Rotor fixing device for transportation of large vertical motor

Abstract

The utility model discloses a rotor fixing device for transportation of a large vertical motor, which belongs to the technical field of motor production and comprises a fixing plate, fastening components are arranged on two sides of the fixing plate, a motor end cover is connected to one end, far away from the fixing plate, of each fastening component, and a motor rotating shaft is detachably connected to the middle of the fixing plate. The whole fixing device disperses vibration and impact force in the transportation process to the whole device structure through the fixing plate and the fastening assembly, so that damage to the motor rotor is avoided, the stability of the motor in the transportation process is ensured, and the rotor can be installed at any position relative to the stator.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor production, in particular to a rotor fixing device for transporting a large vertical motor. Background Art

[0002] Large vertical motors require rotor fixation during transportation due to their unique structural characteristics and high-precision requirements. These motors are typically equipped with sliding bearings, which lack sufficient radial support and restraint during transportation, potentially causing the rotor to wobble in both the axial and radial directions. External forces such as vibration and impact during transportation can easily cause the rotor to come into contact with the stator, potentially leading to rotor misalignment. This can damage the motor bearings and potentially alter the gap between the stator and rotor, impacting overall motor performance. Therefore, rotor fixation is essential to ensure safe transportation and protect the motor's internal precision components.

[0003] However, in the actual application of large vertical motors, their upper and lower bearings mostly adopt a sliding bearing structure. After the motor is assembled and tested, due to the limitations of the sliding bearings and the high inertia characteristics of the motor, it is impossible to turn the motor without the help of complex tools, and the relative position of the stator and rotor cannot be changed, making it difficult to install the rotor fixing device, which in turn affects the subsequent assembly and operation safety of the motor, and there is a problem of ineffective fixation. Utility Model Content

[0004] The purpose of the present invention is to provide a rotor fixing device for transporting a large vertical motor, so as to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] A rotor fixing device for transporting a large vertical motor is provided, comprising a fixing plate with fastening components provided on both sides of the fixing plate, the end of the fastening component away from the fixing plate is connected to the motor end cover, and the middle of the fixing plate is detachably connected to the motor shaft.

[0006] Furthermore, connecting holes are provided on both sides of the fixing plate, and fastening components are provided in the connecting holes, which facilitates the installation and disassembly of the fastening components.

[0007] Furthermore, the fastening assembly includes a threaded connecting rod, each of which is provided with a threaded connection portion. The threaded connection portions on both sides are respectively connected to the connection hole and the motor end cover. The threaded connecting rod is provided with a threaded connection portion on both sides, respectively used to threadably connect to the fixing plate and the motor end cover. One side is connected to the connection hole on the fixing plate by threads. The other side is connected to the connection hole in the motor end cover by threads. The threaded connection portion of the threaded connecting rod connects the fixing plate and the motor end cover respectively. The threads are tightened to form a firm mechanical connection, ensuring that the fixing plate and the motor end cover do not move relative to each other during transportation, thereby fixing the rotor.

[0008] Furthermore, each threaded rod is provided with a flat groove in the middle, which provides a flat contact surface for a wrench or other tool to work with, solving the problem of difficulty in effectively applying torque when relying solely on a smooth cylindrical surface. By applying force with the tool, the user can easily rotate or tighten the threaded rod, quickly completing tightening or removal operations.

[0009] Furthermore, circular arc notches are provided on both sides of the middle portion of the fixing plate, and fastening bolts for fixing the motor shaft are provided on the upper portion of the circular arc notches, so that the fixing device can be installed in any position of the rotor relative to the stator, and the circular arc notches are connected to two symmetrically distributed screw holes on the end face of the motor shaft through a fastening assembly, so that the rotor can be installed in any position relative to the stator without turning the machine, that is, it can be installed in any relative position of the stator and rotor, which simplifies the installation process and can be quickly fixed or released by adjusting the fastening bolts.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] During the transportation of the motor, the device is first fixed to the motor shaft through the arc opening in the fixing plate to keep the rotor stable, and the two ends of the fixing plate are connected to the motor end cover through the fastening assembly to form an overall fixed structure. The entire fixing device disperses the vibration and impact force during transportation to the entire device structure through the fixing plate and the fastening assembly, thereby avoiding damage to the motor rotor and ensuring the stability of the motor during transportation; and the motor shaft is detachably connected to the middle part of the fixing plate, and the rotor can be installed in any position relative to the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of a rotor fixing device for transporting large vertical motors;

[0014] Figure 2 A schematic diagram of the fixed plate structure provided by the utility model;

[0015] Figure 3 This is a schematic diagram of the fastening assembly structure provided by the utility model.

[0016] In the figure: 1. fixing plate; 11. connecting hole; 12. arc notch; 2. fastening assembly; 21. threaded connecting rod; 211. flat groove; 22. threaded connection part; 3. motor end cover; 4. motor shaft; 5. fastening bolt. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0018] Obviously, the drawings described below are merely examples or embodiments of the present application. Those skilled in the art can, without inventive effort, apply the present application to other similar scenarios based on these drawings. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, changes in design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in this application.

[0019] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repetitive descriptions of substantially identical structures may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Furthermore, the drawings and the following description are provided to facilitate a thorough understanding of this application by those skilled in the art and are not intended to limit the subject matter recited in the claims.

[0020] See also Figure 1-3As shown, in an embodiment of the present invention, a rotor fixing device for transporting a large vertical motor includes a fixing plate 1, fastening assemblies 2 are provided on both sides of the fixing plate 1, and the end of the fastening assembly 2 away from the fixing plate 1 is connected to the motor end cover 3. The middle part of the fixing plate 1 is detachably connected to the motor shaft 4. The fixing plate 1 is connected to the motor shaft 4 through two symmetrically distributed arc openings in the middle, providing the main fixed support for the entire rotor. The fastening assemblies 2 are located on both sides of the fixing plate 1 and are used to connect to the motor end cover 3. During the transportation of the motor, the device is first fixed to the motor shaft 4 through the arc openings in the fixing plate 1 to keep the rotor stable. The two ends of the fixing plate 1 are connected to the motor end cover 3 through the fastening assemblies 2 to form an integral fixed structure. The entire fixing device distributes the vibration and impact force during transportation to the entire device structure through the fixing plate 1 and the fastening assemblies 2, thereby avoiding damage to the motor rotor and ensuring the stability of the motor during transportation. The motor shaft 4 is detachably connected to the middle part of the fixing plate 1, and the rotor can be installed in any position relative to the stator.

[0021] In one embodiment, see Figure 1 、 Figure 2 and Figure 3 As shown, connection holes 11 are provided on both sides of the fixing plate 1 , and fastening components 2 are provided in the connection holes 11 to facilitate installation and disassembly of the fastening components 2 .

[0022] In one embodiment, see Figure 1 、 Figure 2 and Figure 3 As shown, the fastening assembly 2 includes a threaded connecting rod 21, with threaded connecting portions 22 provided on both sides of the threaded connecting rod 21. The threaded connecting portions 22 on both sides are respectively connected to the connecting hole 11 and the motor end cover 3. The threaded connecting rod 21 is provided with threaded connecting portions 22 on both sides, respectively used to perform threaded connections with the fixing plate 1 and the motor end cover 3. One side is connected to the connecting hole 11 on the fixing plate 1 through threads. The other side is connected to the connecting hole 11 in the motor end cover 3 through threads. The threaded connecting portions 22 of the threaded connecting rod 21 respectively connect the fixing plate 1 and the motor end cover 3. Through threaded fastening, a firm mechanical connection is formed, ensuring that the fixing plate 1 and the motor end cover 3 do not move relative to each other during transportation, thereby fixing the rotor.

[0023] The threaded structure offers adjustability. By tightening or loosening the threaded connecting rod 21, the relative position between the fixing plate 1 and the motor end cover 3 can be precisely adjusted to accommodate motors of different models or sizes. The fastening assembly 2, through the threaded connecting rod 21, transfers vibration and impact forces generated during transportation from the fixing plate 1 to the motor end cover 3, evenly distributing these forces to prevent concentrated stress from damaging the fixture or motor components. The threaded connection offers the advantage of repeatable assembly and disassembly. After the motor is transported, the fastening assembly 2 can be easily removed, facilitating installation and maintenance.

[0024] In one embodiment, see Figure 1 and Figure 3 As shown, the threaded connecting rod 21 is provided with a flat groove 211 in the middle. The flat groove 211 is located in the middle of the threaded connecting rod 21 and is one or more flat surfaces, which contrast with the cylindrical portion of the screw. The shape of the flat groove 211 is generally a flat area parallel to the rod axis, which can be matched with a wrench or tool head. The flat groove 211 provides an operable flat contact surface for the wrench or other tool, solving the problem of difficulty in effectively applying torque when relying solely on a smooth cylinder. By applying force with the tool, the user can easily rotate or tighten the threaded connecting rod 21, thereby quickly completing the tightening or disassembly operation.

[0025] In one embodiment, see Figure 1 and Figure 3 As shown, arc notches 12 are provided on both sides of the middle of the fixing plate 1, and fastening bolts 5 for fixing the motor shaft 4 are provided on the upper part of the arc notch 12. The combination of the arc notch 12 and the fastening bolts 5 realizes fast installation and disassembly, which adapts to high-frequency operation requirements. The arc notch 12 is connected to two symmetrically distributed screw holes (a total of four holes are evenly distributed) on the end face of the motor shaft 4 through the fastening component 2, so that the rotor can be installed in any position relative to the stator without turning the machine, that is, the stator and rotor can be installed in any relative position, which simplifies the installation process. The motor shaft 4 can be quickly fixed or released by adjusting the fastening bolts 5.

[0026] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A rotor fixing device for transporting a large vertical motor, comprising a fixing plate (1), characterized in that: Fastening components (2) are provided on both sides of the fixing plate (1); one end of the fastening component (2) away from the fixing plate (1) is connected to a motor end cover (3); and a motor shaft (4) is detachably connected to the middle of the fixing plate (1).

2. A rotor fixing device for transporting a large vertical motor according to claim 1, characterized in that: Connecting holes (11) are provided on both sides of the fixing plate (1), and fastening components (2) are provided in the connecting holes (11).

3. A rotor fixing device for transporting a large vertical motor according to claim 2, characterized in that: The fastening assembly (2) comprises a threaded connecting rod (21), and threaded connecting parts (22) are provided on both sides of the threaded connecting rod (21). The threaded connecting parts (22) on both sides are respectively connected to the connecting hole (11) and the motor end cover (3).

4. A rotor fixing device for transporting a large vertical motor according to claim 3, characterized in that: A plane groove (211) is provided in the middle of each of the threaded connecting rods (21).

5. The rotor fixing device for transporting a large vertical motor according to claim 1, characterized in that: Circular arc notches (12) are provided on both sides of the middle of the fixing plate (1), and fastening bolts (5) for fixing the motor shaft (4) are provided on the upper part of the circular arc notches (12).

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