CN117705348B - Motor rotor balance detection device and detection method thereof - Google Patents
Motor rotor balance detection device and detection method thereof Download PDFInfo
- Publication number
- CN117705348B CN117705348B CN202410164715.4A CN202410164715A CN117705348B CN 117705348 B CN117705348 B CN 117705348B CN 202410164715 A CN202410164715 A CN 202410164715A CN 117705348 B CN117705348 B CN 117705348B
- Authority
- CN
- China
- Prior art keywords
- rotor
- sleeve
- magnetic
- side wall
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 120
- 238000009434 installation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000005299 abrasion Methods 0.000 abstract description 13
- 230000008093 supporting effect Effects 0.000 abstract description 13
- 238000003754 machining Methods 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention belongs to the technical field of motor rotor machining, in particular to a motor rotor balance detection device and a detection method thereof, wherein the motor rotor balance detection device comprises a base, a support is arranged on the base, a trapezoid groove is formed in the support, and a sensor is arranged on the support; a baffle frame is arranged on the support; a magnetic shaft sleeve is arranged on a rotor shaft of the rotor, a magnet is arranged on the inner wall of the trapezoid groove, and the baffle frame has magnetism; the support is provided with a mounting frame, the mounting frame is provided with a baffle, the baffle contacts the end face of the rotor shaft, the support is provided with a fixing frame, the fixing frame is provided with a motor, and the motor is provided with a magnetic wheel; the invention has simple structure, can avoid contact between the rotor and the supporting structure, reduces abrasion and damage to the supporting structure and limits excessive jump of the rotor, and simultaneously, detects the rotors with different types and improves the applicability of the detection device.
Description
Technical Field
The invention belongs to the technical field of motor rotor machining, and particularly relates to a motor rotor balance detection device and a detection method thereof.
Background
If the motor rotor has unbalance, the motor rotor generates unbalance vibration during rotation, so that the rotor vibrates, and the quality and the service life of the rotor are reduced, and therefore, the stability and the dynamic balance during rotation of the motor rotor are important.
The existing rotor dynamic balance detection equipment can only be used for detecting a rotor with a single size, and is low in applicability, in addition, a rotor supporting structure mostly adopts a fixed block structure, abrasion is fast, damage to the rotor is also large, and when the rotor is tested on a balancing machine, a motor rotor easily jumps, so that the safety of the balancing machine is influenced.
Disclosure of Invention
In order to make up the defects of the prior art, avoid the contact between the rotor and the supporting structure, reduce the abrasion to the supporting structure and the damage to the rotor and limit the excessive jump of the rotor, and simultaneously detect the rotors of different types, thereby improving the applicability of the detection device.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a motor rotor balance detection device, which comprises a base, wherein a support is symmetrically arranged on the base, a guide groove is formed in the base, the support is fixedly arranged in the guide groove through a bolt, a trapezoid groove is formed in the support, a sensor is arranged on the side wall of the support, a rotor is placed on the trapezoid groove, and the sensor is aligned with the rotor;
the support is provided with a mounting groove, a baffle frame is arranged in the mounting groove, the tail end of the baffle frame is provided with a conical fixing bolt, the fixing bolt enables the tail end of the baffle frame to form interference fit in the mounting groove, and the baffle frame is positioned above the trapezoid groove;
The rotor shaft of the rotor is sleeved with a magnetic shaft sleeve, the inner wall of the trapezoid groove is provided with a magnet, the magnet comprises a bottom magnet positioned at the bottom surface of the trapezoid groove and a side magnet positioned at the side surface of the trapezoid groove, the resultant force direction of the bottom magnet and the side magnet to the magnetic shaft sleeve is vertically upward, the blocking frame is magnetic, the acting force direction of the blocking frame to the magnetic shaft sleeve is vertically downward, and the magnetic shaft sleeve is suspended between the trapezoid groove and the blocking frame under the action of magnetic force;
Install the mounting bracket on the support, install the baffle on the mounting bracket, the terminal surface of baffle contact rotor shaft, install the mount on the support, install the motor on the mount, install the magnetic force wheel on the motor, pass through magnetic force transmission power between magnetic force wheel and the magnetic shaft cover.
Preferably, the trapezoid groove is provided with a plurality of groups of magnets which are arranged side by side, the inner wall of the magnetic shaft sleeve is provided with a connecting groove, the connecting groove is internally provided with a clamping block, and the magnetic shaft sleeves are mutually spliced through the connecting groove and the clamping block.
Preferably, the magnetic shaft sleeve comprises a fixed sleeve and an extension sleeve with the same structure, and the fixed sleeve and the extension sleeve are connected through a connecting groove and a clamping block;
The fixed sleeve is internally provided with a fixed bag, the fixed bag is used for fixing the rotor shaft inserted into the fixed sleeve, the part of the fixed bag, which is contacted with the fixed sleeve, is an outer side wall, and the part of the fixed bag, which is contacted with the rotor shaft, is an inner side wall.
Preferably, elastic sheets are uniformly arranged in the fixed bag around the central line, and two ends of each elastic sheet are respectively connected with the inner side wall and the outer side wall.
Preferably, a pull rope is arranged in the fixed bag, two ends of the pull rope are respectively connected to the inner side wall and the outer side wall, the pull rope is distributed along the tangential direction of the inner side wall, and the linear speed direction of the fixed sleeve during rotation is opposite to the direction of the pull rope towards the outer side wall.
Preferably, an adjusting ring is rotatably arranged on the outer wall of the fixed sleeve, and the adjusting ring is fixed on the fixed sleeve through a fixing screw;
One end of the pull rope far away from the inner side wall penetrates through the outer side wall and the fixing sleeve to be connected to the adjusting ring.
Preferably, the diameter of the end of the fixed sleeve close to the rotor is larger than the diameter of the end of the fixed sleeve far away from the rotor.
A motor rotor balance detection method, the detection method being suitable for use in a motor rotor balance detection apparatus according to any one of the above, the detection method comprising the steps of:
a1: according to the length of the rotor to be detected and the weight of the rotor, the distance between the manufacture on the base is adjusted;
a2: mounting a magnetic sleeve to the rotor shaft; before installation, the free length of the pull rope is adjusted through rotation of the adjusting ring, and the diameter of the inner side wall on the fixed bag is changed so as to adapt to the diameter of the rotor shaft;
a3: placing the rotor with the magnetic shaft sleeve mounted between the trapezoid groove on the support and the baffle frame, and keeping the baffle plate in contact with the end face of the rotor shaft;
A4: starting a motor on the detection device through a controller, and driving the rotor to rotate through magnetic force transmission between the magnetic wheel and the magnetic shaft sleeve, so that the sensor detects vibration data of the rotor during rotation, and a dynamic balance detection result of the rotor is obtained;
A5: and after the detection is finished, the rotor is taken down, and then the steps A2-A4 are repeated, so that a new rotor to be detected is detected.
The beneficial effects of the invention are as follows:
1. according to the motor rotor balance detection device and the motor rotor balance detection method, the rotor can be in a 'suspension' state in the detection device through the trapezoid groove, the bottom surface magnet, the side surface magnet, the baffle frame, the magnetic shaft sleeve, the baffle plate, the motor and the magnetic wheel, the abrasion between the support and the rotor caused by mutual contact between the rotor and the support is avoided, the service life of the detection device and the subsequent normal use of the rotor are ensured, meanwhile, the rotor is in 'suspension', direct contact is avoided during power transmission, the external interference on the rotor during detection is reduced, and the accuracy of detection results is improved.
2. According to the motor rotor balance detection device and the motor rotor balance detection method, the fixing sleeve, the extension sleeve, the fixing bag, the elastic piece, the pull rope and the adjusting ring are arranged, so that the detection device can fix and detect rotors with different types, different rotor shaft diameters and different weights, the applicability of the detection device is improved, and when the rotors with different types are detected, the detection device is relatively simple to adjust, and the operation of staff is facilitated.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of a detection device of the present invention;
FIG. 2 is a schematic view of the structure of the support in the detecting device of the present invention;
FIG. 3 is a schematic view of the installation of a magnetic sleeve and rotor shaft in the detection apparatus of the present invention;
FIG. 4 is a schematic view of the structure of a magnetic sleeve in the detection device of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is an enlarged view of a portion of FIG. 4 at B;
FIG. 7 is a diagram of method steps of the detection method of the present invention;
In the figure: base 1, support 2, mounting groove 21, fender frame 22, dovetail groove 23, bottom surface magnet 231, side magnet 232, rotor shaft 3, magnetic sleeve 4, fixed sleeve 41, extension sleeve 42, spread groove 43, fixture block 431, fixed bag 44, outer sidewall 441, inside wall 442, adjusting ring 45, set screw 451, elastic piece 46, draw cord 47, mounting bracket 5, baffle 51, sensor 6, motor 7, magnetic wheel 71, mount 72.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 7, the motor rotor balance detection device of the invention comprises a base 1, wherein a support 2 is symmetrically arranged on the base 1, a guide groove is formed in the base 1, the support 2 is fixedly arranged in the guide groove through a bolt, a trapezoid groove 23 is formed in the support 2, a sensor 6 is arranged on the side wall of the support 2, a rotor is placed on the trapezoid groove 23, and the sensor 6 is aligned with the rotor;
the support 2 is provided with a mounting groove 21, a baffle frame 22 is arranged in the mounting groove 21, the tail end of the baffle frame 22 is provided with a conical fixing bolt, the fixing bolt enables the tail end of the baffle frame 22 to form interference fit in the mounting groove 21, and the baffle frame 22 is positioned above the trapezoid groove 23;
