CN110707859B - Explosion-proof motor that security performance is high - Google Patents

Explosion-proof motor that security performance is high Download PDF

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Publication number
CN110707859B
CN110707859B CN201910937983.4A CN201910937983A CN110707859B CN 110707859 B CN110707859 B CN 110707859B CN 201910937983 A CN201910937983 A CN 201910937983A CN 110707859 B CN110707859 B CN 110707859B
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CN
China
Prior art keywords
motor
cooling
cooling plate
explosion
power supply
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Active
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CN201910937983.4A
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Chinese (zh)
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CN110707859A (en
Inventor
张鹏
张倩倩
姜刚
孙家伟
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Shandong Hengli Motor Co.,Ltd.
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Rongcheng Hengli Motor Co ltd
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Priority to CN201910937983.4A priority Critical patent/CN110707859B/en
Publication of CN110707859A publication Critical patent/CN110707859A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention discloses an explosion-proof motor with high safety performance, and particularly relates to the technical field of motor heat dissipation, which comprises a motor main body, wherein a motor stator is fixedly arranged in the motor main body, a motor rotor is movably arranged in the motor stator, and a cooling mechanism is arranged on one side of the motor rotor; the cooling mechanism comprises a fixed seat, the fixed seat is arranged at one end of the motor main body, the fixed seat is fixedly connected with the motor main body, a first cooling plate is arranged on one side of the fixed seat, a second cooling plate is arranged at the other end of the motor main body, and the first cooling plate and the second cooling plate are both sleeved with the motor rotor. The heat absorption is carried out through the first cooling disc and the second cooling disc, the rotating blades drive the heat conducting liquid in the second cooling disc to flow, the heat radiating fan is matched to drive air and the heat conducting blades on the outer side of the second cooling disc to carry out air cooling heat radiation, the heat radiating effect is strong, and the use safety performance of the motor is improved.

Description

Explosion-proof motor that security performance is high
Technical Field
The invention relates to the technical field of motor heat dissipation, in particular to an explosion-proof motor with high safety performance.
Background
The explosion-proof motor is a motor which can be used in flammable and explosive places, and does not generate electric sparks during operation. The explosion-proof motor is mainly used in coal mine, petroleum and natural gas, petrochemical industry and chemical industry. In addition, the motor is widely applied to the departments of textile, metallurgy, urban gas, traffic, grain and oil processing, paper making, medicine and the like, a common motor is usually arranged at the tail end of the motor and is fixedly connected with a rotor of the motor through a cooling fan to cool the motor, but the cooling can only be carried out on the motor in a one-way mode, the cooling effect is limited, and further the safety performance of the motor is not strong.
Disclosure of Invention
In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides an explosion-proof motor with high safety performance, in which heat transfer between heat and heat-conducting liquid is improved by heat-conducting blades on a first cooling plate and heat-conducting blades on a second cooling plate, a rotating blade drives the heat-conducting liquid in the second cooling plate to flow, and two conduits are used to realize circulation flow of the heat-conducting liquid between the first cooling plate and the second cooling plate, and a heat-dissipating fan is further used to drive air and the heat-conducting blades outside the second cooling plate to perform air-cooling heat dissipation, so as to perform heat dissipation on both ends of the motor simultaneously, so that the heat-dissipating effect is strong, and the safety performance of the motor is improved, thereby solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an explosion-proof motor with high safety performance comprises a motor main body, wherein a motor stator is fixedly arranged in the motor main body, a motor rotor is movably arranged in the motor stator, and a cooling mechanism is arranged on one side of the motor rotor;
the cooling mechanism comprises a fixed seat, the fixed seat is arranged at one end of a motor main body and fixedly connected with the motor main body, a first cooling plate is arranged at one side of the fixed seat, a second cooling plate is arranged at the other end of the motor main body, the first cooling plate and the second cooling plate are both sleeved with a motor rotor and fixedly connected with the motor main body, sealing sleeves are arranged at both sides of the middle part of the second cooling plate, sealing rings are arranged inside the sealing sleeves, a guide pipe is fixedly connected between the bottom ends of the first cooling plate and the second cooling plate, heat conducting blades are arranged at one side of the first cooling plate and both sides of the second cooling plate, a heat radiating fan is arranged at one end of the motor rotor, a protective cover is arranged at one side of the heat radiating fan and fixedly connected with the motor main body through bolts, and a rotating blade is arranged inside the second cooling plate, the rotating blade is fixedly connected with the motor rotor.
