Disc-type motor based on double output shafts

Abstract

The utility model relates to a disc type motor based on double output shafts and relates to the disc type motor field. The technical scheme comprises an output shaft, which is rotatably installed in a shell, extends to the outside of a first end cover and a second end cover at both ends respectively, and is connected with external loads at both ends; and a rotation protection cover, which is installed on the outer side surface of the first end cover, is provided with a rotary transformer on the inner side, and the rotary transformer is installed on the output shaft through a pressing sleeve. In this case, the rotary transformer is assembled in the rotation protection cover through the pressing sleeve, the bottleneck of limited internal space of the motor is broken through, the problem that the diameter of the double output shafts cannot be made large due to the installation and outlet limitation of the rotary transformer in the traditional design is effectively solved, the structural design of the large-size double output shafts of the disc type motor is successfully realized, the competitiveness of the disc type motor in multiple application fields is not only remarkably improved, but also the maintenance difficulty caused by the limited internal space is reduced due to the external rotary transformer, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of disc motor technology, and in particular to a disc motor based on dual output shafts. Background Technology

[0002] Existing dual-output-shaft disc motors have a relatively flat overall design, resulting in limited radial space. Most of this space must be allocated to the stator, the core of the motor, severely restricting the installation and layout of other components. Crucially, to achieve signal acquisition, a rotary transformer is typically installed at one end of the motor's output shaft. This transformer is directly mounted in the center hole of the end cover. The space requirements for the rotary transformer and the wiring layout further compress the design margin for the output shaft diameter, preventing it from being designed to be larger. Ultimately, this makes dual-output-shaft disc motors significantly less competitive in various applications where high shaft diameter is required.

[0003] Currently, there is no effective solution in the industry to overcome the limitations of internal space in the design of dual-output shaft disc motors. Existing technologies are always limited by factors such as stator space occupation, rotary transformer installation and wiring, making it difficult to achieve the design goal of larger dual-output shafts while ensuring the normal function of the motor. This technical bottleneck greatly restricts the expansion of application scenarios for dual-output shaft disc motors, and there is an urgent need for an innovative solution that can take into account both space utilization and large shaft diameter output requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a disc motor based on dual output shafts to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A disc motor based on dual output shafts includes a housing, with a first end cover and a second end cover respectively mounted on both sides of the housing. The disc motor based on dual output shafts further includes: An output shaft, rotatably mounted within the housing, extends at both ends to the outer sides of the first and second end covers, respectively, and both ends are connected to an external load; and A rotating protective cover is installed on the outer side of the first end cover, and a rotary transformer is provided on its inner side. The rotary transformer is installed on the output shaft through a pressure sleeve.

[0006] In some embodiments, the middle portion of the output shaft is rotatably mounted within the housing via a first bearing and a second bearing.

[0007] In some embodiments, a stator and a rotor are disposed inside the housing, the rotor is sleeved on the output shaft, the rotor is fixed to the housing, and an air gap exists between the stator and the rotor.

[0008] In some embodiments, a first oil seal adapted to the output shaft is provided at the center of the inner side of the rotating protective cover.

[0009] In some embodiments, a second oil seal adapted to the output shaft is provided at the inner center of the second end cap.

[0010] In some embodiments, the pressure sleeve and the output shaft are circumferentially positioned by a flat key, and the inner wall of the pressure sleeve and the outer wall of the output shaft are interference fit. The inner ring of the rotary transformer is welded to the outer ring of the pressure sleeve or locked by a set screw.

[0011] In some embodiments, the rotating protective cover and the first end cover are detachably connected by circumferentially distributed hexagonal bolts, and an elastic sealing ring is sandwiched between the inner side of the rotating protective cover and the outer side of the first end cover.

[0012] The beneficial effects of the technical solution provided by this utility model include at least the following: This technical solution includes an output shaft, rotatably mounted inside a housing, with its two ends extending to the outer sides of a first and second end cover, respectively, both connected to an external load; and a rotating protective cover mounted on the outer surface of the first end cover, with a rotary transformer housed inside. The rotary transformer is mounted on the output shaft via a pressure sleeve. In this configuration, the rotary transformer is fitted into the rotating protective cover using a pressure sleeve, overcoming the bottleneck of limited internal space in the motor. This effectively solves the problem in traditional designs where the diameter of the dual output shaft cannot be increased due to limitations in rotary transformer installation and wiring. It successfully achieves a large-size dual-output shaft structure design for the disc motor, significantly enhancing its competitiveness in multiple application areas. Furthermore, the external placement of the rotary transformer reduces maintenance difficulties caused by limited internal space and extends the motor's service life. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] Figure 1 A cross-sectional schematic diagram of a disc motor based on dual output shafts provided in an exemplary embodiment of the present invention is shown.

[0015] Figure 2A schematic diagram of the structure of a rotating protective cover for a disc motor based on a dual-output shaft provided in an exemplary embodiment of the present invention is shown.

[0016] Figure 3 This diagram illustrates the structure of a pressure sleeve for a disc motor based on a dual-output shaft, provided in an exemplary embodiment of the present invention.

[0017] In the picture: 1. Housing; 101. First end cover; 102. Second end cover; 2. Output shaft; 3. Rotating protective cover; 4. Rotary transformer; 5. Pressure sleeve; 6. First bearing; 7. Second bearing; 8. Stator; 9. Rotor; 10. First oil seal; 11. Second oil seal. Detailed Implementation

[0018] 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.

[0019] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This diagram shows a cross-sectional view of a disc motor based on a dual-output shaft, according to an exemplary embodiment of the present invention. Figure 2This illustration shows a schematic diagram of the structure of a rotating protective cover for a disc motor based on a dual-output shaft, provided in an exemplary embodiment of the present invention. Figure 3 The diagram shows a schematic of the structure of a pressure sleeve for a disc motor based on a dual-output shaft according to an exemplary embodiment of the present invention. The disc motor based on the dual-output shaft includes a housing 1, with a first end cover 101 and a second end cover 102 respectively installed on both sides of the housing 1. The disc motor based on the dual-output shaft also includes: an output shaft 2, the middle of which is rotatably installed inside the housing 1, with its two ends extending to the outside of the first end cover 101 and the second end cover 102 respectively, and both ends being connected to an external load; and a rotating protective cover 3, which is installed on the outer surface of the first end cover 101, with a rotary transformer 4 disposed on its inner side. The rotary transformer 4 is installed on the output shaft 2 through a pressure sleeve 5.

[0022] In this embodiment, the output shaft 2 is rotatably mounted in the housing 1 at the middle, and its two ends extend to the outside of the end cover and are connected to the external load, so that it can transmit power to both sides at the same time and realize the dual output function. The rotating protective cover 3 is installed on the outside of the first end cover 101, which can protect the inner rotary transformer 4 and prevent it from being affected by the external environment. The rotary transformer 4 is fixed to the output shaft 2 by the pressure sleeve 5, which can collect the speed and position signals of the output shaft 2. Since it is installed in the rotating protective cover 3 on the outside of the first end cover 101, it does not occupy the internal space of the motor, creating conditions for the design of a larger shaft diameter for the output shaft 2, thus taking into account both signal acquisition and large shaft diameter requirements.

[0023] For details, please refer to Figure 1 The middle part of the output shaft 2 is rotatably mounted in the housing 1 via the first bearing 6 and the second bearing 7.

[0024] In this embodiment, the first bearing 6 and the second bearing 7 form two-point positioning of the middle part of the output shaft 2 in the housing 1, which can limit the radial displacement of the output shaft 2 and ensure that it always maintains coaxiality during operation.

[0025] For more details, please refer to Figure 1 The housing 1 contains a stator 8 and a rotor 9. The rotor is mounted on the output shaft 2 and the rotor 9 is fixed to the housing 1. There is an air gap between the stator 8 and the rotor 9.

[0026] In this embodiment, the stator 8 and rotor 9 work together to generate electromagnetic torque, driving the output shaft 2 to rotate. The air gap between the stator 8 and rotor 9 is used for the efficient transfer of electromagnetic energy and also avoids friction between the two during operation, ensuring stable operation of the motor.

[0027] Specifically, please refer to Figure 1 The inner center of the rotating protective cover 3 is provided with a first oil seal 10 that is adapted to the output shaft 2.

[0028] For more details, please refer to Figure 1 The inner center of the second end cover 102 is provided with a second oil seal 11 that is adapted to the output shaft 2.

[0029] In this embodiment, the first oil seal 10 can seal the gap between the rotating protective cover 3 and the output shaft 2, preventing external dust and impurities from entering the rotating protective cover 3 and damaging the rotary transformer 4; the second oil seal 11 can prevent external contaminants from entering the interior of the housing 1, ensuring the stable operation of components such as the stator 8 and rotor 9.

[0030] In an optional embodiment, the pressure sleeve 5 and the output shaft 2 are circumferentially positioned by a flat key, and the inner wall of the pressure sleeve 5 and the outer wall of the output shaft 2 are interference fit. The inner ring of the rotary transformer 4 is welded to the outer ring of the pressure sleeve 5 or locked by a set screw.

[0031] In an optional embodiment, the rotating protective cover 3 and the first end cover 101 are detachably connected by circumferentially distributed hexagonal bolts, and an elastic sealing ring is sandwiched between the inner side of the rotating protective cover 3 and the outer side of the first end cover 101.

[0032] In this embodiment, the rotating protective cover 3 and the first end cover 101 are detachably connected by circumferentially distributed hexagonal bolts, which allows for easy disassembly and assembly, facilitating subsequent maintenance of the inner rotary transformer 4. The elastic sealing ring between the two can seal the gap, preventing external dust and impurities from entering the rotating protective cover 3 and avoiding contamination of the rotary transformer 4.

[0033] Next, the working principle of a disc motor based on a dual output shaft involved in the embodiments of this utility model will be explained: When the disc motor is working, the stator 8 inside the housing 1 and the rotor 9 fixed to the housing first cooperate to generate electromagnetic torque to drive the output shaft 2 to rotate; both ends of the output shaft 2 extend to the outside of the end cover to connect to the external load, realizing dual output power transmission; at the same time, the rotary transformer 4 is fixed to the output shaft 2 through the pressure sleeve 5, and synchronously collects the speed and position signals of the output shaft 2; by setting the external rotary transformer 4, the pain point of the dual output shaft diameter being limited by the installation and wiring requirements of the rotary transformer 4 in the traditional design is specifically solved.

[0034] In summary, this technical solution includes an output shaft, rotatably mounted inside the housing, with its two ends extending to the outer sides of the first and second end covers, respectively, both connected to an external load; and a rotating protective cover mounted on the outer surface of the first end cover, with a rotary transformer housed inside. The rotary transformer is mounted on the output shaft via a pressure sleeve. In this configuration, the rotary transformer is assembled within the rotating protective cover using a pressure sleeve, overcoming the bottleneck of limited internal space in the motor. This effectively solves the problem in traditional designs where the diameter of the dual output shaft cannot be increased due to limitations in rotary transformer installation and wiring. It successfully achieves a large-size dual-output shaft structure design for the disc motor, significantly enhancing its competitiveness in multiple application areas. Furthermore, the external placement of the rotary transformer reduces maintenance difficulties caused by limited internal space and extends the motor's service life.

[0035] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A disc motor based on dual output shafts, comprising a housing (1), wherein a first end cover (101) and a second end cover (102) are respectively installed on both sides of the housing (1), characterized in that, The disc motor based on dual output shafts also includes: An output shaft (2), the middle of which is rotatably mounted inside the housing (1), extends at both ends to the outer sides of the first end cover (101) and the second end cover (102), respectively, and both ends are connected to an external load; and A rotating protective cover (3) is installed on the outer side of the first end cover (101), and a rotary transformer (4) is provided on its inner side. The rotary transformer (4) is installed on the output shaft (2) through a pressure sleeve (5).

2. The disc motor based on dual output shafts according to claim 1, characterized in that, The middle part of the output shaft (2) is rotatably mounted in the housing (1) via a first bearing (6) and a second bearing (7).

3. The disc motor based on dual output shafts according to claim 1, characterized in that, The housing (1) is provided with a stator (8) and a rotor (9). The rotor is sleeved on the output shaft (2) and the rotor (9) is fixed on the housing (1). There is an air gap between the stator (8) and the rotor (9).

4. The disc motor based on dual output shafts according to claim 1, characterized in that, The inner center of the rotating protective cover (3) is provided with a first oil seal (10) that is adapted to the output shaft (2).

5. The disc motor based on dual output shafts according to claim 1, characterized in that, The inner center of the second end cap (102) is provided with a second oil seal (11) that is adapted to the output shaft (2).

6. The disc motor based on dual output shafts according to claim 1, characterized in that, The pressure sleeve (5) and the output shaft (2) are circumferentially positioned by a flat key, and the inner wall of the pressure sleeve (5) and the outer wall of the output shaft (2) are interference fit. The inner ring of the rotary transformer (4) is welded and fixed to the outer ring of the pressure sleeve (5) or locked by a set screw.

7. The disc motor based on dual output shafts according to claim 1, characterized in that, The rotating protective cover (3) is detachably connected to the first end cover (101) by circumferentially distributed hexagonal bolts, and an elastic sealing ring is sandwiched between the inner side of the rotating protective cover (3) and the outer side of the first end cover (101).

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