The rotor shaft 3 of the rotor is sleeved with a magnetic shaft sleeve 4, the inner wall of the trapezoid groove 23 is provided with a magnet, the magnet comprises a bottom surface magnet 231 positioned at the bottom surface of the trapezoid groove 23 and a side surface magnet 232 positioned at the side surface of the trapezoid groove 23, the resultant force direction of the bottom surface magnet 231 and the side surface magnet 232 to the magnetic shaft sleeve 4 is vertically upward, the baffle frame 22 has magnetism, the acting force direction of the baffle frame 22 to the magnetic shaft sleeve 4 is vertically downward, and the magnetic shaft sleeve 4 is suspended between the trapezoid groove 23 and the baffle frame 22 under the action of magnetic force;
The motor rotor is characterized in that a mounting frame 5 is mounted on the support 2, a baffle plate 51 is mounted on the mounting frame 5, the baffle plate 51 contacts with the end face of the rotor shaft 3, a fixing frame 72 is mounted on the support 2, a motor 7 is mounted on the fixing frame 72, a magnetic wheel 71 is mounted on the motor 7, and power is transmitted between the magnetic wheel 71 and the magnetic shaft sleeve 4 through magnetic force;
before the balance detection is carried out on the rotor, a worker adjusts the positions of the supports 2 on the base 1 according to the length of the rotor, so that the distance between the two supports 2 is larger than or equal to the length of the rotor, the detection device is convenient for adapting to the rotors of different types, and the detection on the balance of the rotor can be normally carried out, meanwhile, when the detection is carried out, the worker installs the magnetic sleeve 4 on the rotor shaft 3 of the rotor, then the worker inserts the rotor shaft 3 with the magnetic sleeve 4 between the baffle frame 22 and the trapezoid groove 23, the magnetic sleeve 4 is suspended between the trapezoid groove 23 and the baffle frame 22 under the action of magnetic force, the rotor is installed on the detection device, then the worker starts the motor 7 through the controller, and the motor 7 drives the rotor to rotate through the magnetic connection between the magnetic wheel 71 and the magnetic sleeve 4, and during the rotation of the rotor, the vibration data of the rotor is detected and collected through the sensor 6, so that the balance condition of the rotor is obtained;
Meanwhile, due to the baffle plates 51 arranged on the support 2, after the distance between the support 2 is adjusted by the staff, the installation position of the baffle plates 51 can be adjusted by the staff, so that the baffle plates 51 can be in contact with the end face of the rotor shaft 3, the axial position of the rotor in the detection device is conveniently limited by the baffle plates 51, and the phenomenon that the rotor is displaced or separated from the detection device during detection, so that the detection is influenced and potential safety hazards are generated is avoided;
Meanwhile, the resultant force generated by the magnet arranged in the trapezoid groove 23 on the magnetic shaft sleeve 4 is vertically upward, so that the rotor arranged on the support 2 can be stably supported, friction generated by mutual contact between the rotor and the support 2 is avoided through a suspension structure between the rotor and the support 2, the service life of the detection device and the subsequent normal use of the rotor are influenced, meanwhile, the motor 7 rotates through the magnetic connection between the magnetic wheel 71 and the magnetic shaft sleeve 4, the rotor is further ensured to be in a suspension state in the detection device, friction interference on the rotor in the detection process and interference on the rotor by the traditional belt transmission are avoided, so that interference on the rotor detection process caused by power transmission is avoided, and the accuracy of the detection result is improved;
meanwhile, the surface of the magnet in the trapezoid groove 23 is flush with the surface of the inner wall, and a layer of plastic film is arranged on the surface of the trapezoid groove 23 so as to protect the magnet arranged on the surface of the trapezoid groove 23, and impurities such as dust fall onto the magnet when the detection device is used and are adsorbed by the magnet, so that the detection device is difficult to clean.
As an embodiment of the present invention, a plurality of groups of magnets are mounted on the trapezoid groove 23, a connection groove 43 is formed on the inner wall of the magnetic sleeve 4, a clamping block 431 is mounted in the connection groove 43, and the magnetic sleeves 4 are mutually spliced through the connection groove 43 and the clamping block 431;
When detecting the rotors of different types, the quality of the rotors is different, therefore, through mutual splicing among the magnetic sleeves 4 and installing a plurality of groups of magnets which are arranged side by side on the trapezoid groove 23, in the detection process, when detecting the rotor with relatively large quality, a plurality of magnetic sleeves 4 can be installed on the rotor shaft 3 of the rotor and spliced mutually, so that the spliced magnetic sleeves 4 correspond to more magnets mutually to obtain larger supporting force, thereby providing sufficient support for the rotor with relatively large quality, ensuring that the rotor is still in a 'suspension' state, avoiding the contact of the rotor and the support 2, causing abrasion of the support 2 and the rotor, influencing the detection performance and detection effect, and meanwhile, through the splicing quantity of the magnetic sleeves 4, the magnetic sleeves 4 can obtain supporting forces with different sizes on the support 2 so as to detect the rotors with different types and qualities, and ensure the supporting effect on the rotor in the detection process.
