Stator fixing structure of multifunctional permanent magnet speed regulation all-in-one machine

Abstract

The utility model relates to the technical field of permanent magnet speed regulation, in particular to a stator fixing structure of a multifunctional permanent magnet speed regulation all-in-one machine, which comprises a machine base, a speed regulation winding stator iron core, a motor permanent magnet rotor iron core, a motor winding rotor iron core and a machine base fixing plate, and the speed regulation winding stator iron core consists of a stator punching sheet and a pressing plate. According to the stator fixing structure of the multifunctional permanent magnet speed regulation all-in-one machine, the design of the speed regulation winding stator iron core which is bilaterally symmetrical and vertically hollowed is adopted, so that the center height problem of the multifunctional permanent magnet speed regulation all-in-one machine is solved, and the multifunctional permanent magnet speed regulation all-in-one machine can be seamlessly replaced with a motor with the same power and the same center height; the speed regulation winding stator iron core adopts a two-section type structural design and can be conveniently disassembled from an outer side square hole, so that the later use cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet speed regulation, in particular to a stator fixing structure of a multifunctional permanent magnet speed regulation integrated machine. Background Art

[0002] Speed ​​regulation is recognized as one of the best ways to achieve energy saving in motors. There are three main ways to regulate the speed of motors: electromagnetic speed regulation, cascade speed regulation, and variable frequency speed regulation. Among them, electromagnetic speed regulation has low efficiency, large slip power loss, large axial length, and large space occupation, which makes installation inconvenient. Cascade speed regulation does not have low voltage ride-through capability. That is, when the power grid voltage drops (temporary voltage drop), the motor increases the current of the stator to maintain the output torque unchanged, resulting in a large induced current on the rotor side. Since the inverter of the slip power conversion device is directly connected in series to the rotor circuit, the slip power conversion device is easily burned due to excessive current, resulting in motor failure and shutdown. The inverter, a key device for variable frequency speed regulation, has a large capacity, complex technology, high cost, high requirements for the installation environment, and difficult maintenance and repair.

[0003] In view of the various speed regulating operation modes of motors in the prior art, a speed regulating motor with high efficiency, small size and the same center height as the existing standard motor is needed to replace the ordinary motors with low energy efficiency currently on the market.

[0004] Chinese patent CN 114977916 A discloses a speed regulating motor, comprising: a mounting housing, which is located inside a casing and is rotatably arranged relative to the casing and the motor shaft; an electric part, which comprises an inner rotor and an armature winding, wherein the inner rotor is fixedly sleeved on the motor shaft, the armature winding is fixed on the inner side of the mounting housing, and the armature winding is powered by a collector ring carbon brush assembly; a power generation part, which comprises a permanent magnet rotor and a stator winding, wherein the permanent magnet rotor is fixed on the outer side of the mounting housing, and the stator winding is fixed on the inner side of the casing; and a control part, which is electrically connected to the stator winding, and the control part is suitable for adjusting the output speed of the motor by controlling the current in the stator winding.

[0005] The above structure consists of two sets of magnetic coupling pairs, which will inevitably increase the center height of the traditional standard motor, which is very unfavorable for the transformation of the old system motor and requires the modification of the foundation. Therefore, it is very necessary to reduce the center height of this dual-rotor motor. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the conventional speed regulating structure is composed of two sets of magnetic coupling pairs, which inevitably increases the center height of the conventional standard motor, which is very unfavorable for the transformation of the old system motor and requires the modification of the foundation. Therefore, it is very necessary to reduce the center height of the dual-rotor motor.

[0007] The utility model adopts the following technical solution to solve the technical problem: a multifunctional permanent magnet speed regulating integrated machine stator fixing structure, comprising a machine base, a speed regulating winding stator core, a speed regulating permanent magnet rotor core, a motor permanent magnet rotor core, a motor winding rotor core and a machine base fixing plate, wherein the speed regulating winding stator core is composed of a stator punching sheet and a pressure plate, the inner circle of the machine base fixing plate is processed with left-right symmetrical dove tail salient poles, and the outer circle of the speed regulating winding stator core is processed with dove tail grooves matching the dove tail salient poles.

[0008] The pressing plate is inserted into the outer side of the protruding section of the stator punching sheet and is fixed to the stator punching sheet by welding.

[0009] The speed regulating winding stator core is axially sleeved on the dove tail salient pole along the machine base fixing plate through the dove tail groove and fixedly assembled with the machine base fixing plate.

[0010] The base is symmetrically provided with square holes for installing the stator core of the speed regulating winding on both sides, and the base fixing plate is fixedly installed inside the sinking opening outside the square hole by bolts.

[0011] The speed regulating permanent magnet rotor core and the motor permanent magnet rotor core are back-to-back to form a permanent magnet rotor, and are sleeved on the outside of the motor winding rotor core.

[0012] Both ends of the outer side surface of the dove tail salient pole and both sides of the inner locking end of the dove tail groove have flat surfaces.

[0013] The beneficial effects of the utility model are:

[0014] (1) The stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine of the utility model solves the problem of the center height of the multifunctional permanent magnet speed regulating integrated machine by adopting a left-right symmetrical and top-bottom hollowed-out speed regulating winding stator core design, so that it can be seamlessly replaced with motors of the same power and center height;

[0015] (2) The stator core of the speed regulating winding adopts a two-petal structure design, which can be easily disassembled from the outer square hole, greatly reducing the subsequent use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model in the state of embodiment 1.

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in the state of embodiment 2.

[0019] Figure 3 yes Figure 2 A partial enlarged view of position A in the middle. DETAILED DESCRIPTION

[0020] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Figure 1 , Figure 2 and Figure 3 A multifunctional permanent magnet speed regulating integrated machine stator fixing structure is shown, comprising a machine base 1, a speed regulating winding stator core 2, a speed regulating permanent magnet rotor core 10, a motor permanent magnet rotor core 3, a motor winding rotor core 4 and a machine base fixing plate 5. The speed regulating winding stator core 2 is composed of a stator punching sheet 21 and a pressure plate 22. The inner circle of the machine base fixing plate 5 is processed with left-right symmetrical dove tail salient poles 6, and the outer circle of the speed regulating winding stator core 2 is processed with a dove tail groove 7 matching the dove tail salient pole 6.

[0023] For the purpose of fitting, the pressure plate 22 is inserted into the outer side of the protruding section of the stator punching sheet 21 and fixed to the stator punching sheet 21 by welding.

[0024] In order to cooperate with assembly and fixation, the speed regulating winding stator core 2 is axially sleeved on the dove tail salient pole 6 along the machine base fixing plate 5 through the dove tail groove 7 and fixedly assembled with the machine base fixing plate 5.

[0025] Embodiment 1: No square holes 8 for installing the speed regulating winding stator core 2 are provided on both sides of the base 1, and the dove-tail salient poles 6 are directly arranged on the inner walls of both sides of the base 1;

[0026] Embodiment 2: In order to facilitate lateral loading and unloading, square holes 8 for installing the speed regulating winding stator core 2 are symmetrically opened on both sides of the base 1, and the sealing cover plate outside the base fixing plate 5 is fixedly installed inside the outer sinking opening of the square hole 8 by bolts.

[0027] In order to facilitate installation, the speed regulating permanent magnet rotor core 10 and the motor permanent magnet rotor core 3 are back-to-back to form a permanent magnet rotor, and are sleeved on the outside of the motor winding rotor core 4.

[0028] In order to facilitate assembly and reduce processing costs, both ends of the outer side surface of the dove tail salient pole 6 and both sides of the inner locking end of the dove tail groove 7 have flat surfaces 9.

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multifunctional permanent magnet speed regulating integrated machine stator fixing structure, comprising a machine base (1), a speed regulating winding stator core (2), a speed regulating permanent magnet rotor core (10), a motor permanent magnet rotor core (3), a motor winding rotor core (4) and a machine base fixing plate (5), wherein: The speed regulating winding stator core (2) is composed of a stator punching sheet (21) and a pressure plate (22), the inner circle of the base fixing plate (5) is processed with a left-right symmetrical dove tail salient pole (6), and the outer circle of the speed regulating winding stator core (2) is processed with a dove tail groove (7) matching the dove tail salient pole (6).

2. According to claim 1, the stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine is characterized in that: The pressure plate (22) is inserted into the outer side of the protruding section of the stator punching sheet (21) and is welded and fixed to the stator punching sheet (21).

3. The stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine according to claim 1 is characterized in that: The speed regulating winding stator core (2) is axially sleeved on the dove tail salient pole (6) along the machine base fixing plate (5) through the dove tail groove (7) and is fixedly assembled with the machine base fixing plate (5).

4. The stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine according to claim 1 is characterized in that: The base (1) is symmetrically provided with square holes (8) for installing the speed regulating winding stator core (2), and the base fixing plate (5) is fixedly installed inside the sunken opening outside the square hole (8) by means of bolts.

5. The stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine according to claim 1 is characterized in that: The speed regulating permanent magnet rotor core (10) and the motor permanent magnet rotor core (3) are back-to-back formed into a permanent magnet rotor, and are sleeved on the outside of the motor winding rotor core (4).

6. The stator fixing structure of a multifunctional permanent magnet speed regulating integrated machine according to claim 1 is characterized in that: Both ends of the outer side surface of the dove-tail salient pole (6) and both sides of the inner locking end of the dove-tail groove (7) are provided with flat surfaces (9).

Images