CN114088533B - Verification device and verification method for simulation verification of motor rotor retaining ring strength - Google Patents
Verification device and verification method for simulation verification of motor rotor retaining ring strength Download PDFInfo
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- CN114088533B CN114088533B CN202210074583.7A CN202210074583A CN114088533B CN 114088533 B CN114088533 B CN 114088533B CN 202210074583 A CN202210074583 A CN 202210074583A CN 114088533 B CN114088533 B CN 114088533B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
Abstract
The invention discloses a verification device and a verification method for simulating and verifying the strength of a rotor retaining ring of a motor, which solve the problem of verifying whether the strength of a rotor retaining ring wound by a weftless tape can meet the design requirement; a turntable (8) is fixedly connected to an output shaft (11) of the dragging motor (7), and an arc-shaped ventilation seam (2) is arranged on the excircle of the simulation retaining ring (1); the fan-shaped piece connecting bolt is characterized in that fan-shaped piece connecting bolts (9) are arranged on a turntable (8) at equal intervals in a radian mode, fan-shaped pieces (3) are connected onto the fan-shaped piece connecting bolts (9), the radial sections of the fan-shaped pieces (3) are L-shaped, after the fan-shaped pieces (3) are spliced, an annular piece is formed on the outer circle of the turntable (8), a simulation guard ring (1) is sleeved on the outer circle of the annular piece, a radial long-strip through hole (6) is formed in an annular vertical plate (5) of each fan-shaped piece (3), and the fan-shaped piece connecting bolts (9) are movably arranged in the radial long-strip through holes; the invention has simple structure and convenient processing.
Description
Technical Field
The invention relates to a test device, in particular to a verification device and a verification method for simulating and verifying the strength of a motor rotor retaining ring.
Background
The winding end part of the motor rotor refers to the exposed parts of windings embedded in the motor rotor iron core on the two sides of the rotor iron core, in order to prevent the winding end part from being thrown out and damaged under the action of centrifugal force during the operation of the rotor, the winding end part is wound by an insulating tape and cured, and the processed winding end part of the motor rotor forms a motor rotor guard ring; the existing motor rotor winding retaining ring generally adopts alkali-free untwisted yarn as a main material, 7129 resin for glass fiber reinforced plastic prefabricated rings is brushed on the yarn in the winding process, and the integral retaining ring is formed after the resin is cured; because the materials used in the winding process of the existing rotor retaining ring can not meet the environmental protection requirement, manufacturers prepare to use a non-weft tape to wind the retaining ring to replace the original alkali-free untwisted yarn retaining ring; the retaining ring is an important part on the rotor, and the strength of the retaining ring can directly influence the running reliability of the rotor, so that the strength of the retaining ring wound by the weftless tape needs to be simulated and tested to verify whether the strength of the retaining ring wound by the weftless tape can meet the design requirement.
Disclosure of Invention
The invention provides a verification device and a verification method for simulating and verifying the strength of a rotor retaining ring of a motor, and solves the technical problem of verifying whether the strength of a weftless tape wound rotor retaining ring can meet the design requirement.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: simulating and designing the shape of the motor rotor retaining ring according to the diameter and the thickness of the designed motor rotor retaining ring, and winding a non-dimensional belt on an annular supporting wheel rib to obtain a simulated retaining ring with the size, the shape and the strength basically the same as those of the designed motor rotor retaining ring; manufacturing an annular sheet formed by splicing a plurality of fan-shaped sheets, wherein the number of the fan-shaped sheets is equal to the number of electromagnetic poles of a designed motor rotor winding; the output shaft of the dragging motor is fixedly connected with a motor connecting turntable, the annular sheets are spliced on the excircle of the motor connecting turntable, and when the dragging motor rotates, the annular fan-shaped sheets which are spliced into a ring move outwards along the radial direction for a certain distance under the action of centrifugal force; the method comprises the steps that a simulation retaining ring is connected to the outer circle of an annular sheet formed by splicing a plurality of fan-shaped sheets, when a dragging motor is started, the plurality of fan-shaped sheets rotate along with a motor connecting turntable, the rotating centrifugal force enables the fan-shaped sheets to form radial jacking force to the simulation retaining ring, the radial jacking force of the fan-shaped sheets to the simulation retaining ring is changed by controlling the rotating speed of the dragging motor, whether the strength of the simulation retaining ring can meet the design requirement or not is verified by observing the deformation and cracking phenomena of the simulation retaining ring, and therefore whether the strength design requirement of the motor rotor retaining ring can be met or not is judged.
