CN111953141B - Explosion-proof motor heat radiation structure - Google Patents

Explosion-proof motor heat radiation structure Download PDF

Info

Publication number
CN111953141B
CN111953141B CN202011036386.3A CN202011036386A CN111953141B CN 111953141 B CN111953141 B CN 111953141B CN 202011036386 A CN202011036386 A CN 202011036386A CN 111953141 B CN111953141 B CN 111953141B
Authority
CN
China
Prior art keywords
motor
water
fixedly connected
explosion
motor body
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
CN202011036386.3A
Other languages
Chinese (zh)
Other versions
CN111953141A (en
Inventor
刘万勤
刘正东
张为军
孙勇安
王正方
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.)
Jiangsu Hengkang Electrical Co ltd
Original Assignee
Jiangsu Hengkang Electrical 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 Jiangsu Hengkang Electrical Co ltd filed Critical Jiangsu Hengkang Electrical Co ltd
Priority to CN202011036386.3A priority Critical patent/CN111953141B/en
Publication of CN111953141A publication Critical patent/CN111953141A/en
Application granted granted Critical
Publication of CN111953141B publication Critical patent/CN111953141B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/19Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention discloses an explosion-proof motor heat dissipation structure in the field of explosion-proof motors, which comprises a motor base, a motor body fixedly connected with the surface of the motor base and a motor shaft of the motor body, wherein the upper surface of the motor base is in bolted connection with two symmetrically arranged connecting seats, and the explosion-proof motor heat dissipation structure has the beneficial effects that: according to the anti-explosion motor, the water box, the water tank and the turbine are arranged, in the using process of the motor body, the turbine is driven to operate through the transmission chain and the driven gear by utilizing the rotation of the motor shaft, the heat generated by the motor body is absorbed outside the motor body and is conveyed into the water tank to be cooled, the heat generated by the operation of the motor body can be effectively absorbed, the heat is dissipated and cooled to the motor body, the continuous rise and excessive heating of the temperature generated by the anti-explosion motor are prevented, and the service life of the anti-explosion motor is prolonged; through setting up connecting seat, No. three supports, clamp plate and seal cover, it is convenient to dismantle, easy to overhaul and change.

Description

Explosion-proof motor heat radiation structure
Technical Field
The invention relates to the field of explosion-proof motors, in particular to a heat dissipation structure of an explosion-proof motor.
Background
An explosion-proof motor is a motor with explosion-proof performance, is mainly used in explosive dangerous environments such as coal mines, petroleum and natural gas, petrochemical industry, chemical industry and the like, and generally covers electrical equipment in a shell to prevent explosive mixtures outside the shell from spreading to the periphery of motor electric parts and prevent sparks, electric arcs or dangerous temperatures from causing explosion.
At present, the explosion-proof motor in the prior art has poor heat dissipation performance, and during use, the temperature generated by the explosion-proof motor continuously rises in the protective shell, so that the explosion-proof motor excessively generates heat, and the service life of the explosion-proof motor is seriously shortened.
Disclosure of Invention
The invention aims to provide a heat dissipation structure of an explosion-proof motor, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a heat dissipation structure of an explosion-proof motor comprises a motor base, a motor body and a motor shaft, wherein the motor body is fixedly connected with the surface of the motor base, the motor shaft of the motor body is fixedly connected with the motor base, the upper surface of the motor base is in bolted connection with two symmetrically-arranged connecting seats, one side, far away from the two connecting seats, of each connecting seat is fixedly connected with a connecting plate, the outer side walls of the two connecting plates are fixedly connected with a second bracket, the top ends of the two second brackets are fixedly connected with a turbine, the bottom ends of the two water boxes are fixedly communicated with a first water outlet pipe through a water outlet, one end, far away from the water box, of each first water outlet pipe is fixedly communicated with a water tank, the outer side wall of the water tank is fixedly communicated with a second water outlet pipe, the second water outlet pipe is fixedly communicated with the water inlet end of the turbine, and the water outlet end of the turbine is fixedly communicated with two water inlet pipes, one ends, far away from the turbine, of the two water inlet pipes are respectively and fixedly communicated with the tops of the two water boxes through water inlets, two symmetrically arranged water gaps are formed in one sides, close to the motor body, of the two water boxes, an intermediate partition plate is fixedly connected to the inner side walls of the two water boxes and is located between the two water gaps, sealing jackets are fixedly communicated with one sides, close to the motor body, of the two water boxes, and third supports are fixedly connected to the top ends of the two connecting seats;
the bottom ends of the outer side walls of the two connecting seats are fixedly connected with two first brackets which are symmetrically arranged, and the two connecting seats are fixedly connected with the water box through the two first brackets;
the side walls of the two connecting plates are fixedly connected with a plurality of uniformly distributed thread sleeves, the inside of each thread sleeve is in threaded sleeve connection with a pushing screw, one side, away from the motor body, of each pushing screw is fixedly connected with a hexagonal embedded nut, the bottom end of each pushing screw is rotatably connected with a pressing plate through a rotating shaft, one side, away from the hexagonal embedded nut, of each pressing plate is abutted against a sealing jacket, the thread sleeves on the same connecting plate are uniformly distributed around the water box, one side, close to the motor body, of each sealing jacket is fixedly connected with a sealing gasket, and the two sealing gaskets are abutted against the outer side wall of the motor body;
the output end of the motor shaft is fixedly sleeved with a driving gear, the output end of the turbine is provided with a driven gear, a transmission chain is arranged between the driving gear and the driven gear, and the driving gear and the driven gear are both in transmission connection with the transmission chain.
As a further scheme of the present invention, a plurality of motor cooling fins are fixedly connected to the outer side wall of the motor body.
As a further scheme of the invention, the connecting plate and the water box are both arranged in an arc structure.
As a further scheme of the invention, the three brackets are connected through a pull buckle.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the anti-explosion motor, the water box, the water tank and the turbine are arranged, in the using process of the motor body, the turbine is driven to operate through the transmission chain and the driven gear by utilizing the rotation of the motor shaft, the heat generated by the motor body is absorbed outside the motor body and is conveyed into the water tank to be cooled, the heat generated by the operation of the motor body can be effectively absorbed, the heat is dissipated and cooled to the motor body, the continuous rise and excessive heating of the temperature generated by the anti-explosion motor are prevented, and the service life of the anti-explosion motor is prolonged;
2. according to the invention, by arranging the connecting seats, the third supports, the pressing plate and the sealing sleeve, when the motor body needs to be overhauled or replaced, the pull buckle between the two third supports is disassembled, the hexagonal embedded nut is screwed to drive the pushing screw to rotate, the pressing plate is driven to be separated from the sealing sleeve, and after the connecting bolts between the two connecting seats and the motor base are disassembled, the motor body can be separated from the heat dissipation structure, so that the disassembly is convenient, and the overhaul and the replacement are convenient.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a perspective view of the water box and bracket II of the present invention;
fig. 5 is an enlarged schematic view of a portion a of fig. 1.
