CN107975671B - Intelligent lubricating device monitor control system - Google Patents

Intelligent lubricating device monitor control system Download PDF

Info

Publication number
CN107975671B
CN107975671B CN201711463036.3A CN201711463036A CN107975671B CN 107975671 B CN107975671 B CN 107975671B CN 201711463036 A CN201711463036 A CN 201711463036A CN 107975671 B CN107975671 B CN 107975671B
Authority
CN
China
Prior art keywords
fuel
displaced
cylinder
lubricant oil
monitor control
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.)
Active
Application number
CN201711463036.3A
Other languages
Chinese (zh)
Other versions
CN107975671A (en
Inventor
明俊莹
黄禺
张立娟
洪长立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Junyueweixin Engineering Technology Co Ltd
Beijing Zhongyan Construction Engineering Co Ltd
Original Assignee
Beijing Junyueweixin Engineering Technology Co Ltd
Beijing Zhongyan Construction Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Junyueweixin Engineering Technology Co Ltd, Beijing Zhongyan Construction Engineering Co Ltd filed Critical Beijing Junyueweixin Engineering Technology Co Ltd
Priority to CN201711463036.3A priority Critical patent/CN107975671B/en
Publication of CN107975671A publication Critical patent/CN107975671A/en
Application granted granted Critical
Publication of CN107975671B publication Critical patent/CN107975671B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N19/00Lubricant containers for use in lubricators or lubrication systems
    • F16N19/003Indicating oil level
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N27/00Proportioning devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N29/00Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The present invention provides a kind of Intelligent lubricating device monitor control systems comprising: the lubricant oil case that can be compressed along the vertical direction, end face is plane thereon, and lower end has one first taper oil outlet;Fuel-displaced cylinder below the lubricant oil case is set, and center is vertically arranged with an elastic cylinder, and the elastic cylinder forms a fuel-displaced duct;Outer cover is located at the top of the lubricant oil case;And controller;Wherein, it is located in the outer cover above the lubricant oil case and is provided with lubricating oil extrusion component;Being horizontally disposed in fuel-displaced cylinder has multiple annular baffles, limits multiple ring packing cavitys, and the lateral wall of the fuel-displaced cylinder is circumferentially fixed an annular airflow cover, is connected to a pumping by a tracheae and inflates dual-purpose pump;Controller is electrically connected with linear actuator, pumping inflation dual-purpose pump.Intelligent lubricating device monitor control system provided by the invention carries out real-time monitoring to lubricating oil, without human intervention, being capable of oiling at regular time and quantity.

