CN211525262U - Novel high-horsepower tractor lifter - Google Patents
Novel high-horsepower tractor lifter Download PDFInfo
- Publication number
- CN211525262U CN211525262U CN201921917515.2U CN201921917515U CN211525262U CN 211525262 U CN211525262 U CN 211525262U CN 201921917515 U CN201921917515 U CN 201921917515U CN 211525262 U CN211525262 U CN 211525262U
- Authority
- CN
- China
- Prior art keywords
- assembly
- sub
- subassembly
- lifting arm
- valve
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 15
- 230000007935 neutral effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The utility model belongs to the technical field of the lifting mechanism, especially, be a novel high horsepower tractor lifting mechanism, including the lifting mechanism base, be equipped with distributor subassembly on the lifting mechanism base, control subassembly, position feedback subassembly, force feedback subassembly, multiple unit valve, filter subassembly, lifting arm axle, be equipped with the lifting arm axle on the lifting mechanism base, the lifting arm is equipped with at lifting arm axle both ends, be equipped with the parallel key on the lifting arm, the parallel key is connected with the lifting arm axle, the epaxial shaft clamp plate that is equipped with of lifting arm, lifting mechanism base rear end is equipped with pull rod support subassembly, be equipped with position feedback subassembly on the lifting mechanism base, the lifting arm axle is connected with distributor subassembly transmission through position feedback subassembly. The utility model discloses compact structure is light, alleviates assembly personnel's intensity of labour, has practiced thrift the complete machine and has arranged the space, has improved the operating efficiency, has improved the fuel economy of complete machine simultaneously.
Description
Technical Field
The utility model relates to a lifting mechanism technical field especially relates to a novel high horse power tractor lifting mechanism.
Background
At present, the domestic tractor lifter with more than 90 horsepower mainly comprises a lifter base, a lifting arm shaft, a distributor subassembly and an upper pull rod support subassembly. The structure is characterized in that: the lifter base passes through bolted connection on the gearbox as independent oil tank and support base, promote casing rear end macropore and be equipped with the lifting arm axle, lifting arm axle both ends are through flat key fixed connection lifting arm, connect through high feedback connecting rod between lifting arm axle and the distributor subassembly and constitute high stop device, the distributor subassembly is arranged outside the casing through the outside support, the hydraulic oil in the lifter base is acquireed through the oil pump to the distributor subassembly, adopt the manual reversing mechanism control hydro-cylinder of on-off to advance out oil, thereby control the lifter and go up and down, distributor subassembly internally mounted forced switching valve, when ground is harder or takes place "the car" the, realize that agricultural implement digs into soil through the forced pressure of saving oneself, this kind of structure main advantage lies in simple structure, it is convenient to maintain.
However, with the continuous development of modern agriculture, the technology of a tractor chassis is continuously upgraded, the requirements of people on operation precision, operation comfort, economy and the like are higher and higher, the defects of the structure are gradually highlighted, mainly manifested by poor cleanliness of a blocking valve, abrasion and oil leakage of a reversing valve, a large and heavy shell, difficulty in ensuring the consistency of operation depth by adopting a switch type manual reversing mode, the operation quality mainly depends on the experience level of an agricultural machine hand, in addition, a strong pressure switching function needs a driver to get off the tractor for operation, the operation in a paddy field is very inconvenient, and the rough operation mode is not accepted gradually, so that the novel high-horsepower tractor lifter is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a novel high-horsepower tractor lifter.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel high-horsepower tractor lifter comprises a lifter base, wherein a distributor sub-assembly, a control sub-assembly, a position feedback sub-assembly, a force feedback sub-assembly, a multi-way valve, a filter sub-assembly, a lifting arm and a lifting arm shaft are arranged on the lifter base, the lifting arm shaft is arranged at two ends of the lifting arm shaft, a flat key is arranged on the lifting arm and connected with the lifting arm shaft, a shaft pressing plate is arranged on the lifting arm shaft, an upper pull rod support sub-assembly is assembled at the rear end of the lifter base, the position feedback sub-assembly is arranged on the lifter base, the lifting arm shaft is in transmission connection with the distributor sub-assembly through the position feedback sub-assembly, the force feedback sub-assembly is arranged on the lifter base and is in transmission connection with the upper pull rod support sub-assembly through the force feedback sub-assembly, and the filter sub-assembly is arranged on the distributor sub-assembly, the multi-way valve support is hermetically arranged at the upper part of the rear end of the lifter base, an oil pipe is arranged on the multi-way valve support, one end of the oil pipe is fixedly connected with the distributor sub-assembly, and the multi-way valve is hermetically arranged at the upper part of the multi-way valve support.
Preferably, the upper pull rod support subassembly is provided with a torsion bar support seat, a torsion bar spring and a force adjusting support seat, the force adjusting support seat is provided with a spline, the torsion bar spring is connected with the spline, and the torsion bar support seat limits the force adjusting support seat to feed back the angle.
Preferably, the distributor subassembly mainly comprises a lift valve subassembly, a control subassembly, an electromagnetic valve subassembly, a descending speed regulating valve subassembly and a pressure control valve subassembly, wherein the control subassembly comprises a control shell, a control shell cover, a position control cam shaft, a force control cam shaft, a position feedback cam shaft, a force feedback cam shaft, a position control handle, a force control handle, a position feedback handle, a force feedback handle, a balancing rod, a position control limit friction plate, a force control limit friction plate and a cam pin shaft, the lift valve subassembly is hermetically mounted on a lifter base, a guide end part of a main valve core of the lift valve subassembly penetrates through the control shell, the lift valve subassembly is connected with the balancing rod through the cam pin shaft, and a cam structure of the cam pin shaft is in contact with the balancing rod.
Preferably, two bearing bushes are arranged on the lifter base, and the lifting arm shaft passes through the two bearing bushes on the lifter base.
Preferably, the multi-way valve support is fixedly installed on the lifter base through a first bolt, and the multi-way valve is fixedly connected with the multi-way valve support through a second bolt.
Preferably, the lifting arm is connected with the shaft pressure plate through a third bolt.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a novel high horsepower tractor lifting mechanism, poppet valve subassembly is through the control cam axle of the force control in the control subassembly and the position of balancing pole control case, with external force, position feedback subassembly/combined action, realize operation tilling depth resistance control, when the resistance increases, the upper tie rod pushes down power regulation support and takes place the angular rotation under the resistance effect, power regulation support passes through the force feedback subassembly and transmits angle signal to the force feedback cam axle, the force feedback cam axle pushes away the case through the balancing pole and impels, the oil feed promotes, until the resistance reduces to within the setting value, receive the signal, the case returns to the neutral, stop the fuel feeding, this kind of structure has guaranteed the load of engine evenly, avoid "holding car", and has improved fuel economy; the electromagnetic valve sub-assembly replaces the original strong pressure switching valve, so that the operation in the cab is realized, and the operation comfort, convenience and working efficiency of a driver are improved.
The utility model discloses compact structure is light, alleviates assembly personnel's intensity of labour, has practiced thrift the complete machine and has arranged the space, has improved the operating efficiency, has improved the fuel economy of complete machine simultaneously.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a schematic view of the structure of the lift arm shaft of the present invention;
FIG. 4 is a schematic diagram of a distributor sub-assembly of the present invention;
fig. 5 is a schematic structural diagram of a control subassembly in the present invention.
In the figure: 1. a riser base; 2. a dispenser subassembly; 3. a force feedback sub-assembly; 4. a bit feedback sub-assembly; 5. a multi-way valve is supported; 6. a multi-way valve; 7. a lift arm; 8. a force adjustment support; 9. a torsion bar spring; 10. a torsion bar supporting seat; 11. a filter sub-assembly; 12. an oil pipe; 13. a lift arm shaft; 14. a flat bond; 15. a shaft pressing plate; 16. controlling the sub-assembly; 17. a descending speed regulating valve sub-assembly; 18. a poppet valve subassembly; 19. the electromagnetic valve sub-assembly; 20. a pressure control valve sub-assembly; 21. a control housing; 22. a force controlled camshaft; 23. position control of the camshaft; 24. force control limit friction plates; 25. a force control handle; 26. a position control limit friction plate; 27. a position control handle; 28. a cam pin shaft; 29. a balancing pole; 30. a control housing cover; 31. a position feedback camshaft; 32. a force feedback camshaft; 33. a position feedback handle; 34. a force feedback handle; 35. and the upper pull rod support is assembled.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a novel high-horsepower tractor lifter comprises a lifter base 1, wherein a distributor subassembly 2, a control subassembly 16, a position feedback subassembly 4, a force feedback subassembly 3, a multi-way valve 6, a filter subassembly 11, a lifting arm 7 and a lifting arm shaft 13 are arranged on the lifter base 1, the lifting arm shaft 13 is arranged at two ends of the lifting arm shaft 13, a flat key 14 is arranged on the lifting arm 7, the flat key 14 is connected with the lifting arm shaft 13, a shaft pressure plate 15 is arranged on the lifting arm shaft 13, an upper pull rod support subassembly 35 is assembled at the rear end of the lifter base 1, the position feedback subassembly 4 is arranged on the lifter base 1, the lifting arm shaft 13 is in transmission connection with the distributor subassembly 2 through the position feedback subassembly 4, the force feedback subassembly 3 is arranged on the lifter base 1, the distributor subassembly 2 is in transmission connection with the upper pull rod support subassembly 35 through the force feedback subassembly 3, the distributor subassembly 2 is provided with a filter subassembly 11, the upper part of the rear end of the lifter base 1 is hermetically provided with a multi-way valve support 5, the multi-way valve support 5 is provided with an oil pipe 12, one end of the oil pipe 12 is fixedly connected with the distributor subassembly 2, and the upper part of the multi-way valve support 5 is hermetically provided with a multi-way valve 6;
the upper pull rod support subassembly 35 is provided with a torsion bar support seat 10, a torsion bar spring 9 and a force adjusting support seat 8, the force adjusting support seat 8 is provided with a spline, the torsion bar spring 9 is connected with the spline, the torsion bar support seat 10 limits the feedback angle of the force adjusting support seat 8, the distributor subassembly 2 mainly comprises a lift valve subassembly 18, a control subassembly 16, an electromagnetic valve subassembly 19, a descending speed adjusting valve subassembly 17 and a pressure control valve subassembly 20, the control subassembly 16 comprises a control shell 21, a control shell cover 30, a position control camshaft 23, a force control camshaft 22, a position feedback camshaft 31, a force feedback camshaft 32, a position control handle 27, a force control handle 25, a position feedback handle 33, a force feedback handle 34, a balance rod 29, a position control limit friction plate 26, a force control limit friction plate 24, a cam pin shaft 28, the lift valve subassembly 18 is hermetically arranged on the lifter base 1, the pilot end of the main valve core of the lift valve subassembly 18 passes through the control shell 21, the lift valve subassembly 18 is connected with the balance rod 29 through the cam pin shaft 28, the cam structure of the cam pin shaft 28 is contacted with the balance rod 29, two bearing bushes are arranged on the lifter base 1, the lift arm shaft 13 is arranged on the lifter base 1 through the two bearing bushes, the multi-way valve support 5 is fixedly arranged on the lifter base 1 through a first bolt, the multi-way valve 6 is fixedly connected with the multi-way valve support 5 through a second bolt, the lift arm 7 is connected with the shaft pressure plate 15 through a third bolt, the lift valve subassembly 18 controls the position of the valve core through the force control cam shaft 22 and the balance rod 28 in the control subassembly 16 and is combined with the external force and position feedback subassembly 3/4 to realize the operation tilling depth resistance control, when the resistance is increased, the upper pull rod pushes the power adjusting support 8 to rotate under the resistance action, the force adjusting support 8 transmits an angle signal to the force feedback camshaft 32 through the force feedback sub-assembly 3, the force feedback camshaft 32 pushes the valve core to be pushed through the balance rod 28, the oil is fed and lifted until the resistance is reduced to be within a set value, the valve core returns to be neutral after receiving the signal, and the oil supply is stopped, so that the structure ensures the load of the engine to be uniform, the vehicle is prevented from being held back, and the fuel economy is improved; the solenoid valve sub-assembly 19 replaces original strong pressure diverter valve, realizes the operation in the driver's cabin, has improved driver's operation travelling comfort, convenience and work efficiency, the utility model discloses compact structure is light, alleviates assembly personnel's intensity of labour, has practiced thrift the complete machine and has arranged the space, has improved the operating efficiency, has improved the fuel economy of complete machine simultaneously.