In a preferred embodiment, the first cooling plate and the second cooling plate are both arranged in a disc shape, the inner parts of the first cooling plate and the second cooling plate are both arranged in a hollow mode, and the number of the heat conducting blades is twelve.
In a preferred embodiment, the number of the conduits is two, a partition plate is arranged in the bottom of the first cooling plate, one ends of the two conduits are symmetrically arranged on two sides of the partition plate, the other ends of the two conduits are fixedly connected with two sides of the bottom of the second cooling plate and are tangentially arranged with the second cooling plate, and the first cooling plate and the second cooling plate are filled with heat-conducting liquid.
In a preferred embodiment, the number of the rotating blades is six, the rotating blades are both arc-shaped, bearings movably connected with the motor rotor are arranged at two ends of the sealing sleeve, and heat dissipation holes are formed in the surface of the protective cover.
In a preferred embodiment, a motor main body output end cover is arranged on one side of the fixed seat, the motor main body output end cover is fixedly connected with the motor main body through a bolt, and a bearing movably connected with a motor rotor is arranged inside the motor main body output end cover.
In a preferred embodiment, a power supply connecting seat is fixedly arranged on one side of the top end of the motor main body, a power supply terminal is arranged on the top of the power supply connecting seat, the power supply terminal is connected with a power line, and the power supply terminal is fixedly connected with the power line through a nut in a pressing mode.
In a preferred embodiment, the top of the power supply connecting seat is provided with a wiring cover, and the wiring cover is fixedly connected with the power supply connecting seat through a bolt.
In a preferred embodiment, the power supply connecting seat and one side of the wiring cover are both fixedly provided with wiring sleeves, and the two wiring sleeves are both arranged in a semicircular shape and combined to form a cylindrical shape to be sleeved with a power supply wire.
In a preferred embodiment, a rubber sleeve sleeved with the power line is arranged inside the wire sleeve, a pressing ring is arranged on one side of the rubber sleeve, and the pressing ring is fixedly connected with the wire sleeve through a bolt.
The invention has the technical effects and advantages that:
1. the invention is provided with a first cooling disc and a second cooling disc, heat conducting liquid is filled in the first cooling disc and the second cooling disc, a motor rotor rotates to generate heat, heat conducting blades on the first cooling disc and heat conducting blades on the second cooling disc improve the heat transfer between the heat and the heat conducting liquid, the rotation of the motor rotor is utilized to drive rotating blades in the second cooling disc to rotate, the rotating blades are utilized to drive the heat conducting liquid in the second cooling disc to rotate, the flow of heat conducting oil is realized, the two guide pipes are matched with the guide pipes which are tangentially connected on the second cooling disc, the two guide pipes realize the circulating flow of the heat conducting liquid between the first cooling disc and the second cooling disc, and then the heat radiating fan is matched to drive air and the heat conducting blades outside the second cooling disc to carry out air cooling heat radiation, the two ends of the motor are simultaneously radiated, and compared with the existing one-way fan radiation, the two-way simultaneous radiation has strong radiation effect, and the use safety performance of the motor is improved;
2. according to the invention, the power wiring terminal is arranged, the nut on the power wiring terminal is screwed, so that the power wire and the power wiring terminal are conveniently and fixedly connected, the top of the power connecting seat is sealed by the wiring cover to protect the power wiring terminal, the power wire passes through the cylinder formed by combining the two wiring sleeves, and the rubber sleeve is compressed by the pressing ring, so that the power wire is conveniently protected in a sealing way, the wiring safety of the motor is improved, and the use of the motor is convenient.
Drawings
Fig. 1 is an overall schematic view of the present invention.
FIG. 2 is a schematic side sectional view of a first cooling plate of the present invention.
FIG. 3 is a side sectional view of a second cooling plate of the present invention.
FIG. 4 is a side view of a first cooling plate of the present invention.
FIG. 5 is a side view of a second cooling plate of the present invention.
FIG. 6 is a schematic view of portion A of FIG. 1 according to the present invention.
Fig. 7 is an overall schematic view of a clamp ring of the present invention.
