CN111509921B - Three-phase motor rotor - Google Patents
Three-phase motor rotor Download PDFInfo
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- CN111509921B CN111509921B CN202010312930.6A CN202010312930A CN111509921B CN 111509921 B CN111509921 B CN 111509921B CN 202010312930 A CN202010312930 A CN 202010312930A CN 111509921 B CN111509921 B CN 111509921B
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- 238000001816 cooling Methods 0.000 claims description 60
- 239000007788 liquid Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 abstract description 35
- 239000003208 petroleum Substances 0.000 abstract description 5
- 238000003889 chemical engineering Methods 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 description 23
- 239000000463 material Substances 0.000 description 15
- 239000002826 coolant Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/10—Arrangements of brushes or commutators specially adapted for improving commutation
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention belongs to the technical field of motor rotors, and particularly relates to a three-phase motor rotor which comprises a rotor, a driving shaft, an electric brush and a current collecting ring, wherein the driving shaft is arranged on the rotor; the outer surface of the driving shaft is fixedly connected with uniformly arranged collecting rings; the outer surfaces of the two collecting rings are both connected with electric brushes in a sliding manner; elongated slots are formed in the inner walls of the two electric brushes; the upper surfaces of the two long grooves are fixedly connected with arc plates which are uniformly arranged through springs; each arc-shaped plate is attached to the rubber layer in an initial state; the upper surface of each arc-shaped plate is rotatably connected with a ball; arc-shaped grooves which are uniformly distributed are formed in the inner walls of the two collecting rings; each ball is in one-to-one correspondence with the arc-shaped grooves; the invention is mainly used for solving the problems that most of the collecting rings and the electric brushes on the existing rotor are in sliding connection, sparks are generated between the collecting rings and the electric brushes in the rotating process of the rotor, and the motor rotor cannot be used in explosion-proof required places such as mines, underground, petroleum, chemical engineering and the like.
Description
Technical Field
The invention belongs to the technical field of motor rotors, and particularly relates to a three-phase motor rotor.
Background
The rotor of the motor is a part rotating in the motor in a popular way, and the rotor of the motor is also a rotating part in the motor. The motor consists of two parts of a rotor and a stator, and the rotor of the motor is divided into an inner rotor rotation mode and an outer rotor rotation mode by a conversion device for realizing electric energy and mechanical energy and electric energy. The inner rotor rotates in such a way that a core body in the middle of the motor is a rotating body, and torque (referred to as a motor) is output or energy is input (referred to as a generator). The outer rotor rotation mode is that the motor outer body is used as a rotating body, and different modes are convenient for application in various occasions.
With the development of society, the motor rotor on the market is diversified, and the manufacturing method and the use place that adopt are also diversified, but at present the collecting ring and the brush on the rotor are mostly sliding connection, can produce the spark between collecting ring and the brush in the rotor rotation process, and this kind of motor rotor often can not use in explosion-proof requirement places such as mine, underground, oil, chemical industry to just restrict motor rotor's range of application.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a three-phase motor rotor which is mainly used for solving the problems that most of collecting rings and electric brushes on the conventional rotor are in sliding connection, sparks are generated between the collecting rings and the electric brushes in the rotating process of the rotor, and the motor rotor cannot be used in explosion-proof required places such as mines, underground, petroleum, chemical engineering and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a three-phase motor rotor, which comprises a rotor, a driving shaft, an electric brush and a current collecting ring, wherein the driving shaft is arranged on the rotor; a driving shaft is fixedly connected to the center line of the inner wall of the rotor and is designed to extend out of the rotor; the outer surface of the driving shaft is fixedly connected with two collecting rings which are uniformly arranged; the outer surfaces of the two collecting rings are both connected with electric brushes in a sliding manner; the outer surfaces of the two electric brushes are respectively wrapped with an insulating layer; the inner walls of the two electric brushes are