In the figure: 1. a motor body; 2. a motor base; 3. a motor heat sink; 4. a motor shaft; 5. a connecting seat; 6. a connecting plate; 7. a water gap; 8. a water box; 9. a middle partition plate; 10. a water outlet; 11. a first water outlet pipe; 12. a water tank; 13. a turbine; 14. a water inlet; 15. a water inlet pipe; 16. a first bracket; 17. a second bracket; 18. a third bracket; 19. pulling the button; 20. a threaded sleeve; 21. a screw is advanced; 22. a hexagonal embedded nut; 23. a rotating shaft; 24. pressing a plate; 25. sealing the jacket; 26. a gasket; 27. a driven gear; 28. a drive chain; 29. a driving gear; 30. and a second water outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, in the embodiment of the present invention, an explosion-proof motor heat dissipation structure includes a motor base 2, a motor body 1 fixedly connected to the surface of the motor base 2, and a motor shaft 4 of the motor body 1, the upper surface of the motor base 2 is bolted with two symmetrically arranged connecting seats 5, one side of each of the two connecting seats 5 away from each other is fixedly connected with a connecting plate 6, the outer side walls of the two connecting plates 6 are fixedly connected with water boxes 8, the top ends of the two water boxes 8 are fixedly connected with a second bracket 17, the top ends of the two second brackets 17 are fixedly connected with a turbine 13, the bottom ends of the two water boxes 8 are fixedly communicated with a first water outlet pipe 11 through a water outlet 10, one ends of the two first water outlet pipes 11 away from the water boxes 8 are fixedly communicated with a water tank 12, the outer side wall of the water tank 12 is fixedly communicated with a second water outlet pipe 30, the second water outlet pipe 30 is fixedly communicated with a water inlet end of the turbine 13, the water outlet end of the turbine 13 is fixedly communicated with two water inlet pipes 15, one ends of the two water inlet pipes 15, far away from the turbine 13, are respectively and fixedly communicated with the tops of the two water boxes 8 through water inlets 14, two symmetrically arranged water gaps 7 are respectively formed in one sides of the two water boxes 8, close to the motor body 1, the inner side walls of the two water boxes 8 are respectively and fixedly connected with an intermediate partition plate 9, the intermediate partition plate 9 is respectively positioned between the two water gaps 7, one sides of the two water boxes 8, close to the motor body 1, are respectively and fixedly communicated with a sealing jacket 25, and the top ends of the two connecting seats 5 are respectively and fixedly connected with a third support 18;
the bottom ends of the outer side walls of the two connecting seats 5 are fixedly connected with two first brackets 16 which are symmetrically arranged, the two connecting seats 5 are fixedly connected with the water box 8 through the two first brackets 16, and the first brackets 16 can assist in supporting the water box 8;
the side walls of the two connecting plates 6 are fixedly connected with a plurality of uniformly distributed thread sleeves 20, the interior of each thread sleeve 20 is in threaded sleeve connection with a pushing screw 21, one side, away from the motor body 1, of each pushing screw 21 is fixedly connected with a hexagonal embedded nut 22, the bottom end of each pushing screw 21 is rotatably connected with a pressing plate 24 through a rotating shaft 23, one side, away from the hexagonal embedded nut 22, of each pressing plate 24 is abutted against a sealing jacket 25, the thread sleeves 20 on the same connecting plate 6 are uniformly distributed around the water box 8, one side, close to the motor body 1, of each sealing jacket 25 is fixedly connected with a sealing gasket 26, the two sealing gaskets 26 are abutted against the outer side wall of the motor body 1, and the arrangement of the two sealing gaskets 26 can improve the sealing performance between the sealing jacket 25 and the outer side wall of the motor body 1;
the output end of motor shaft 4 is fixed with driving gear 29, the output of turbine 13 is provided with driven gear 27, be provided with drive chain 28 between driving gear 29 and the driven gear 27, driving gear 29 and driven gear 27 all are connected with drive chain 28 transmission, and when motor shaft 4 rotated, through driving driven gear 27 and rotate, drive turbine 13 operation.
Wherein, fixedly connected with a plurality of evenly distributed's motor fin 3 on the 1 lateral wall of motor body for motor body 1 dispels the heat.
Wherein, connecting plate 6 and water box 8 all are the setting of arc type structure, make connecting plate 6 and water box 8 adaptation motor body 1 external shape.
The two third brackets 18 are connected through the pull buckle 19, and the two third brackets 18 are tightened to tightly restrain the connecting seat 5 outside the motor body 1.
The working principle of the invention is as follows: according to the invention, by arranging the water boxes 8, the water tank 12 and the turbine 13, in the using process of the motor body 1, the turbine 13 is driven to operate by the rotation of the motor shaft 4 through the transmission chain 28 and the driven gear 27, the turbine 13 pumps the water flow in the water tank 12 through the second water outlet pipe 30, the water outlet end of the turbine 13 respectively conveys the water flow to the two water boxes 8 through the two water inlet pipes 15, so that the water flow between the water tank 12 and the inner parts of the water boxes 8 circularly flows, the water flow in the water boxes 8 is partitioned by the middle partition plate 9 and flows in the sealing jacket 25, the heat generated by the motor body 1 is absorbed at the outer part of the motor body 1 and conveyed to the water tank 12 for cooling, the heat generated by the operation of the motor body 1 can be effectively absorbed, the heat dissipation and cooling are carried out on the motor body 1, the continuous rise and excessive heating of the temperature generated by the explosion-proof motor are prevented, the service life of the explosion-proof motor is prolonged, and the connecting seat 5, Support No. three 18, clamp plate 24 and seal cover, when needing to overhaul or change motor body 1, dismantle two and draw between No. three support 18 and detain 19, drive propulsion screw 21 through twisting hexagonal embedded nut 22 and rotate, drive clamp plate 24 and sealed clamp cover 25 separation back, dismantle two connecting bolts between connecting seat 5 and the motor base 2 after, can separate motor body 1 and heat radiation structure, it is convenient to dismantle, convenient to overhaul and change.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (4)