A verifying device for verifying the strength of a rotor guard ring of a motor in a simulating way comprises a dragging motor and a simulating guard ring, wherein a turntable is fixedly connected to an output shaft of the dragging motor, the simulating guard ring is formed by winding an annular support and a weftless tape wound on the annular support, the radial section of the simulating guard ring is L-shaped, and arc-shaped ventilation seams are arranged on the outer circle of the simulating guard ring at equal intervals in a radian way; on the carousel, be provided with fan-shaped piece connecting bolt equally spaced radian ground, on fan-shaped piece connecting bolt, be connected with the fan-shaped piece, the radial section of fan-shaped piece is L shape, and an annular piece is constituteed on the excircle of carousel after each fan-shaped piece concatenation, on the excircle of this annular piece, has cup jointed the simulation retaining ring, on the annular riser of fan-shaped piece, is provided with radial rectangular through-hole, and fan-shaped piece connecting bolt activity sets up in radial rectangular through-hole.
And a guard ring connecting screw hole is formed in the annular outer circular surface of the fan-shaped sheet, and a guard ring fixing bolt is connected between the guard ring connecting screw hole and the arc-shaped ventilation seam of the simulation guard ring.
A verification method of a verification device for simulating and verifying the strength of a rotor retaining ring of a motor comprises the following steps:
firstly, according to the intensity, diameter, thickness and the shape of design motor rotor retaining ring, the preparation simulation retaining ring, specific process is: firstly, manufacturing a simulation retaining ring wheel framework, winding a non-dimensional belt on the simulation retaining ring wheel framework to form a simulation retaining ring with the size and the shape consistent with those of a designed motor rotor retaining ring, and baking the simulation retaining ring in an oven to obtain a simulation retaining ring for verification;
secondly, according to the simulation retaining ring for verification obtained in the first step and a rotary table fixedly connected to an output shaft of a dragging motor, manufacturing fan-shaped pieces, wherein the number of the fan-shaped pieces is equal to the number of electromagnetic poles of a rotor winding of the motor, the fan-shaped pieces are spliced to form an annular piece, the diameter of the outer circle of the annular piece is equal to the inner diameter of the simulation retaining ring for verification, the diameter of the inner circle of the annular piece is smaller than the diameter of the outer circle of the rotary table, a radial strip-shaped through hole is formed in an annular vertical plate of each fan-shaped piece, and the total weight of each fan-shaped piece is equal to the weight of the end part of the winding of the motor;
thirdly, movably penetrating a fan-shaped piece connecting bolt through the radial strip-shaped through hole, connecting the fan-shaped piece connecting bolt with the rotary table, mounting the fan-shaped pieces on the outer circle of the rotary table, and splicing the mounted fan-shaped pieces into an annular piece;
fourthly, sleeving a simulation retaining ring for verification on the excircle of the annular sheet obtained in the third step, and fixedly connecting the fan-shaped sheet and the simulation retaining ring together by a retaining ring fixing bolt penetrating through an arc-shaped ventilation seam on the simulation retaining ring;
fifthly, starting a dragging motor, enabling a turntable fixedly connected to an output shaft of the dragging motor to synchronously rotate, enabling each fan-shaped piece to move outwards along a radial long-strip through hole under the action of rotating centrifugal force to form jacking pressure on the simulated guard ring, and truly simulating the running state of the designed motor and the stress state of a motor rotor guard ring at the moment because the total weight of each fan-shaped piece is equal to the weight of the end part of a designed motor winding;
and sixthly, controlling the dragging motor to rotate according to the test time and the rotating speed requirement of the designed motor, testing deformation data of the simulated retaining ring after the dragging motor is stopped, and observing the cracking condition of the simulated retaining ring, so that whether the designed motor rotor retaining ring meets the strength design requirement of the motor rotor retaining ring can be judged.