fixedly connected with wires which penetrate through the insulating layer and are connected with a power supply; elongated slots are formed in the inner walls of the two electric brushes, and rubber layers are fixedly connected in the elongated slots; cooling oil is filled in the two long grooves; the upper surfaces of the two long grooves are fixedly connected with arc plates which are uniformly arranged through springs, and the number of the arc plates is three; each arc-shaped plate is attached to the rubber layer in an initial state; the upper surface of each arc-shaped plate is rotatably connected with a ball, and the ball partially extends out of the electric brush design; arc-shaped grooves are uniformly distributed in the inner walls of the two collecting rings, the number of the arc-shaped grooves is three, and the arc-shaped grooves are designed around the outer surfaces of the collecting rings; each ball is in one-to-one correspondence with the arc-shaped grooves; when the rotor is used in mines, underground, petroleum and other places, in the process of driving the rotor to rotate by the motor, the rotor drives the driving shaft to rotate, the driving shaft drives the collecting ring to rotate, in the process of rotating the collecting ring, the balls rotatably connected with the electric brush do circular motion in the arc-shaped groove, when the balls rotate in the arc-shaped groove, the balls slide downwards when receiving different extrusion forces, the arc-shaped plate is extruded in the process of sliding downwards by the balls, when the arc-shaped plate moves downwards, the arc-shaped plate is separated from the rubber layer, the cooling oil in the long groove flows into the upper part of the arc-shaped plate, the spring is fixedly connected below the arc-shaped plate under the elasticity of the spring, the arc-shaped plate can be restored to the initial state, the cooling oil flowing into the arc-shaped plate can stick the cooling oil into the arc-shaped groove through the rotation of the balls, and a layer of oil film can be formed on the balls and the arc-shaped groove in the process, the cooling oil generator has a certain lubricating effect, so that the balls and the arc-shaped groove are prevented from being damaged due to excessive friction of the balls and the arc-shaped groove, meanwhile, the balls can be prevented from generating sparks when rotating at a high speed in the arc-shaped groove, the sparks are made to touch with external combustible substances, and major accidents are caused due to explosion.
Preferably, an annular groove is formed in the inner wall of the collecting ring on one side, back to the ball, of each arc-shaped groove, and cooling oil is filled in each annular groove; the two annular grooves are designed to surround the collecting ring; the bottoms of the two annular grooves are fixedly connected with first air bags which are uniformly arranged, and springs are fixedly connected in the first air bags; each first air bag is fixedly connected with a contact at one side opposite to the arc-shaped groove, and the contacts are all in an annular groove; the outer surface of each contact is designed to be smooth; conical grooves are formed in the inner wall of the collecting ring between every two contacts and are communicated with the arc-shaped grooves uniformly; a second air bag is fixedly connected between every two first air bags and is communicated with the first air bags; when the cooling oil circulation device works, when the ball rotates above the driving shaft, redundant cooling oil in the arc-shaped groove flows into the annular groove through the conical groove to circulate, the lubricated ball that can step forward is sprayed through the coolant oil to the ball at this in-process, thereby prevent that the ball from rotating at a high speed in the arc wall and producing spark and grinding ball, can also reduce the temperature of ball self simultaneously, prevent ball self high temperature, thereby produce deformation, thereby influence the rotation process of ball, when the ball extrudees out the head in the arc wall, ball itself also can receive the extrusion force, thereby make the ball slide down, thereby extrude the coolant oil in the elongated slot to the ball on, thereby further lubricate ball and arc wall.
Preferably, the diameter of each conical groove is gradually increased from the annular groove to the arc-shaped groove; an expansion layer is fixedly connected in each conical groove; the during operation because all linked firmly the expansion layer in every conical groove, when the conical groove outwards sprayed the cooling oil, can spray the scope grow of cooling oil to make the more even distribution of cooling oil on the ball, if the ball produces the spark suddenly when the arc wall internal rotation, spray through the expansion layer by a large scale and can spout the spark that produces and go out, thereby prevent the spark of production and external combustible substance contact, thereby the emergence accident.