As an embodiment of the present invention, the magnetic sleeve 4 includes a fixed sleeve 41 and an extension sleeve 42 with the same structure, and the fixed sleeve 41 and the extension sleeve 42 are connected through a connecting slot 43 and a clamping block 431;
A fixing bag 44 is installed in the fixing sleeve 41, the fixing bag 44 is used for fixing the rotor shaft 3 inserted into the fixing sleeve 41, the part of the fixing bag 44 contacting the fixing sleeve 41 is an outer side wall 441, and the part of the fixing bag 44 contacting the rotor shaft 3 is an inner side wall 442;
through the fixed bag 44 installed in the fixed sleeve 41, after the rotor shaft 3 is inserted into the fixed sleeve 41, the fixed bag 44 is in contact with the rotor shaft 3 and fixes the rotor shaft 3, so that the fixed sleeve 41 and the rotor shaft 3 are fully fixed with each other, meanwhile, as the fixed bag 44 has elasticity, when detecting rotors of different types, the fixed sleeve 41 can be fixed on the rotor shafts 3 of different diameters, the applicability of the detection device is enlarged, and meanwhile, the rotor shaft 3 is fixed through the fixed bag 44, so that the fixed sleeve 41 of the same type can be used when detecting the rotors of different types, the disassembly and the replacement of the detection device are reduced, and the detection is convenient;
Meanwhile, through the fixed sleeve 41 and the extension sleeve 42, when the supporting force needs to be increased or reduced, the magnetic shaft sleeve 4 can be conveniently adjusted through the increase and the disassembly of the extension sleeve 42, the difficulty and the complexity of adjusting the detection device are reduced, and the operation of staff is facilitated.
As an embodiment of the present invention, elastic pieces 46 are uniformly installed around the center line in the fixing bag 44, and two ends of the elastic pieces 46 are respectively connected to the inner sidewall 442 and the outer sidewall 441;
Because the fixing bag 44 can be contacted with the rotor shaft 3 for a long time, and the insertion and extraction between the rotor shaft 3 and the fixing bag 44 exist, the fixing bag 44 can bear larger using pressure and abrasion, therefore, the evenly distributed elastic sheets 46 are arranged inside the fixing bag 44, the elasticity of the elastic sheets 46 is utilized to enable the inner side wall 442 and the outer side wall 441 of the fixing bag 44 to keep sufficient elasticity, namely, the fixing bag 44 can sufficiently fix the rotor shaft 3 inserted into the middle, meanwhile, when the fixing bag 44 keeps sufficient elasticity through the action of the elastic sheets 46 and sufficiently fixes the rotor shaft 3, the inside of the fixing bag 44 can be free from being filled with liquid or gas, so that the external dimension of the fixing bag 44 is prevented from deforming under the action of internal pressure, the difficulty that the fixing sleeve 41 is mounted on the rotor shaft 3 is avoided, and meanwhile, the influence on the normal use of the detection device or the pollution of the detection device and the pollution of the rotor to be detected can be avoided when the surface of the fixing bag 44 is damaged and worn in the long-term use process of the fixing sleeve 41.
As an embodiment of the present invention, a pull rope 47 is installed in the fixing bag 44, two ends of the pull rope 47 are respectively connected to the inner sidewall 442 and the outer sidewall 441, the pull rope 47 is distributed along a tangential direction of the inner sidewall 442, and a linear velocity direction of the fixing sleeve 41 when rotating is opposite to a direction of the pull rope 47 facing the outer sidewall 441;
Since the elastic sheets 46 are distributed along the radial direction, the inner side wall 442 and the outer side wall 441 of the fixing bag 44 are connected with each other, so that when the diameter of the rotor shaft 3 is relatively small, the distance between the inner side wall 442 and the outer side wall 441 of the fixing bag 44 is relatively large, at this time, the fixing bag 44 has the possibility of deformation under the high rotation speed during detection, that is, the strength of the elastic sheets 46 is insufficient, so that certain dislocation exists between the inner side wall 442 and the outer side wall 441 of the fixing bag 44, the detection or the detection accuracy is easily affected, and meanwhile, the stay cord 47 is installed between the inner side wall 442 and the outer side wall 441, and the connection and fixation between the inner side wall 442 and the outer side wall 441 are carried out through the stay cord 47 arranged along the tangential direction, so that the dislocation between the inner side wall 442 and the outer side wall 441 is effectively avoided, and the detection is normally carried out and the detection accuracy is prevented from being affected.
As an embodiment of the present invention, an adjusting ring 45 is rotatably installed on the outer wall of the fixing sleeve 41, and the adjusting ring 45 is fixed on the fixing sleeve 41 by a fixing screw 451;
one end of the pull rope 47, which is far away from the inner side wall 442, passes through the outer side wall 441 and the fixed sleeve 41 to be connected to the adjusting ring 45;
When detecting the rotor shaft 3 with relatively larger diameter, the diameter difference between the rotor shaft 3 and the through hole on the fixing bag 44 is larger, at this time, when the fixing sleeve 41 is installed on the rotor shaft 3, the friction between the fixing sleeve 41 and the rotor shaft 3 is relatively larger, the abrasion on the fixing bag 44 is larger, and the installation difficulty is also relatively larger, therefore, after the fixing screw 451 is loosened by a worker, the adjusting ring 45 rotates, one end of the pull rope 47 is pulled between the adjusting ring 45 and the fixing sleeve 41, so that the length of the free part of the pull rope 47 positioned inside the fixing bag 44 is shortened, the distance between the inner side wall 442 and the outer side wall 441 on the fixing bag 44 is shortened, the diameter of the through hole on the fixing bag 44 is increased, the abrasion on the fixing sleeve 41 and the rotor shaft 3 with relatively larger diameter is reduced, the abrasion on the fixing sleeve 41 and the fixing bag 44 is reduced, and the service life of the fixing bag 44 is prolonged.
