23 | 2024-05-17 | 河南垣发专用车辆集团有限公司 | Hydraulic control system for forklift |
| CN111197602A (en) * | 2020-01-14 | 2020-05-26 | 宝鸡石油机械有限责任公司 | Seabed base plate hydraulic system and energy-saving control method of system |
| CN111623002A (en) * | 2020-06-28 | 2020-09-04 | 河南卫华特种车辆有限公司 | Multipurpose emergency power unit |
| CN113845032A (en) * | 2021-11-30 | 2021-12-28 | 杭叉集团股份有限公司 | Energy-saving hydraulic system for telescopic arm of electric front crane |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190919 Address after: 453400 West Section 137 Renmin Road, Changyuan County, Xinxiang City, Henan Province Patentee after: Henan Jianghe Special Vehicle Technology Co., Ltd. Address before: 453400 west section of Renmin Road, Changyuan County, Henan, Xinxiang Patentee before: Henan River Special Vehicle Co., Ltd. |
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| TR01 | Transfer of patent right |