Preferably, liquid leakage grooves are formed between every two balls and in the inner wall of the collecting ring; liquid leakage holes are formed in the inner wall of the collecting ring at the bottom of each liquid leakage groove, and the liquid leakage holes are communicated with the long grooves through the rubber layers; liquid flowing grooves are formed in the two sides of each ball and the inner wall of the collecting ring and communicated with the liquid storage groove; the during operation, when the coolant oil in the arc wall is too much, when the ball was at the arc wall internal rotation, the ball had certain cleaning action to the arc wall, thereby with unnecessary coolant oil and the separation of grinding thing in the arc wall around the ball, in the fluid groove flow liquid trap that offers through the ball both sides flows into the liquid trap, the coolant oil that flows into in the liquid trap is flowing into in the elongated slot through the weeping hole, can be with unnecessary coolant oil drainage to the elongated slot in the arc wall at this in-process, thereby reduce the waste to the coolant oil, can also clean up the grinding thing that the ball produced at the rotation in-process simultaneously, thereby prevent that the ball and arc wall are interior to remain the grinding thing and influence the rotation of ball.
Preferably, each liquid leakage hole is fixedly connected with a first filter layer; when the filter device works, the first filter layer is fixedly connected in each liquid leakage hole, and when cooling oil in the liquid containing groove flows into the long groove, grinding materials mixed in the cooling oil can be filtered on the first filter layer, so that impurities in the cooling oil in the long groove are prevented from being stored, and the purity of the whole cooling oil is influenced.
Preferably, the lower surface of each arc-shaped plate is fixedly connected with an elastic layer, and the elastic layer is wrapped by a spring; the bottoms of the two long grooves are fixedly connected with second filter layers; each elastic layer is communicated with the inner cavity of the filter layer through a through hole; a long hole is formed in the inner wall of each arc-shaped plate at the bottom of each arc-shaped plate and is communicated with a cavity in the elastic layer; during operation, remaining milling stock in the arc can be cleared up when the ball rotates, the adhesion is at the milling stock on ball surface, rotation through the ball can be with the milling stock adhesion on the ball on the arc, when the arc downstream, the coolant oil that flows in on the arc can wash the milling stock of adhesion on the arc, in flowing into the elastic layer through the slot hole, the grinding mixture that flows in the elastic layer is in flowing into the second filter layer, back in the second filter layer flows into, the coolant oil can follow the second filter layer and flow out, the milling stock will leave over in the second filter layer, at this in-process, can clear up the milling stock that ball and arc produced to the second filter layer in, thereby can not have impurity in the coolant oil of guaranteeing to use, thereby avoid the ball to receive the hindrance of impurity, influence the normal rotation of ball.
The invention has the following beneficial effects:
1. the invention has the advantages that the contacts and the tapered grooves which are uniformly arranged are arranged, the cooling oil in the annular groove is sprayed on the ball through the tapered grooves by extruding the contacts, the ball can be further lubricated by spraying the cooling oil on the ball in the process, so that the ball is prevented from generating sparks and grinding the ball when rotating at high speed in the arc-shaped groove, the temperature of the ball can be reduced, the temperature of the ball is prevented from being too high, the ball is prevented from generating deformation, the rotating process of the ball is influenced, when the ball extrudes out of the head in the arc-shaped groove, the ball can also be subjected to extrusion force, the ball slides downwards, the cooling oil in the long groove is extruded onto the ball, and the ball and the arc-shaped groove are further lubricated.
2. The invention has the advantages that through arranging the liquid leakage groove and the first filter layer, when the cooling oil in the arc-shaped groove is excessive and the ball rotates in the arc-shaped groove, the ball has a certain cleaning function on the arc-shaped groove, so that the redundant cooling oil and the grinding material in the arc-shaped groove are blocked around the ball, the liquid grooves arranged at two sides of the ball flow into the liquid placement groove, the cooling oil flowing into the liquid placement groove flows into the long groove through the liquid leakage hole, in the process, the redundant cooling oil in the arc-shaped groove can be guided into the long groove, so that the waste of the cooling oil is reduced, meanwhile, the grinding material generated in the rotation process of the ball can be cleaned, so that the grinding material remained in the ball and the arc-shaped groove is prevented from influencing the rotation of the ball, because the first filter layer is fixedly connected in each liquid leakage hole, when the cooling oil in the liquid placement groove flows into the long groove, the grinding material mixed in the cooling oil can be filtered on the first filter layer, therefore, impurities are prevented from being stored in the cooling oil in the long groove, and the purity of the whole cooling oil is influenced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a body diagram of the present invention;
FIG. 2 is a cross-sectional view of the drive shaft of the present invention;
FIG. 3 is a cross-sectional view of the slip ring and brush of the present invention in mating relationship;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a partial enlarged view of FIG. 4 at B;
in the figure: the device comprises a rotor 1, a driving shaft 2, a brush 3, an insulating layer 31, a lead 32, a long groove 33, a rubber layer 34, an elastic layer 35, an arc-shaped plate 36, a long hole 361, a ball 37, a liquid leakage groove 38, a liquid flow groove 381, a liquid leakage hole 39, a first filter layer 391, a second filter layer 392, a collector ring 4, an arc-shaped groove 41, a contact 42, an annular groove 43, a first air bag 44, a second air bag 45, a conical groove 46 and an expansion layer 47.
Detailed Description
A three-phase motor rotor according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.
As shown in fig. 1 to 5, the rotor of a three-phase motor according to the present invention includes a rotor 1, a driving shaft 2, a brush 3, and a collector ring 4; a driving shaft 2 is fixedly connected to the center line position in the inner wall of the rotor 1, and the driving shaft 2 is designed to extend out of the rotor 1; the outer surface of the driving shaft 2 is fixedly connected with two collecting rings 4 which are uniformly arranged, and the number of the collecting rings 4 is two; the outer surfaces of the two collecting rings 4 are both connected with electric brushes 3 in a sliding manner; the outer surfaces of the two electric brushes 3 are respectively wrapped with an insulating layer 31; the inner walls of the two electric brushes 3 are fixedly connected with leads 32, and the leads 32 penetrate through the insulating layer 31 to be connected with a power supply; elongated grooves 33 are formed in the inner walls of the two electric brushes 3, and rubber layers 34 are fixedly connected in the elongated grooves 33; cooling oil is filled in the two long grooves 33; the upper surfaces of the two long grooves 33 are fixedly connected with arc-shaped plates 36 which are uniformly arranged through springs, and the number of the arc-shaped plates 36 is three; each arc-shaped plate 36 is attached to the rubber layer 34 in an initial state; the upper surface of each arc-shaped plate 36 is rotatably connected with a ball 37, and the ball 37 partially extends out of the design of the electric brush 3; arc-shaped grooves 41 which are uniformly distributed are formed in the inner walls of the two collecting rings 4, the number of the arc-shaped grooves 41 is three, and the arc-shaped grooves are designed to surround the outer surfaces of the collecting rings 4; each ball 37 corresponds to the arc-shaped groove 41 one by one; when the rotor 1 is used in mines, underground, petroleum and other places, in the process that the motor drives the rotor 1 to rotate, the rotor 1 drives the driving shaft 2 to rotate, meanwhile, the driving shaft 2 drives the collecting ring 4 to rotate, in the process that the collecting ring 4 rotates, the balls 37 connected with the electric brush 3 in a rotating mode make circular motion in the arc-shaped groove 41, when the balls 37 rotate in the arc-shaped groove 41, when the balls 37 are under different extrusion forces, the balls 37 slide downwards, the arc-shaped plate 36 is extruded in the process that the balls 37 slide downwards, when the arc-shaped plate 36 moves downwards, the arc-shaped plate 36 is separated from the rubber layer 34, cooling oil in the long groove 33 flows into the upper portion of the arc-shaped plate 36, because the spring fixedly connected below the arc-shaped plate 36 can enable the arc-shaped plate 36 to return to the initial state under the elastic force of the spring, the cooling oil flowing into the arc-shaped plate 36 is adhered into the arc-shaped groove 41 through the rotation of the balls 37, in the process, a layer of oil film can be formed on the ball 37 and the arc-shaped groove 41, and the oil film has a certain lubricating effect, so that the ball 37 and the arc-shaped groove 41 are prevented from being damaged due to overlarge friction between the ball 37 and the arc-shaped groove 41, and meanwhile, the ball 37 can be prevented from generating sparks when rotating at high speed in the arc-shaped groove 41, so that the sparks are contacted with external combustible substances, and thus major accidents are caused, because the insulating layer 31 is wrapped on the outer surface of the electric brush 3, the poor contact of the conducting wire 32 in the conducting process can be prevented, so that the sparks are generated when the conducting wire 32 collides with the electric brush 3, and major accidents are caused, because the rubber layer 34 is fixedly connected on the inner wall of the long groove 33, the cooling liquid in the long groove 33 can be prevented from being directly contacted with the electric brush 3, the conducting wire 32 is prevented from being contacted with the cooling oil in the electrifying process, so that the cooling oil generates an electrode, and the ball 37 is prevented from being contacted with the cooling oil containing the electrode when rotating at high speed in the arc-shaped groove 41, avoiding causing safety accidents.
As an embodiment, an annular groove 43 is formed in the inner wall of the collecting ring 4 on the side of each arc-shaped groove 41 opposite to the ball 37, and cooling oil is filled in the annular groove 43; both annular grooves 43 are designed around the collecting ring 4; the bottoms of the two annular grooves 43 are fixedly connected with first air bags 44 which are uniformly arranged, and springs are fixedly connected in the first air bags 44; each first air bag 44 is fixedly connected with a contact 42 at one side opposite to the arc-shaped groove 41, and the contacts 42 extend into the arc-shaped groove 41; the outer surface of each contact 42 is designed to be smooth; conical grooves 46 are formed in the inner wall of the collecting ring 4 between every two contacts 42, and the conical grooves 46 are communicated with the arc-shaped grooves 41 uniformly; a second air bag 45 is fixedly connected between every two first air bags 44, and the second air bags 45 are communicated with the first air bags 44; in operation, when the ball 37 rotates in the arc-shaped groove 41, the ball 37 presses the evenly arranged contacts 42 in the arc-shaped groove 41, the contacts 42 slide in the annular groove 43 under the pressing of the ball 37, the first air bag 44 fixedly connected in the annular groove 43 is pressed in the process that the contacts 42 slide in the annular groove 43, gas in the first air bag 44 enters the second air bag 45, the second air bag 45 starts to expand under the pressing force of the gas, the cooling oil in the annular groove 43 can be extruded out from the conical groove 46 in the process that the second air bag 45 expands, the extruded cooling oil is evenly sprayed on the surface of the ball 37, after the collecting ring 4 rotates over the ball 37, the first air bag 44 returns to the first air bag 44 under the action of the spring, when the collecting ring 4 rotates to the upper part of the driving shaft 2, redundant cooling oil in the arc-shaped groove 41 flows into the annular groove 43 through the conical groove 46 to circulate, can further lubricate ball 37 through the spraying of cooling oil to ball 37 at this in-process, thereby prevent that ball 37 from rotating at a high speed in arc 41 and producing the spark and grinding ball 37, can also reduce the temperature of ball 37 self simultaneously, prevent ball 37 self high temperature, thereby produce deformation, thereby influence ball 37's rotation process, when ball 37 extrudes out the head in arc 41, ball 37 itself also can receive the extrusion force, thereby make ball 37 slide down, thereby extrude the cooling oil in long slot 33 to ball 37, thereby further lubricate ball 37 and arc 41.