As an embodiment of the present invention, the diameter of the end of the fixing sleeve 41 near the rotor is larger than the diameter of the end of the fixing sleeve 41 far from the rotor;
Because fixed bag 44 internally mounted has elastic sheet 46, make fixed bag 44 can keep relatively accurate, fixed overall dimension under the effect of elastic sheet 46, consequently, through the setting to the elastic sheet 46 shape for the diameter that fixed bag 44 is close to the one end of rotor is greater than the other end, thereby when installing fixed cover 41 on rotor shaft 3, the staff can be convenient install, reduce the installation degree of difficulty, simultaneously, also can make the staff discern the direction of fixed cover 41 easily, avoid installing the direction of fixed cover 41 error when the installation, influence detection device's going on.
A motor rotor balance detection method, the detection method being suitable for use in a motor rotor balance detection apparatus according to any one of the above, the detection method comprising the steps of:
A1: according to the length of the rotor to be detected and the weight of the rotor, the distance between the manufacture on the base 1 is adjusted;
A2: mounting the magnetic sleeve 4 to the rotor shaft 3; before installation, the free length of the pull rope 47 is adjusted by rotating the adjusting ring 45, and the diameter of the inner side wall 442 on the fixed bag 44 is changed so as to adapt to the diameter of the rotor shaft 3;
A3: placing the rotor with the magnetic sleeve 4 mounted between the trapezoid groove 23 and the baffle frame 22 on the support 2, and keeping the baffle plate 51 in contact with the end face of the rotor shaft 3;
a4: starting a motor 7 on the detection device through a controller, and driving the rotor to rotate through magnetic force transmission between the magnetic wheel 71 and the magnetic shaft sleeve 4, so that the sensor 6 detects vibration data of the rotor during rotation, and a dynamic balance detection result of the rotor is obtained;
A5: and after the detection is finished, the rotor is taken down, and then the steps A2-A4 are repeated, so that a new rotor to be detected is detected.
The specific working procedure is as follows:
before the balance detection is carried out on the rotor, a worker adjusts the positions of the supports 2 on the base 1 according to the length of the rotor, so that the distance between the two supports 2 is larger than or equal to the length of the rotor, the detection device is convenient for adapting to the rotors of different types, and the detection on the balance of the rotor can be normally carried out, meanwhile, when the detection is carried out, the worker installs the magnetic sleeve 4 on the rotor shaft 3 of the rotor, then the worker inserts the rotor shaft 3 with the magnetic sleeve 4 between the baffle frame 22 and the trapezoid groove 23, the magnetic sleeve 4 is suspended between the trapezoid groove 23 and the baffle frame 22 under the action of magnetic force, the rotor is installed on the detection device, then the worker starts the motor 7 through the controller, and the motor 7 drives the rotor to rotate through the magnetic connection between the magnetic wheel 71 and the magnetic sleeve 4, and during the rotation of the rotor, the vibration data of the rotor is detected and collected through the sensor 6, so that the balance condition of the rotor is obtained;
Meanwhile, due to the baffle plates 51 arranged on the support 2, after the distance between the support 2 is adjusted by the staff, the installation position of the baffle plates 51 can be adjusted by the staff, so that the baffle plates 51 can be in contact with the end face of the rotor shaft 3, the axial position of the rotor in the detection device is conveniently limited by the baffle plates 51, and the phenomenon that the rotor is displaced or separated from the detection device during detection, so that the detection is influenced and potential safety hazards are generated is avoided;
Meanwhile, the resultant force generated by the magnet arranged in the trapezoid groove 23 on the magnetic shaft sleeve 4 is vertically upward, so that the rotor arranged on the support 2 can be stably supported, friction generated by mutual contact between the rotor and the support 2 is avoided through a suspension structure between the rotor and the support 2, the service life of the detection device and the subsequent normal use of the rotor are influenced, meanwhile, the motor 7 rotates through the magnetic connection between the magnetic wheel 71 and the magnetic shaft sleeve 4, the rotor is further ensured to be in a suspension state in the detection device, friction interference on the rotor in the detection process and interference on the rotor by the traditional belt transmission are avoided, so that interference on the rotor detection process caused by power transmission is avoided, and the accuracy of the detection result is improved;
Meanwhile, the surface of the magnet in the trapezoid groove 23 is level with the surface of the inner wall, and a layer of plastic film is arranged on the surface of the trapezoid groove 23 so as to protect the magnet arranged on the surface of the trapezoid groove 23, and impurities such as dust are prevented from falling onto the magnet when the detection device is used and are adsorbed by the magnet, so that the detection device is difficult to clean;
When detecting different types of rotors, the quality of the different rotors is different, therefore, through mutual splicing among the magnetic sleeves 4 and installing a plurality of groups of magnets which are arranged side by side on the trapezoid groove 23, in the detection process, when detecting the rotor with relatively large quality, a plurality of magnetic sleeves 4 are installed on the rotor shaft 3 of the rotor and spliced mutually, so that the spliced magnetic sleeves 4 correspond to more magnets mutually to obtain larger supporting force, thereby providing sufficient support for the rotor with relatively large quality, ensuring that the rotor is still in a 'suspension' state, avoiding the contact of the rotor with the support 2, causing abrasion of the support 2 and the rotor, influencing the detection performance and detection effect, and meanwhile, through the splicing quantity of the magnetic sleeves 4, the magnetic sleeves 4 can obtain supporting forces with different sizes on the support 2 so as to detect the rotor with different types and qualities, and ensure the supporting effect on the rotor in the detection process;
through the fixed bag 44 installed in the fixed sleeve 41, after the rotor shaft 3 is inserted into the fixed sleeve 41, the fixed bag 44 is in contact with the rotor shaft 3 and fixes the rotor shaft 3, so that the fixed sleeve 41 and the rotor shaft 3 are fully fixed with each other, meanwhile, as the fixed bag 44 has elasticity, when detecting rotors of different types, the fixed sleeve 41 can be fixed on the rotor shafts 3 of different diameters, the applicability of the detection device is enlarged, and meanwhile, the rotor shaft 3 is fixed through the fixed bag 44, so that the fixed sleeve 41 of the same type can be used when detecting the rotors of different types, the disassembly and the replacement of the detection device are reduced, and the detection is convenient;
Meanwhile, by arranging the fixing sleeve 41 and the extension sleeve 42, when the supporting force needs to be increased or reduced, the magnetic shaft sleeve 4 can be conveniently adjusted by increasing and detaching the extension sleeve 42, so that the difficulty and complexity of adjusting the detection device are reduced, and the operation of staff is facilitated;
Because the fixing bag 44 can be contacted with the rotor shaft 3 for a long time, and the insertion and extraction between the rotor shaft 3 and the fixing bag 44 exist, the fixing bag 44 can bear larger using pressure and abrasion, therefore, the evenly distributed elastic sheets 46 are arranged in the fixing bag 44, so that the elasticity of the elastic sheets 46 is utilized to keep sufficient elasticity between the inner side wall 442 and the outer side wall 441 of the fixing bag 44, namely, the fixing bag 44 can sufficiently fix the rotor shaft 3 inserted in the middle, and meanwhile, when the fixing bag 44 keeps sufficient elasticity through the action of the elastic sheets 46 and sufficiently fixes the rotor shaft 3, the inside of the fixing bag 44 does not need to be filled with liquid or gas, so that the external dimension of the fixing bag 44 is prevented from deforming under the action of internal pressure, the difficulty that the fixing sleeve 41 is arranged on the rotor shaft 3 is avoided, and meanwhile, the gas or liquid leakage in the fixing bag 44 can be avoided when the surface of the fixing bag 44 is damaged and abraded in the long-term use process, the normal use of the detection device is influenced, or the detection device is polluted and the rotor to be detected is prevented from being polluted;
Since the elastic sheets 46 are distributed along the radial direction and connect the inner side wall 442 and the outer side wall 441 of the fixed bag 44 with each other, when the diameter of the rotor shaft 3 is relatively small, the distance between the inner side wall 442 and the outer side wall 441 of the fixed bag 44 is relatively large, at this time, the fixed bag 44 has the possibility of deformation at a high rotation speed during detection, that is, the strength of the elastic sheets 46 is insufficient, so that a certain dislocation exists between the inner side wall 442 and the outer side wall 441 of the fixed bag 44, which easily affects the detection or accuracy of detection, and meanwhile, by installing the pull rope 47 between the inner side wall 442 and the outer side wall 441, the situation that the dislocation exists between the inner side wall 442 and the outer side wall 441 of the fixed bag 44 at a high rotation speed is effectively avoided, and the detection is ensured to be normally performed and the accuracy is prevented from being affected;
When detecting the rotor shaft 3 with relatively larger diameter, the diameter difference between the rotor shaft 3 and the through hole on the fixed bag 44 is larger, at this time, when the fixed sleeve 41 is installed on the rotor shaft 3, the friction between the fixed sleeve 41 and the rotor shaft 3 is relatively larger, the abrasion on the fixed bag 44 is larger, and the installation difficulty is also relatively larger, therefore, after the fixing screw 451 is loosened by a worker, the adjusting ring 45 rotates, one end of the pull rope 47 is pulled between the adjusting ring 45 and the fixed sleeve 41, so that the length of the free part of the pull rope 47 positioned inside the fixed bag 44 is shortened, the distance between the inner side wall 442 and the outer side wall 441 on the fixed bag 44 is shortened, the diameter of the through hole on the fixed bag 44 is increased, the installation of the fixed sleeve 41 on the rotor shaft 3 with relatively larger diameter is facilitated, the abrasion on the fixed sleeve 41 and the rotor shaft 3 is reduced, and the service life of the fixed bag 44 is prolonged;
Because fixed bag 44 internally mounted has elastic sheet 46, make fixed bag 44 can keep relatively accurate, fixed overall dimension under the effect of elastic sheet 46, consequently, through the setting to the elastic sheet 46 shape for the diameter that fixed bag 44 is close to the one end of rotor is greater than the other end, thereby when installing fixed cover 41 on rotor shaft 3, the staff can be convenient install, reduce the installation degree of difficulty, simultaneously, also can make the staff discern the direction of fixed cover 41 easily, avoid installing the direction of fixed cover 41 error when the installation, influence detection device's going on.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The motor rotor balance detection device comprises a base (1), wherein a support (2) is symmetrically arranged on the base (1), a trapezoid groove (23) is formed in the support (2), a sensor (6) is arranged on the side wall of the support (2), and a rotor is placed on the trapezoid groove (23);
the method is characterized in that: the support (2) is provided with a mounting groove (21), a baffle frame (22) is arranged in the mounting groove (21), and the baffle frame (22) is positioned above the trapezoid groove (23);
A magnetic shaft sleeve (4) is sleeved on a rotor shaft (3) of the rotor, a magnet is arranged on the inner wall of the trapezoid groove (23), the baffle frame (22) is magnetic, and the magnetic shaft sleeve (4) is suspended between the trapezoid groove (23) and the baffle frame (22) under the action of magnetic force;
Install mounting bracket (5) on support (2), install baffle (51) on mounting bracket (5), the terminal surface of baffle (51) contact rotor shaft (3), install mount (72) on support (2), install motor (7) on mount (72), install magnetic wheel (71) on motor (7), pass through magnetic force transmission power between magnetic wheel (71) and magnetic shaft cover (4).
