CN219248296U - Electric control cabinet convenient to maintain - Google Patents

Electric control cabinet convenient to maintain Download PDF

Info

Publication number
CN219248296U
CN219248296U CN202320026184.3U CN202320026184U CN219248296U CN 219248296 U CN219248296 U CN 219248296U CN 202320026184 U CN202320026184 U CN 202320026184U CN 219248296 U CN219248296 U CN 219248296U
Authority
CN
China
Prior art keywords
control cabinet
electric control
lifting
base
guide
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
CN202320026184.3U
Other languages
Chinese (zh)
Inventor
王金兰
黄明涛
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.)
Wuhu Yikong Intelligent Technology Co ltd
Original Assignee
Wuhu Yikong Intelligent Technology 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 Wuhu Yikong Intelligent Technology Co ltd filed Critical Wuhu Yikong Intelligent Technology Co ltd
Priority to CN202320026184.3U priority Critical patent/CN219248296U/en
Application granted granted Critical
Publication of CN219248296U publication Critical patent/CN219248296U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Casings For Electric Apparatus (AREA)

Abstract

The utility model discloses an electric control cabinet convenient to maintain, which comprises: the electronic control cabinet comprises a base, an electronic control cabinet body, a storage base and a pedal; the upper surface of the base is vertically arranged on the electric control cabinet body, the upper surface of the base on one side of the cabinet door of the electric control cabinet body is recessed inwards to form a containing cavity, a containing seat body which can extend out is arranged in the containing cavity in a liftable mode, a pedal fixedly connected with the top of the second lifting mechanism inside the containing seat body and capable of lifting along the vertical direction is horizontally arranged right above the containing seat body, the pedal can cover the top opening of the containing cavity, and the electric control cabinet convenient to maintain overcomes the problems that maintenance personnel need to carry or overhaul high-position elements inside the electric control cabinet body by means of tools in the prior art, so that a large amount of work preparation is needed before maintenance, the preparation work is complex, time and labor are wasted, and the maintenance efficiency is reduced.

Description

Electric control cabinet convenient to maintain
Technical Field
The utility model relates to the field of electric control cabinets, in particular to an electric control cabinet convenient to maintain.
Background
The prior electric control cabinet generally comprises a cabinet body and a plurality of rows of electric appliance elements arranged in the cabinet body, and the specifications of the electric control cabinet produced by manufacturers are different because the requirements of different customers on the specifications of the electric control cabinet are also different.
In the use process of the medium-sized or large-sized electric control cabinet (the height of the medium-sized or large-sized electric control cabinet is about 2 meters), the electric control cabinet can fail and stop working, and a maintenance worker is required to examine and overhaul the electric control cabinet. And when maintenance workers conduct investigation and maintenance on each row of electrical components in the electrical control cabinet, the highest row of electrical components are difficult to obtain, and maintenance workers need to pad feet or assist the maintenance workers to conduct investigation and maintenance by means of other tools, so that inconvenience is brought to maintenance.
Through retrieving, chinese patent No. CN201921336835.9 discloses a convenient to use's automatically controlled cabinet, including automatically controlled cabinet main part, the storage cavity has been seted up in the front of automatically controlled cabinet main part, the inner wall swing joint of storage cavity has the fly leaf, the outer wall fixedly connected with sliding block of fly leaf, the bottom fixedly connected with third pivot of fly leaf, the outer wall swing joint of third pivot has the second connecting sleeve, the sleeve plate is connected to second connecting sleeve's outer wall fixedly connected with, one side swing joint of connecting sleeve plate has the backup pad.
The inventors have found that the following problems exist in the prior art in the process of implementing the present utility model:
in the use, through the use of mutually supporting of automatically controlled cabinet main part, automatically controlled cabinet door, sliding block, fly leaf, backup pad, connection sleeve board and second connecting sleeve to maintenance personnel can overhaul the inside eminence component of automatically controlled cabinet main part with the help of the fly leaf, leads to doing a large amount of work preparation before the maintenance needs like this, and the preparation work is comparatively loaded down with trivial details, wastes time and energy, has reduced maintenance efficiency.
Therefore, the electric control cabinet convenient to maintain, which is simple to operate, saves time and labor, improves the maintenance efficiency and is capable of assisting maintenance workers to maintain electric elements with any height in the electric control cabinet through the liftable containing seat body and the foot pedal arranged on the base in the use process, is free of tools required to be carried by the workers, and is a problem to be solved.
Disclosure of Invention
Aiming at the technical problems, the utility model aims to overcome the problems that in the prior art, maintenance personnel need to carry or carry tools to overhaul high-position elements in the main body of the electric control cabinet, so that a great amount of work preparation is needed before the maintenance is needed, the preparation work is complicated, time and labor are wasted, and the maintenance efficiency is reduced.
In order to achieve the above object, the present utility model provides an electric control cabinet convenient for maintenance, the electric control cabinet convenient for maintenance includes: the electronic control cabinet comprises a base, an electronic control cabinet body, a storage base and a pedal;
the electric control cabinet comprises a base, an electric control cabinet body, a cabinet door and a pedal, wherein the electric control cabinet body is vertically arranged on the upper surface of the base, the upper surface of the base is positioned on one side of the cabinet door of the electric control cabinet body and is partially recessed inwards to form a containing cavity, a containing seat body which can extend out is arranged in the containing cavity in a lifting manner, the pedal fixedly connected with the top of a second lifting mechanism inside the containing seat body and capable of lifting along the vertical direction is horizontally arranged right above the containing seat body, and the pedal can cover the top of the containing cavity to be open.
Preferably, the electric control cabinet further comprises a first lifting mechanism for driving the storage seat body to lift, and the first lifting mechanism comprises: the lifting motor, the winding wheel and the rope; wherein,,
the upper surface of base that is located the open both sides of automatically controlled cabinet body is fixed being provided with elevator motor respectively horizontally, and is its output shaft that the level set up all fixedly is provided with the rolling wheel, and every the rolling wheel is all fixed and is provided with the rope, and every the free end of rope vertically penetrates in the inner chamber of base and with the fixed deflector fixed connection that sets up on the storage seat body lateral wall is in the same place.
Preferably, the upper surfaces of the bases positioned on two sides of the opening of the electric control cabinet body are respectively and horizontally fixedly provided with a protective shell, and the two groups of lifting motors are respectively and horizontally arranged in the inner cavities of the two protective shells.
Preferably, guide rails are vertically arranged on two side walls of the inner cavity of the base respectively, each guide plate which is horizontally arranged is inwards recessed towards one end of each guide rail corresponding to the guide plate to form a guide groove matched with the guide rail, and each guide plate is slidably assembled on the corresponding guide rail through the guide groove.
Preferably, the second lifting mechanism includes: the lifting screw rod, the lifting sliding block, the guiding sliding block and the supporting rod; wherein,,
the bottom part of the storage seat body is inwards sunken to form a first guide groove, a driving motor is horizontally and fixedly arranged at one end of the first guide groove, an output shaft of the horizontally arranged lifting screw rod consisting of a first screw rod and a second screw rod with opposite screw thread directions is coaxially and fixedly arranged through a coupler, the other end of the lifting screw rod is fixed at the other end of the first guide groove through a bearing, two lifting slide blocks capable of horizontally moving along respective shaft bodies and adapting to the first guide groove are sleeved on the first screw rod and the second screw rod through screw threads respectively, two guide slide blocks capable of moving along the horizontal directions are arranged on the lower surface of the foot pedal at intervals, the bottom ends of two support rods hinged together and in an X shape are correspondingly hinged to the two lifting slide blocks respectively, and the top ends of the two support rods are correspondingly hinged to the two guide slide blocks respectively.
Preferably, the lower surface part of the foot pedal is recessed inwards to form a second guide groove matched with the guide sliding blocks, and the two guide sliding blocks are slidably assembled in the second guide groove.
Preferably, the upper surface of the foot pedal is uniformly provided with a plurality of anti-slip strips.
Preferably, a sealing gasket is arranged on the lower surface of the foot pedal.
According to the technical scheme, the electric control cabinet convenient to maintain has the beneficial effects that: when the electric control cabinet body needs to be overhauled, when the height of a maintenance worker is insufficient, as shown in the figure, the containing seat body and the pedal arranged on the containing seat body can be lifted up together, so that the foot pedal is exposed from the base, the maintenance worker can conveniently stand on the pedal arranged on the containing seat body to overhaul the electric control cabinet body at a higher position, when the foot pedal of the maintenance worker standing on the containing seat is not enough to be in the electric control cabinet body at the higher position, the height of the pedal can be adjusted through the second lifting mechanism, the foot pedal can be lifted to a proper position so that the maintenance worker can overhaul the electric control cabinet body at the higher position, thereby providing convenience for the maintenance worker, being free from carrying external tools and being capable of overhauling the electric control cabinet body at any height, saving time and labor, avoiding the preparation work in the earlier stage, and further improving the maintenance efficiency.
Additional features and advantages of the utility model will be set forth in the detailed description which follows; and none of the utility models are related to the same or are capable of being practiced in the prior art.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
fig. 1 is a schematic view of an electric control cabinet for facilitating maintenance provided in a preferred embodiment of the present utility model;
fig. 2 is a schematic view showing an internal structure of an electric control cabinet for facilitating maintenance provided in a preferred embodiment of the present utility model;
fig. 3 is a schematic view showing a structure of an electric control cabinet according to a preferred embodiment of the present utility model in a state of a moment for easy maintenance;
fig. 4 is a schematic view of the internal structure of fig. 3.
Description of the reference numerals
1. A base; 2. an electric control cabinet body; 3. a housing base; 4. a foot pedal; 5. a first lifting mechanism; 501. a lifting motor; 502. a winding wheel; 503. a rope; 6. a second lifting mechanism; 601. lifting the screw rod; 602. a lifting slide block; 603. a guide slide block; 604. a support rod; 7. an anti-slip strip; 8. a protective housing; 9. a first guide groove; 10. a driving motor; 11. a guide plate; 12. a guide rail; 13. and a second guide groove.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
As shown in fig. 1 to 4, the electric control cabinet convenient to maintain provided by the utility model comprises: the electronic control cabinet comprises a base 1, an electronic control cabinet body 2, a storage base body 3 and a pedal 4;
the electric control cabinet comprises a base 1, an electric control cabinet body 2, a pedal 4, a cabinet door and a pedal 4, wherein the electric control cabinet body 2 is vertically arranged on the upper surface of the base 1, the upper surface of the base 1 is positioned on one side of the cabinet door of the electric control cabinet body 2, a containing seat body 3 which can extend out is arranged in the containing cavity in a liftable mode, the pedal 4 is fixedly connected with the top of a second lifting mechanism 6 inside the containing seat body 3 and can lift along the vertical direction, and the top of the containing cavity is opened by covering the pedal 4.
In the above-mentioned scheme, during the use, when need overhaul the automatically controlled cabinet body 1, when maintenance workman's height is insufficient, as shown in fig. 2, can rise together through the lift receiving seat body 3 with the running-board 3 of setting up above that, make it follow base 1's exposure, make things convenient for maintenance workman to stand at running-board 4 of setting up on receiving seat body 1 and overhaul the inside electrical components that is in higher position of automatically controlled cabinet body 1, when maintenance workman stands the running-board 4 on receiving seat 3 or can not reach the electrical components that is in higher position, can adjust through second elevating system 6 the height of running-board 4 makes running-board 4 rise to suitable position so that maintenance workman can overhaul the electrical components that is in higher position to provide convenience for maintenance workman, need not to carry external instrument and just can overhaul the electrical components of arbitrary height of automatically controlled cabinet body 1 inside, labour saving and time saving, avoid the preliminary preparation work, thereby also improved maintenance efficiency.
In a preferred embodiment of the present utility model, the electric control cabinet further includes a first lifting mechanism 5 for driving the storage seat 3 to lift, and the first lifting mechanism 5 includes: a lifting motor 501, a winding wheel 502 and a rope 503; wherein,,
the upper surface of base 1 that is located the uncovered both sides of automatically controlled cabinet body 2 is fixed respectively the level and is provided with elevator motor 501, and is its output shaft that the level set up all fixedly is provided with rolling wheel 502, and every rolling wheel 502 all is fixed and is provided with rope 503, and every the free end of rope 503 is vertical to penetrate in the inner chamber of base 1 and with the fixed deflector 11 fixed connection that sets up on the lateral wall of receiving seat body 3 together.
In the above scheme, when the storage seat body 3 needs to be lifted, only two groups of lifting motors 501 need to be synchronously started to drive two groups of winding wheels 502 on respective output shafts to rotate so as to wind two ropes 503, and then two guide plates 11 are pulled to drive the storage seat body 3 and the pedal plate 4 to lift up together until the guide plates 11 move to the top of the containing cavity, and the storage seat body 3 is exposed from the opening, when the storage seat body 3 needs to be stored in the containing cavity, two groups of lifting motors 501 are synchronously started to reversely rotate so that two groups of winding wheels 502 reversely rotate to unwind the ropes 503 on the two groups of winding wheels, and in the unwinding process, the storage seat body 3 and the pedal plate 4 descend along the vertical direction until the storage seat body 3 is stored in the containing cavity under the action of self gravity, thereby realizing the function of automatically lifting the storage seat body 3.
In a preferred embodiment of the present utility model, the upper surfaces of the bases 1 located at two sides of the opening of the electric control cabinet body 2 are respectively and horizontally fixed with a protection casing 8, and the two sets of lifting motors 501 are respectively and horizontally arranged in the inner cavities of the two protection casings 8.
In the above-mentioned scheme, play the guard action to elevator motor 501, prevent sun-shine and drenching and corrode elevator motor 501.
In a preferred embodiment of the present utility model, guide rails 12 are vertically disposed on two sidewalls of the inner cavity of the base 1, each horizontally disposed guide plate 11 is partially recessed inward toward one end of the corresponding guide rail 12 to form a guide groove adapted to the guide rail 12, and each guide plate 11 is slidably mounted on the corresponding guide rail 12 through the guide groove.
In the above-mentioned scheme, under the cooperation of the guide rail 12 with the guide recess of deflector 11 looks adaptation is used, can guarantee that deflector 11 can be along the steady and reliable lift of vertical direction.
In a preferred embodiment of the present utility model, the second elevating mechanism 6 includes: a lifting screw 601, a lifting slide block 602, a guide slide block 603 and a support rod 604; wherein,,
the bottom part of the storage seat body 3 is inwards sunken to form a first guide groove 9, a driving motor 10 is horizontally and fixedly arranged at one end of the first guide groove 9, a lifting screw 601 consisting of a first screw rod and a second screw rod with opposite screw thread directions is coaxially and fixedly arranged at an output shaft of the horizontal guide groove through a coupler, the other end of the lifting screw 601 is fixedly arranged at the other end of the first guide groove 9 through a bearing, two lifting slide blocks 602 capable of horizontally moving along respective shaft bodies and adapting to the first guide groove 9 are sleeved on the first screw rod and the second screw rod through screw threads respectively, two guide slide blocks 603 capable of moving along the horizontal direction are arranged on the lower surface of the foot pedal 4 at intervals, the two bottom ends of the support rods 604 which are mutually hinged together and are in an X shape are respectively correspondingly hinged on the two lifting slide blocks 602, and the top ends of the two support rods are respectively correspondingly hinged on the two guide slide blocks 603.
In the above-mentioned scheme, the driving motor 10 is driven to rotate the lifting screw 601, and in the process of rotating the lifting screw 601, two lifting sliders 602 are driven to move in opposite directions or move in opposite directions, and in the process of moving the two lifting sliders, the inclination degree of two support rods 604 hinged to the two lifting sliders is changed (the inclination state is changed from the vertical state to the vertical state or the vertical state is changed from the vertical state to the inclined state, that is, the angle at the intersection of the two support rods 604 is changed), so as to adjust the lifting height of the foot pedal 4.
In a preferred embodiment of the present utility model, the lower surface portion of the footboard 4 is recessed inward to form a second guide groove 13 adapted to the guide slide 603, and two guide slide 603 are slidably fitted in the second guide groove 13.
In the above scheme, under the cooperation of the second guide groove 13 and the guide slide block 603, in the process of changing the angle at the intersection of the two support rods 604, the tops of the two support rods are ensured to be close to or far away from each other along the horizontal direction.
In a preferred embodiment of the present utility model, the upper surface of the foot board 4 is uniformly provided with a plurality of anti-slip strips 7.
In the above-described scheme, when a maintenance worker stands on the footboard 4, it is used to increase the friction between the sole of the maintenance worker and the footboard 4, thereby improving the protection ability.
In a preferred embodiment of the present utility model, a gasket is provided on the lower surface of the foot board 4.
In the above scheme, when the pedal plate 4 can be covered at the opening through the sealing gasket, the sealing performance of the pedal plate and the opening is improved, and rainwater is prevented from entering the accommodating cavity through the opening.
In summary, the electric control cabinet convenient to maintain provided by the utility model overcomes the problems that in the prior art, maintenance personnel need to carry or carry tools to maintain high-position elements in the electric control cabinet main body, so that a great deal of work preparation is required before maintenance is required, the preparation work is complex, time and labor are wasted, and the maintenance efficiency is reduced.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (8)

1. The utility model provides an automatically controlled cabinet convenient to maintenance, its characterized in that, automatically controlled cabinet convenient to maintenance includes: the electronic control cabinet comprises a base (1), an electronic control cabinet body (2), a storage base body (3) and a pedal plate (4);
the electric control cabinet comprises a base (1) and an electric control cabinet body (2), wherein the electric control cabinet body (2) is vertically arranged on the upper surface of the base (1), the upper surface of the base (1) is partially inwards recessed to form a containing cavity, a containing seat body (3) which can extend out is arranged in the containing cavity in a liftable mode, a pedal plate (4) fixedly connected with the top of a second lifting mechanism (6) inside the containing seat body and capable of lifting along the vertical direction is horizontally arranged right above the containing seat body (3), and the pedal plate (4) can cover the top of the containing cavity.
2. The electric control cabinet convenient for maintenance according to claim 1, characterized in that it further comprises a first lifting mechanism (5) for driving the housing base (3) to lift, said first lifting mechanism (5) comprising: a lifting motor (501), a winding wheel (502) and a rope (503); wherein,,
the upper surface of base (1) that is located the uncovered both sides of automatically controlled cabinet body (2) is fixed respectively horizontally and is provided with elevator motor (501), and is its output shaft that the level set up all fixedly is provided with rolling wheel (502), and every rolling wheel (502) all is fixed and is provided with rope (503), and every the free end of rope (503) vertically penetrates in the inner chamber of base (1) and with the fixed deflector (11) fixed connection together that sets up on the lateral wall of receiving seat body (3).
3. The electric control cabinet convenient to maintain according to claim 2, wherein the upper surfaces of the bases (1) positioned on two sides of the opening of the electric control cabinet body (2) are respectively and horizontally fixedly provided with protective shells (8), and two groups of lifting motors (501) are respectively and horizontally arranged in inner cavities of the two protective shells (8).
4. The electric control cabinet convenient to maintain according to claim 2, wherein guide rails (12) are vertically arranged on two side walls of the inner cavity of the base (1), each guide plate (11) horizontally arranged is partially recessed inwards towards one end of the corresponding guide rail (12) to form a guide groove matched with the guide rail (12), and each guide plate (11) is slidably assembled on the corresponding guide rail (12) through the guide groove.
5. The easy-to-repair electric control cabinet according to claim 1, characterized in that the second lifting mechanism (6) comprises: the lifting screw rod (601), the lifting sliding block (602), the guiding sliding block (603) and the supporting rod (604); wherein,,
the bottom part of the storage seat body (3) is inwards sunken to form a first guide groove (9), one end of the first guide groove (9) is horizontally and fixedly provided with a driving motor (10), an output shaft of the pedal (4) is horizontally provided with a lifting screw (601) consisting of a first screw rod and a second screw rod with opposite screw threads through a coupler, the other end of the lifting screw rod (601) is fixedly arranged at the other end of the first guide groove (9) through a bearing, two lifting slide blocks (602) capable of horizontally moving along respective shaft bodies and adapting to the first guide groove (9) are sleeved with threads respectively, two guide slide blocks (603) capable of horizontally moving are arranged on the lower surface of the pedal at intervals, the bottom ends of two support rods (604) which are mutually hinged together and are in an X shape are respectively correspondingly hinged on the two lifting slide blocks (602), and the top ends of the two support rods are respectively correspondingly hinged on the two guide slide blocks (603).
6. The electric control cabinet convenient for maintenance according to claim 5, wherein the lower surface part of the foot pedal (4) is recessed inwards to form a second guide groove (13) matched with the guide slide block (603), and the two guide slide blocks (603) are slidably assembled in the second guide groove (13).
7. The electric control cabinet convenient to maintain according to claim 1, characterized in that a plurality of anti-slip strips (7) are uniformly arranged on the upper surface of the foot pedal (4).
8. The electric control cabinet convenient for maintenance according to claim 1, characterized in that the lower surface of the foot pedal (4) is provided with a sealing gasket.
CN202320026184.3U 2023-01-05 2023-01-05 Electric control cabinet convenient to maintain Active CN219248296U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320026184.3U CN219248296U (en) 2023-01-05 2023-01-05 Electric control cabinet convenient to maintain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320026184.3U CN219248296U (en) 2023-01-05 2023-01-05 Electric control cabinet convenient to maintain

Publications (1)

Publication Number Publication Date
CN219248296U true CN219248296U (en) 2023-06-23

Family

ID=86804890

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320026184.3U Active CN219248296U (en) 2023-01-05 2023-01-05 Electric control cabinet convenient to maintain

Country Status (1)

Country Link
CN (1) CN219248296U (en)

Similar Documents

Publication Publication Date Title
CN115321414A (en) Lifting device and lifting method for electric power equipment installation
CN220766407U (en) Goods taking machine for goods shelves
CN219248296U (en) Electric control cabinet convenient to maintain
CN112027968B (en) Lifting platform for transformer substation maintenance
CN211554267U (en) High-power supply maintenance platform
CN205076770U (en) Aircraft part is ascended a height and is maintained device
CN212450529U (en) Hydraulic rod type lifter
CN211902630U (en) Street lamp device with automatic lifting system
CN111056511B (en) Universal vehicle platform with lifting device
CN221367424U (en) Intelligent construction platform of offshore wind turbine
CN221319220U (en) Maintenance auxiliary device for water purification station
CN221343878U (en) Lifting type overhauling table for overhauling
CN219807746U (en) Maintenance construction table
CN217703394U (en) Motor train unit overhauling device
CN214326952U (en) Electric power construction device
CN221408204U (en) Disconnecting switch overhauling frame
CN211508269U (en) Power distribution cabinet for power distribution network of power system
CN214323283U (en) Working platform for laying overhead line
CN221796807U (en) Emergency starting device for crane trolley motor
CN211393766U (en) Lifting and extending integrated hub internal working platform
CN221364675U (en) Overhauling workbench for maintaining ball mill
CN218990836U (en) Construction bench that stability performance is good
CN220467436U (en) Material lifting device for building construction
CN215855004U (en) Unilateral lift convenient to unload fruits
CN215419325U (en) Fixed reliable electric power overhauls instrument

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant