CN105927139A - Power cable overhaul ladder - Google Patents

Power cable overhaul ladder Download PDF

Info

Publication number
CN105927139A
CN105927139A CN201610381045.7A CN201610381045A CN105927139A CN 105927139 A CN105927139 A CN 105927139A CN 201610381045 A CN201610381045 A CN 201610381045A CN 105927139 A CN105927139 A CN 105927139A
Authority
CN
China
Prior art keywords
ladder
short
power cable
electric power
base
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.)
Granted
Application number
CN201610381045.7A
Other languages
Chinese (zh)
Other versions
CN105927139B (en
Inventor
张丙涛
刘建树
刘彦文
赵大伟
张玉超
关绍兴
王娟
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.)
State Grid Corp of China SGCC
State Grid Jilin Electric Power Corp
Original Assignee
State Grid Corp of China SGCC
State Grid Jilin Electric Power Corp
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 State Grid Corp of China SGCC, State Grid Jilin Electric Power Corp filed Critical State Grid Corp of China SGCC
Priority to CN201610381045.7A priority Critical patent/CN105927139B/en
Publication of CN105927139A publication Critical patent/CN105927139A/en
Application granted granted Critical
Publication of CN105927139B publication Critical patent/CN105927139B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C1/00Ladders in general
    • E06C1/02Ladders in general with rigid longitudinal member or members
    • E06C1/38Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/02Extending means
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • E06C7/46Non-skid equipment
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The invention discloses a power cable overhaul ladder which comprises a base, a ladder frame and supporting columns. One end of the ladder frame is hinged to the base; the two ends of the supporting columns are installed on the base and the ladder frame correspondingly; the ladder frame comprises a plurality of short frames which are sequentially connected in series; ladder frame inserting blocks are arranged at one end of each short frame, ladder frame inserting grooves are formed in the other end of the ladder frame, and the ladder frame inserting blocks of the short frame at one end are hinged to the base; the short frames are provided with sliding grooves and first penetrating pin holes, the extending direction of the sliding grooves is parallel with that of the short frames, the first pin holes communicate with the sliding grooves, and the axes of the first pin holes are perpendicular to the extending direction of the sliding grooves; and a sliding block is hinged to one end of each supporting column, arranged in the corresponding sliding groove and provided with second pin holes of which the diameter is the same as that of the first pin holes. The ladder frame is formed by connecting the multiple short frames in series, the length of the ladder frame can be increased by inserting and connecting the multiple short frames, the sliding grooves and the two kinds of pin holes enable the supporting columns to be fixed to a plurality of positions of the sliding grooves, and the structural stability of the overhaul ladder is adjusted conveniently.

Description

Electric power cable maintenance ladder
Technical field
The present invention relates to electric power tool technical field, be specifically related to a kind of electric power cable maintenance ladder.
Background technology
In electric power overhaul operation, it is often necessary to the aerial cable being pointed to higher position overhauls.Especially when outdoor aerial cable carrying out maintenance and laying operation, owing to lacking the supporter of necessity, the maintenance ladder ascended a height, when construction, need to be leaned against on electric power cable, then carry out construction operation by workmen.Under this mode of operation, on the one hand, easily there is the phenomenon that slips, causes workmen injured in the fixing shakiness of maintenance ladder.On the other hand, under the Action of Gravity Field of maintenance ladder and workmen, cable cable is easily caused to be pulled or break.
In correlation technique, there is a kind of repair car of electric power, it is from vehicle-mounted lifting ladder, it is adaptable to solve this problem.But repair car of electric power is higher to the requirement of work-yard, and use cost is the highest simultaneously, it is impossible to meet the needs of construction comprehensively.It is thus desirable to develop a kind of easy to use, do not limited stability of strutting system by place and alleviated the electric power overhaul ladder of electric power cable burden.
Summary of the invention
For solving above-mentioned technical problem, embodiments provide a kind of electric power cable maintenance ladder, it includes base, ladder and support column, one end of described ladder is hinged on described base, the two ends of described support column are separately mounted on described base and ladder, described ladder includes the multiple short frame contacted successively, one end of described short frame is provided with ladder inserted block, the other end of described short frame is provided with the ladder slot matched with described ladder inserted block, and the ladder inserted block of the short frame of wherein one end of described ladder is hinged on described base;Being provided with chute and the first pin shaft hole run through on described short frame, the bearing of trend of described chute is parallel with the bearing of trend of described short frame, and described first pin shaft hole connects with described chute and the axis of described first pin shaft hole is perpendicular to the bearing of trend of described chute;One end of described support column is hinged with slide block, and described slide block is placed in described chute, and described slide block is provided with second pin shaft hole identical with the diameter of described first pin shaft hole.
Technical solution of the present invention have the beneficial effect that by arranging base, ladder and supporting, in electric power overhaul operation, maintenance ladder can be propped and climb up ladder and carry out operation by staff, owing in the present invention, ladder is that multiple short frame is connected in series, can be with the multiple short frame of on-demand grafting to extend the length of ladder, the setting of chute and two pin shaft holes makes to support to slide and stops the multiple places being fixed in chute, the convenient framework stability adjusting whole maintenance ladder.
Further, described support column includes the multiple short columns contacted successively, one end of described short column is provided with column cap inserted block, the other end of described short column is provided with the short column slot matched with described column cap inserted block, the short column of wherein one end of described support column is hinged with described base, and the column cap inserted block of the short column of the other end of described support column is hinged with described slide block.
Further, the bottom of described base is detachably provided with antiskid plate, and the bottom of described antiskid plate is provided with multiple anti-skid rack.
Further, the bottom of described antiskid plate is provided with the bearing of trend keeping parallelism of the rotating shaft of the articulated section of multiple keeping parallelism and spaced anti-slip tank, the bearing of trend of described anti-slip tank and described ladder, and described anti-skid rack is slidably mounted in described anti-slip tank.
Further, the cross section of described anti-slip tank is inverted trapezoidal, and the upper end of described anti-skid rack is that the inverted trapezoidal that the anti-slip tank with inverted trapezoidal matches is protruding, and the lower end of described anti-skid rack is triangular hill, and one end conducting other end of described anti-slip tank is closed.
Further, also include counterweight box and the multiple balancing weights in being placed on described counterweight box, the bottom of described counterweight box is provided with the counterweight raised line of multiple bottom surface being perpendicular to described counterweight box, and the upper end of described base offers the counterweight hole that multiple and described counterweight raised line matches.
Further, described counterweight raised line is triangular prism raised line, and described counterweight hole is tri-prism hole.
Further, described balancing weight is the square bodily forms, and described balancing weight includes multiple quality and the different sub-balancing weight of volume.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the first structure chart of a kind of electric power cable maintenance ladder;
Fig. 2 is the second structure chart of a kind of electric power cable maintenance ladder;
Fig. 3 is the structure chart of short frame;
Fig. 4 is the structure chart of antiskid plate;
Fig. 5 is the structure chart of anti-skid rack;
Fig. 6 is the structure chart of counterweight box.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Refer to shown in Fig. 1 ~ Fig. 6, the invention provides a kind of electric power cable maintenance ladder, it includes base 1, ladder and support column 2, one end of ladder is hinged on base 1, the two ends of support column 2 are separately mounted on base 1 and ladder, and ladder includes the multiple short frame 3 contacted successively, and one end of short frame 3 is provided with ladder inserted block 4, the other end of short frame 3 is provided with the ladder slot 5 matched with ladder inserted block 4, and the ladder inserted block 4 of the short frame 3 of wherein one end of ladder is hinged on base 1;Being provided with chute 6 and the first pin shaft hole 7 run through on short frame 3, the bearing of trend of chute 6 is parallel with the bearing of trend of short frame 3, and the first pin shaft hole 7 connects with chute 6 and the axis of the first pin shaft hole 7 is perpendicular to the bearing of trend of chute 6;One end of support column 2 is hinged with slide block (not shown), and slide block is placed in chute 6, and slide block is provided with second pin shaft hole identical with the diameter of the first pin shaft hole 7.
Specifically, in the present embodiment, base 1 is supported for placing or fixing on the ground, and in the present embodiment, base 1 can be tabular or a framework, in this no limit;Wherein, short frame 3 can be H-shaped, and short frame 3 includes horizontal short frame and two identical vertical short framves, and ladder inserted block 4 and ladder slot 5 are oppositely arranged on the two ends of vertical short frame.Chute 6 can be U-lag, and the cross sectional shape of slide block is then identical with the cross sectional shape of chute 6, when assembling maintenance ladder, can be then passed through the second pin shaft hole by using bearing pin through the first pin shaft hole 7 of certain position, slide block is fixed on the position mixed up.By arranging base 1, ladder and supporting 2, in electric power overhaul operation, maintenance ladder can be propped and climb up ladder and carry out operation by staff, owing in the present invention, ladder is that multiple short frame 3 is connected in series, can be with the multiple short frame 3 of on-demand grafting to extend the length of ladder, the setting of chute 6 and two pin shaft holes makes to support to slide and stops the multiple places being fixed in chute 6, the convenient framework stability adjusting whole maintenance ladder.
Wherein in a kind of implementation, support column 2 can include the multiple short column 2a contacted successively, one end of short column 2a is provided with column cap inserted block 8, the other end of short column 2a is provided with the short column slot matched with column cap inserted block 8, the short column 2a of wherein one end of support column 2 is hinged with base 1, and the column cap inserted block 8 of the short column 2a of the other end of support column 2 is hinged with slide block.
Specifically, in this implementation, the length of whole support column 2 can be adjusted by adjusting the quantity flexibility of short column 2a, can preferably adjust the stability of whole maintenance ladder.
In another kind of implementation, the bottom of base 1 is detachably provided with antiskid plate 10, and the bottom of antiskid plate 10 is provided with multiple anti-skid rack 11.
In this implementation, antiskid plate 10 is for strengthening the fixing soundness of base 1, strengthen the security in upkeep operation, by antiskid plate 10 and base 1 are removably connected, extend the use environment of maintenance ladder, use scene, antiskid plate 10 can disassemble in the not used time simultaneously, and convenient for collecting and maintenance are replaced.
Further, the bottom of antiskid plate 10 is provided with the bearing of trend keeping parallelism of the rotating shaft of multiple keeping parallelism and spaced anti-slip tank 12, the bearing of trend of anti-slip tank 12 and the articulated section of ladder, and anti-skid rack 11 is slidably mounted in anti-slip tank 12.
Specifically, in different application scenarios, base 1 can be to be directly placed on level ground, or assisted enhancing skidproof effect by anti-skid rack 11, this is accomplished by anti-skid rack 11 and can on-demand arrange, by arranging anti-slip tank 12 and anti-skid rack 11 slip being inserted in anti-slip tank 12 in the present embodiment, it is achieved that the most on-demand of anti-skid rack 11 inserts, and extends the scope of application of base.
Further, the cross section of anti-slip tank 12 is inverted trapezoidal, and the upper end of anti-skid rack 11 is the inverted trapezoidal projection 9 that the anti-slip tank 12 with inverted trapezoidal matches, and the lower end of anti-skid rack 11 is triangular hill, and one end conducting other end of anti-slip tank 12 is closed.
Specifically, the inverted trapezoidal projection 9 matched with inverted trapezoidal anti-slip tank 12 is set in the upper end of anti-skid rack 11, after anti-skid rack 11 is slidably inserted in anti-slip tank by assembling, in the vertical direction, anti-skid rack 11 is due to the restriction of shape, loosening situation will not be produced, be conducive to strengthening the steadiness that anti-skid rack 11 is installed.
Further, this maintenance ladder also includes counterweight box 13 and the multiple balancing weights 14 in being placed on counterweight box 13, the bottom of counterweight box 14 is provided with the counterweight raised line 15 of multiple bottom surface being perpendicular to counterweight box 14, and the upper end of base 1 offers multiple counterweight hole matched with counterweight raised line 15.It is preferred that in the present embodiment, counterweight raised line can be triangular prism raised line, correspondingly, counterweight hole can be then tri-prism hole.Preferably, balancing weight can be square shape, and balancing weight includes multiple quality and the different sub-balancing weight of volume.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (8)

