Permanent magnet motor rotor disassembling device with self-adaptive adjustment function

Abstract

The invention discloses a permanent magnet motor rotor disassembling device with a self-adaptive adjustment function, and belongs to the technical field of precise electromechanical equipment maintenance. The problems that in the existing permanent magnet motor disassembling process, the magnetic attraction out-of-control risk is likely to occur, and the disassembling efficiency is low are solved. The three-axis linkage ejection mechanism comprises a driving motor fixedly installed in the center of the disc, three studs arranged in the direction parallel to the center axis of the disc, three belt transmission assemblies and three tensioning mechanisms installed on the disc, and three kidney-shaped holes are evenly formed in the disc around the center axis of the disc in a radial shape. The three studs are correspondingly installed in the three kidney-shaped holes in a penetrating mode respectively, and the three studs are correspondingly connected with an output shaft of the driving motor through the three sets of belt transmission assemblies. Based on a dynamic moment balance mechanism, three studs and three sets of synchronous belt transmission assemblies are used for achieving moment dynamic balance among three-point supporting. The risk that magnetic attraction is out of control in the disassembling process of the permanent magnet motor is effectively avoided, and meanwhile the disassembling efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to a disassembly device for a permanent magnet motor rotor with an adaptive adjustment function, belonging to the technical field of precision electromechanical equipment maintenance. Background Art

[0002] With the rapid development of modern industrial technology, permanent magnet motors have been widely used in precision electromechanical equipment due to their high efficiency, high power density, and good control performance. However, when maintaining and overhauling permanent magnet motors, especially when disassembling key components such as the rotor and stator of permanent magnet motors, many technical problems are faced.

[0003] The rotor of a permanent magnet motor usually has high-performance permanent magnets embedded, such as neodymium iron boron magnets, with extremely high magnetic field intensity. This strong magnetic field has a very strong adsorption ability for surrounding ferromagnetic materials. During the disassembly process, when the distance between the stator and the rotor enters the range of the strong magnetic field, the non-linear magnetic field gradient generated by the neodymium iron boron magnet may cause a transient adsorption phenomenon. This phenomenon will not only hinder the smooth progress of the disassembly work, but may also cause serious damage to the surfaces of the stator and the rotor, affecting the performance and service life of the motor.

[0004] In addition, the traditional disassembly method of permanent magnet motors mainly relies on experienced operators to manually adjust the relative positions of the stator and the rotor. This method is not only time-consuming and laborious, but also has a low standardization level, and is prone to errors during the disassembly process due to human factors. In the maintenance of precision electromechanical equipment, this low-efficiency and high-risk disassembly method can no longer meet the requirements of modern industry for efficient, precise, and safe maintenance.

[0005] Therefore, there is an urgent need for a disassembly device for a permanent magnet motor rotor with an adaptive adjustment function to solve the risk of magnetic adsorption out of control during the disassembly process of permanent magnet motors and improve the efficiency of the disassembly process. Summary of the Invention

[0006] The present invention is to solve the problems of easy occurrence of magnetic adsorption out of control risk and low disassembly efficiency during the disassembly process of existing permanent magnet motors, and further provides a disassembly device for a permanent magnet motor rotor with an adaptive adjustment function.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: A permanent magnet motor rotor disassembly device with an adaptive adjustment function, comprising a disc and a three-axis linkage ejection mechanism mounted on the disc. The three-axis linkage ejection mechanism includes a driving motor fixedly installed at the center position of the disc, three studs arranged along the direction parallel to the central axis of the disc, three sets of belt transmission components, and three sets of tensioning mechanisms mounted on the disc. Three kidney-shaped holes are radially and evenly formed on the disc around its central axis. The three studs are respectively inserted into the three kidney-shaped holes, and each stud realizes the position adjustment in the kidney-shaped hole through a limit adjustment part. The three studs are respectively connected to the output shaft of the driving motor through three sets of belt transmission components, and the tightness of the transmission belts in the three sets of belt transmission components is adjusted through the three sets of tensioning mechanisms. A rotary movable ejector pin is fixedly connected to the bottom end of each stud.

[0008] Furthermore, a spirit level is installed on the disc.

[0009] Furthermore, a power output shaft is fixedly connected to the output shaft of the driving motor through a coupling, and the driving pulley in the belt transmission component is coaxially fixedly installed on the power output shaft.

[0010] Furthermore, a first flat position is machined at the top end of the power output shaft.

[0011] Furthermore, a second flat position is machined at the top end of each stud.

[0012] Furthermore, the tensioning mechanism includes a mounting seat, an angle adjustment bracket, and a tensioning pulley. The mounting seat is fixedly installed on the disc, and the tensioning pulley is rotatably installed on the mounting seat through the angle adjustment bracket.

[0013] Furthermore, the angle adjustment bracket includes a mounting rod arranged in an L shape and a support shaft. The support shaft is vertically fixedly installed on the mounting seat, one end of the mounting rod is rotatably connected to the top end of the support shaft, and the tensioning pulley is rotatably installed at the other end of the mounting rod.

[0014] Furthermore, the limit adjustment part includes a flange bearing, a bolt, and a nut. The flange bearing is inserted between the stud and the kidney-shaped hole. The flange end of the flange bearing abuts against the upper surface of the disc. The bolt is sequentially inserted through the flange end of the flange bearing and the disc from top to bottom and locked by the nut.

[0015] Furthermore, limit long holes are parallelly formed on both sides of the kidney-shaped hole on the disc, and the limit long holes are arranged corresponding to the bolt holes on the flange bearing up and down.

[0016] Furthermore, the rotary movable ejector pin is threadedly connected to the stud.

[0017] The present invention has the following effects compared with the prior art: During the screwing-in process of the three studs, once the load of one of the studs suddenly increases and the transmission belt reaches the slipping limit, automatic slipping occurs to redistribute the torque, prompting the offset fulcrum to reset, thereby achieving adaptive adjustment during the screwing-in process of the three studs, effectively avoiding the risk of magnetic attraction out of control during the disassembly of the permanent magnet motor, and greatly improving the disassembly efficiency at the same time.

[0018] A permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention is based on the principle of dynamic torque balance and uses three studs and three groups of synchronous belt transmission components to achieve dynamic torque balance between three-point supports. During the disassembly process, the three studs are screwed into the threaded holes provided on the permanent magnet motor rotor respectively. There is no need to damage the structure of the permanent magnet motor rotor or stator, nor will it cause damage to the structures at other positions of the rotor.

[0019] By setting the synchronous belt transmission components to maintain the dynamic balance of the ejection torques of the three studs, non-coplanar overturning torques during the disassembly process are avoided, thereby effectively avoiding the offset of the rotor axis and greatly improving the repeated assembly accuracy.

[0020] By fixedly connecting a rotary movable ejector pin to the bottom end of the stud and using the bearing inside the structure of the rotary movable ejector pin itself, after the stud is positioned by the rotary movable ejector pin, the stud can rotate around its own rotation center.

[0021] The permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention can not only be used for the disassembly of the permanent magnet motor rotor, but also for the installation of the rotor, and can also be used for the non-destructive disassembly and installation of various types of components, such as end covers or bearing sleeves, etc., with significant functional expandability and application potential. Brief Description of the Drawings

[0022] Figure 1 is the first three-dimensional structural schematic diagram of the permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention; Figure 2 is the second three-dimensional structural schematic diagram of the permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention; Figure 3 is the top view schematic diagram of the permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention; Figure 4 is the front view schematic diagram of the permanent magnet motor rotor disassembly device with an adaptive adjustment function according to the present invention; Figure 5 is Figure 4 the enlarged schematic diagram at P of Figure 6 is the three-dimensional structural schematic diagram of the tensioning mechanism.

[0023] In the figure: 1. Disc; 11. Waist-shaped hole; 12. Limit long hole; 2. Driving motor; 3. Stud; 31. Second flat position; 4. Belt drive assembly; 5. Tensioning mechanism; 51. Mounting seat; 52. Angle adjustment bracket; 53. Tensioning wheel; 6. Rotary movable center pin; 7. Limit adjustment member; 8. Power output shaft; 81. First flat position. Detailed implementation manner

[0024] Detailed implementation manner one: In combination with Figures 1 to 6 Describe this implementation manner, and clearly and completely describe the technical solutions in the implementation manners of the present invention. Obviously, the described implementation manners are only a part of the implementation manners of the present invention, rather than all the implementation manners. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that the descriptions of the directions such as "front", "rear", "left", "right", "inside", "outside", "left side", "right side", "upper part", "lower part", "top", "bottom" in the present invention are all defined based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the described structure must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In the description of the present invention, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] A permanent magnet motor rotor disassembly device with adaptive adjustment function comprises a disc 1 and a three-axis linkage ejection mechanism installed on the disc 1, wherein the three-axis linkage ejection mechanism comprises a drive motor 2 fixedly installed at the center position of the disc 1, three studs 3 arranged in a direction parallel to the central axis of the disc 1, three groups of belt transmission components 4 and three groups of tensioning mechanisms 5 installed on the disc 1, three waist-shaped holes 11 are evenly opened on the disc 1 in a radial shape around its central axis, the three studs 3 are respectively correspondingly installed in the three waist-shaped holes 11, and each stud 3 realizes its position adjustment in the waist-shaped hole 11 through a limit adjustment member 7, the three studs 3 are correspondingly connected to the output shaft of the drive motor 2 through three groups of belt transmission components 4, the tightness of the transmission belts in the three groups of belt transmission components 4 are correspondingly adjusted through three groups of tensioning mechanisms 5, and a rotary movable ejector 6 is fixed to the bottom end of each stud 3.

[0028] The operation process of dismantling the rotor of the permanent magnet motor with the adaptive adjustment function of the present invention is as follows: First, slide the three studs 3 along the length direction of the three waist-shaped holes 11 on the disc 1 to form an equilateral triangle support distribution that matches the threaded holes on the rotor; Then, change the tightness of the transmission belt through the adjustment mechanism to ensure that the slip threshold is appropriate; Align the three studs 3 with the three threaded holes on the rotor and screw the studs 3 in, while adjusting the screw-in length to keep the disc 1 level; Finally, the driving motor 2 is started to drive the three studs 3 to rotate simultaneously, or the three studs 3 are rotated manually in sequence to gradually push out the rotor.

[0029] During the screwing-in process of the three studs 3, once the load on one of the studs 3 increases suddenly, the transmission belt reaches the slip limit and automatically slips to achieve torque redistribution, prompting the offset fulcrum to reset, thereby achieving adaptive adjustment of the screwing-in process of the three studs 3, effectively avoiding the risk of magnetic attraction loss of control during the disassembly of the permanent magnet motor, and greatly improving the disassembly efficiency.

[0030] The present invention provides a permanent magnet motor rotor disassembly device with adaptive adjustment function. Based on the principle of dynamic torque balance, three studs 3 and three sets of synchronous belt transmission components 4 are used to realize the dynamic balance of torque between three-point supports. During the disassembly process, the corresponding threads of the three studs 3 are screwed into the threaded holes on the permanent magnet motor rotor. There is no need to destroy the permanent magnet motor rotor or stator structure, and no damage will be caused to the structure at other positions of the rotor.

[0031] The synchronous belt drive assembly 4 is provided to maintain the dynamic balance of the ejection torque of the three studs 3, thereby avoiding the occurrence of non-coplanar overturning torque during the disassembly process, thereby effectively avoiding the deviation of the rotor axis and greatly improving the accuracy of repeated assembly.

[0032] The drive motor 2 and the tensioning mechanism 5 form a power distribution module, which supports electric or manual dual-mode switching and is suitable for various scenarios such as batch maintenance of production lines and precision debugging in laboratories.

[0033] Each stud 3 is adjusted in position in the waist-shaped hole 11 by a limit adjustment member 7, and further adjusted in radial direction of the disk 1, so as to adapt to the position of the threaded hole on the rotor of the permanent magnet motor to be disassembled.

[0034] The three belt drive components 4 can be three driving pulleys arranged axially in sequence and correspondingly drive three driven pulleys through three synchronous belts; or one driving pulley can drive three driven pulleys through three synchronous belts. In this structural state, three belt grooves are provided on the driving pulley and the three driven pulleys along their own axes, thereby ensuring that the three synchronous belts are arranged horizontally.

[0035] By fixing the rotating movable ejector pin 6 at the bottom end of the stud 3 and utilizing the bearing inside the rotating movable ejector pin 6, the stud 3 can rotate around its own rotation center after being positioned by the rotating movable ejector pin 6. The specific structure of the rotating movable ejector pin 6 is prior art and will not be described in detail here.

[0036] The permanent magnet motor rotor disassembly device with adaptive adjustment function of the present invention can not only be used for disassembling the permanent magnet motor rotor, but also for installing the rotor. It can also be used for non-destructive disassembly and installation of various types of components, such as end covers or bearing sleeves, etc., and has significant functional expandability and application potential.

[0037] A level is installed on the disc 1. With such a design, by setting the level, it is easy to adjust the horizontal state of the disc 1, and then it is easy to adjust the screwing length of the three studs 3 into the threaded holes of the rotor, so as to avoid the situation of axis deviation during the disassembly process.

[0038] The output shaft of the driving motor 2 is fixedly connected with a power output shaft 8 through a coupling, and the driving pulley in the belt transmission assembly 4 is coaxially fixedly mounted on the power output shaft 8. In this design, by setting the power output shaft 8, it is convenient to install the belt transmission assembly 4.

[0039] The top end of the power output shaft 8 is processed with a first flattened portion 81. With such a design, by processing the first flattened portion 81 at the top end of the power output shaft 8, it is easy to manually rotate the power output shaft 8. When the drive motor 2 fails, the power output shaft 8 can be manually rotated with a tool to simultaneously control the three studs 3 to be screwed into the threaded holes of the rotor, which can be used for emergency operation.

[0040] A second flat portion 31 is machined at the top end of each stud 3. With such a design, by machining the second flat portion 31 at the top of the stud 3, it is convenient to perform a manual screwing-in operation on a single stud 3. Such a manual screwing-in operation is applicable to situations such as precise debugging in a laboratory where precise alignment between the stud 3 and the threaded hole on the rotor needs to be achieved before the driving motor 2 operates.

[0041] The tensioning mechanism 5 includes a mounting seat 51, an angle adjustment bracket 52, and a tensioning pulley 53. Among them, the mounting seat 51 is fixedly installed on the disc 1, and the tensioning pulley 53 is rotatably installed on the mounting seat 51 through the angle adjustment bracket 52. With such a design, the position of the tensioning pulley 53 in the horizontal direction is adjusted through the angle adjustment bracket 52 to adjust the contact position between the tensioning pulley 53 and the transmission belt, thereby adjusting the tightness of the transmission belt and ultimately adjusting the slip threshold of the transmission belt.

[0042] The angle adjustment bracket 52 includes a mounting rod arranged in an L shape and a support shaft. The support shaft is vertically fixedly installed on the mounting seat 51, one end of the mounting rod is rotatably connected to the top of the support shaft, and the tensioning pulley 53 is rotatably installed at the other end of the mounting rod. With such a design, since the driving pulleys of the three belt transmission assemblies 4 are coaxially arranged, the three transmission belts must be in horizontal planes at three different heights, and the heights of the tensioning pulleys 53 corresponding to each transmission belt must also be different. By selecting support shafts with different heights, each tensioning pulley 53 can be adapted to transmission belts at different heights.

[0043] The limit adjustment member 7 includes a flange bearing, a bolt, and a nut. Among them, the flange bearing is inserted between the stud 3 and the waist-shaped hole 11. The flange end of the flange bearing overlaps the upper surface of the disc 1. The bolt is sequentially inserted through the flange end of the flange bearing and the disc 1 from top to bottom and locked by the nut. With such a design, the specific structure of the flange bearing is prior art and will not be elaborated here. The nut is located below the disc 1 and is used to lock the flange end of the flange bearing and the disc 1. The position adjustment and locking of the flange bearing in the length direction of the waist-shaped hole 11 are achieved through the cooperation of the bolt and the nut, and then the position adjustment and fixation of the stud 3 in the length direction of the waist-shaped hole 11 are achieved. By setting the flange bearing, after its position is fixed in the length direction of the waist-shaped hole 11, the stud 3 inserted therein can still perform a rotating action.

[0044] Limit long holes 12 are parallelly opened on the disc 1 on both sides of the waist-shaped hole 11, and the limit long holes 12 are arranged corresponding to the bolt holes on the flange bearing up and down. With such a design, by setting the limit long holes 12, it is convenient for the bolt to pass through, and thus it is convenient to fix the flange bearing after its position is adjusted in the length direction of the waist-shaped hole 11.

[0045] The rotary movable center 6 and the stud 3 are threadedly connected. With such a design, the fixed end of the rotary movable center 6 is machined with an external thread, and the bottom of the stud 3 is machined with an internal thread, which facilitates the threaded connection between the rotary movable center 6 and the stud 3, and thus facilitates the installation and disassembly between the rotary movable center 6 and the stud 3.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A permanent magnet motor rotor disassembly device with an adaptive adjustment function, characterized in that: It includes a disc (1) and a three-axis linkage ejection mechanism mounted on the disc (1). The three-axis linkage ejection mechanism includes a driving motor (2) fixedly installed at the center of the disc (1), three stud bolts (3) arranged along the direction parallel to the central axis of the disc (1), three sets of belt transmission components (4), and three sets of tensioning mechanisms (5) installed on the disc (1). Three waist-shaped holes (11) are radially and evenly formed on the disc (1) around its central axis. The three stud bolts (3) are respectively inserted into the three waist-shaped holes (11), and each stud bolt (3) realizes the position adjustment in the waist-shaped hole (11) through a limit adjusting member (7). The three stud bolts (3) are correspondingly connected to the output shaft of the driving motor (2) through three sets of belt transmission components (4), and the belt tightness of the three sets of belt transmission components (4) is correspondingly adjusted through the three sets of tensioning mechanisms (5). A rotary movable ejector pin (6) is fixedly connected to the bottom end of each stud bolt (3).

2. The rotor disassembly device of a permanent magnet motor with an adaptive adjustment function according to claim 1, wherein: A spirit level is installed on the disc (1).

3. The permanent magnet motor rotor disassembly device with an adaptive adjustment function according to claim 1, characterized in that: A power output shaft (8) is fixedly connected to the output shaft of the driving motor (2) through a coupling, and the driving pulley in the belt transmission component (4) is coaxially fixedly installed on the power output shaft (8).

4. The disassembling device for the permanent magnet motor rotor with an adaptive adjustment function according to claim 3, characterized in that: A first flat position (81) is machined at the top end of the power output shaft (8).

5. The disassembling device for the permanent magnet motor rotor with an adaptive adjustment function according to claim 1, characterized in that: A second flat position (31) is machined at the top end of each stud bolt (3).

6. The disassembling device for the permanent magnet motor rotor with an adaptive adjustment function according to claim 1, characterized in that: The tensioning mechanism (5) includes a mounting seat (51), an angle adjusting bracket (52), and a tensioning pulley (53). The mounting seat (51) is fixedly installed on the disc (1), and the tensioning pulley (53) is rotatably installed on the mounting seat (51) through the angle adjusting bracket (52).

7. A permanent magnet motor rotor disassembly device with an adaptive adjustment function according to claim 6, characterized in that: The angle adjusting bracket (52) includes an L-shaped mounting rod and a support shaft. The support shaft is vertically fixedly installed on the mounting seat (51), one end of the mounting rod is rotatably connected to the top end of the support shaft, and the tensioning pulley (53) is rotatably installed at the other end of the mounting rod.

8. A disassembling device for a permanent magnet motor rotor with an adaptive adjustment function according to claim 1, characterized in that: The limit adjusting member (7) includes a flange bearing, a bolt, and a nut. The flange bearing is inserted between the stud bolt (3) and the waist-shaped hole (11), the flange end of the flange bearing is lapped on the upper surface of the disc (1), and the bolt is sequentially inserted through the flange end of the flange bearing and the disc (1) from top to bottom and locked by the nut.

9. The rotor disassembly device of a permanent magnet motor with an adaptive adjustment function according to claim 8, wherein: Limit long holes (12) are parallelly formed on the disc (1) on both sides of the waist-shaped hole (11), and the limit long holes (12) are arranged corresponding to the bolt holes on the flange bearing up and down.

10. A disassembling device for a permanent magnet motor rotor with an adaptive adjustment function according to claim 1, characterized in that: The rotary movable ejector pin (6) is threadedly connected to the stud bolt (3).

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