In one embodiment, the diameter of each tapered slot 46 increases from the annular slot 43 to the arc slot 41; an expansion layer 47 is fixedly connected in each conical groove 46; the during operation because all linked firmly expansion layer 47 in every conical groove 46, when conical groove 46 outwards sprayed cooling oil, can spray the scope grow of cooling oil to make the more even distribution of cooling oil on ball 37, if ball 37 suddenly produces the spark when the arc 41 internal rotation of arc, spray through expansion layer 47 a large area and can spout the spark that produces and go out, thereby prevent the spark of production and external combustible substance contact, thereby take place the accident.
In one embodiment, a liquid leakage groove 38 is formed in the inner wall of the slip ring 4 between each two of the balls 37; a liquid leakage hole 39 is formed in the inner wall of the collecting ring 4 at the bottom of each liquid leakage groove 38, and the liquid leakage holes 39 are communicated with the long grooves 33 through the rubber layer 34; liquid flowing grooves 381 are formed in the inner wall of the collecting ring 4 on two sides of each ball 37, and the liquid flowing grooves 381 are communicated with the liquid storage grooves; during operation, when the cooling oil in the arc-shaped groove 41 is too much, when the ball 37 rotates in the arc-shaped groove 41, the ball 37 has a certain cleaning effect on the arc-shaped groove 41, so that redundant cooling oil and grinding materials in the arc-shaped groove 41 are separated around the ball 37, the liquid flowing grooves 381 formed in two sides of the ball 37 flow into the liquid placing grooves, the cooling oil flowing into the liquid placing grooves flows into the long grooves 33 through the liquid leakage holes 39, in the process, the redundant cooling oil in the arc-shaped groove 41 can be drained into the long grooves 33, waste of the cooling oil is reduced, meanwhile, the grinding materials generated in the rotating process of the ball 37 can be cleaned, and the ball 37 and the arc-shaped groove 41 are prevented from remaining grinding materials to influence the rotation of the ball 37.
In one embodiment, a first filtering layer 391 is attached to each of the weep holes 39; when the device works, the first filter layer 391 is fixedly connected in each liquid leakage hole 39, and when cooling oil in the liquid storage tank flows into the long groove 33, grinding materials mixed in the cooling oil can be filtered on the first filter layer 391, so that impurities in the cooling oil in the long groove 33 are prevented from being stored, and the purity of the whole cooling oil is influenced.
As an embodiment, an elastic layer 35 is fixedly connected to the lower surface of each arc plate 36, and the elastic layer 35 wraps the spring design; the bottoms of the two long grooves 33 are fixedly connected with second filter layers 392; each of the elastic layers 35 is communicated with the inner cavity of the second filter layer 392 through a through hole; a long hole 361 is formed in the inner wall of each arc-shaped plate 36 at the bottom of each arc-shaped plate 36, and the long holes 361 are communicated with the cavity in the elastic layer 35; during operation, when the ball 37 rotates, the residual grinding materials in the arc-shaped groove 41 can be cleaned, the grinding materials adhered to the surface of the ball 37 can be adhered to the arc-shaped plate 36 through the rotation of the ball 37, when the arc-shaped plate 36 moves downwards, the cooling oil flowing into the arc-shaped plate 36 can wash the grinding materials adhered to the arc-shaped plate 36, the grinding materials flow into the elastic layer 35 through the long hole 361, the grinding mixture flowing into the elastic layer 35 flows into the second filter layer 392, the cooling oil can flow out of the second filter layer 392 after flowing into the second filter layer 392, the grinding materials are left in the second filter layer 392, in the process, the grinding materials generated by the ball 37 and the arc-shaped groove 41 can be cleaned into the second filter layer 392, so that no impurities exist in the used cooling oil, and the ball 37 is prevented from being blocked by the impurities, affecting the normal rotation of the balls 37.