2. The motor rotor balance detection device according to claim 1, wherein: the magnetic shaft sleeve is characterized in that a plurality of groups of magnets which are arranged side by side are arranged on the trapezoid groove (23), a connecting groove (43) is formed in the inner wall of the magnetic shaft sleeve (4), a clamping block (431) is arranged in the connecting groove (43), and the magnetic shaft sleeve (4) is mutually spliced through the connecting groove (43) and the clamping block (431).
3. A rotor balance detection device for an electric machine (7) according to claim 2, characterized in that: the magnetic shaft sleeve (4) comprises a fixed sleeve (41) and an extension sleeve (42) which are identical in structure, and the fixed sleeve (41) and the extension sleeve (42) are connected through a connecting groove (43) and a clamping block (431);
the rotor shaft fixing device is characterized in that a fixing bag (44) is arranged in the fixing sleeve (41), the rotor shaft (3) inserted into the fixing sleeve (41) is fixed by the fixing bag (44), the part, which is contacted with the fixing sleeve (41), of the fixing bag (44) is an outer side wall (441), and the part, which is contacted with the rotor shaft (3), of the fixing bag (44) is an inner side wall (442).
4. A motor rotor balance detection apparatus according to claim 3, wherein: elastic sheets (46) are uniformly arranged in the fixed bag (44) around the central line, and two ends of each elastic sheet (46) are respectively connected with the inner side wall (442) and the outer side wall (441).
5. The motor rotor balance detection device according to claim 4, wherein: the fixing bag (44) is internally provided with a pull rope (47), two ends of the pull rope (47) are respectively connected to the inner side wall (442) and the outer side wall (441), the pull rope (47) is distributed along the tangential direction of the inner side wall (442), and the linear speed direction of the fixing sleeve (41) when rotating is opposite to the direction of the pull rope (47) facing the outer side wall (441).
6. The motor rotor balance detection device according to claim 5, wherein: an adjusting ring (45) is rotatably arranged on the outer wall of the fixed sleeve (41), and the adjusting ring (45) is fixed on the fixed sleeve (41) through a fixing screw (451);
one end of the pull rope (47) far away from the inner side wall (442) passes through the outer side wall (441) and the fixing sleeve (41) to be connected to the adjusting ring (45).
7. The motor rotor balance detection device according to claim 6, wherein: the diameter of the end, close to the rotor, of the fixing sleeve (41) is larger than that of the end, far away from the rotor, of the fixing sleeve (41).
8. A motor rotor balance detection method is characterized in that: the detection method is suitable for the motor rotor balance detection device according to claim 7, and the detection method comprises the following steps:
a1: according to the length of the rotor to be detected and the weight of the rotor, the distance between the supports (2) on the base (1) is adjusted;
a2: mounting a magnetic sleeve (4) to the rotor shaft (3); before installation, the free length of the pull rope (47) is adjusted by rotating the adjusting ring (45), and the diameter of the inner side wall (442) on the fixed bag (44) is changed so as to adapt to the diameter of the rotor shaft (3);
a3: placing the rotor with the magnetic shaft sleeve (4) mounted between a trapezoid groove (23) on the support (2) and the baffle frame (22), and keeping the baffle plate (51) in contact with the end face of the rotor shaft (3);
a4: starting a motor (7) on the detection device through a controller, and driving the rotor to rotate through magnetic force transmission between a magnetic wheel (71) and a magnetic shaft sleeve (4), so that a sensor (6) detects vibration data of the rotor during rotation, and a dynamic balance detection result of the rotor is obtained;
A5: and after the detection is finished, the rotor is taken down, and then the steps A2-A4 are repeated, so that a new rotor to be detected is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410164715.4A CN117705348B (en) | 2024-02-05 | 2024-02-05 | Motor rotor balance detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410164715.4A CN117705348B (en) | 2024-02-05 | 2024-02-05 | Motor rotor balance detection device and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117705348A CN117705348A (en) | 2024-03-15 |
| CN117705348B true CN117705348B (en) | 2024-04-26 |
Family
ID=90162843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410164715.4A Active CN117705348B (en) | 2024-02-05 | 2024-02-05 | Motor rotor balance detection device and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117705348B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3952602A (en) * | 1971-03-03 | 1976-04-27 | Cambridge Thermionic Corporation | Rotor balancing apparatus and system |
| JPH02221832A (en) * | 1989-02-22 | 1990-09-04 | Fuji Xerox Co Ltd | Adjusting device for rotation balance |
| JP2001194257A (en) * | 2000-01-14 | 2001-07-19 | Denso Corp | Balance measuring instrument for rotating body and measuring method thereof |
| CN106870634A (en) * | 2015-12-10 | 2017-06-20 | 斯凯孚磁浮机电有限公司 | For the balance method of the rotor of balance rotating machine at high speeds |
| CN108801551A (en) * | 2018-08-28 | 2018-11-13 | 北京精密机电控制设备研究所 | A kind of ferromagnetism rotor dynamic balance testing device |
| CN210638848U (en) * | 2019-11-19 | 2020-05-29 | 麦格雷博电子(深圳)有限公司 | Dynamic balance table magnetism detects all-in-one |
| CN113029440A (en) * | 2021-03-23 | 2021-06-25 | 华驰动能(北京)科技有限公司 | Method for inhibiting dynamic unbalance vibration of magnetic suspension rotor |
| CN115638922A (en) * | 2022-11-29 | 2023-01-24 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Dynamic balance test platform for high-speed motor rotor |
-
2024
- 2024-02-05 CN CN202410164715.4A patent/CN117705348B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3952602A (en) * | 1971-03-03 | 1976-04-27 | Cambridge Thermionic Corporation | Rotor balancing apparatus and system |
| JPH02221832A (en) * | 1989-02-22 | 1990-09-04 | Fuji Xerox Co Ltd | Adjusting device for rotation balance |
| JP2001194257A (en) * | 2000-01-14 | 2001-07-19 | Denso Corp | Balance measuring instrument for rotating body and measuring method thereof |
| CN106870634A (en) * | 2015-12-10 | 2017-06-20 | 斯凯孚磁浮机电有限公司 | For the balance method of the rotor of balance rotating machine at high speeds |
| CN108801551A (en) * | 2018-08-28 | 2018-11-13 | 北京精密机电控制设备研究所 | A kind of ferromagnetism rotor dynamic balance testing device |
| CN210638848U (en) * | 2019-11-19 | 2020-05-29 | 麦格雷博电子(深圳)有限公司 | Dynamic balance table magnetism detects all-in-one |
| CN113029440A (en) * | 2021-03-23 | 2021-06-25 | 华驰动能(北京)科技有限公司 | Method for inhibiting dynamic unbalance vibration of magnetic suspension rotor |
| CN115638922A (en) * | 2022-11-29 | 2023-01-24 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Dynamic balance test platform for high-speed motor rotor |
Non-Patent Citations (3)
| Title |
|---|
| 利用磁悬浮技术提高动平衡精度及平台设计;曾周亮;;邵阳学院学报(自然科学版);20081220(04);全文 * |
| 磁悬浮高速转子基于位移刚度力超前前馈补偿的高精度自动平衡方法;魏彤;向岷;;机械工程学报;20120820(16);全文 * |
| 采用新型电磁动平衡装置的动平衡研究;马石磊 等;西安交通大学学报;20120331;46(3);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117705348A (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103595202B (en) | The dynamically balanced method of calibration of a kind of rotor | |
| CN108801551B (en) | Strong magnetic motor rotor dynamic balance testing arrangement | |
| CN109525086B (en) | Single-station semi-automatic dynamic balance adjusting device | |
| CN110346086A (en) | A kind of dynamic balancing machine and its application method moving vane rotor suitable for self-powered | |
| KR101192978B1 (en) | Armature balance testing apparatus | |
| CN117705348B (en) | Motor rotor balance detection device and detection method thereof | |
| CN218584266U (en) | Motor rotor dynamic balance testing and correcting device | |
| CN115468870B (en) | Multiaxial rotary bending fatigue testing machine | |
| CN115508007B (en) | Propeller blade dynamic balance detection device | |
| CN210221391U (en) | Dynamic balancing machine suitable for self-driven impeller rotor | |
| CN113447202B (en) | Method for adjusting rotor balance | |
| CN115683454A (en) | Micromotor rotor dynamic balance detection device | |
| CN110905731B (en) | Dynamic balance method of wind power generator | |
| CN109655265A (en) | A kind of magnetic suspension shafting protection bearing performance test machine | |
| CN210603581U (en) | Vibration detection and fault diagnosis device for portable rotary machine spindle | |
| CN209858330U (en) | Friction wear test device | |
| CN210893510U (en) | Rotating force detection device for structural design of permanent magnet linear rotating motor | |
| CN209961400U (en) | Large-scale reel static balance test device with balance disc | |
| CN218796562U (en) | Centrifuge hanging basket convenient for balancing | |
| CN214583821U (en) | Rotor dynamic balancing instrument | |
| CN220454858U (en) | High-precision bearing testing machine for central control rotating plane | |
| CN212621273U (en) | Dynamic balancing instrument performance detection device | |
| CN221238560U (en) | Balance measuring machine | |
| CN216524562U (en) | Impeller dynamic balance detection device | |
| CN211670744U (en) | Full-automatic balance correction equipment for motor rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |