Stator hot jacket apparatus

Abstract

The present disclosure relates to a stator hot fitting device for fitting a stator with a housing to obtain an assembly; the stator hot fitting device comprises a machine table, a machine frame, a stator positioning device, a housing bearing device, a heating device, a housing positioning and lifting device, and a cooling device; the machine frame is arranged on the machine table; the stator positioning device is arranged on the machine table and used for positioning the stator; the housing bearing device is arranged on the machine table and used for bearing the housing; the heating device is arranged on the machine table and used for heating the housing borne by the housing bearing device; the housing positioning and lifting device is arranged on the machine frame in a liftable manner and used for lifting and positioning the heated housing; the cooling device is arranged on the housing positioning and lifting device and used for cooling the assembly; the machine frame is arranged on the machine table in a translatable manner, or the stator positioning device and the housing bearing device are respectively arranged on the machine table in a translatable manner, so that the housing positioning and lifting device can switch between two position states of being above the stator positioning device and being above the housing bearing device.

Description

Technical Field

[0001] This disclosure relates to the field of electric drive manufacturing technology for new energy vehicles, and in particular to a stator heat-shrinking device. Background Technology

[0002] Stator heat fitting is one of the core processes in electric drive manufacturing, and the quality of the heat fitting determines the manufacturing quality of the electric drive. One existing stator heat fitting solution uses a design with the stator below and the housing above. The process involves lowering the housing to fit it with the stator, and then transferring the assembled component to a cooling device using a robot. However, the robot's handling and transfer to the cooling device is time-consuming, causing the component to cool slowly. This slow cooling, especially in a stator-below-housing-above-housing fitting process, can cause relative retraction between the assembled stator and housing, resulting in poor assembly quality, reduced stator yield, and lower production efficiency. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a stator heat fitting device.

[0004] According to a first aspect of the present disclosure, a stator heat fitting device is provided for heat fitting a stator and a housing to obtain an assembly; wherein the stator heat fitting device includes a machine base, a frame, a stator positioning device, a housing support device, a heating device, a housing positioning lifting device, and a cooling device; the frame is disposed on the machine base; the stator positioning device is disposed on the machine base for positioning the stator; the housing support device is disposed on the machine base for supporting the housing; the heating device is disposed on the machine base for heating the housing supported by the housing support device; the housing positioning lifting device is movably disposed on the frame for extracting and positioning the heated housing and driving it to move up and down; the cooling device is disposed on the housing positioning lifting device for cooling the assembly; wherein the frame is translatably disposed on the machine base, or the stator positioning device and the housing support device are respectively translatably disposed on the machine base, so that the housing positioning lifting device can switch between two position states: one above the stator positioning device and the other above the housing support device.

[0005] In some exemplary embodiments of this disclosure, the cooling device includes an air source and an air duct; the air source is disposed above the housing positioning and lifting device; one end of the air duct is connected to the air source, and the other end is provided with an air outlet; wherein, the airflow output by the air source blows onto the assembly through the air outlet.

[0006] In some exemplary embodiments of this disclosure, the air source is provided with a cooling mechanism for cooling the airflow output by the air source.

[0007] In some exemplary embodiments of this disclosure, the air duct is provided with a filter for filtering impurities in the airflow.

[0008] In some exemplary embodiments of this disclosure, the frame is fixedly mounted on the machine base, and the stator positioning device and the housing support device are respectively translatably mounted on the machine base; wherein, the machine base has a target position located directly below the housing positioning and lifting device, the heating device is mounted at the target position, and the movement paths of the stator positioning device and the housing support device respectively pass through the target position.

[0009] In some exemplary embodiments of this disclosure, the stator positioning device and the housing support device are arranged at intervals along a first direction, and the movement paths of the stator positioning device and the housing support device are respectively straight paths extending along the first direction.

[0010] In some exemplary embodiments of this disclosure, the machine tool is provided with a first track and a second track extending along the first direction, the housing support device is slidably disposed on the first track and driven by a first translation drive mechanism, and the stator positioning device is slidably disposed on the second track and driven by a second translation drive mechanism; wherein, the first track has a first end located at the target position, the second track has a second end located at the target position, and the first end and the second end are arranged overlapping in the first direction.

[0011] In some exemplary embodiments of this disclosure, the stator positioning device includes a base and a support; the base is disposed on the machine tool; the support is used to support the stator, and the support is movably disposed on the base via a stator floating mechanism, the stator floating mechanism having a floating degree of freedom in the horizontal direction.

[0012] In some exemplary embodiments of this disclosure, the stator positioning device is translatably disposed on the machine tool, and the movement path is a straight path extending along a first direction; wherein, the stator floating mechanism includes a first floating slide rail and a second floating slide rail, one of the first floating slide rail and the second floating slide rail extending along the first direction, and the other extending along a second direction perpendicular to the first direction; the first floating slide rail is disposed on the base, the second floating slide rail is slidably disposed on the first floating slide rail, and the support seat is slidably disposed on the second floating slide rail.

[0013] In some exemplary embodiments of this disclosure, the stator positioning device further includes a stator plane floating centering mechanism; the stator plane floating centering mechanism is disposed on the base and can switch between a first state and a second state; in the first state, the stator plane floating centering mechanism locks the relative position of the support seat and the base; in the second state, the stator plane floating centering mechanism releases the lock so that the support seat can float relative to the base via the stator floating mechanism.

[0014] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The stator heat-shrinking equipment proposed in this disclosure adopts a sleeve scheme with the shell on top and the stator on the bottom. Compared with the sleeve scheme with the stator on top and the shell on the bottom, this improves the axial sealing effect of the stator's sealing oil ring. Based on this, this disclosure integrates a cooling device into the shell positioning and lifting device, that is, it integrates a cooling device into the stator heat-shrinking equipment. Specifically, this achieves the function of synchronously lifting and lowering the cooling device and the shell to directly cool the assembled components. This enables rapid cooling of the components, avoids relative retraction displacement between the assembled stator and the shell, optimizes the assembly effect of the stator heat-shrinking, improves the yield of stator products, and increases production efficiency.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0017] Figure 1 This is a perspective view of a stator heat-shrinking device illustrated according to some exemplary embodiments of the present disclosure;

[0018] Figure 2 yes Figure 1 The front view of the stator heat-shrinking device is shown.

[0019] Figure 3 yes Figure 1 A magnified view of a portion of the image;

[0020] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the stator positioning device of the stator heat fitting equipment is shown;

[0021] Figure 5 yes Figure 4 A schematic cross-sectional view of the stator positioning device is shown.

[0022] Figure 6 yes Figure 1 A cross-sectional schematic diagram of the housing positioning and lifting device is shown.

[0023] Explanation of reference numerals in the attached figures:

[0024] 110. Machine tool;

[0025] 1101. Rack;

[0026] 1102. Receiving tank;

[0027] 111. First track;

[0028] 1111. First end;

[0029] 112. Second track;

[0030] 1121. Second end;

[0031] 120. Stator positioning device;

[0032] 121. Base;

[0033] 122. Support base;

[0034] 123. Floating mechanism;

[0035] 1231. First floating slide rail;

[0036] 1232. Second floating slide rail;

[0037] 124. Stator planar floating centering mechanism;

[0038] 125. Stator angular floating centering mechanism;

[0039] 130. Shell bearing device;

[0040] 150. Housing positioning and lifting device;

[0041] 151. Bearing housing;

[0042] 152. Housing centering mechanism;

[0043] 160. Cooling device;

[0044] 161. Air duct. Detailed Implementation

[0045] Some embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0046] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0047] See Figure 1 The illustration shows a three-dimensional schematic diagram of a stator heat-shrinking device. In this exemplary embodiment, the stator heat-shrinking device proposed in this disclosure is described using the stator heat-shrinking process in the electric drive manufacturing process as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this disclosure to other types of stator heat-shrinking processes, and these changes are still within the scope of the principles of the stator heat-shrinking device proposed in this disclosure.

[0048] like Figure 1 As shown, in one embodiment of this disclosure, the stator heat-shrinking device includes a machine base 110, a frame 1101, a stator positioning device 120, a housing support device 130, a heating device, a housing positioning and lifting device 150, and a cooling device 160. (See also...) Figures 2 to 6 , Figure 2 The image shows a representative front view of the stator heat-shrinking device; Figure 3 China representatively shows Figure 1 A magnified view of a portion of the image; Figure 4 A three-dimensional schematic diagram of the stator positioning device 120 of the stator heat fitting equipment is shown in the figure. Figure 5 A representative cross-sectional schematic diagram of the stator positioning device 120 is shown in the figure; Figure 6 China representatively shows Figure 1 The diagram shows a cross-sectional view of the housing positioning and lifting device 150. The structure, connection method, and functional relationship of the main components of the stator heat-shrinking device proposed in this disclosure will be described in detail below with reference to the above-mentioned figures.

[0049] like Figures 1 to 3As shown, in one embodiment of this disclosure, the frame 1101 is mounted on the machine base 110. The stator positioning device 120 is mounted on the machine base 110 and is used to position the stator. The housing support device 130 is mounted on the machine base 110 and is used to support the housing. The heating device is mounted on the machine base 110 and is used to heat the housing supported by the housing support device 130. The housing positioning lifting device 150 is vertically mounted on the frame 1101 and is used to lift and position the heated housing and drive it up and down. The cooling device 160 is mounted on the housing positioning lifting device 150 and is used to cool the assembly of the housing and stator after assembly. Furthermore, the stator positioning device 120 and the housing support device 130 are respectively translatably mounted on the machine base 110 so that the housing positioning lifting device 150 can switch between two positions: above the stator positioning device 120 and above the housing support device 130. Through the above structural design, the stator heat-shrinking equipment proposed in this disclosure adopts a sleeve-fitting scheme with the shell on top and the stator below. Compared with the sleeve-fitting scheme with the stator on top and the shell below, this improves the axial sealing effect of the stator's sealing oil ring. Based on this, this disclosure integrates the cooling device 160 into the shell positioning and lifting device 150, i.e., the cooling device 160 is integrated into the stator heat-shrinking equipment. Specifically, the cooling device 160 and the shell are raised and lowered synchronously to directly cool the assembled components. This achieves rapid cooling of the components, avoids relative retraction displacement between the assembled stator and the shell, optimizes the assembly effect of the stator heat-shrinking, improves the yield of stator products, and increases production efficiency. Furthermore, by integrating the cooling device 160, this disclosure can also meet the design requirements of high cycle time, high quality, high automation, and high flexibility in electric drive manufacturing processes, while solving the problem of large floor space required by additional independent cooling equipment.

[0050] It should be noted that in some other embodiments of this disclosure, in order to achieve the switching between the two position states mentioned above, the frame 1101 can also be movably mounted on the machine base 110, that is, the housing positioning lifting device 150 is moved by the frame 1101. In this case, the stator positioning device 120 and the housing bearing device 130 do not need to be movably mounted on the machine base 110.

[0051] In one embodiment of this disclosure, the cooling device 160 may include an air source and an air duct 161 (see [reference]). Figure 6The air source is positioned above the housing positioning and lifting device 150. One end of the air duct 161 is connected to the air source, and the other end of the air duct 161 is provided with an air outlet. Accordingly, the airflow output by the air source can blow onto the assembly through the air outlet. Through the above structural design, since this disclosure adopts a fitting scheme with the housing on top and the stator below, this disclosure can avoid the problem of interference affecting the fitting action caused by the air source being positioned below the housing positioning and lifting device 150.

[0052] Based on the structural design of the cooling device 160 including an air source, in one embodiment of this disclosure, the air source may be equipped with a refrigeration mechanism. This refrigeration mechanism is used to cool the airflow output by the air source. The refrigeration mechanism includes, for example, a heat exchanger, a compressor, and related pipelines. Through the above structural design, this disclosure enables the cooling device 160 to blow low-temperature airflow onto the assembly, thereby achieving a more rapid cooling function and further optimizing the assembly effect of the stator heat jacket.

[0053] Based on the structural design of the cooling device 160 including the air duct 161, in one embodiment of this disclosure, the air duct 161 may be provided with a filter, which can be used to filter impurities in the airflow, such as dust, foreign objects, and moisture. Through the above structural design, this disclosure can improve the purity of the cooling airflow blowing onto the assembly and prevent impurities in the airflow from contaminating the assembly.

[0054] like Figure 1 and Figure 2 As shown, in one embodiment of this disclosure, a frame 1101 is fixedly mounted on a machine base 110, and a stator positioning device 120 and a housing support device 130 are respectively movably mounted on the machine base 110. Based on this, the machine base 110 has a target position located directly below the housing positioning lifting device 150. A heating device can be positioned at this target position, and the movement paths of the stator positioning device 120 and the housing support device 130 respectively pass through the target position of the machine base 110. Accordingly, when the housing support device 130 carries the housing and moves to the target position, the heating device can heat the housing. Furthermore, after the housing positioning lifting device 150 removes the heated housing and the housing support device 130 moves out of the target position, when the stator positioning device 120 carries the stator and moves to the target position, the stator is located directly below the housing. The descent of the housing positioning lifting device 150 then allows for the fitting and assembly of the housing and the stator.

[0055] like Figure 1 and Figure 2As shown, in one embodiment of this disclosure, the heating device can be disposed inside the machine tool 110. For example, the machine tool 110 may be provided with a receiving groove 1102 at the target position, and the opening of the receiving groove 1102 is open onto the table surface of the machine tool 110 used to house the stator positioning device 120 and the housing support device 130. Based on this, the heating device is disposed in the receiving groove 1102 and can be exposed or extended through the opening to heat the housing.

[0056] Furthermore, based on the structural design of the heating device being installed in the receiving groove 1102 of the machine tool 110, in one embodiment of this disclosure, the heating device can be installed in a liftable manner. For example, the heating device can be installed in the receiving groove 1102 via a lifting mechanism. In this case, when the housing needs to be heated, the heating device can be raised using the lifting mechanism to expose or extend out of the opening of the receiving groove 1102 to achieve the heating function. After heating is completed, the heating device can be lowered using the lifting mechanism, for example, to retract completely into the receiving groove 1102, thereby avoiding interference or collision with the positioning device 120 or the housing support device 130 that slides and translates in subsequent processes.

[0057] like Figure 3 As shown, based on the structural design that the stator positioning device 120 and the housing support device 130 are respectively movably mounted on the machine base 110, in one embodiment of this disclosure, the stator positioning device 120 and the housing support device 130 can be arranged at intervals along a first direction, which can be referred to as direction D1 shown in the accompanying drawings. Furthermore, the moving paths of the stator positioning device 120 and the housing support device 130 can each be straight paths extending along the first direction.

[0058] like Figure 3As shown, in one embodiment of this disclosure, the machine tool 110 may be provided with a first track 111 and a second track 112 extending along a first direction. Specifically, the housing support device 130 is slidably disposed on the first track 111, and the housing support device 130 can be driven by a first translation drive mechanism, which can be a servo motor, an electric actuator, etc. The stator positioning device 120 is slidably disposed on the second track 112, and the stator positioning device 120 can be driven by a second translation drive mechanism, which can be a servo motor, an electric actuator, etc. Based on this, the first track 111 has a first end 1111 located at a target position, and the second track 112 has a second end 1121 located at a target position. The first end 1111 and the second end 1121 can overlap in the first direction, and furthermore, the first end 1111 and the second end 1121 can be spaced apart in the second direction. Through the above structural design, this disclosure can realize the translational sliding of the housing bearing device 130 and the stator positioning device 120 by using the first track 111 and the second track 112, and can realize that the two can move to the target position of the machine platform 110 respectively. On this basis, a translational structure scheme with simple structure and easy implementation is provided.

[0059] like Figure 4 As shown, in one embodiment of this disclosure, the stator positioning device 120 may include a base 121 and a support 122. Specifically, the base 121 is disposed on the machine base 110. The support 122 is used to support the stator, and the support 122 is movably disposed on the base 121 via a stator floating mechanism 123, which has a floating degree of freedom in the horizontal direction. Through the above structural design, during the fitting process of the housing and the stator, this disclosure can utilize the stator floating mechanism 123 to realize the floating of the stator in the horizontal direction, ensuring the adaptability of the fitting action, improving the assembly effect, and ensuring product quality.

[0060] like Figure 4As shown, based on the structural design of the support 122 being movably mounted on the base 121 via the stator floating mechanism 123, in one embodiment of this disclosure, the stator positioning device 120 is translatably mounted on the machine tool 110, and the movement path is a straight path extending along a first direction. Based on this, the stator floating mechanism 123 may include two sets of floating slide rails, namely a first floating slide rail 1231 and a second floating slide rail 1232. One set of floating slide rails (e.g., the first floating slide rail 1231) extends along the first direction, and the other set of floating slide rails (e.g., the second floating slide rail 1232) extends along a second direction, which can be referred to as direction D2 shown in the accompanying drawings, and is perpendicular to the first direction. The first floating slide rail 1231 is mounted on the base 121, the second floating slide rail 1232 is slidably mounted on the first floating slide rail 1231, and the support 122 is slidably mounted on the second floating slide rail 1232. Through the above structural design, this disclosure utilizes two sets of floating slide rails with relatively perpendicular extension directions to realize the horizontal floating design of the stator positioning device 120. The structure is simple and reliable, and can realize the rapid floating response of the stator.

[0061] like Figure 5 As shown, in one embodiment of this disclosure, the stator positioning device 120 may further include a stator planar floating centering mechanism 124. This stator planar floating centering mechanism 124 is disposed on the base 121 and can switch between a first state and a second state. In the first state, the stator planar floating centering mechanism 124 locks the relative position of the support 122 and the base 121. In the second state, the stator planar floating centering mechanism 124 releases, allowing the support 122 to float relative to the base 121 via the stator floating mechanism 123. Accordingly, the locking and unlocking states of the stator planar floating centering mechanism 124 can be selectively switched according to the actual needs of the heat fitting process. For example, during the fitting process, when the housing descends to a position where the distance between the stator's oil ring and the step of the housing cavity is, for example, 5 mm, the stator planar floating centering mechanism 124 can switch from the locked state to the unlocked state. At this time, the stator positioning device 120 carrying the stator has a horizontal floating function, specifically a floating function along the first and second directions.

[0062] like Figure 5As shown, in one embodiment of this disclosure, the stator positioning device 120 may further include a stator angular floating centering mechanism 125 for angular positioning of the stator on the support 122. The stator angular floating centering mechanism 125 may be, for example, but is not limited to, a centering pneumatic gripper. Based on this, the stator angular floating centering mechanism 125 can selectively switch between locked and unlocked states. For example, during the fitting process, when the stator planar floating centering mechanism 124 is unlocked, and the housing further descends to a position, for example, 5 mm from the fitting position, the stator angular floating centering mechanism 125 can switch from a locked state to an unlocked state. At this time, the stator positioning device 120 carrying the stator has an angular floating function. Finally, with both the angular floating function and the aforementioned horizontal floating function present, the housing descends to the fitting position, after which the cooling device 160 can be activated for cooling.

[0063] like Figure 6 As shown, in one embodiment of this disclosure, the housing positioning and lifting device 150 may further include a housing centering mechanism 152. This housing centering mechanism 152 is disposed in the extended-range type 151 of the housing positioning and lifting device 150. The extended-range type 151 is used to accommodate the housing, and a hole can be provided at the center of the top of the extended-range type 151 to install the housing centering mechanism 152, with the housing centering mechanism 152 extending into the extended-range type 151. Based on this, the housing centering mechanism 152 can selectively switch between locked and unlocked states. For example, during the process of the housing positioning and lifting device 150 extracting, lifting (including fitting) the housing, the housing centering mechanism 152 can lock the housing to achieve centering and positioning. After the fitting is completed and the cooling device 160 cools the assembly to a preset temperature, the housing centering mechanism 152 can switch to the unlocked state, and then rise with the housing positioning and lifting device 150, leaving the assembly on the stator positioning device 120 so that other transfer equipment (such as a robot) can transfer the assembly to other workstations.

[0064] In one embodiment of this disclosure, the stator thermal fitting proposed in this disclosure may further include a temperature acquisition element for measuring the temperature of the housing during the heating and fitting processes. For example, the temperature acquisition element may be disposed on the housing positioning and lifting device 150. During the heating process of the housing, the housing positioning and lifting device 150 may be appropriately lowered to approach the housing, for example, to a distance of 3mm to 5mm from the housing, thereby facilitating more accurate temperature measurement of the housing by the temperature acquisition element. Furthermore, the temperature acquisition element may employ a retractable design, for example, extending closer to the housing when temperature measurement is required and retracting after measurement. For example, the temperature acquisition element may extend to measure the temperature during the heating process (or, more specifically, when the housing positioning and lifting device 150 is appropriately lowered to approach the housing) and the fitting process. Additionally, the temperature acquisition element may include a main coil temperature sensor and an auxiliary coil temperature sensor.

[0065] It should be noted that the stator heat-shrinking apparatus shown in the accompanying drawings and described in this specification are merely a few examples among many stator heat-shrinking apparatuses capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the stator heat-shrinking apparatus shown in the accompanying drawings or described in this specification.

[0066] In summary, the stator heat-shrinking equipment proposed in this disclosure adopts a sleeve-fitting scheme with the shell on top and the stator on the bottom. Compared with the sleeve-fitting scheme with the stator on top and the shell on the bottom, this improves the axial sealing effect of the stator's sealing oil ring. Based on this, this disclosure integrates the cooling device 160 into the shell positioning and lifting device 150, i.e., the cooling device 160 is integrated into the stator heat-shrinking equipment. Specifically, the cooling device 160 and the shell are raised and lowered synchronously to directly cool the assembled components. This achieves rapid cooling of the components, avoids relative retraction displacement between the assembled stator and the shell, optimizes the stator heat-shrinking assembly effect, improves the yield of stator products, and increases production efficiency.

[0067] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0068] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0070] It should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein according to the specific circumstances.

[0071] Although terms such as “first” and “second” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. 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. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0073] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A stator heat fitting device for heat fitting a stator and a housing to obtain an assembly; characterized in that, The stator heat-sheltering device includes: Machine (110); A frame (1101) is disposed on the machine base (110); A stator positioning device (120) is provided on the machine base (110) for positioning the stator; A housing support device (130) is disposed on the machine base (110) for supporting the housing; A heating device, which is provided on the machine base (110), is used to heat the shell supported by the shell support device (130); A housing positioning and lifting device (150), which is vertically and flexibly mounted on the frame (1101), is used to extract and position the heated housing and drive it to rise and fall; and A cooling device (160) is provided on the housing positioning and lifting device (150) for cooling the assembly; The frame (1101) can be slidably disposed on the machine platform (110), or the stator positioning device (120) and the housing bearing device (130) can be slidably disposed on the machine platform (110) respectively, so that the housing positioning lifting device (150) can switch between two position states: above the stator positioning device (120) and above the housing bearing device (130).

2. The stator heat-shrinking device according to claim 1, characterized in that, The cooling device (160) includes: The air source is located above the housing positioning and lifting device (150); and The air duct (161) has one end connected to the air source and the other end provided with an air outlet; The airflow output from the air source blows onto the assembly through the air outlet.

3. The stator heat-shrinking device according to claim 2, characterized in that, The air source is equipped with a cooling mechanism for cooling the airflow output by the air source.

4. The stator heat-shrinking device according to claim 2, characterized in that, The air duct (161) is equipped with a filter for filtering impurities in the airflow.

5. The stator heat-shrinking device according to claim 1, characterized in that, The frame (1101) is fixedly mounted on the machine base (110), and the stator positioning device (120) and the housing support device (130) are respectively movably mounted on the machine base (110); wherein, the machine base (110) has a target position located directly below the housing positioning lifting device (150), the heating device is mounted at the target position, and the moving paths of the stator positioning device (120) and the housing support device (130) respectively pass through the target position.

6. The stator heat-shrinking device according to claim 5, characterized in that, The stator positioning device (120) and the housing support device (130) are arranged at intervals along a first direction, and the moving paths of the stator positioning device (120) and the housing support device (130) are respectively straight paths extending along the first direction.

7. The stator heat-shrinking device according to claim 6, characterized in that, The machine platform (110) is provided with a first track (111) and a second track (112) extending along the first direction respectively. The housing support device (130) is slidably disposed on the first track (111) and driven by a first translation drive mechanism. The stator positioning device (120) is slidably disposed on the second track (112) and driven by a second translation drive mechanism. The first track (111) has a first end (1111) located at the target position, and the second track (112) has a second end (1121) located at the target position. The first end (1111) and the second end (1121) are arranged to overlap in the first direction.

8. The stator heat-shrinking device according to claim 1, characterized in that, The stator positioning device (120) includes: A base (121) is disposed on the machine base (110); The support (122) is used to support the stator. The support (122) is movably mounted on the base (121) via the stator floating mechanism (123), which has a floating degree of freedom in the horizontal direction.

9. The stator heat-shrinking device according to claim 8, characterized in that, The stator positioning device (120) is translatably mounted on the machine base (110), and the moving path is a straight path extending along the first direction; wherein, the stator floating mechanism (123) includes a first floating slide rail (1231) and a second floating slide rail (1232), one of the first floating slide rail (1231) and the second floating slide rail (1232) extends along the first direction, and the other extends along a second direction perpendicular to the first direction; the first floating slide rail (1231) is mounted on the base (121), the second floating slide rail (1232) is slidably mounted on the first floating slide rail (1231), and the bearing seat (122) is slidably mounted on the second floating slide rail (1232).

10. The stator heat-shrinking device according to claim 8, characterized in that, The stator positioning device (120) further includes: A stator plane floating centering mechanism (124) is disposed on the base (121) and can switch between a first state and a second state. In the first state, the stator plane floating centering mechanism (124) locks the relative position of the support seat (122) and the base (121). In the second state, the stator plane floating centering mechanism (124) releases the lock so that the support seat (122) can float relative to the base (121) via the stator floating mechanism (123).

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