Description

Intelligent lubricating device monitor control system
Technical field
The invention belongs to lubricating utensil fields.It is more particularly related to a kind of Intelligent lubricating device monitoring control System.
Background technique
With the rapid development of China's oil chemical industry intellectually and automatically, enterprise is safe and stable to process units Continuous production more stringent requirements are proposed, therefore, the daily maintenance of appliance arrangement works increasingly by the weight of enterprise Depending on.And corrective maintenance head lubricates again, the selection of lubricating system, the quality of lubricant effect, safe and stable, the continuous life to device Direct influence will be generated by producing.
For the lubrication of Technologies in Petrochemical Industry mainly based on manual operation, manual operation leans on the work of worker to pass through substantially at present It tests, injection grease is very few not to have enough lubricating actions, and grease injection is excessive, and height can be generated in motor runs at high speed Temperature causes grease aging, generates lump, is easy therefore the abrasion of motor bearings ball occur, expanded motor workload causes Whole motor damage, artificial maintenance has randomness, and service time can not be accurately held, and some are in high temperature and pressure Working environment is not appropriate for artificial greasing, therefore equipment is chronically at unlubricated state with long later.Therefore, manual operation is not The lubricating requirement of petrochemical enterprise can be fully met.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of Intelligent lubricating device monitor control systems, carry out to lubricating oil real-time Monitoring, without human intervention, being capable of oiling at regular time and quantity.
In order to realize these purposes and other advantages according to the present invention, a kind of Intelligent lubricating device monitoring control is provided System comprising:
The lubricant oil case that can be compressed along the vertical direction, end face is plane thereon, and there is one first taper to go out for lower end Oilhole;
Fuel-displaced cylinder below the lubricant oil case, sealed cylinder closed at both ends, and the fuel-displaced cylinder are set Center vertical be provided with an elastic cylinder, the elastic cylinder forms a fuel-displaced duct, the upper end in the fuel-displaced duct and institute The connection of the first taper oil outlet is stated, lower end is provided with one second taper oil outlet;
Outer cover, is located at the top of the lubricant oil case, and the bottom end of the outer cover and the fuel-displaced cylinder is outer Side wall is fixed;
And controller;
Wherein,
It is located above the lubricant oil case in the outer cover and is provided with lubricating oil extrusion component comprising is fixed on The outer cover is interior and is located at the linear actuator of the surface of the lubricant oil case and passes through a vertical flexible axis connection In the adsorption plate of the output end of the linear actuator, the bottom face of the adsorption plate is provided with the multiple and lubricant oil The sucker of the top end face absorption of case;
Being horizontally disposed in the fuel-displaced cylinder has multiple annular baffles, multiple annular baffles and the fuel-displaced duct and institute The inner wall for stating fuel-displaced cylinder limits multiple ring packing cavitys, and the lateral wall of the fuel-displaced cylinder circumferentially offers multiple groups and the annular The corresponding through-hole of seal cavity;Be respectively and fixedly provided with an annular airflow cover outside through-hole described in every group, the annular airflow cover with it is described The lateral wall of fuel-displaced cylinder is tightly connected, and the annular airflow cover is connected to a pumping by a tracheae and inflates dual-purpose pump;
The controller is electrically connected with the linear actuator, pumping inflation dual-purpose pump.
Preferably, in the Intelligent lubricating device monitor control system, one layer of explosion-proof timber is provided in the outer cover The bed of material.
Preferably, in the Intelligent lubricating device monitor control system, the outer cover and the lubricant oil case Between be additionally provided with multiple compressed springs.
Preferably, in the Intelligent lubricating device monitor control system,
The lower end of the lubricant oil case has a conical boss;
The upper end of the fuel-displaced cylinder has a conical indentation to match with the conical boss, and the conical indentation Center at be provided with one first taper oil outlet holding tank.
Preferably, in the Intelligent lubricating device monitor control system, a valve is provided on each tracheae.
Preferably, in the Intelligent lubricating device monitor control system,
The bottom face of the fuel-displaced cylinder is lifted up to form an accommodation space at the elastic cylinder position;
There is one second bellmouth opening tool comprising cut with scissors among one with the elastic cylinder side wall in the accommodation space The baffle that connects is arranged in the iron block above the baffle and being located in the accommodation space and is located at the iron block and the appearance The reset spring received between space is located at the top of second bellmouth wherein the baffle has an occlusion part.
Preferably, in the Intelligent lubricating device monitor control system, further includes:
The side of the adsorption plate is arranged in displacement sensor, for detect the adsorption plate shift value and by its It is sent to controller;
First flow sensor is arranged on the first taper oil outlet, and the lubricant oil case that will test Fuel-displaced flow value is sent to controller;
Second flow sensor is arranged on the second taper oil outlet, and the practical oiling flow that will test Value is sent to controller;
The upper end in the fuel-displaced duct is arranged in liquid level sensor, and the level value that will test is sent to controller.
The present invention is include at least the following beneficial effects:
1, lubricant oil case can compress along the vertical direction, lubricating oil can wherein will use completely, and will not be due to profit Lubricating oil exits into air, causes security risk;
2, lubricant oil case and fuel-displaced cylinder are cooperatively connected by boss and recess, and profit can be replaced when lubricating oil is used up Lubricating oil storage case;
3, it is provided with lubricating oil in outer cover and extrudes component, the opening and closing by controlling linear actuator may be implemented out Oil is at regular time and quantity;
4, fuel-displaced duct is formed by elastic cylinder, and the opening and closing of inflation dual-purpose pump are evacuated by control, adjustable The volume of ring packing cavity adjusts practical fuel-displaced flow so that fuel-displaced duct broadens or narrows in this way.