1. The utility model provides an explosion-proof motor heat radiation structure, includes motor base (2) motor shaft (4) of motor base (2) fixed surface's motor body (1) and motor body (1) of connecting, its characterized in that: the upper surface of the motor base (2) is in bolted connection with two connecting seats (5) which are symmetrically arranged, one side, away from each other, of each of the two connecting seats (5) is fixedly connected with a connecting plate (6), the outer side wall of each of the two connecting plates (6) is fixedly connected with a water box (8), the top ends of the two water boxes (8) are fixedly connected with a second support (17), the top ends of the two second supports (17) are fixedly connected with a turbine (13) together, the bottom ends of the two water boxes (8) are fixedly communicated with a first water outlet pipe (11) through a water outlet (10), one end, away from the water box (8), of each of the two first water outlet pipes (11) is fixedly communicated with a water tank (12) together, the outer side wall of the water tank (12) is fixedly communicated with a second water outlet pipe (30), and the second water outlet pipe (30) is fixedly communicated with the water inlet end of the turbine (13), the water outlet end of the turbine (13) is fixedly communicated with two water inlet pipes (15), one ends, far away from the turbine (13), of the two water inlet pipes (15) are respectively and fixedly communicated with the tops of the two water boxes (8) through water inlets (14), two symmetrically-arranged water gaps (7) are respectively formed in one sides, close to the motor body (1), of the two water boxes (8), the inner side walls of the two water boxes (8) are respectively and fixedly connected with a middle partition plate (9), the middle partition plate (9) is located between the two water gaps (7), one sides, close to the motor body (1), of the two water boxes (8) are respectively and fixedly communicated with a sealing jacket (25), and the top ends of the two connecting seats (5) are respectively and fixedly connected with a third support (18);
the bottom ends of the outer side walls of the two connecting seats (5) are fixedly connected with two first brackets (16) which are symmetrically arranged, and the two connecting seats (5) are fixedly connected with the water box (8) through the two first brackets (16);
the side walls of the two connecting plates (6) are fixedly connected with a plurality of uniformly distributed thread sleeves (20), the inside of each thread sleeve (20) is in threaded sleeve connection with a pushing screw (21), one side, far away from the motor body (1), of each pushing screw (21) is fixedly connected with a hexagonal embedded nut (22), the bottom end of each pushing screw (21) is rotatably connected with a pressing plate (24) through a rotating shaft (23), one side, far away from the hexagonal embedded nut (22), of each pressing plate (24) is abutted against a sealing jacket (25), the thread sleeves (20) on the same connecting plate (6) are uniformly distributed around the water box (8), one side, near the motor body (1), of each sealing jacket (25) is fixedly connected with a sealing gasket (26), and the two sealing gaskets (26) are abutted against the outer side wall of the motor body (1);
the output end of the motor shaft (4) is fixedly sleeved with a driving gear (29), the output end of the turbine (13) is provided with a driven gear (27), a transmission chain (28) is arranged between the driving gear (29) and the driven gear (27), and the driving gear (29) and the driven gear (27) are both in transmission connection with the transmission chain (28).
2. The explosion-proof motor heat dissipation structure of claim 1, wherein: the motor is characterized in that a plurality of motor radiating fins (3) which are uniformly distributed are fixedly connected to the outer side wall of the motor body (1).
3. The explosion-proof motor heat dissipation structure of claim 1, wherein: the connecting plate (6) and the water box (8) are both arranged in an arc structure.
4. The explosion-proof motor heat dissipation structure of claim 1, wherein: the two third brackets (18) are connected through a pull buckle (19).
CN202011036386.3A 2020-09-28 2020-09-28 Explosion-proof motor heat radiation structure Active CN111953141B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011036386.3A CN111953141B (en) 2020-09-28 2020-09-28 Explosion-proof motor heat radiation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011036386.3A CN111953141B (en) 2020-09-28 2020-09-28 Explosion-proof motor heat radiation structure

Publications (2)

Publication Number Publication Date
CN111953141A CN111953141A (en) 2020-11-17
CN111953141B true CN111953141B (en) 2021-11-02

Family

ID=73356328

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011036386.3A Active CN111953141B (en) 2020-09-28 2020-09-28 Explosion-proof motor heat radiation structure

Country Status (1)

Country Link
CN (1) CN111953141B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036462A1 (en) * 2005-08-03 2007-02-08 Satellite Gear Systems Ltd. Generator or starter generator with liquid cooling circuit for use in vehicle, has cooling circuit that is independent from engine of vehicle, is integrated into E-machine, and uses thermal fluid or thermal oil for cooling purposes
CN207475356U (en) * 2017-11-28 2018-06-08 威海众泰电机有限公司 A kind of fire-proof motor with water cooling function
CN109245436A (en) * 2018-09-20 2019-01-18 贵州大工新能源科技有限公司 A kind of New-type electric machine
CN109274220A (en) * 2018-11-21 2019-01-25 高邮佳春科技有限公司 A kind of high efficiency and heat radiation motor
CN209516848U (en) * 2018-12-21 2019-10-18 江苏吉泓达电机科技有限公司 A kind of high temperature early warning energy-saving electric machine
CN209642502U (en) * 2019-05-21 2019-11-15 成都皮克电源有限公司 A kind of permanent magnet generator of built-in circulation cooling mechanism
CN111564930A (en) * 2020-05-21 2020-08-21 无锡科技职业学院 Novel explosion-proof motor heat radiation structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036462A1 (en) * 2005-08-03 2007-02-08 Satellite Gear Systems Ltd. Generator or starter generator with liquid cooling circuit for use in vehicle, has cooling circuit that is independent from engine of vehicle, is integrated into E-machine, and uses thermal fluid or thermal oil for cooling purposes
CN207475356U (en) * 2017-11-28 2018-06-08 威海众泰电机有限公司 A kind of fire-proof motor with water cooling function
CN109245436A (en) * 2018-09-20 2019-01-18 贵州大工新能源科技有限公司 A kind of New-type electric machine
CN109274220A (en) * 2018-11-21 2019-01-25 高邮佳春科技有限公司 A kind of high efficiency and heat radiation motor
CN209516848U (en) * 2018-12-21 2019-10-18 江苏吉泓达电机科技有限公司 A kind of high temperature early warning energy-saving electric machine
CN209642502U (en) * 2019-05-21 2019-11-15 成都皮克电源有限公司 A kind of permanent magnet generator of built-in circulation cooling mechanism
CN111564930A (en) * 2020-05-21 2020-08-21 无锡科技职业学院 Novel explosion-proof motor heat radiation structure

Also Published As

Publication number Publication date
CN111953141A (en) 2020-11-17

Similar Documents

Publication Publication Date Title
CN206850612U (en) A kind of underwater work from radiating motor
CN111953141B (en) Explosion-proof motor heat radiation structure
CN113067433A (en) High-efficient refrigerated cooling device for explosion-proof motor shell
CN110707859B (en) Explosion-proof motor that security performance is high
US20230304499A1 (en) Electric pump for power battery thermal management system
CN208074990U (en) Cylinder type cold slag machine
CN216776632U (en) Cooling cup
CN206379842U (en) A kind of high temperature resistant permanent-magnet brushless DC electric machine
CN109532467A (en) A kind of New-energy electric vehicle radiator
CN215498629U (en) Multifunctional explosion-proof motor capable of being rapidly cooled
CN212242059U (en) Double-wall corrugated pipe machine head cooling system
CN207208319U (en) Electrodynamic balance car
CN220173050U (en) Explosion-proof motor heat dissipation end cover
CN220440501U (en) Explosion-proof motor with high-efficient heat dissipation
CN211425121U (en) Water-cooling cooler
CN216490025U (en) Multifunctional motor
CN210039867U (en) Water-cooled transformer aluminum shell radiator
CN212620315U (en) Novel aluminium system radiator
CN218563746U (en) Ship turbine with heat radiation structure
CN217741468U (en) Light-weight alternating current-direct current motor based on all aluminum alloy of casing
CN212806542U (en) Heat insulation mechanism for sintering trolley
CN218678662U (en) Water-cooling aviation motor structure
CN210560599U (en) Antioxidant groove
CN210608772U (en) Water-cooling bearing chamber structure of heavy-load heat supply three-phase asynchronous motor
CN211549971U (en) Mechanical pump for liquid metal circulation

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
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A heat dissipation structure of explosion-proof motor

Effective date of registration: 20220629

Granted publication date: 20211102

Pledgee: Bank of Jiangsu Co.,Ltd. Yancheng branch

Pledgor: JIANGSU HENGKANG ELECTRICAL Co.,Ltd.

Registration number: Y2022320000321