The working principle is as follows: the lifter base 1 replaces an original shell oil tank, the structure is compact and light, the labor intensity of an assembler is reduced, the arrangement space of the whole machine is saved, the operation efficiency is improved, and meanwhile, the fuel economy of the whole machine is improved; the poppet valve subassembly 18 controls the position of the valve core through a position control camshaft 23 and a balance rod 29 in a control subassembly 16, and is combined with an external position feedback subassembly 4 to realize point-to-point continuous control of the lifting position, the structure corresponds to a fixed lifting position at each operating position, the operation quality is determined without depending on the experience of agricultural hands, the stability of the operation quality can be ensured no matter the old agricultural hands or the new agricultural hands, the operation strength of the agricultural hands is greatly reduced, the operation efficiency is improved, the poppet valve subassembly 18 controls the position of the valve core through the force control camshaft 22 and the balance rod 28 in the control subassembly 16, and is combined with an external force and position feedback subassembly 3/4 to realize operation tilling depth resistance control, when the resistance is increased, an upper pull rod pushes a power adjusting support 8 to rotate under the action of the resistance, the power adjusting support 8 transmits an angle signal to a force feedback camshaft 32 through the force feedback subassembly 3, the force feedback camshaft 32 pushes the valve core to be pushed through the balance rod 28, oil is fed and lifted until the resistance is reduced to be within a set value, the valve core returns to the neutral position after receiving a signal, and oil supply is stopped, so that the structure ensures uniform load of the engine, avoids vehicle holding, and improves fuel economy; the electromagnetic valve sub-assembly 19 replaces the original strong pressure switching valve, so that the operation in the cab is realized, and the operation comfort, the convenience and the working efficiency of a driver are improved.
It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of this design principle, the settings of the power mechanism, the power supply system, the control system, etc. of the device are not completely described, and the details of the power mechanism, the power supply system, and the control system can be clearly known on the premise that those skilled in the art understand the principle of the present invention.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a novel high horse power tractor lifting mechanism, includes lifting mechanism base (1), its characterized in that: the automatic lifting device is characterized in that a distributor sub-assembly (2) is arranged on the lifter base (1), a control sub-assembly (16), a position feedback sub-assembly (4), a force feedback sub-assembly (3), a multi-way valve (6), a filter sub-assembly (11), a lifting arm (7) and a lifting arm shaft (13) are arranged on the lifter base (1), the lifting arm (7) is arranged at two ends of the lifting arm shaft (13), a flat key (14) is arranged on the lifting arm (7), the flat key (14) is connected with the lifting arm shaft (13), a shaft pressing plate (15) is arranged on the lifting arm shaft (13), an upper pull rod support sub-assembly (35) is assembled at the rear end of the lifter base (1), the position feedback sub-assembly (4) is arranged on the lifter base (1), and the lifting arm shaft (13) is in transmission connection with the distributor sub-assembly (2) through the position feedback sub-assembly (4), be equipped with force feedback on riser base (1) and divide assembly (3), distributor divides assembly (2) and last pull rod support to divide assembly (35) to be connected through force feedback branch assembly (3) transmission, the distributor divides the filter to divide assembly (11) to be equipped with on assembly (2), riser base (1) rear end upper portion sealed has multiple unit valve to support (5), be equipped with oil pipe (12) on multiple unit valve supports (5), the one end and the distributor of oil pipe (12) divide assembly (2) fixed connection, multiple unit valve supports (5) upper portion seal and installs multiple unit valve (6).
2. The novel high horsepower tractor hoist of claim 1, wherein: the upper pull rod support subassembly (35) is provided with a torsion bar support seat (10), a torsion bar spring (9) and a force adjusting support seat (8), the force adjusting support seat (8) is provided with a spline, the torsion bar spring (9) is connected with the spline, and the torsion bar support seat (10) limits the force adjusting support seat (8) to feed back the angle.
3. The novel high horsepower tractor hoist of claim 1, wherein: the distributor sub-assembly (2) mainly comprises a lifting valve sub-assembly (18), a control sub-assembly (16), an electromagnetic valve sub-assembly (19), a descending speed regulating valve sub-assembly (17) and a pressure control valve sub-assembly (20), wherein the control sub-assembly (16) comprises a control shell (21), a control shell cover (30), a position control cam shaft (23), a force control cam shaft (22), a position feedback cam shaft (31), a force feedback cam shaft (32), a position control handle (27), a force control handle (25), a position feedback handle (33), a force feedback handle (34), a balancing rod (29), a position control limit friction plate (26), a force control limit friction plate (24) and a cam pin shaft (28), the lifting valve sub-assembly (18) is hermetically installed on a lifter base (1), and a main valve core guide end part of the lifting valve sub-assembly (18) penetrates through the control shell (21), and the lift valve subassembly (18) is connected with the balance rod (29) through a cam pin shaft (28), and the cam structure of the cam pin shaft (28) is in contact with the balance rod (29).
4. The novel high horsepower tractor hoist of claim 1, wherein: the lifting arm shaft (13) is arranged on the lifter base (1) through the two bearing bushes.
5. The novel high horsepower tractor hoist of claim 1, wherein: the multi-way valve support (5) is fixedly installed on the lifter base (1) through a first bolt, and the multi-way valve (6) is fixedly connected with the multi-way valve support (5) through a second bolt.
6. The novel high horsepower tractor hoist of claim 1, wherein: the lifting arm (7) is connected with the shaft pressure plate (15) through a third bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917515.2U CN211525262U (en) | 2019-11-08 | 2019-11-08 | Novel high-horsepower tractor lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917515.2U CN211525262U (en) | 2019-11-08 | 2019-11-08 | Novel high-horsepower tractor lifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211525262U true CN211525262U (en) | 2020-09-18 |
Family
ID=72443049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921917515.2U Expired - Fee Related CN211525262U (en) | 2019-11-08 | 2019-11-08 | Novel high-horsepower tractor lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211525262U (en) |
-
2019
- 2019-11-08 CN CN201921917515.2U patent/CN211525262U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0878440A3 (en) | Tilt control device for forklift | |
| CN211525262U (en) | Novel high-horsepower tractor lifter | |
| CN204003711U (en) | Fork truck collaborates to hoist valve block | |
| CN103016431B (en) | The hydraulic system of all-hydraulic transplanter | |
| CN201679783U (en) | Pilot oil supply system of loader | |
| EP0108347A1 (en) | Hydraulic system for a tractor or equivalent | |
| CN103004315B (en) | A kind of double-layer multifunctional vehicle frame of field operating vehicle | |
| CN206666411U (en) | The control device thrown according to bedding and padding thickness in fermentation tank and usage time automatic turning | |
| CN211509755U (en) | Novel tractor lifting mechanism | |
| CN210565406U (en) | Hydraulic system of agricultural tricycle | |
| CN205742338U (en) | The hydraulic system of wheel loader | |
| CN111802010B (en) | Hydraulic pump postposition type tractor electrohydraulic suspension system | |
| CN101715660B (en) | Multifunctional workover rig | |
| CN203020074U (en) | All-hydraulic driving system of lifting type rice transplanter | |
| CN211406773U (en) | Multifunctional management and protection machine for forest land | |
| CN202971366U (en) | Full-hydraulic drive system of seedling-planting machine | |
| CN101823414B (en) | Multifunctional carriage of crawler tractor | |
| CN108575124B (en) | Control device of double-shaft layered soil-cutting rotary cultivator | |
| CN112096700A (en) | Electric control strong pressure valve and hydraulic control system | |
| CN220078546U (en) | Fly arm structure with independent control function and overhead working truck | |
| CN221857147U (en) | Distribution type hydraulic control system and greening comprehensive maintenance vehicle | |
| JP3078995B2 (en) | Operation structure for work equipment of work vehicle | |
| CN214627943U (en) | Novel medium horsepower tractor hydraulic lifter | |
| CN215719866U (en) | Tractor | |
| JP2007139148A (en) | Hydraulic device of work machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A new type of high horsepower tractor lifter Effective date of registration: 20211119 Granted publication date: 20200918 Pledgee: Weifang Bank Co.,Ltd. Fenghuangshan sub branch Pledgor: SHANDONG GAHEAD DRIVE TECH CO.,LTD. Registration number: Y2021980012764 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221214 Granted publication date: 20200918 Pledgee: Weifang Bank Co.,Ltd. Fenghuangshan sub branch Pledgor: SHANDONG GAHEAD DRIVE TECH CO.,LTD. Registration number: Y2021980012764 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 |