The specific working process is as follows:
when the rotor 1 is used in mines, underground, petroleum and other places, in the process that the motor drives the rotor 1 to rotate, the rotor 1 drives the driving shaft 2 to rotate, meanwhile, the driving shaft 2 drives the collecting ring 4 to rotate, in the process that the collecting ring 4 rotates, the balls 37 connected with the electric brush 3 in a rotating mode make circular motion in the arc-shaped groove 41, when the balls 37 rotate in the arc-shaped groove 41, when the balls 37 are under different extrusion forces, the balls 37 slide downwards, the arc-shaped plate 36 is extruded in the process that the balls 37 slide downwards, when the arc-shaped plate 36 moves downwards, the arc-shaped plate 36 is separated from the rubber layer 34, cooling oil in the long groove 33 flows into the upper portion of the arc-shaped plate 36, because the spring fixedly connected below the arc-shaped plate 36 can enable the arc-shaped plate 36 to return to the initial state under the elastic force of the spring, the cooling oil flowing into the arc-shaped plate 36 is adhered into the arc-shaped groove 41 through the rotation of the balls 37, when the ball 37 rotates in the arc-shaped groove 41, the ball 37 presses the evenly-arranged contacts 42 in the arc-shaped groove 41, the contacts 42 slide in the annular groove 43 under the pressing of the ball 37, the first air bag 44 fixedly connected in the annular groove 43 is pressed in the process that the contacts 42 slide in the annular groove 43, gas in the first air bag 44 enters the second air bag 45, the second air bag 45 starts to expand under the pressing force of the gas, the cooling oil in the annular groove 43 can be pressed out from the conical groove 46 in the process that the second air bag 45 expands, the pressed cooling oil is evenly sprayed on the surface of the ball 37, and the first air bag 44 returns to the initial state under the action of the spring after the collecting ring 4 rotates over the ball 37.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A three-phase electric machine rotor characterized in that: comprises a rotor (1), a driving shaft (2), an electric brush (3) and a current collecting ring (4); a driving shaft (2) is fixedly connected to the center line of the inner wall of the rotor (1), and the driving shaft (2) is designed to extend out of the rotor (1); the outer surface of the driving shaft (2) is fixedly connected with uniformly arranged collecting rings (4), and the number of the collecting rings (4) is two; the outer surfaces of the two collecting rings (4) are connected with electric brushes (3) in a sliding manner; the outer surfaces of the two electric brushes (3) are respectively wrapped with an insulating layer (31); the inner walls of the two electric brushes (3) are fixedly connected with leads (32), and the leads (32) penetrate through the insulating layer (31) and are connected with a power supply; elongated grooves (33) are formed in the inner walls of the two electric brushes (3), and rubber layers (34) are fixedly connected in the elongated grooves (33); cooling oil is filled in the two long grooves (33); the upper surfaces of the two long grooves (33) are fixedly connected with arc-shaped plates (36) which are uniformly arranged through springs, and the number of the arc-shaped plates (36) is three; each arc-shaped plate (36) is attached to the rubber layer (34) in an initial state; the upper surface of each arc-shaped plate (36) is rotatably connected with a ball (37), and the balls (37) partially extend out of the design of the electric brush (3); arc-shaped grooves (41) which are uniformly distributed are formed in the inner walls of the two collecting rings (4), the number of the arc-shaped grooves (41) is three, and the arc-shaped grooves are designed to surround the outer surfaces of the collecting rings (4); each ball (37) corresponds to the arc-shaped groove (41) one by one;
an annular groove (43) is formed in the inner wall of the collecting ring (4) on one side, back to the ball (37), of each arc-shaped groove (41), and cooling oil is filled in each annular groove (43); the two annular grooves (43) are designed to surround the collecting ring (4); the bottoms of the two annular grooves (43) are fixedly connected with first air bags (44) which are uniformly arranged, and springs are fixedly connected in the first air bags (44); one side of each first air bag (44), which is opposite to the arc-shaped groove (41), is fixedly connected with a contact (42), and the contacts (42) extend into the arc-shaped grooves (41); the outer surface of each contact (42) is designed to be smooth; conical grooves (46) are formed in the inner wall of the collecting ring (4) between every two contacts (42), and the conical grooves (46) are communicated with the arc-shaped grooves (41); every two first gasbags (44) are fixedly connected with a second gasbag (45), and the second gasbags (45) are communicated with the first gasbags (44).
2. A three-phase electric machine rotor according to claim 1, characterized in that: the diameter of each conical groove (46) is gradually increased from the annular groove (43) to the arc-shaped groove (41); an expansion layer (47) is fixedly connected in each conical groove (46).
3. A three-phase electric machine rotor according to claim 1, characterized in that: liquid leakage grooves (38) are formed in the inner wall of the collecting ring (4) between every two balls (37); liquid leakage holes (39) are formed in the inner wall of the collecting ring (4) at the bottom of each liquid leakage groove (38), and the liquid leakage holes (39) are communicated with the long grooves (33) through the rubber layer (34); each ball (37) both sides all seted up flow tank (381) in collecting ring (4) inner wall, and flow tank (381) all with put the cistern intercommunication.
4. A three-phase electric machine rotor according to claim 3, characterized in that: and a first filter layer (391) is fixedly connected in each liquid leakage hole (39).
5. A three-phase electric machine rotor according to claim 1, characterized in that: the lower surface of each arc-shaped plate (36) is fixedly connected with an elastic layer (35), and the elastic layer (35) is wrapped by a spring; the bottoms of the two long grooves (33) are fixedly connected with second filter layers (392); each elastic layer (35) is communicated with the inner cavity of the second filter layer (392) through a through hole; each arc plate (36) bottom all seted up slot hole (361) in arc plate (36) inner wall, and slot hole (361) all communicates with the cavity in elastic layer (35).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010312930.6A CN111509921B (en) | 2020-04-20 | 2020-04-20 | Three-phase motor rotor |
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| CN202010312930.6A CN111509921B (en) | 2020-04-20 | 2020-04-20 | Three-phase motor rotor |
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| CN111509921B true CN111509921B (en) | 2021-08-13 |
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| CN112039245B (en) * | 2020-08-26 | 2021-05-07 | 浙江西菱股份有限公司 | Motor rotor |
| CN114954543A (en) * | 2022-06-21 | 2022-08-30 | 西南交通大学 | Independent wheel pair guiding control structure and method introducing permanent magnetic electromagnetic coupler |
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|---|---|---|---|---|
| GB1151636A (en) * | 1966-02-24 | 1969-05-14 | Electrolux Ab | Brush Holder for an Electric Commutator Motor |
| CN2645295Y (en) * | 2003-06-24 | 2004-09-29 | 邬益飞 | Low abrasion electrical brush |
| CN105162284A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Novel motor structure |
| CN109861435A (en) * | 2019-01-25 | 2019-06-07 | 海门市华信五金有限公司 | Carbon brush brush holder |
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2020
- 2020-04-20 CN CN202010312930.6A patent/CN111509921B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151636A (en) * | 1966-02-24 | 1969-05-14 | Electrolux Ab | Brush Holder for an Electric Commutator Motor |
| CN2645295Y (en) * | 2003-06-24 | 2004-09-29 | 邬益飞 | Low abrasion electrical brush |
| CN105162284A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Novel motor structure |
| CN109861435A (en) * | 2019-01-25 | 2019-06-07 | 海门市华信五金有限公司 | Carbon brush brush holder |
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