Permanent magnet synchronous motor with adjustable air gap structure

Abstract

The utility model relates to the field of permanent magnet synchronous motor discloses adjustable magnetic gap structure's permanent magnet synchronous motor, including the casing, the inside lateral wall fixedly connected with stator of casing, the inside lateral wall of stator is provided with the electromagnetic coil, the center of casing rotatably connected with rotor, the surface of rotor is provided with the gap adjusting mechanism, the gap adjusting mechanism includes the sliding sleeve, the outer camber surface of sliding sleeve is hinged with the articulated rod, the end away from sliding sleeve of articulated rod is hinged with the magnetic pole, the four corners of mounting panel all are provided with quick release assembly. In the utility model, through the gap adjusting mechanism, only need to loosen the positioning screw, remove the sliding sleeve, and the sliding sleeve can drive the magnetic pole and the guide rod in the rotor sliding groove accurate movement through the articulated rod, and this design makes the motor can according to different working scene and load condition, realizes the optimal matching of magnetic gap quickly, effectively promotes the motor efficiency, reduces the energy consumption, ensures the stable operation of equipment under various working conditions.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet synchronous motors, and more particularly to permanent magnet synchronous motors with adjustable magnetic gap structures. Background Technology

[0002] In the field of motor applications, permanent magnet synchronous motors are widely used in many key industries such as industrial production, new energy vehicles, and aerospace due to their advantages such as high efficiency and high power density.

[0003] As a key parameter of permanent magnet synchronous motors, the magnetic gap has a decisive impact on the performance of the motor. In actual operation, different working scenarios and load conditions have different requirements for the magnetic properties of the motor, and traditional permanent magnet synchronous motors with fixed magnetic gaps are difficult to meet diverse needs.

[0004] Currently, existing permanent magnet synchronous motors have some shortcomings: in terms of magnetic gap adjustment, the magnetic gap of most permanent magnet synchronous motors is fixed and cannot be flexibly adjusted according to actual working requirements, which seriously restricts the application and performance improvement of permanent magnet synchronous motors in a wider range of fields. To address this issue, a permanent magnet synchronous motor with an adjustable magnetic gap structure is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a permanent magnet synchronous motor with an adjustable magnetic gap structure, which aims to improve the problem that the magnetic gap of the existing permanent magnet synchronous motor is fixed and cannot be flexibly adjusted according to actual working needs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a permanent magnet synchronous motor with an adjustable magnetic gap structure, including a housing, a stator fixedly connected to the inner side wall of the housing, an electromagnetic coil provided on the inner side wall of the stator, a rotor rotatably connected to the center of the housing, and an adjustment mechanism provided on the surface of the rotor;

[0007] The adjustment mechanism includes a sliding sleeve, with a hinge rod hinged to the outer arc surface of the sliding sleeve. A magnetic pole is hinged to the end of the hinge rod away from the sliding sleeve. A guide rod is fixedly connected to the inner sidewall of the magnetic pole. An internal threaded groove is formed on the outer arc surface of the sliding sleeve. A positioning screw is threaded through and threaded to the inner wall of the sliding sleeve. A mounting plate is fixedly connected to the outer sidewall of the housing. Quick-release components are provided at the four corners of the mounting plate.

[0008] As a further description of the above technical solution:

[0009] The quick-release assembly includes a fixing rod, with a push block slidably connected to the inner wall of the fixing rod. A triangular block is in contact with the inner side wall of the push block. A connecting rod is fixedly connected to the end of the triangular block away from the push block. Two sets of connecting rods are provided, and the two sets of connecting rods are elastically connected by a return spring. An insert rod is fixedly connected to the outer wall of the connecting rod.

[0010] As a further description of the above technical solution:

[0011] The rotor is rotatably connected through and rotatably mounted at the center of the mounting plate.

[0012] As a further description of the above technical solution:

[0013] The rotor has a groove on its surface, and the guide rod is slidably connected to the inner wall of the rotor groove.

[0014] As a further description of the above technical solution:

[0015] The outer arc surface at the front end of the rotor is provided with an internal thread groove, and the bottom end of the positioning screw is threadedly connected to the inner wall of the internal thread groove at the front end of the rotor.

[0016] As a further description of the above technical solution:

[0017] The sliding sleeve is slidably connected to the surface of the rotor front end, and the hinge rod passes through and is slidably connected to the surface of the housing front end.

[0018] As a further description of the above technical solution:

[0019] The mounting plate has slots at all four corners, and the outer wall of the fixing rod contacts the inner wall of the slot.

[0020] As a further description of the above technical solution:

[0021] The connecting rod is slidably connected to the inner wall of the fixed rod, the insert rod passes through and is slidably connected to the inner side wall of the fixed rod, the side wall of the mounting plate slot is provided with a slot, and the outer wall of the insert rod is inserted into the inner wall of the slot.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by simply loosening the positioning screw and moving the sliding sleeve through the gap adjustment mechanism, the sliding sleeve can drive the magnetic pole and guide rod to move precisely within the rotor slide groove via the hinge rod, thereby flexibly adjusting the magnetic gap between the rotor and the stator. The design of multiple sets of guide rods sliding out of position ensures the stability of the adjustment process. After the adjustment is completed, tightening the positioning screw will fix the magnetic gap stably in the required position. This design enables the motor to quickly achieve the optimal matching of the magnetic gap according to different working scenarios and load conditions, effectively improving motor efficiency, reducing energy consumption, and ensuring stable operation of the equipment under various working conditions.

[0024] 2. In this utility model, during installation, first connect the fixing rod to the installation position with a thread, press the button to retract the insertion rod, and then easily fit the mounting plate onto the fixing rod. After releasing the button, the insertion rod automatically inserts into the groove of the mounting plate to complete the fixation. This process does not require complicated tools, is simple and quick to operate, and is especially suitable for special installation scenarios such as narrow spaces. It greatly saves installation time and labor costs, improves the installation efficiency of the motor, and provides convenience for the rapid deployment and maintenance of equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the permanent magnet synchronous motor with adjustable magnetic gap proposed in this utility model.

[0026] Figure 2 This is a partial cross-sectional view of the housing of the permanent magnet synchronous motor with adjustable magnetic gap structure proposed in this utility model.

[0027] Figure 3 This is a partial cross-sectional view of the rotor of the permanent magnet synchronous motor with the adjustable magnetic gap structure proposed in this utility model.

[0028] Figure 4 This is a partial cross-sectional view of the mounting plate and fixing rod of the permanent magnet synchronous motor with adjustable magnetic gap structure proposed in this utility model.

[0029] Figure 5 The adjustable magnetic gap structure of the permanent magnet synchronous motor proposed in this utility model Figure 4 Enlarged structural diagram of section A.

[0030] Legend:

[0031] 1. Housing; 2. Rotor; 3. Mounting plate; 4. Quick-release assembly; 41. Fixing rod; 42. Button; 43. Triangular block; 44. Connecting rod; 45. Insert rod; 46. Return spring; 5. Adjustment mechanism; 51. Sliding sleeve; 52. Positioning screw; 53. Hinge rod; 54. Magnetic pole; 55. Guide rod; 6. Stator; 7. Electromagnetic coil. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 3 An embodiment of this utility model is provided: a permanent magnet synchronous motor with an adjustable magnetic gap structure, including a housing 1, a stator 6 fixedly connected to the inner side wall of the housing 1, an electromagnetic coil 7 provided on the inner side wall of the stator 6, a rotor 2 rotatably connected to the center of the housing 1, and the rotor 2 passing through and rotatably connected to the center of the mounting plate 3. The housing 1, the stator 6, the electromagnetic coil 7, and the rotor 2 are all permanent magnet synchronous motor structures in the prior art. The surface of the rotor 2 is provided with an adjustment mechanism 5.

[0034] Reference Figure 2 and Figure 3 The gap adjustment mechanism 5 includes a sliding sleeve 51. A hinge rod 53 is hinged to the outer arc surface of the sliding sleeve 51. A magnetic pole 54 is hinged to the end of the hinge rod 53 away from the sliding sleeve 51. A guide rod 55 is fixedly connected to the inner side wall of the magnetic pole 54. A groove is formed on the surface of the rotor 2. The guide rod 55 is slidably connected to the inner wall of the groove of the rotor 2. When the sliding sleeve 51 moves, it pushes the hinge rod 53 to pull the corresponding magnetic pole 54, causing the guide rod 55 to move up and down on the inner wall of the rotor 2, thereby adjusting the magnetic gap between the rotor 2 and the stator 6. Multiple sets of guide rods 55 are provided, and the multiple sets of guide rods 55 are staggered and can only slide up and down on the inner wall of the rotor 2. The inner wall of the sliding sleeve 51 is threaded through and connected to a positioning screw 52. The outer arc surface of the front end of the rotor 2 is provided with an internal thread groove. The bottom end of the positioning screw 52 is threadedly connected to the inner wall of the internal thread groove at the front end of the rotor 2. The positioning screw 52 moves downward through the thread on the inner wall of the sliding sleeve 51, thereby locking with multiple sets of thread grooves on the surface of the rotor 2. This allows multiple positions of the magnetic gap to be stably fixed. The sliding sleeve 51 is slidably connected to the surface of the front end of the rotor 2. The hinge rod 53 is threaded through and slidably connected to the surface of the front end of the housing 1. The outer side wall of the housing 1 is fixedly connected to a mounting plate 3. Quick-release components 4 are provided at the four corners of the mounting plate 3.

[0035] Reference Figure 4 and Figure 5The quick-release assembly 4 includes a fixing rod 41. The mounting plate 3 has slots at each of its four corners. The outer wall of the fixing rod 41 contacts the inner wall of the slots. This contact allows the external threaded groove at the end of the fixing rod 41 to be threaded into the mounting plate 3 after installation. The mounting plate 3 can then be directly fitted onto the outside of the fixing rod 41. A push block 42 is slidably connected to the inner wall of the fixing rod 41. A triangular block 43 contacts the inner side wall of the push block 42. The inner wall of the push block 42 has a cavity. Pressing the push block 42 causes the inclined surfaces of the two sets of triangular blocks 43 to move closer together inside the push block 42. A connecting rod 44 is fixedly connected to the end of the triangular block 43 furthest from the push block 42. When the triangular block 43 moves after being squeezed by the inner wall of the push block 42, it will... The connecting rod 44 moves synchronously with it. There are two sets of connecting rods 44, which are elastically connected by a return spring 46. By setting the return spring 46 between the two sets of connecting rods 44, the position of the two sets of connecting rods 44 can be automatically reset after movement. The outer wall of the connecting rod 44 is fixedly connected to the insertion rod 45. The connecting rod 44 is slidably connected to the inner wall of the fixed rod 41. The insertion rod 45 passes through and is slidably connected to the inner side wall of the fixed rod 41. The side wall of the slot of the mounting plate 3 is provided with a slot. The outer wall of the insertion rod 45 is inserted into the inner wall of the slot. The insertion between the two allows the mounting plate 3 to be directly inserted into the surface of the fixed rod 41 and fixed by the insertion rod 45 when the fixed rod 41 is installed in the equipment position. This avoids the inconvenience of installing the fixing bolts due to the restriction of the housing 1 in some narrow spaces.

[0036] Working principle: When it is necessary to adjust the magnetic gap between rotor 2 and stator 6, first loosen the positioning screw 52 to disengage it from the internal thread groove at the front end of rotor 2. Then move the sliding sleeve 51, which slides on the front end surface of rotor 2, pushing the hinge rod 53. The movement of the hinge rod 53 pulls the corresponding magnetic pole 54, which drives the guide rod 55 to move up and down on the inner wall of the slide groove of rotor 2. Since the multiple sets of guide rods 55 are misaligned and can only slide up and down, the stability and accuracy of the movement of the magnetic pole 54 are ensured, thereby realizing the adjustment of the magnetic gap. After adjusting to the appropriate magnetic gap position, move the positioning screw 52 downward on the inner wall of the sliding sleeve 51 to lock it with the multiple sets of thread grooves on the surface of rotor 2, thus fixing the magnetic gap at that position.

[0037] First, connect the external threaded groove at the end of the fixing rod 41 to the installation position of the whole unit. Then, press the button 42. The inner wall of the button 42 presses the inclined surface of the triangular block 43, so that the two sets of triangular blocks 43 move closer to each other on the inner side of the button 42. At the same time, the connecting rod 44 moves synchronously. The two sets of connecting rods 44 move closer to each other and compress the return spring 46. The insertion rod 45 moves with the connecting rod 44 and retracts into the inner side of the fixing rod 41. Next, put the mounting plate 3 on the outer side of the fixing rod 41 and release the button 42. Under the action of the return spring 46, the two sets of connecting rods 44 automatically return to their original position. The insertion rod 45 moves outward and inserts into the slot of the side wall of the empty slot of the mounting plate 3, thereby fixing the mounting plate 3 on the fixing rod 41 and completing the installation of the motor.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A permanent magnet synchronous motor with an adjustable magnetic gap structure, comprising a housing (1), characterized in that: A stator (6) is fixedly connected to the inner side wall of the housing (1), and an electromagnetic coil (7) is provided on the inner side wall of the stator (6). A rotor (2) is rotatably connected to the center of the housing (1), and an adjustment mechanism (5) is provided on the surface of the rotor (2). The adjustment mechanism (5) includes a sliding sleeve (51), a hinge rod (53) is hinged to the outer arc surface of the sliding sleeve (51), a magnetic pole (54) is hinged to the end of the hinge rod (53) away from the sliding sleeve (51), a guide rod (55) is fixedly connected to the inner side wall of the magnetic pole (54), an internal thread groove is opened on the outer arc surface of the sliding sleeve (51), a positioning screw (52) is threaded through the inner wall of the sliding sleeve (51), and an installation plate (3) is fixedly connected to the outer side wall of the housing (1), and quick-release components (4) are provided at the four corners of the installation plate (3).

2. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 1, characterized in that: The quick-release assembly (4) includes a fixing rod (41), a push block (42) is slidably connected through the inner wall of the fixing rod (41), a triangular block (43) is in contact with the inner side wall of the push block (42), a connecting rod (44) is fixedly connected to the end of the triangular block (43) away from the push block (42), two sets of connecting rods (44) are provided, and the two sets of connecting rods (44) are elastically connected by a return spring (46), and an insert rod (45) is fixedly connected to the outer wall of the connecting rod (44).

3. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 1, characterized in that: The rotor (2) is rotatably connected through and rotatably connected to the center of the mounting plate (3).

4. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 1, characterized in that: The rotor (2) has a groove on its surface, and the guide rod (55) is slidably connected to the inner wall of the groove of the rotor (2).

5. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 1, characterized in that: The outer arc surface at the front end of the rotor (2) is provided with an internal thread groove, and the bottom end of the positioning screw (52) is threadedly connected to the inner wall of the internal thread groove at the front end of the rotor (2).

6. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 1, characterized in that: The sliding sleeve (51) is slidably connected to the surface of the front end of the rotor (2), and the hinge rod (53) passes through and is slidably connected to the surface of the front end of the housing (1).

7. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 2, characterized in that: The mounting plate (3) has slots at all four corners, and the outer wall of the fixing rod (41) is in contact with the inner wall of the slot.

8. The permanent magnet synchronous motor with adjustable magnetic gap structure according to claim 2, characterized in that: The connecting rod (44) is slidably connected to the inner wall of the fixed rod (41), the insert rod (45) passes through and is slidably connected to the inner side wall of the fixed rod (41), the side wall of the slot of the mounting plate (3) is provided with a slot, and the outer wall of the insert rod (45) is inserted into the inner wall of the slot.

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