5, by being provided with displacement sensor, flow sensor and liquid level sensor, it can be monitored in real time and control and is fuel-displaced Amount and in time replacement lubricant oil case.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of Intelligent lubricating device monitor control system provided by the invention;
Fig. 2 is the partial enlargement signal of one embodiment of Intelligent lubricating device monitor control system provided by the invention Figure.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text Word can be implemented accordingly.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and is not the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention System.
As shown in Figure 1 to Figure 2, the present invention provides a kind of Intelligent lubricating device monitor control system comprising:
The lubricant oil case that can be compressed along the vertical direction, end face is plane thereon, and there is one first taper to go out for lower end Oilhole;
Fuel-displaced cylinder below the lubricant oil case, sealed cylinder closed at both ends, and the fuel-displaced cylinder are set Center vertical be provided with an elastic cylinder, the elastic cylinder forms a fuel-displaced duct, the upper end in the fuel-displaced duct and institute The connection of the first taper oil outlet is stated, lower end is provided with one second taper oil outlet;
Outer cover, is located at the top of the lubricant oil case, and the bottom end of the outer cover and the fuel-displaced cylinder is outer Side wall is fixed;
And controller;
Wherein,
It is located above the lubricant oil case in the outer cover and is provided with lubricating oil extrusion component comprising is fixed on The outer cover is interior and is located at the linear actuator of the surface of the lubricant oil case and passes through a vertical flexible axis connection In the adsorption plate of the output end of the linear actuator, the bottom face of the adsorption plate is provided with the multiple and lubricant oil The sucker of the top end face absorption of case;
Being horizontally disposed in the fuel-displaced cylinder has multiple annular baffles, multiple annular baffles and the fuel-displaced duct and institute The inner wall for stating fuel-displaced cylinder limits multiple ring packing cavitys, and the lateral wall of the fuel-displaced cylinder circumferentially offers multiple groups and the annular The corresponding through-hole of seal cavity;Be respectively and fixedly provided with an annular airflow cover outside through-hole described in every group, the annular airflow cover with it is described The lateral wall of fuel-displaced cylinder is tightly connected, and the annular airflow cover is connected to a pumping by a tracheae and inflates dual-purpose pump;
The controller is electrically connected with the linear actuator, pumping inflation dual-purpose pump.
When pumping inflation dual-purpose pump opens extraction pattern, the intracorporal air of annular seal space tails off, and air pressure is lower, then elastic Cylinder is heaved outward, and fuel-displaced duct broadens;When pumping inflation dual-purpose pump opens modes of inflation, the intracorporal air of annular seal space becomes More, air pressure is got higher, then elastic cylinder inwardly retracts, and fuel-displaced duct narrows;It is realized by changing the width in fuel-displaced duct in this way The control of practical oiling flow.
The air pressure of each ring packing cavity can be made identical, can also be different.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention, it is provided in the outer cover One layer of explosion-proof timber bed of material can prevent from exploding in oil leak, reduce loss.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention, the outer cover and the profit Multiple compressed springs are additionally provided between lubricating oil storage case, what compressed spring caused when can start suddenly to avoid linear actuator The mutation of flow of lubrication.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention, the lubricant oil case Lower end there is a conical boss;
The upper end of the fuel-displaced cylinder has a conical indentation to match with the conical boss, and the conical indentation Center at be provided with one first taper oil outlet holding tank.
In this way, lubricant oil case can be stably connected with fuel-displaced cylinder, and replace conveniently.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention, set on each tracheae It is equipped with a valve, can individually control the air pressure of each ring packing cavity, realizes the accurate control of flow.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention,
The bottom face of the fuel-displaced cylinder is lifted up to form an accommodation space at the elastic cylinder position;
There is one second bellmouth opening tool comprising cut with scissors among one with the elastic cylinder side wall in the accommodation space The baffle that connects is arranged in the iron block above the baffle and being located in the accommodation space and is located at the iron block and the appearance The reset spring received between space is located at the top of second bellmouth wherein the baffle has an occlusion part.
Since gravity is pressed downward the occlusion part when outflow of lubrication oil, so that shape between occlusion part and second bellmouth At outflow of lubrication oil channel;When fuel-displaced duct is blocked since ring packing cavity is inflated, then in iron block gravity and reset Under the spring return effect of spring, occlusion part, which is lifted up, blocks second bellmouth.
In one embodiment of Intelligent lubricating device monitor control system provided by the invention, further includes:
The side of the adsorption plate is arranged in displacement sensor, for detect the adsorption plate shift value and by its It is sent to controller;
First flow sensor is arranged on the first taper oil outlet, and the lubricant oil case that will test Fuel-displaced flow value is sent to controller;
Second flow sensor is arranged on the second taper oil outlet, and the practical oiling flow that will test Value is sent to controller;
The upper end in the fuel-displaced duct is arranged in liquid level sensor, and the level value that will test is sent to controller.
The lubricating oil in lubricant oil case can be calculated in the shift value that controller is sent according to displacement sensor Surplus;
The fuel-displaced flow threshold of a lubricating oil is preset in controller, and sent according to the first flow sensor The fuel-displaced flow value of lubricant oil case to control the work of linear actuator, and then adjusts the flow value, realization is closed compared with it Ring control;
Controller also receives the practical oiling flow value that second flow sensor is sent, and by itself and preset oiling Flow value is compared, and then adjusts the open and close of pumping inflation dual-purpose pump, realizes the adjustment of practical oiling flow value.
When level value be lower than the fuel-displaced duct upper end when, mobile terminal from controller to relevant staff either Server issues the prompting order of replacement lubricant oil case, Lai Shixian intelligent reminding and replacement.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited In specific details and legend shown and described herein.