1. an electric power cable maintenance ladder, including base, ladder and support column, one end of described ladder is hinged on described base, the two ends of described support column are separately mounted on described base and ladder, it is characterized in that: described ladder includes the multiple short frame contacted successively, one end of described short frame is provided with ladder inserted block, and the other end of described short frame is provided with the ladder slot matched with described ladder inserted block, and the ladder inserted block of the short frame of wherein one end of described ladder is hinged on described base;Being provided with chute and the first pin shaft hole run through on described short frame, the bearing of trend of described chute is parallel with the bearing of trend of described short frame, and described first pin shaft hole connects with described chute and the axis of described first pin shaft hole is perpendicular to the bearing of trend of described chute;
One end of described support column is hinged with slide block, and described slide block is placed in described chute, and described slide block is provided with second pin shaft hole identical with the diameter of described first pin shaft hole.
A kind of electric power cable maintenance ladder the most according to claim 1, it is characterized in that: described support column includes the multiple short columns contacted successively, one end of described short column is provided with column cap inserted block, the other end of described short column is provided with the short column slot matched with described column cap inserted block, the short column of wherein one end of described support column is hinged with described base, and the column cap inserted block of the short column of the other end of described support column is hinged with described slide block.
A kind of electric power cable maintenance ladder the most according to claim 1, it is characterised in that: the bottom of described base is detachably provided with antiskid plate, and the bottom of described antiskid plate is provided with multiple anti-skid rack.
A kind of electric power cable maintenance ladder the most according to claim 3, it is characterized in that: the bottom of described antiskid plate is provided with multiple keeping parallelism and spaced anti-slip tank, the bearing of trend keeping parallelism of the rotating shaft of the articulated section of the bearing of trend of described anti-slip tank and described ladder, described anti-skid rack is slidably mounted in described anti-slip tank.
A kind of electric power cable maintenance ladder the most according to claim 4, it is characterized in that: the cross section of described anti-slip tank is inverted trapezoidal, the upper end of described anti-skid rack is that the inverted trapezoidal that the anti-slip tank with inverted trapezoidal matches is protruding, the lower end of described anti-skid rack is triangular hill, and one end conducting other end of described anti-slip tank is closed.
A kind of electric power cable maintenance ladder the most according to claim 1, it is characterized in that: also include counterweight box and the multiple balancing weights in being placed on described counterweight box, the bottom of described counterweight box is provided with the counterweight raised line of multiple bottom surface being perpendicular to described counterweight box, and the upper end of described base offers the counterweight hole that multiple and described counterweight raised line matches.
A kind of electric power cable maintenance ladder the most according to claim 6, it is characterised in that: described counterweight raised line is triangular prism raised line, and described counterweight hole is tri-prism hole.
A kind of electric power cable maintenance ladder the most according to claim 6, it is characterised in that: described balancing weight be pros' bodily forms, and described balancing weight includes multiple quality and the different sub-balancing weight of volume.
CN201610381045.7A 2016-06-01 2016-06-01 Electric power cable maintenance ladder Active CN105927139B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610381045.7A CN105927139B (en) 2016-06-01 2016-06-01 Electric power cable maintenance ladder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610381045.7A CN105927139B (en) 2016-06-01 2016-06-01 Electric power cable maintenance ladder

Publications (2)

Publication Number Publication Date
CN105927139A true CN105927139A (en) 2016-09-07
CN105927139B CN105927139B (en) 2018-02-27

Family

ID=56833272

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610381045.7A Active CN105927139B (en) 2016-06-01 2016-06-01 Electric power cable maintenance ladder

Country Status (1)

Country Link
CN (1) CN105927139B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593288A (en) * 2016-12-25 2017-04-26 重庆市永川区义三种苗有限责任公司 Picking ladder convenient to fold and for fruit trees
CN106761357A (en) * 2016-12-30 2017-05-31 重庆亿酆农业综合开发有限公司 Ladder for plucking fruit on hillside
CN109138819A (en) * 2018-10-25 2019-01-04 镇江华驰电器有限公司 A kind of electric power overhaul ladder anti-skid structure
CN109209217A (en) * 2018-10-25 2019-01-15 镇江华驰电器有限公司 A kind of electric power overhaul frame
CN113714879A (en) * 2021-09-18 2021-11-30 海南承宏环境工程有限公司 Building wall surface construction equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226759A1 (en) * 1971-06-08 1973-01-18 Verbundnetz Elektroenergie X 1 PROCEDURES AND EQUIPMENT FOR WORKING ON VOLTAGE CABLES AND ELECTRICAL POWER SUPPLY SYSTEMS
US5857544A (en) * 1997-07-21 1999-01-12 Del Sole; Robert Independent mobile work ladder support stand
CN203476190U (en) * 2013-08-02 2014-03-12 国家电网公司 Electric power cable overhauling ladder
CN204186286U (en) * 2014-11-06 2015-03-04 国家电网公司 A kind of electric power overhaul ladder
CN204851034U (en) * 2015-07-08 2015-12-09 国家电网公司 Power transmission line tower detects with dismantling ladder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226759A1 (en) * 1971-06-08 1973-01-18 Verbundnetz Elektroenergie X 1 PROCEDURES AND EQUIPMENT FOR WORKING ON VOLTAGE CABLES AND ELECTRICAL POWER SUPPLY SYSTEMS
US5857544A (en) * 1997-07-21 1999-01-12 Del Sole; Robert Independent mobile work ladder support stand
CN203476190U (en) * 2013-08-02 2014-03-12 国家电网公司 Electric power cable overhauling ladder
CN204186286U (en) * 2014-11-06 2015-03-04 国家电网公司 A kind of electric power overhaul ladder
CN204851034U (en) * 2015-07-08 2015-12-09 国家电网公司 Power transmission line tower detects with dismantling ladder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593288A (en) * 2016-12-25 2017-04-26 重庆市永川区义三种苗有限责任公司 Picking ladder convenient to fold and for fruit trees
CN106761357A (en) * 2016-12-30 2017-05-31 重庆亿酆农业综合开发有限公司 Ladder for plucking fruit on hillside
CN106761357B (en) * 2016-12-30 2018-04-20 重庆亿酆农业综合开发有限公司 The ladder of fruit is picked on hillside
CN109138819A (en) * 2018-10-25 2019-01-04 镇江华驰电器有限公司 A kind of electric power overhaul ladder anti-skid structure
CN109209217A (en) * 2018-10-25 2019-01-15 镇江华驰电器有限公司 A kind of electric power overhaul frame
CN113714879A (en) * 2021-09-18 2021-11-30 海南承宏环境工程有限公司 Building wall surface construction equipment

Also Published As

Publication number Publication date
CN105927139B (en) 2018-02-27

Similar Documents

Publication Publication Date Title
CN105927139A (en) Power cable overhaul ladder
CN103321581A (en) Land rig
MX2010011599A (en) Movable wellhead platform.
CN202673195U (en) Device for connecting drill pipes with three-joint unit
CN105350763A (en) Guide rail-type construction hanging basket for chimney beacon paint and construction method
CN105565220A (en) Aerial working platform
CN204738226U (en) Arched bridge main arch bottom plate rail formula tool car
CN204940133U (en) Hydraulic pressure sliding sash climbing frame
CN110319996A (en) Novel free fall pilot system
CN202657868U (en) Automatic weight loading and unloading mechanism of crawler crane
CN214246526U (en) Scaffold for building construction
CN201620593U (en) Spring-board frame for building construction
CN212337125U (en) Combined type climbing tool for straight bulkhead of cargo hold
CN110723647B (en) Movable hoisting device capable of being accurately matched for bridge construction
CN109281704B (en) Tunnel construction ventilation gas flexible start monitoring devices
CN204103309U (en) A kind of composite type inspection platform
CN112844263B (en) Method for disassembling and assembling components in large chemical tower
CN206908169U (en) A kind of electric apparatus Commissioning field job platform
CN202117571U (en) Movable type tunnel top drilling machine
CN217175626U (en) Climbing frame
CN111005670A (en) Combined type climbing tool for straight bulkhead of cargo hold
CN104389416A (en) Decoration scaffold with fixed piles
CN205771632U (en) Pallet apparatus and streamline
CN201037404Y (en) Straight line pumping unit tower support with mine mouth dodging mechanism
CN205421884U (en) Safety device that pole aerial work used

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Zhang Bingtao

Inventor after: Rong Zichao

Inventor after: Guan Shaoxing

Inventor after: Wang Juan

Inventor after: Liu Yanwen

Inventor after: Han Shaoyu

Inventor after: Wang Zigang

Inventor after: Li Xinhui

Inventor after: Xu Pengcheng

Inventor after: Liu Jianshu

Inventor after: Zhao Dawei

Inventor after: Zhang Yuchao

Inventor before: Zhang Bingtao

Inventor before: Liu Jianshu

Inventor before: Liu Yanwen

Inventor before: Zhao Dawei

Inventor before: Zhang Yuchao

Inventor before: Guan Shaoxing

Inventor before: Wang Juan

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant