CN115468705A - Device and method for testing dynamic balance of motor rotor - Google Patents
Device and method for testing dynamic balance of motor rotor Download PDFInfo
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- CN115468705A CN115468705A CN202211140980.6A CN202211140980A CN115468705A CN 115468705 A CN115468705 A CN 115468705A CN 202211140980 A CN202211140980 A CN 202211140980A CN 115468705 A CN115468705 A CN 115468705A
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- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
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- 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
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- 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
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Abstract
The invention relates to the technical field related to motor test, in particular to a device and a method for testing the dynamic balance of a motor rotor, wherein the device for testing the dynamic balance of the motor rotor comprises a base and two vertical plates, the two vertical plates are movably arranged on the base, an arc-shaped opening is formed in the top end of each vertical plate, the two vertical plates are connected with a bidirectional driving mechanism arranged on the base, the detection mechanism is provided with a group of transverse plates at the side parts of the two vertical plates and connected with the bidirectional driving mechanism, when a rotor to be tested vibrates during rotation, the detection mechanism is triggered and gives an alarm, the base is also movably provided with a transverse plate connected with a meshing moving mechanism arranged on the base, and the meshing moving mechanism is connected with the driving mechanism arranged on the transverse plate.
Description
Technical Field
The invention relates to the technical field related to dynamic balance testing, in particular to a device and a method for testing the dynamic balance of a motor rotor.
Background
The rotating bodies supported by the bearings are called rotors, and in the motor, the rotor is a rotating part and is composed of a rotating shaft, a rotor core and a rotor winding. If the balance performance of the rotor is not good, the rotor can vibrate in the rotating process, noise is generated, the service life of a product is greatly influenced, and therefore dynamic balance detection needs to be carried out before the rotor is installed in the motor.
At present, the dynamic balance technology of some generator manufacturers only stays at the stage of the traditional single-side three-point weight test method, the method is mainly carried out by depending on the experience of workers, on one hand, the accuracy of the test effect is poor due to certain requirements on the experience of the workers, and on the other hand, the waste of manpower, material resources and energy sources, the delay of the construction period and the like are easily caused.
Disclosure of Invention
The invention aims to provide a device and a method for testing the dynamic balance of a motor rotor, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a testing arrangement of electric motor rotor dynamic balance, includes the base, still includes:
the two vertical plates are movably arranged on the base, an arc-shaped opening is formed in the top end of each vertical plate and used for bearing the end portion of the rotor to be measured, and the two vertical plates are connected with a bidirectional driving mechanism arranged on the base;
the detection mechanisms are respectively arranged on the side parts of the two vertical plates in a group and are connected with the bidirectional driving mechanism, and when a rotor to be detected generates vibration during rotation, the detection mechanisms are triggered and give an alarm;
the diaphragm, the diaphragm activity sets up on the base, and with install meshing moving mechanism on the base is connected, meshing moving mechanism still is connected with and installs actuating mechanism on the diaphragm, when the test, be connected the belt between actuating mechanism and the rotor that awaits measuring, be used for the drive the rotor rotates.
As a further scheme of the invention: the bidirectional driving mechanism comprises two bidirectional screw rods and two transverse moving plates, the two bidirectional screw rods are rotatably installed on the base and connected through a first transmission belt, the two transverse moving plates are arranged on the base, the two bidirectional screw rods penetrate through the two transverse moving plates and are in threaded connection with the two transverse moving plates, and the two vertical plates are fixedly installed on the two transverse moving plates respectively.
As a still further scheme of the invention: the detection mechanism comprises a telescopic assembly and an alarm piece, the telescopic assembly is installed on the transverse moving plate and comprises a vertical plate which is fixedly installed on the transverse moving plate and is hollow inside and a telescopic plate which is arranged in the vertical plate in a sliding mode, and an elastic sliding piece is connected between the telescopic plate and the vertical plate.
As a still further scheme of the invention: the elastic sliding part comprises a guide post fixedly arranged on one side of the vertical plate, which is far away from the vertical plate, and a protruding part arranged on one side of the telescopic plate, which is far away from the vertical plate, the protruding part is connected with the guide post in a sliding manner, and a through groove for the protruding part to move is formed in the vertical plate;
and the periphery of the guide post is also sleeved with a cylindrical spring, one end of the cylindrical spring is connected with the boss, and the other end of the cylindrical spring is connected with one end of the guide post, which is far away from the transverse moving plate.
As a still further scheme of the invention: the alarm part comprises a round roller rotatably arranged at one end of the telescopic plate, which faces the vertical plate, a movable contact arranged at the top end of the telescopic plate and a static contact movably arranged above the movable contact, and the round roller is positioned above the arc-shaped opening;
the fixed contact is connected with a lifting structure arranged on the side of the vertical plate, the fixed contact is connected with an alarm, the moving contact and the fixed contact are both connected with a power supply, and when the rotor vibrates in the rotating process, the moving contact and the fixed contact are combined to enable the alarm to give an alarm.
As a still further scheme of the invention: the lifting structure comprises a first one-way screw rod rotatably mounted on the side portion of the vertical plate and a lifting plate in threaded connection with the first one-way screw rod, the static contact is mounted on the lifting plate, and the lifting plate is in sliding fit with the side portion of the vertical plate.
As a still further scheme of the invention: the base is further fixedly provided with two cross rods, the cross plates are arranged on the two cross rods in a sliding manner, the driving mechanism comprises a motor arranged on the cross plates and a rotating part fixed on an output shaft of the motor, a plurality of through holes are formed in the rotating part along the circumference at equal intervals, a sliding plate is arranged in each through hole in a sliding manner, and a connecting piece is fixed at one end, away from the center of the rotating part, of each sliding plate;
the connecting piece is arc-shaped and is used for being connected with the rotor to be tested through a belt, and one end of the sliding plate, which is far away from the connecting piece, is connected with a push-pull structure arranged on the transverse plate.
As a still further scheme of the invention: the push-pull structure comprises a second one-way screw rod rotatably mounted on the transverse plate, a threaded sleeve sleeved on the second one-way screw rod and in threaded connection with the second one-way screw rod, and a rotating ring rotatably mounted on the threaded sleeve and facing one end of the rotating member, wherein a plurality of push-pull rods are rotatably mounted on the rotating ring at equal intervals along the circumference, and one end, far away from the rotating ring, of each push-pull rod is hinged to the sliding plate.
As a still further scheme of the invention: the meshing moving mechanism comprises a gear which is rotatably installed on the transverse plate and a rack plate fixed on the base, the gear is meshed with teeth on the rack plate, and a rotating shaft of the gear is connected with the second one-way screw rod through a second transmission belt.
A method for testing the dynamic balance of a motor rotor by using the testing device comprises the following steps:
step one, adjusting the distance between two vertical plates through a bidirectional driving mechanism;
step two, erecting the rotor to be measured between two vertical plates, and enabling the rotor to penetrate through a belt arranged on a rotating part;
adjusting the initial distance between the moving contact and the static contact;
driving the connecting pieces to perform expansion movement through the push-pull structure, and increasing the distance between the connecting pieces and the rotor by the meshing moving mechanism;
and fifthly, the motor works to drive the rotor to rotate, and if the moving contact is combined with the fixed contact, the alarm gives an alarm to indicate that the balance of the rotor is unqualified.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, when in test, the rotor can be quickly installed and connected by matching the driving mechanism with the meshing moving mechanism and adjusting the distance between the two vertical plates by the bidirectional driving mechanism, thereby saving labor and improving the detection efficiency, and the test result of the rotor balance is reflected by whether the moving contact is contacted with the static contact or not, namely whether the alarm gives an alarm or not, without depending on the experience of working personnel, and the accuracy of the test result is high.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a testing apparatus for dynamic balance of a motor rotor.
Fig. 2 is a schematic structural diagram of another angle of an embodiment of a testing apparatus for dynamic balance of a motor rotor.
Fig. 3 is a schematic structural diagram of another angle of an embodiment of a testing device for dynamic balance of a motor rotor.
Fig. 4 is an enlarged view of a structure at a in fig. 2.
Fig. 5 is an enlarged view of the structure at B in fig. 3.
Fig. 6 is an exploded view of the structure of a detection mechanism in an embodiment of the testing device for the dynamic balance of the motor rotor.
Fig. 7 is an exploded view of the structure of a driving mechanism in an embodiment of the testing device for the dynamic balance of the motor rotor.
In the figure: 1. a base; 2. a vertical plate; 3. a transverse plate; 4. a bidirectional screw rod; 5. a first drive belt; 6. transversely moving the plate; 7. a round roller; 8. a first one-way lead screw; 9. a lifting plate; 10. a cylindrical spring; 11. a vertical plate; 12. a retractable plate; 13. a guide post; 14. a boss portion; 15. a moving contact; 16. static contact; 17. a rotating member; 18. a motor; 19. a cross bar; 20. a second one-way screw rod; 21. a threaded sleeve; 22. a rotating ring; 23. a push-pull rod; 24. a slide plate; 25. a connecting member; 26. a port; 27. a gear; 28. a rack plate; 29. a second belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1-7, in an embodiment of the present invention, a testing apparatus for dynamic balance of a motor rotor includes a base 1 and two vertical plates 2, two vertical plates 2 are movably disposed on the base 1, an arc-shaped opening is formed at a top end of each vertical plate 2 for receiving an end of a rotor to be tested, and the two vertical plates 2 are connected to a bidirectional driving mechanism mounted on the base 1.
Referring to fig. 1 again, the bidirectional driving mechanism includes two bidirectional screws 4 rotatably mounted on the base 1 and connected by a first transmission belt 5, and two traverse plates 6 disposed on the base 1, the two bidirectional screws 4 penetrate through and are in threaded connection with the two traverse plates 6, and the two vertical plates 2 are respectively and fixedly mounted on the two traverse plates 6.
When the use of reality, erect the arc mouth on riser 2 with the both ends of the rotor that awaits measuring, when the rotor of different specifications is tested to needs, rotate one of them two-way lead screw 4, then, two-way lead screw 4 alright rotate in step through first drive belt 5, and then, two sideslip boards 6 carry out screw-thread fit with two-way lead screw 4, and keep away from each other or be close to the motion, correspondingly, interval increase or reduction between two risers 2, so, make the device satisfy the requirement that can place different model rotors, and then can carry out the dynamic balance test experiment of different model rotors.
It should be noted that, because the rotation speed of the rotor is high during the test, in order to place the test result with deviation, the arc-shaped opening at the top end of the vertical plate 2 is coated with a wear-resistant layer, so that the service life of the device is prolonged.
The detection mechanism is arranged on the two side portions of the vertical plates 2 respectively and connected with the bidirectional driving mechanism, and when the rotor to be detected vibrates in rotation, the detection mechanism triggers and gives an alarm.
Referring to fig. 4 and 6 again, the detection mechanism includes a telescopic assembly and an alarm member, the telescopic assembly is mounted on the traverse plate 6, the telescopic assembly includes a vertical plate 11 and a telescopic plate 12, the vertical plate 11 is fixedly mounted on the traverse plate 6 and is hollow inside, the telescopic plate 12 is slidably disposed in the vertical plate 11, and an elastic sliding member is connected between the telescopic plate 12 and the vertical plate 11.
Elastic sliding element includes fixed mounting riser 11 deviates from guide post 13 on one side of riser 2 and set up in expansion plate 12 deviates from the bellying 14 on one side of riser 2, bellying 14 with guide post 13 sliding connection, just still begin to have on riser 11 and be used for supplying the logical groove of bellying 14 activity. The periphery of the guide column 13 is further sleeved with a cylindrical spring 10, one end of the cylindrical spring 10 is connected with the boss 14, and the other end of the cylindrical spring is connected with one end, far away from the traverse plate 6, of the guide column 13.
The alarm part comprises a round roller 7 rotatably installed at one end, facing the vertical plate 2, of the expansion plate 12, a movable contact 15 installed at the top end of the expansion plate 12 and a fixed contact 16 movably arranged above the movable contact 15, and the round roller 7 is located above the arc-shaped opening. The fixed contact 16 is connected with a lifting structure arranged on the side of the vertical plate 11, the fixed contact 16 is connected with an alarm, the movable contact 15 and the fixed contact 16 are both connected with a power supply, and when the rotor vibrates in the rotating process, the movable contact 15 and the fixed contact 16 are combined to enable the alarm to give an alarm.
The lifting structure comprises a first one-way screw 8 rotatably mounted on the side of the vertical plate 11 and a lifting plate 9 in threaded connection with the first one-way screw 8, the static contact 16 is mounted on the lifting plate 9, and the lifting plate 9 is in sliding fit with the side of the vertical plate 11.
Specifically, a deep hole is formed in the bottom of the lifting plate 9, the deep hole is used for the first one-way screw rod 8 to extend into, and a thread meshed with the first one-way screw rod 8 is arranged on the inner wall of the deep hole.
During testing, two ends of a rotor to be tested are erected in arc-shaped openings in the vertical plate 2, the round roller 7 is moved to the upper portion of the rotor and tangent to the upper portion, the expansion plate 12 slides towards the outer portion of the vertical plate 11 in the process that the round roller 7 moves upwards in the moving process, correspondingly, the protruding portion 14 slides upwards on the guide column 13, the cylindrical spring 10 is compressed, and the round roller 7 is abutted to the rotor;
subsequently, the first one-way screw 8 is rotated, and the lifting plate 9 is in sliding fit with the side portion of the vertical plate 11, so that the lifting plate 9 is in threaded fit with the first one-way screw 8 and drives the static contact 16 to move up or down, adjustment of the distance between the movable contact 15 and the static contact 16 is achieved under the initial condition, the larger the initial distance between the movable contact 15 and the static contact 16 is, the larger the vibration amplitude of the rotor is required in the rotating process, the circular roller 7 can be moved up, the movable contact 15 and the static contact 16 are combined, the alarm is triggered, and an alarm is given out.
It should be noted that, after the rotating shafts at the two ends of the rotor are arranged in the arc-shaped opening, the rotating shafts are connected with the driving mechanism through the transmission belt, the driving position of the driving mechanism is lower than the horizontal height of the rotor, when the driving mechanism drives the rotor to rotate through the transmission belt, the rotor is pulled downwards in an inclined mode, at the moment, the rotor is guaranteed not to jump under the action of the transmission belt in the rotating process, and after the transmission belt is connected, the rotor has a tensile force.
Still fixed mounting has two horizontal poles 19 on the base 1, diaphragm 3 slides and sets up in two on the horizontal pole 19, just diaphragm 3 with install meshing moving mechanism on the base 1 is connected, meshing moving mechanism still is connected with and installs actuating mechanism on the diaphragm 3, when the test, be connected the belt between actuating mechanism and the rotor that awaits measuring, be used for the drive the rotor rotates.
Referring to fig. 7 again, the driving mechanism includes a motor 18 installed on the horizontal plate 3, and a rotating member 17 fixed on an output shaft of the motor 18, the rotating member 17 is provided with a plurality of through holes 26 at equal intervals along a circumference, and each through hole 26 is slidably provided with a sliding plate 24, and a connecting member 25 is fixed on an end of the sliding plate 24 away from a center of the rotating member 17;
the connecting piece 25 is arc-shaped and is used for being connected with a rotor to be tested through a belt, and one end of the sliding plate 24, which is far away from the connecting piece 25, is connected with a push-pull structure arranged on the transverse plate 3.
The push-pull structure comprises a second one-way screw rod 20 rotatably mounted on the transverse plate 3, a threaded sleeve 21 sleeved on the second one-way screw rod 20 and in threaded connection with the second one-way screw rod, and a rotating ring 22 rotatably mounted on the threaded sleeve 21 and facing one end of the rotating member 17, wherein a plurality of push-pull rods 23 are rotatably mounted on the rotating ring 22 at equal intervals along the circumference, one ends of the push-pull rods 23 far away from the rotating ring 22 are hinged to a sliding plate 24, and a guide member is further arranged between the threaded sleeve 21 and the transverse plate 3.
The guide member is not shown in the figure, and comprises a guide wheel mounted at the lower part of the threaded sleeve 21, the guide wheel is in rolling fit with the transverse plate 3 and is used for guiding the threaded sleeve 21 so as to ensure that the threaded sleeve 21 can be in threaded fit with the second unidirectional screw rod 20 to move when the second unidirectional screw rod 20 rotates.
During testing, the motor 18 can drive the rotating part 17 to rotate when working, so that the rotating part 17 can drive the rotor to rotate through the belt arranged between the rotor and the connecting part 25, and during testing of rotors with different specifications, the belt becomes an unmatched problem and normal transmission is difficult to guarantee, at the moment, the second one-way screw rod 20 can be rotated in a forward direction or a reverse direction, and the threaded sleeve 21 is in threaded fit with the second one-way screw rod 20 and moves;
when the second one-way screw rod 20 rotates forwards, the threaded sleeve 21 moves towards the rotating piece 17, the push-pull rod 23 pushes the sliding plate 24 to slide towards the position far away from the center of the rotating piece 17, and the connecting pieces 25 expand outwards at the same time, so that a belt between the connecting pieces 25 and the rotor can be tightened, and the subsequent normal transmission function is ensured;
on the contrary, when the second one-way screw rod 20 rotates reversely and the threaded sleeve 21 slides away from the rotating member 17, the threaded sleeve 21 will pull the sliding plate 24 to slide towards the center of the rotating member 17 through the push-pull rods 23, and the connecting members 25 are retracted.
Referring to fig. 3 and 5 again, the engaging moving mechanism includes a gear 27 rotatably mounted on the horizontal plate 3 and a rack plate 28 fixed on the base 1, the gear 27 is engaged with teeth on the rack plate 28, and a rotating shaft of the gear 27 is connected to the second unidirectional screw 20 through a second transmission belt 29.
When the second unidirectional screw rod 20 rotates forward, the threaded sleeve 21 pushes the plurality of connecting pieces 25 to perform an expanding action, and at the same time, the second unidirectional screw rod 20 drives the gear 27 to rotate through the second transmission belt 29, and further, the gear 27 is matched with the rack plate 28, so that the transverse plate 3 slides on the transverse rod 19 in a direction away from the vertical plate 2, and then, the distance between the rotating piece 17 and the rotor is increased, and the belt between the rotating piece 17 and the rotor is further tightened.
A method for testing the dynamic balance of a motor rotor by using the testing device comprises the following steps:
step one, adjusting the distance between two vertical plates 2 through a bidirectional driving mechanism;
step two, erecting the rotor to be measured between two vertical plates 2, and enabling the rotor to penetrate through a belt arranged on a rotating part 17;
adjusting the initial distance between the moving contact 15 and the static contact 16;
driving the plurality of connecting pieces 25 to perform expansion movement through the push-pull structure, and increasing the distance between the connecting pieces 25 and the rotor by the meshing moving mechanism;
and step five, the motor 18 works to drive the rotor to rotate, and if the movable contact 15 is combined with the static contact 16, the alarm gives an alarm to indicate that the balance of the rotor is unqualified.
When the testing device for the dynamic balance of the motor rotor is implemented specifically, two ends of a rotor to be tested are erected in arc-shaped openings of vertical plates 2, when the rotors with different specifications need to be tested, one of two-way screw rods 4 is rotated, so that the two-way screw rods 4 can synchronously rotate through a first transmission belt 5, and further, two transverse moving plates 6 are in threaded fit with the two-way screw rods 4 and move away from or close to each other, and correspondingly, the distance between the two vertical plates 2 is increased or decreased, so that the testing device can meet the requirement of placing the rotors with different models, and further, dynamic balance testing experiments of the rotors with different models can be carried out;
when two ends of a rotor to be measured are erected in arc-shaped openings of the vertical plate 2, the round roller 7 is abducted, moves upwards to the upper part of the rotor and is tangent to the upper part of the rotor, the expansion plate 12 slides outwards towards the vertical plate 11 in the abduction and upwards movement process of the round roller 7, correspondingly, the bulge part 14 slides upwards on the guide post 13, the cylindrical spring 10 is compressed, and the round roller 7 is abutted to the rotor;
subsequently, the first one-way screw rod 8 is rotated, and the lifting plate 9 is in sliding fit with the side part of the vertical plate 11, so that the lifting plate 9 is in threaded fit with the first one-way screw rod 8 and drives the static contact 16 to move upwards or downwards, the adjustment of the distance between the movable contact 15 and the static contact 16 is realized under the initial condition, the larger the initial distance between the movable contact 15 and the static contact 16 is, the larger vibration amplitude is required in the rotation process of the rotor, the circular roller 7 can be moved upwards, the movable contact 15 and the static contact 16 are combined, the alarm is triggered, and an alarm is given out, wherein the distance between the movable contact 15 and the static contact 16 is determined according to the amplitude range value of the qualified product rotor which needs to be detected at present, and is preferably the maximum value;
during testing, the motor 18 can drive the rotating part 17 to rotate when working, so that the rotating part 17 can drive the rotor to rotate through the belt arranged between the rotor and the connecting part 25, and during testing of rotors with different specifications, the belt becomes an unmatched problem and normal transmission is difficult to guarantee, at the moment, the second one-way screw rod 20 can be rotated in a forward direction or a reverse direction, and the threaded sleeve 21 is in threaded fit with the second one-way screw rod 20 and moves;
when the second one-way screw rod 20 rotates forwards, the threaded sleeve 21 moves towards the rotating piece 17, the push-pull rod 23 pushes the sliding plate 24 to slide towards the position far away from the center of the rotating piece 17, and the connecting pieces 25 expand outwards at the same time, so that a belt between the connecting pieces 25 and the rotor can be tightened, and the subsequent normal transmission function is ensured;
conversely, when the second one-way screw rod 20 rotates in the opposite direction, and the threaded sleeve 21 slides away from the rotating member 17, the threaded sleeve 21 pulls the sliding plate 24 to slide towards the center of the rotating member 17 through the push-pull rods 23, and the connecting members 25 contract;
when the second unidirectional screw rod 20 rotates forward, the threaded sleeve 21 pushes the plurality of connecting pieces 25 to perform an expanding action, and at the same time, the second unidirectional screw rod 20 drives the gear 27 to rotate through the second transmission belt 29, and further, the gear 27 is matched with the rack plate 28, so that the transverse plate 3 slides on the transverse rod 19 in a direction away from the vertical plate 2, and then, the distance between the rotating piece 17 and the rotor is increased, and the belt between the rotating piece 17 and the rotor is further tightened.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a testing arrangement of electric motor rotor dynamic balance which characterized in that, includes base (1), still includes:
the device comprises a base (1), two vertical plates (2) are movably arranged on the base (1), an arc-shaped opening is formed in the top end of each vertical plate (2) and used for bearing the end part of a rotor to be tested, and the two vertical plates (2) are connected with a bidirectional driving mechanism arranged on the base (1);
the detection mechanisms are respectively arranged on the side parts of the two vertical plates (2) and are connected with the bidirectional driving mechanism, and when a rotor to be detected generates vibration during rotation, the detection mechanisms are triggered and give an alarm;
diaphragm (3), diaphragm (3) activity sets up on base (1), and with install meshing moving mechanism on base (1) is connected, meshing moving mechanism still is connected with and installs actuating mechanism on diaphragm (3), when the test, the belt is connected between actuating mechanism and the rotor that awaits measuring, is used for the drive the rotor rotates.
2. The testing device for the dynamic balance of the rotor of the motor as claimed in claim 1, wherein the bidirectional driving mechanism comprises two bidirectional screws (4) rotatably mounted on the base (1) and connected through a first transmission belt (5), and two traverse plates (6) arranged on the base (1), the two bidirectional screws (4) penetrate through the two traverse plates (6) and are in threaded connection with the two traverse plates (6), and the two vertical plates (2) are respectively fixedly mounted on the two traverse plates (6).
3. The testing device for the dynamic balance of the motor rotor as recited in claim 2, wherein the detecting mechanism comprises a telescopic assembly and an alarm member, the telescopic assembly is mounted on the traverse plate (6), the telescopic assembly comprises a vertical plate (11) which is fixedly mounted on the traverse plate (6) and is hollow inside and a telescopic plate (12) which is slidably disposed in the vertical plate (11), and an elastic sliding member is connected between the telescopic plate (12) and the vertical plate (11).
4. The testing device for the dynamic balance of the motor rotor according to claim 3, wherein the elastic sliding part comprises a guide post (13) fixedly installed on one side of the vertical plate (11) departing from the vertical plate (2) and a protrusion (14) arranged on one side of the expansion plate (12) departing from the vertical plate (2), the protrusion (14) is slidably connected with the guide post (13), and a through groove for the protrusion (14) to move is further formed in the vertical plate (11);
the periphery of the guide post (13) is further sleeved with a cylindrical spring (10), one end of the cylindrical spring (10) is connected with the boss (14), and the other end of the cylindrical spring is connected with one end, far away from the transverse moving plate (6), of the guide post (13).
5. The testing device for the dynamic balance of the motor rotor as recited in claim 4, wherein the alarm comprises a round roller (7) rotatably mounted at one end of the expansion plate (12) facing the vertical plate (2), a movable contact (15) mounted at the top end of the expansion plate (12), and a fixed contact (16) movably arranged above the movable contact (15), the round roller (7) is located above the arc-shaped opening;
the static contact (16) is connected with a lifting structure arranged on the side of the vertical plate (11), the static contact (16) is connected with an alarm, the moving contact (15) and the static contact (16) are both connected with a power supply, and when the rotor vibrates in the rotating process, the moving contact (15) is combined with the static contact (16) so that the alarm gives an alarm.
6. The device for testing the dynamic balance of the motor rotor as recited in claim 5, wherein the lifting structure comprises a first unidirectional screw (8) rotatably mounted on a side portion of the vertical plate (11) and a lifting plate (9) in threaded connection with the first unidirectional screw (8), the static contact (16) is mounted on the lifting plate (9), and the lifting plate (9) is in sliding fit with the side portion of the vertical plate (11).
7. The testing device for the dynamic balance of the motor rotor is characterized in that two cross rods (19) are fixedly mounted on the base (1), the cross plate (3) is slidably arranged on the two cross rods (19), the driving mechanism comprises a motor (18) mounted on the cross plate (3) and a rotating member (17) fixed on an output shaft of the motor (18), a plurality of through holes (26) are formed in the rotating member (17) at equal intervals along the circumference, a sliding plate (24) is slidably arranged in each through hole (26), and a connecting member (25) is fixed at one end of the sliding plate (24) away from the center of the rotating member (17);
the connecting piece (25) is arc-shaped and is connected with the rotor to be tested through a belt, and one end, far away from the connecting piece (25), of the sliding plate (24) is connected with a push-pull structure arranged on the transverse plate (3).
8. The testing device for the dynamic balance of the motor rotor as recited in claim 7, wherein the push-pull structure comprises a second one-way screw rod (20) rotatably mounted on the transverse plate (3), a threaded sleeve (21) sleeved on the second one-way screw rod (20) and in threaded connection therewith, and a rotating ring (22) rotatably mounted on one end of the threaded sleeve (21) facing the rotating member (17), wherein a plurality of push-pull rods (23) are rotatably mounted on the rotating ring (22) at equal intervals along a circumference, one end of each push-pull rod (23) far away from the rotating ring (22) is hinged to the sliding plate (24), and a guide is further disposed between the threaded sleeve (21) and the transverse plate (3).
9. The testing device for the dynamic balance of the motor rotor as recited in claim 8, wherein the meshing moving mechanism comprises a gear (27) rotatably mounted on the transverse plate (3) and a rack plate (28) fixed on the base (1), the gear (27) is engaged with teeth on the rack plate (28), and the rotating shaft of the gear (27) is connected with the second one-way screw (20) through a second transmission belt (29).
10. A method for dynamic balance testing of a rotor of an electrical machine using a testing apparatus according to any of claims 1-9, comprising the steps of:
step one, adjusting the distance between two vertical plates (2) through a bidirectional driving mechanism;
step two, erecting the rotor to be measured between two vertical plates (2), and enabling the rotor to penetrate through a belt arranged on a rotating part (17);
adjusting the initial distance between the moving contact (15) and the static contact (16);
driving the connecting pieces (25) to perform expansion movement through the push-pull structure, and increasing the distance between the connecting pieces (25) and the rotor by the meshing moving mechanism;
and step five, the motor (18) works to drive the rotor to rotate, and if the movable contact (15) is combined with the fixed contact (16), the alarm gives an alarm to indicate that the balance of the rotor is unqualified.
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| CN202211140980.6A CN115468705A (en) | 2022-09-20 | 2022-09-20 | Device and method for testing dynamic balance of motor rotor |
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| CN202211140980.6A CN115468705A (en) | 2022-09-20 | 2022-09-20 | Device and method for testing dynamic balance of motor rotor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116659750A (en) * | 2023-07-28 | 2023-08-29 | 常州市万禾精密冲压有限公司 | Motor core dynamic balance detection equipment |
| CN117968939A (en) * | 2024-03-29 | 2024-05-03 | 山东伊康清真肉类股份有限公司 | Dynamic balance testing device for meat grinder rotor |
| CN118150043A (en) * | 2024-05-09 | 2024-06-07 | 君海管业(山东)有限公司 | Rotation balance detection device for hose extruder rotor |
| CN118392214A (en) * | 2024-06-25 | 2024-07-26 | 东营市自然资源和规划局东营分局土地矿产发展服务中心 | Dynamic balance testing device and testing method for surveying instrument |
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2022
- 2022-09-20 CN CN202211140980.6A patent/CN115468705A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116659750A (en) * | 2023-07-28 | 2023-08-29 | 常州市万禾精密冲压有限公司 | Motor core dynamic balance detection equipment |
| CN116659750B (en) * | 2023-07-28 | 2023-10-10 | 常州市万禾精密冲压有限公司 | Motor core dynamic balance detection equipment |
| CN117968939A (en) * | 2024-03-29 | 2024-05-03 | 山东伊康清真肉类股份有限公司 | Dynamic balance testing device for meat grinder rotor |
| CN117968939B (en) * | 2024-03-29 | 2024-06-04 | 山东伊康清真肉类股份有限公司 | Dynamic balance testing device for meat grinder rotor |
| CN118150043A (en) * | 2024-05-09 | 2024-06-07 | 君海管业(山东)有限公司 | Rotation balance detection device for hose extruder rotor |
| CN118392214A (en) * | 2024-06-25 | 2024-07-26 | 东营市自然资源和规划局东营分局土地矿产发展服务中心 | Dynamic balance testing device and testing method for surveying instrument |
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