The reference signs are: the motor comprises a motor body 1, a motor stator 2, a motor rotor 3, a fixed seat 4, a first cooling plate 5, a second cooling plate 6, a sealing sleeve 7, a sealing ring 8, a guide pipe 9, a heat conduction blade 10, a heat radiation fan 11, a protective cover 12, a rotating blade 13, a partition plate 14, a motor body output end cover 15, a power supply connecting seat 16, a power supply wiring terminal 17, a power supply wire 18, a wiring cover 19, a wiring cover 20, a rubber sleeve 21 and a pressing ring 22.
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.
The invention provides an explosion-proof motor with high safety performance, which comprises a motor main body 1, a motor stator 2 is fixedly arranged in the motor main body 1, a motor rotor 3 is movably arranged in the motor stator 2, and a cooling mechanism is arranged on one side of the motor rotor 3;
the cooling mechanism comprises a fixed seat 4, the fixed seat 4 is arranged at one end of a motor main body 1, the fixed seat 4 is fixedly connected with the motor main body 1, a first cooling plate 5 is arranged at one side of the fixed seat 4, a second cooling plate 6 is arranged at the other end of the motor main body 1, the first cooling plate 5 and the second cooling plate 6 are both sleeved with a motor rotor 3, the second cooling plate 6 is fixedly connected with the motor main body 1, sealing sleeves 7 are arranged at two sides of the middle part of the second cooling plate 6, sealing rings 8 are arranged inside the sealing sleeves 7, a guide pipe 9 is fixedly connected between the bottom ends of the first cooling plate 5 and the second cooling plate 6, heat conducting blades 10 are arranged at one side of the first cooling plate 5 and two sides of the second cooling plate 6, a heat radiating fan 11 is arranged at one end of the motor rotor 3, and a protective cover 12 is arranged at one side of the heat radiating fan 11, the protective cover 12 is fixedly connected with the motor body 1 through bolts, the rotating blades 13 are arranged inside the second cooling disc 6, and the rotating blades 13 are fixedly connected with the motor rotor 3.
Further, the first cooling plate 5 and the second cooling plate 6 are both arranged in a disc shape, the inner portions of the first cooling plate and the second cooling plate are both arranged in a hollow mode, and the number of the heat conducting blades 10 is twelve.
Further, the number of the guide pipes 9 is two, a partition plate 14 is arranged in the middle of the bottom of the first cooling plate 6, one ends of the guide pipes 9 are symmetrically arranged on two sides of the partition plate 14, the other ends of the guide pipes 9 are fixedly connected with two sides of the bottom of the second cooling plate 6 and are arranged in a tangent mode with the second cooling plate 6, and heat conducting liquid is filled in the first cooling plate 5 and the second cooling plate 6.
Further, the number of the rotating blades 13 is set to six, the rotating blades are all set to be arc-shaped, bearings movably connected with the motor rotor 3 are arranged at two ends of the sealing sleeve 7, and heat dissipation holes are formed in the surface of the protection cover 12.
Further, a motor body output end cover 15 is arranged on one side of the fixing seat 4, the motor body output end cover 15 is fixedly connected with the motor body 1 through bolts, and a bearing movably connected with a motor rotor is arranged inside the motor body output end cover 15.
The implementation mode is specifically as follows: when the motor is used, heat conducting liquid is filled in the first cooling disc 5 and the second cooling disc 6, the motor rotor 3 rotates to generate heat, the heat conducting blades 10 on the first cooling disc 5 and the heat conducting blades 10 on the second cooling disc 6 improve the heat transfer between the heat and the heat conducting liquid, the rotation of the motor rotor 3 is utilized to drive the rotation of the rotating blades 13 in the second cooling disc 6, the rotating blades 13 are arranged in an arc shape, the rotation direction is the same as the arc arrangement direction, the rotating blades 13 are utilized to drive the heat conducting liquid in the second cooling disc 6 to flow, the two guide pipes 9 are tangentially arranged with the inner space of the second cooling disc 6 to drive the heat conducting liquid to enter from one guide pipe 9 and further enter into the first cooling disc 5, meanwhile, the other guide pipe 9 is utilized to convey the heat conducting liquid in the first cooling disc 5 to the second cooling disc 6 by utilizing a hydraulic effect, and the circular flow of the heat conducting liquid between the first cooling disc 5 and the second cooling disc 6 is realized by utilizing the two guide pipes 9, the cooling fan 11 is matched to drive air to perform air cooling and heat dissipation with the heat conduction blades 10 on the outer side of the second cooling disc 6, the cooling fan 11 is also fixedly connected with the motor rotor 3, and the cooling fan 11 and the rotating blades 13 rotate in the same direction to perform simultaneous heat dissipation on two ends of the motor, so that the problem that the existing motor adopts a fan cooling method in a single direction is solved, the heat dissipation effect of the two-way simultaneous heat dissipation is strong, and the use safety performance of the motor is improved;
as shown in fig. 1 and 6-7, the explosion-proof motor with high safety performance is characterized in that a power supply connecting seat 16 is fixedly arranged on one side of the top end of the motor body 1, a power supply wiring terminal 17 is arranged on the top of the power supply connecting seat 16, the power supply wiring terminal 17 is connected with a power line 18, and the power supply wiring terminal 17 is fixedly connected with the power line 18 through a nut in a pressing manner.
Further, a wiring cover 19 is arranged on the top of the power supply connecting seat 16, and the wiring cover 19 is fixedly connected with the power supply connecting seat 16 through bolts.
Furthermore, wiring sleeves 20 are fixedly arranged on one sides of the power supply connecting seat 16 and the wiring cover 19, the two wiring sleeves 20 are arranged in a semicircular mode, and are combined to form a cylindrical shape to be sleeved with the power supply line 18.
Further, a rubber sleeve 21 sleeved with the power line 18 is arranged inside the wire sleeve 20, a pressing ring 22 is arranged on one side of the rubber sleeve 21, and the pressing ring 22 is fixedly connected with the wire sleeve 20 through a bolt.
The implementation mode is specifically as follows: when carrying out the motor wiring, through screwing up the nut on the power terminal 17, make things convenient for power cord 18 and power terminal 17's fixed connection, it is convenient to work a telephone switchboard, utilize wiring lid 19 to seal power connecting seat 16 top, power connecting seat 16 top and wiring lid 19 bottom all are provided with flange, utilize flange and bolt, realize wiring lid 19 and power connecting seat 16 fixed connection, protect power terminal 17, improve power terminal 17's wiring stability, realize improving the security performance of motor, power cord 18 passes the drum that two wiring cover 20 make up, compress tightly rubber sleeve 21 through clamping ring 22, two wiring cover 20 are fixed respectively on power connecting seat 16 and wiring lid 19, conveniently seal protection power cord 18, improve the wiring security of motor, make things convenient for the use of motor.
The working principle of the invention is as follows:
referring to the attached drawings 1-5 of the specification, when the motor is used, heat conducting liquid is filled in the first cooling disc 5 and the second cooling disc 6, the motor rotor 3 rotates to generate heat, the heat conducting blades 10 on the first cooling disc 5 and the heat conducting blades 10 on the second cooling disc 6 improve heat transfer between the heat and the heat conducting liquid, the rotation of the motor rotor 3 is utilized to drive the rotation of the rotating blades 13 in the second cooling disc 6, the rotating blades 13 are utilized to drive the heat conducting liquid in the second cooling disc 6 to flow, two guide pipes 9 are utilized to realize circulating flow of the heat conducting liquid between the first cooling disc 5 and the second cooling disc 6, and then the heat radiating fan 11 is matched to drive air and the heat conducting blades 10 on the outer side of the second cooling disc 6 to perform air-cooling heat radiation on the motor, so that heat radiation effects are strong, and the use safety performance of the motor is improved;
referring to the attached drawings 1 and 6-7 of the specification, when the motor is connected, the fixed connection between the power line 18 and the power wiring terminal 17 is facilitated by screwing a nut on the power wiring terminal 17, the top of the power connecting seat 16 is sealed by the wiring cover 19, the wiring cover 19 is fixedly connected with the power connecting seat 16 through a bolt to protect the power wiring terminal 17, the power line 18 penetrates through a cylinder formed by combining two wiring sleeves 20, and the rubber sleeve 21 is compressed by the compression ring 22, so that the power line 18 is conveniently sealed and protected, the wiring safety of the motor is improved, and the use of the motor is facilitated.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (9)

1. The utility model provides an explosion-proof machine that security performance is high, includes motor main part (1), its characterized in that: a motor stator (2) is fixedly arranged inside the motor stator (2), a motor rotor (3) is movably arranged inside the motor stator (2), and a cooling mechanism is arranged on one side of the motor rotor (3);
the cooling mechanism comprises a fixed seat (4), the fixed seat (4) is arranged at one end of a motor main body (1), the fixed seat (4) is fixedly connected with the motor main body (1), a first cooling plate (5) is arranged at one side of the fixed seat (4), a second cooling plate (6) is arranged at the other end of the motor main body (1), the first cooling plate (5) and the second cooling plate (6) are both sleeved with a motor rotor (3), the second cooling plate (6) is fixedly connected with the motor main body (1), sealing sleeves (7) are arranged on two sides of the middle part of the second cooling plate (6), sealing rings (8) are arranged inside the sealing sleeves (7), a guide pipe (9) is fixedly connected between the bottom ends of the first cooling plate (5) and the second cooling plate (6), and heat conduction blades (10) are arranged on one side of the first cooling plate (5) and two sides of the second cooling plate (6), motor rotor (3) one end is provided with radiator fan (11), radiator fan (11) one side is provided with safety cover (12), bolt fixed connection is passed through with motor main body (1) in safety cover (12), inside rotating vane (13) that is provided with of second cooling plate (6), rotating vane (13) and motor rotor (3) fixed connection.
2. The explosion-proof motor with high safety performance according to claim 1, characterized in that: the first cooling plate (5) and the second cooling plate (6) are both arranged in a disc shape, the inner parts of the first cooling plate and the second cooling plate are both arranged in a hollow mode, and the number of the heat conducting blades (10) is twelve.
3. The explosion-proof motor with high safety performance according to claim 1, characterized in that: the number of the guide pipes (9) is two, a partition plate (14) is arranged in the middle of the bottom of the first cooling disc (6), one end of each guide pipe (9) is symmetrically arranged on two sides of the partition plate (14), the other end of each guide pipe (9) is fixedly connected with two sides of the bottom of the second cooling disc (6) and is tangentially arranged with the second cooling disc (6), and heat conducting liquid is filled in the first cooling disc (5) and the second cooling disc (6).
4. The explosion-proof motor with high safety performance according to claim 1, characterized in that: the number of the rotating blades (13) is six, the rotating blades are all arc-shaped, bearings movably connected with the motor rotor (3) are arranged at two ends of the sealing sleeve (7), and heat dissipation holes are formed in the surface of the protective cover (12).
5. The explosion-proof motor with high safety performance according to claim 1, characterized in that: fixing base (4) one side is provided with motor body output end cover (15), motor body output end cover (15) pass through bolt fixed connection with motor body (1), motor body output end cover (15) inside be provided with electric motor rotor swing joint's bearing.
6. The explosion-proof motor with high safety performance according to claim 1, characterized in that: the motor is characterized in that a power supply connecting seat (16) is fixedly arranged on one side of the top end of the motor body (1), a power supply wiring terminal (17) is arranged at the top of the power supply connecting seat (16), a power supply wire (18) is connected to the power supply wiring terminal (17), and the power supply wiring terminal (17) is tightly pressed on the fixedly connected power supply wire (18) through a nut.
7. The explosion-proof motor with high safety performance as claimed in claim 6, wherein: the top of the power supply connecting seat (16) is provided with a wiring cover (19), and the wiring cover (19) is fixedly connected with the power supply connecting seat (16) through bolts.
8. The explosion-proof motor with high safety performance according to claim 7, characterized in that: power connection seat (16) and wiring lid (19) one side all fixed wiring cover (20) of being provided with, two wiring cover (20) are semi-circular setting, and the combination forms cylindricly and cup joints with power cord (18).
9. The explosion-proof motor with high safety performance as claimed in claim 8, wherein: the wire sleeve is characterized in that a rubber sleeve (21) which is sleeved with a power line (18) is arranged inside the wire sleeve (20), a pressing ring (22) is arranged on one side of the rubber sleeve (21), and the pressing ring (22) is fixedly connected with the wire sleeve (20) through a bolt.
CN201910937983.4A 2019-09-30 2019-09-30 Explosion-proof motor that security performance is high Active CN110707859B (en)

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CN110707859B true CN110707859B (en) 2021-12-17

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111293814B (en) * 2020-03-26 2021-01-12 绍兴文理学院 End sealing device for air-cooled motor
CN111600420B (en) * 2020-04-29 2021-04-20 浙江奇志电机股份有限公司 Dust explosion-proof motor
CN111786505B (en) * 2020-07-14 2021-07-13 苏州赛荣建筑装饰工程有限公司 Steady-state motor with rotor eccentricity absorption function

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