The invention provides reliable first-hand data for the strength design of the large-scale motor rotor retaining ring through the test verification of the simulation retaining ring, and overcomes the material and time waste caused by the traditional way of firstly making a prototype and then testing the prototype; the rotor protection ring verifying device is simple in structure and convenient to process, the verifying device can truly simulate the actual running state of the rotor protection ring, and the verifying result has great significance to design and production links.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention in a left side view;
FIG. 3 is a connection relationship diagram between the ring-shaped pieces spliced by the fan-shaped pieces and the simulation grommet 1 according to the present invention;
FIG. 4 is a schematic view of the structure of FIG. 3 taken along the central arc of the arcuate vent slot 2;
fig. 5 is a schematic structural view of a simulated grommet 1 of the present invention;
fig. 6 is a schematic structural diagram of the ring segment formed by splicing the fan segments according to the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a verifying device for verifying the strength of a rotor guard ring of a motor in a simulating mode comprises a dragging motor 7 and a simulating guard ring 1, wherein a rotary table 8 is fixedly connected to an output shaft 11 of the dragging motor 7, the simulating guard ring 1 is formed by winding an annular support and a weftless tape wound on the annular support, the radial section of the simulating guard ring 1 is L-shaped, and arc-shaped ventilation seams 2 are arranged on the outer circle of the simulating guard ring 1 at equal intervals in a radian mode; on carousel 8, equidistant radian ground is provided with segment connecting bolt 9, on segment connecting bolt 9, is connected with segment 3, and the radial section of segment 3 is L shape, and after 3 concatenations of each segment, constitute an annular piece on the excircle of carousel 8, on the excircle of this annular piece, cup jointed simulation retaining ring 1, on the annular riser 5 of segment 3, be provided with radial rectangular through-hole 6, and the activity of segment connecting bolt 9 sets up in radial rectangular through-hole 6.
And a guard ring connecting screw hole 4 is formed in the annular outer circular surface of the fan-shaped sheet 3, and a guard ring fixing bolt 10 is connected between the guard ring connecting screw hole 4 and the arc-shaped ventilation seam 2 of the simulation guard ring 1.
A verification method of a verification device for simulating and verifying the strength of a rotor retaining ring of a motor comprises the following steps:
firstly, according to the intensity, diameter, thickness and the shape of design motor rotor retaining ring, the preparation simulation retaining ring, specific process is: firstly, manufacturing a simulation retaining ring wheel framework, winding a non-dimensional belt on the simulation retaining ring wheel framework to form a simulation retaining ring with the size and the shape consistent with those of a designed motor rotor retaining ring, and baking the simulation retaining ring in an oven to obtain a simulation retaining ring for verification;
secondly, according to the simulation retaining ring for verification obtained in the first step and a rotary table 8 fixedly connected to an output shaft 11 of a dragging motor 7, manufacturing fan-shaped pieces 3, wherein the number of the fan-shaped pieces 3 is equal to the number of electromagnetic poles of a designed motor rotor winding, the fan-shaped pieces 3 are spliced to form an annular piece, the diameter of the outer circle of the annular piece is equal to the inner diameter of the simulation retaining ring for verification, the diameter of the inner circle of the annular piece is smaller than that of the outer circle of the rotary table 8, a radial strip-shaped through hole 6 is formed in an annular vertical plate 5 of each fan-shaped piece 3, and the total weight of each fan-shaped piece 3 is equal to the weight of the end part of the designed motor winding;
thirdly, movably penetrating the fan-shaped piece connecting bolt 9 through the radial strip-shaped through hole 6, connecting the fan-shaped piece connecting bolt with the rotary table 8, installing the fan-shaped pieces 3 on the outer circle of the rotary table 8, and splicing the installed fan-shaped pieces 3 into an annular piece on the outer circle of the rotary table 8;
fourthly, sleeving a simulation retaining ring for verification on the excircle of the annular sheet obtained in the third step, and fixedly connecting the fan-shaped sheet 3 and the simulation retaining ring 1 together by a retaining ring fixing bolt 10 penetrating through an arc-shaped ventilation seam 2 on the simulation retaining ring 1;
fifthly, starting the dragging motor 7, synchronously rotating a turntable 8 fixedly connected to an output shaft 11 of the dragging motor 7, wherein at the moment, each fan-shaped piece 3 moves outwards along a radial long through hole 6 under the action of a rotating centrifugal force to form jacking pressure on the simulated retaining ring 1, and because the total weight of each fan-shaped piece 3 is equal to the weight of the end part of a designed motor winding, at the moment, the running state of the designed motor and the stress state of a motor rotor retaining ring are truly simulated;
and sixthly, controlling the dragging motor 7 to rotate according to the test time and the rotating speed requirement of the designed motor, testing deformation data of the simulated retaining ring after the motor is stopped, and observing the cracking condition of the simulated retaining ring, so that whether the designed motor rotor retaining ring meets the strength design requirement of the motor rotor retaining ring can be judged.
Claims (2)
1. A verifying device for verifying the strength of a rotor guard ring of a motor in a simulating way comprises a dragging motor (7) and a simulating guard ring (1), wherein a rotating disc (8) is fixedly connected to an output shaft (11) of the dragging motor (7), the verifying device is characterized in that the simulating guard ring (1) is formed by winding an annular support and a weftless tape wound on the annular support, the radial section of the simulating guard ring (1) is L-shaped, and arc-shaped ventilation seams (2) are arranged on the outer circle of the simulating guard ring (1) at equal intervals in radian; the fan-shaped piece connecting bolts (9) are arranged on the rotary table (8) at equal intervals in a radian manner, the fan-shaped pieces (3) are connected onto the fan-shaped piece connecting bolts (9), the radial sections of the fan-shaped pieces (3) are L-shaped, guard ring connecting screw holes (4) are formed in the annular outer circular surfaces of the fan-shaped pieces (3), and guard ring fixing bolts (10) are connected between the guard ring connecting screw holes (4) and the arc-shaped ventilation seams (2) of the simulated guard ring (1); after each segmental plate (3) is spliced, an annular plate is formed on the outer circle of the rotary table (8), the simulation retaining ring (1) is sleeved on the outer circle of the annular plate, a radial strip-shaped through hole (6) is formed in the annular vertical plate (5) of the segmental plate (3), and a segmental plate connecting bolt (9) is movably arranged in the radial strip-shaped through hole (6).
2. The method for verifying the simulation of the verifying device for verifying the strength of the rotor retaining ring of the motor as claimed in claim 1, comprising the steps of:
firstly, according to the intensity, diameter, thickness and the shape of design motor rotor retaining ring, the preparation simulation retaining ring, specific process is: firstly, manufacturing a simulation retaining ring wheel framework, winding a non-dimensional belt on the simulation retaining ring wheel framework to form a simulation retaining ring with the size and the shape consistent with those of a designed motor rotor retaining ring, and baking the simulation retaining ring in an oven to obtain a simulation retaining ring for verification;
secondly, according to the simulation retaining ring for verification obtained in the first step and a rotary table (8) fixedly connected with an output shaft (11) of a dragging motor (7), manufacturing fan-shaped pieces (3), wherein the number of the fan-shaped pieces (3) is equal to the number of electromagnetic poles of a motor rotor winding, the fan-shaped pieces (3) are spliced to form an annular piece, the diameter of the outer circle of the annular piece is equal to the inner diameter of the simulation retaining ring for verification, the diameter of the inner circle of the annular piece is smaller than the diameter of the outer circle of the rotary table (8), a radial strip-shaped through hole (6) is formed in an annular vertical plate (5) of each fan-shaped piece (3), and the total weight of each fan-shaped piece (3) is equal to the weight of the end part of the motor winding;
thirdly, movably penetrating a fan-shaped piece connecting bolt (9) through a radial strip-shaped through hole (6), connecting the fan-shaped piece connecting bolt with a turntable (8), installing fan-shaped pieces (3) on the outer circle of the turntable (8), and splicing the installed fan-shaped pieces (3) into an annular piece on the outer circle of the turntable (8);
fourthly, sleeving a simulation retaining ring for verification on the excircle of the annular sheet obtained in the third step, and fixedly connecting the fan-shaped sheet (3) and the simulation retaining ring (1) together by a retaining ring fixing bolt (10) penetrating through an arc-shaped ventilation seam (2) on the simulation retaining ring (1);
fifthly, starting a dragging motor (7), synchronously rotating a turntable (8) fixedly connected to an output shaft (11) of the dragging motor (7), and enabling each fan-shaped sheet (3) to move outwards along a radial strip-shaped through hole (6) under the action of rotating centrifugal force to form jacking pressure on the simulated guard ring (1), wherein the total weight of each fan-shaped sheet (3) is equal to the weight of the end part of a designed motor winding, so that the running state of the designed motor and the stress state of a motor rotor guard ring are truly simulated;
and sixthly, controlling the dragging motor (7) to rotate according to the test time and the rotating speed requirement of the designed motor, testing deformation data of the simulated retaining ring after the motor is stopped, and observing the cracking condition of the simulated retaining ring, so that whether the designed motor rotor retaining ring meets the strength design requirement of the motor rotor retaining ring can be judged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074583.7A CN114088533B (en) | 2022-01-21 | 2022-01-21 | Verification device and verification method for simulation verification of motor rotor retaining ring strength |
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| CN202210074583.7A CN114088533B (en) | 2022-01-21 | 2022-01-21 | Verification device and verification method for simulation verification of motor rotor retaining ring strength |
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| CN114088533A CN114088533A (en) | 2022-02-25 |
| CN114088533B true CN114088533B (en) | 2022-05-10 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116577204B (en) * | 2023-07-14 | 2023-10-31 | 天蔚蓝电驱动科技(江苏)有限公司 | Testing device for strength of carbon fiber sheath |
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