Claims (7)

1. Intelligent lubricating device monitor control system characterized by comprising
The lubricant oil case that can be compressed along the vertical direction, end face is plane thereon, and lower end has one first taper oil outlet;
Fuel-displaced cylinder below the lubricant oil case is set, is sealed cylinder closed at both ends, and the fuel-displaced cylinder Center vertical is provided with an elastic cylinder, and the elastic cylinder forms a fuel-displaced duct, the upper end in the fuel-displaced duct with it is described The connection of first taper oil outlet, lower end is provided with one second taper oil outlet;
Outer cover is located at the top of the lubricant oil case, and the lateral wall of the bottom end of the outer cover and the fuel-displaced cylinder It is fixed;
And controller;
Wherein,
It is located above the lubricant oil case in the outer cover and is provided with lubricating oil extrusion component comprising is fixed on described In outer cover and positioned at the linear actuator of the surface of the lubricant oil case and institute is connected to by a vertical telescopic shaft The adsorption plate of the output end of linear actuator is stated, the bottom face of the adsorption plate is provided with multiple and the lubricant oil case The sucker of top end face absorption;
Being horizontally disposed in the fuel-displaced cylinder has multiple annular baffles, multiple annular baffles and the fuel-displaced duct and it is described go out The inner wall of oily cylinder limits multiple ring packing cavitys, and the lateral wall of the fuel-displaced cylinder circumferentially offers multiple groups and the ring packing The corresponding through-hole of cavity;Be respectively and fixedly provided with an annular airflow cover outside through-hole described in every group, the annular airflow cover with it is described fuel-displaced The lateral wall of cylinder is tightly connected, and the annular airflow cover is connected to a pumping by a tracheae and inflates dual-purpose pump;
The controller is electrically connected with the linear actuator, pumping inflation dual-purpose pump.
2. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that be provided with one in the outer cover The layer explosion-proof timber bed of material.
3. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that the outer cover and the lubrication Multiple compressed springs are additionally provided between oily storage case.
4. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that
The lower end of the lubricant oil case has a conical boss;
The upper end of the fuel-displaced cylinder has a conical indentation to match with the conical boss, and in the conical indentation One first taper oil outlet holding tank is provided at the heart.
5. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that be arranged on each tracheae There is a valve.
6. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that
The bottom face of the fuel-displaced cylinder is lifted up to form an accommodation space at the elastic cylinder position;
There is one second bellmouth opening tool comprising side walls hinged with the elastic cylinder among one in the accommodation space Baffle is arranged in the iron block above the baffle and being located in the accommodation space and is located at the iron block and receiving sky Between between reset spring, wherein the baffle have an occlusion part, be located at second bellmouth top.
7. Intelligent lubricating device monitor control system as described in claim 1, which is characterized in that further include:
The side of the adsorption plate is arranged in displacement sensor, for detecting the shift value of the adsorption plate and being sent to To controller;
First flow sensor is arranged on the first taper oil outlet, and the lubricant oil case that will test is fuel-displaced Flow value is sent to controller;
Second flow sensor is arranged on the second taper oil outlet, and the practical oiling flow value hair that will test It send to controller;
The upper end in the fuel-displaced duct is arranged in liquid level sensor, and the level value that will test is sent to controller.
CN201711463036.3A 2017-12-28 2017-12-28 Intelligent lubricating device monitor control system Active CN107975671B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711463036.3A CN107975671B (en) 2017-12-28 2017-12-28 Intelligent lubricating device monitor control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711463036.3A CN107975671B (en) 2017-12-28 2017-12-28 Intelligent lubricating device monitor control system

Publications (2)

Publication Number Publication Date
CN107975671A CN107975671A (en) 2018-05-01
CN107975671B true CN107975671B (en) 2019-05-28

Family

ID=62005265

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711463036.3A Active CN107975671B (en) 2017-12-28 2017-12-28 Intelligent lubricating device monitor control system

Country Status (1)

Country Link
CN (1) CN107975671B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11898700B2 (en) 2022-03-07 2024-02-13 Suburban Manufacturing, Llc Machine lubrication system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173550A (en) * 1985-02-22 1986-10-15 Diesel Kiki Co Grease supply device
CN201209756Y (en) * 2008-06-22 2009-03-18 王艳国 Pneumatic grease gun
CN102032432A (en) * 2010-12-22 2011-04-27 上海斐赛轴承科技有限公司 Lubrication system for feeding lubricant in type of air pressure
CN106090587A (en) * 2016-08-25 2016-11-09 武汉华星光电技术有限公司 A kind of lubricating oil oiling equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173550A (en) * 1985-02-22 1986-10-15 Diesel Kiki Co Grease supply device
CN201209756Y (en) * 2008-06-22 2009-03-18 王艳国 Pneumatic grease gun
CN102032432A (en) * 2010-12-22 2011-04-27 上海斐赛轴承科技有限公司 Lubrication system for feeding lubricant in type of air pressure
CN106090587A (en) * 2016-08-25 2016-11-09 武汉华星光电技术有限公司 A kind of lubricating oil oiling equipment

Also Published As

Publication number Publication date
CN107975671A (en) 2018-05-01

Similar Documents

Publication Publication Date Title
CN203743796U (en) Oil and air centralization lubrication device
CA2754257C (en) Fatigue testing system for prosthetic devices
US2668004A (en) Compressor
CN107975671B (en) Intelligent lubricating device monitor control system
CN104847663B (en) Portable self-regulation screw air compressor oil lubrication device
CN108006424A (en) A kind of automatic filling device of lubricating oil
CN209569134U (en) A kind of air supply system air compressor
CN109899667A (en) A kind of Small circular aperture inner wall greasing device of uniform oiling rouge
CN108870047A (en) A kind of portable textile machine oiling device
CN202708530U (en) Rubber seal oiling device
CN208431161U (en) A kind of screw air compressor being conveniently replaceable bearing
CN104806479A (en) Lubricating compensation compressor
CN212338877U (en) Precise hammer head lubricating and injection chamber local cooling system
CN204328428U (en) A kind of lubricating grease centralizedly supply device
CN210719545U (en) Automatic inflation and deflation pressure tank
CN208288293U (en) A kind of automatic spray apparatus
CN209721272U (en) A kind of guide rail lubricating oil monitoring device applied on active safety elevator
US2394486A (en) Pump
CN206478133U (en) A kind of constant velocity cardan joint Quantitative Oiling Device
CN203892159U (en) Automatic drainage device of air compressor
CN104019016A (en) Automatic drainage device of air compressor
CN205716367U (en) Electronics self-acting lubricator
CN209309637U (en) A kind of electric grease lubricating pump
US2135563A (en) Lubricating apparatus
CN203847971U (en) Automatic grease filler

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant