Motor maintenance auxiliary device

Abstract

The utility model provides a motor maintenance auxiliary device, which at least comprises a connecting part and a fixing part, and is characterized in that the connecting part is assembled and connected with a motor to be maintained and limits the relative position of the motor to be maintained; and the fixing part is assembled and connected with the fastening equipment. When the motor is maintained, the motor maintenance auxiliary device provided by the utility model is used as a middle connecting piece and plays a role in clamping and fixing after being connected with the motor, so that the purpose of facilitating maintenance after the motor is fixed is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical maintenance technology, and in particular to an auxiliary device for motor maintenance. Background Technology

[0002] As an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction, the electric motor is widely used in various industries and technical fields. Rail vehicles also use electric motors as transmission devices to drive the movement of certain components. Like other components used on rail vehicles, electric motors also require regular inspection and maintenance, and fault detection should be performed during daily use for timely repair and replacement.

[0003] Multiple transport platforms within the company experienced motor malfunction alarms. After troubleshooting, it was confirmed that the motor rotor shaft splines were severely worn, causing the equipment to shut down. However, since the motors were imported products, the procurement cycle was long and the price was high, which could not meet the on-site requirements. Furthermore, the motors had special structures, making it impossible to clamp them from the outside. The rotor shaft and splines were an integral structure, making it impossible to directly replace the splines, which greatly increased the difficulty of motor repair.

[0004] Similar problems exist for motors used in other fields. It is necessary to study the motor structure and develop an auxiliary device and maintenance method to solve these problems. Utility Model Content

[0005] The main purpose of this utility model is to solve the above-mentioned problems and shortcomings, and to provide an auxiliary device for motor repair. During motor repair, it serves as an intermediate connector and, after being connected to the motor, plays a role in clamping and fixing, so as to facilitate the repair of the motor after it is fixed.

[0006] To achieve the purpose of this utility model, this utility model provides an auxiliary device for motor maintenance, which adopts the following technical solution:

[0007] An auxiliary device for motor maintenance includes at least a connecting part and a fixing part, wherein:

[0008] The connecting part is assembled and connected to the motor to be repaired, and defines the relative position of the motor to be repaired;

[0009] The fixing part is assembled and connected with the fastening equipment.

[0010] Furthermore, the connecting part is a sleeve structure, which is fitted and connected to the mounting base of the motor to be repaired.

[0011] Furthermore, the sleeve is provided with a limiting structure that limits the relative position of the mounting base and the sleeve.

[0012] Furthermore, a limiting wall is provided inside the sleeve, and the limiting structure is disposed at the limiting wall and / or the inner wall of the sleeve.

[0013] Furthermore, at least one limiting hole is provided on the limiting wall. After the sleeve and the mounting base are fitted together, the bolt head on the mounting base is embedded in the limiting hole, limiting the relative position of the sleeve and the mounting base.

[0014] Furthermore, the number and position of the limiting holes are set to correspond to the bolt heads on the mounting base.

[0015] Furthermore, the connecting part and the fixing part are integrally formed, with an H-shaped cross-section; or the connecting part and the fixing part are detachably connected, and the connection angle between the connecting part and the fixing part can be adjusted.

[0016] Furthermore, the device has a cylindrical structure with an internal limiting wall. The distance between the limiting wall and the end of the connecting part is less than or equal to the height of the mounting base of the motor to be repaired.

[0017] Furthermore, the outer surface of the connection between the fixing part and the fastening device is provided with a frosted surface.

[0018] Furthermore, the inner surface of the fixing part is provided with threads, which are threadedly connected to the fastening device.

[0019] In summary, the motor maintenance auxiliary device provided by this utility model has the following technical advantages compared with the prior art:

[0020] 1. The connecting part is assembled and connected to the motor mounting base by a plug-in assembly, and can be limited by the bolt head on the mounting base. The fixing part can be directly fixed so that the motor cannot rotate. The overall structure is simple and reliable.

[0021] 2. It adopts a plug-in connection method and can be directly assembled and connected to the motor. The mounting base has its own structure for limiting, which prevents relative sliding between the device and the motor mounting base, making the use more reliable.

[0022] 3. The motor mounting base and auxiliary device are assembled and connected through corresponding limiting structures to achieve concentric connection. This facilitates the detection and assurance of the concentricity between the spline and the rotor shaft center after motor repair via the auxiliary device. Attached image description:

[0023] Figure 1 This utility model provides a schematic diagram of the usage status of an auxiliary device for motor maintenance;

[0024] Figure 2 This utility model provides a cross-sectional view of a motor maintenance auxiliary device in use.

[0025] Figure 3This utility model provides a cross-sectional view of the connection between the connecting part of the motor repair auxiliary device and the motor mounting base;

[0026] Figure 4 This utility model provides a cross-sectional view of an auxiliary device for motor maintenance;

[0027] Figure 5 Top view of an auxiliary device for motor maintenance provided by this utility model;

[0028] Among them, there is a motor 1, a magnetic ring 11, a spline 12, a mounting base 13, a motor rotor shaft 14, a bolt 15, an auxiliary device 2, a fixing part 21, a connecting part 22, a limiting wall 23, and a limiting hole 24.

[0029] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to 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 this utility model based on the specific circumstances.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] A motor 1 maintenance auxiliary device 2 includes at least a connecting part 22 and a fixing part 21, wherein: the connecting part 22 is assembled and connected to the motor 1 to be maintained, and defines the relative position of the motor 1 to be maintained;

[0035] The fixing part 21 is assembled and connected with the fastening equipment.

[0036] In this embodiment, taking the maintenance of a motor 1 with splines 12 used on a rail vehicle as an example, the specific structure and usage method of the auxiliary device 2 used in the maintenance process are introduced.

[0037] like Figure 1 The motor 1 shown has a spline 12 at one end, and a magnetic ring 11 is provided at the connection between the motor rotor shaft 14 and the spline 12. The spline 12 rotates with the rotor shaft. The other end of the motor 1 has a recessed portion, within which a copper head mounting base 13 for the motor 1 is installed. The other end of the electronic rotor shaft is assembled and fixed to the mounting base 13 within the recessed portion. During maintenance, whether replacing the spline 12 or repairing only the spline 12, it is necessary to fix the spline 12, i.e., to fix the position of the motor, to prevent rotation during maintenance. Moreover, the magnetic ring 11 must not be damaged during maintenance. The outer surface of the motor 1 is cylindrical and its size is relatively large, making it difficult to fix, which makes fixing the position of the motor 1 during maintenance very difficult.

[0038] In this embodiment, to secure the motor 1, an auxiliary device 2 is designed for use during motor 1 maintenance, such as... Figures 1 to 5 As shown, measurements are taken of the motor 1 used on the vehicle and the newly purchased motor 1 mounting base 13 to obtain the dimensions of the motor 1 copper head mounting base 13 and the recessed part, as well as the position and bolt head dimensions of the mounting bolt 15 at the mounting base 13, and to obtain the corresponding technical requirements for the design and manufacture of the auxiliary device 2.

[0039] The auxiliary device 2 provided by this utility model includes at least a connecting part 22 and a fixing part 21, such as Figures 2 to 5 As shown, in this embodiment, the connecting part 22 and the fixing part 21 are integrally formed and have a cylindrical structure. One end of the cylinder is the connecting part 22 and the other end is the fixing part 21. The inner diameter of the cylinder wall is greater than or equal to the outer diameter of the mounting base 13. In use, the device is fitted onto the mounting base 13. Furthermore, the connecting part 22 is fitted and connected to the mounting base 13, or in other words, the connecting part 22 is inserted and fixed to the mounting base 13, and the mounting base 13 is embedded in the cavity of the connecting part 22.

[0040] The device has an H-shaped longitudinal section along the length of the cylinder. A limiting wall 23 is provided in the cavity of the cylinder. The limiting wall 23 is located near the connecting part 22 in the cavity of the cylinder. The distance between the end of the connecting part 22 and the limiting wall 23 is less than or equal to the height of the mounting base 13, so that after the connecting part 22 and the mounting base 13 are inserted into place, the top of the mounting base 13 abuts against the limiting wall 23.

[0041] Furthermore, limiting holes 24 are provided on the limiting wall 23. There are multiple limiting holes 24, and the hole diameter and the relative position between each hole correspond to the position and size of the bolt head on the mounting base 13. After the connecting part 22 and the mounting base 13 are inserted into place, each bolt head is embedded in the corresponding limiting hole 24, thereby limiting the relative position between the device and the mounting base 13, that is, limiting the relative position between the motor rotor shaft 14 and the device. Fixing the device can fix the motor 1.

[0042] In practical applications, any type and shape of limiting structure can be provided at the connecting part 22, including but not limited to the limiting hole 24 mentioned above. Alternatively, the inner wall of the cylinder at the connecting part 22 can be provided with the same texture as the outer wall of the mounting base 13 to serve as a limiting structure. A protruding structure can also be provided on the limiting wall 23 according to the relative position of each bolt head. The protruding structure can be plate-shaped or columnar, and can be inserted between adjacent bolt heads to serve as a limiting structure. Alternatively, a grid can be provided on the limiting wall 23, allowing each bolt head to be embedded within the grid, thus serving as a limiting structure. Furthermore, the limiting hole 24 can be a through hole or a recessed, one-end closed groove structure. Further still, when the bolt head is countersunk, i.e., the mounting base 13 has a countersunk hole into which the bolt head is embedded, a protrusion corresponding to the countersunk hole structure and position can be provided on the limiting wall 23 at the position corresponding to the countersunk hole on the mounting base 13. After installation, the protrusion is embedded in the countersunk hole, serving as a limiting structure.

[0043] Furthermore, such as Figure 2 and Figure 3 As shown, in this embodiment, the limiting hole 24 corresponds to the bolt hole 15 on the mounting base 13. During maintenance, the bolts 15 on the mounting base 13 are first removed. After the mounting base 13 is assembled and connected with the auxiliary device, the removed bolts 15 are used to assemble the limiting wall 23 and the mounting base 13 together, so that the mounting base and the limiting wall 23 are bolted together. In practical applications, a corresponding and suitable limiting structure can be set on the connecting part 22 according to the specific structure of the mounting base 13. There are no requirements or limitations. The limiting structure can be set at the limiting wall 23 or at any position on the connecting part 22, as long as it can limit the relative position of the mounting base 13 and the connecting part 22. There are no specific requirements or limitations.

[0044] In this embodiment, the connecting part 22 and the fixing part 21 are integrally formed at both ends of the cylindrical structure, which can be bounded by the limiting wall 23. The longer end is the fixing part 21, which is used to assemble and connect with the fastening equipment, that is, it is fixed by the fastening assembly device.

[0045] The fixing method can be any form. It can be clamping, where the fastening equipment clamps and fixes the fixing part 21 to prevent the fixing part 21 from rotating together with the connecting part 22 and the motor rotor shaft 14. A frosted surface can be provided on the outer wall of the cylinder at the fixing part 21 to increase friction and prevent clamping failure. Alternatively, it can be threaded connection, where an internal thread is provided on the inner wall of the cylinder at the fixing part 21, and an external thread is provided at the corresponding connection between the fastening equipment and the fixing part 21, so that the fastening equipment and the fixing part 21 are threadedly connected.

[0046] In this embodiment, the fixing part 21 and the connecting part 22 are respectively located at both ends of the cylindrical structure and are coaxially arranged. In practical applications, the fixing part 21 and the connecting part 22 can be connected in any way and at any angle. They can be used as intermediate connecting parts to assemble and connect the fastening equipment with the mounting seat 13 at the end of the motor rotor shaft 14, thereby limiting the motor rotor shaft 14 from rotating.

[0047] The fixing part 21 can have any structural form, including but not limited to the cylindrical structure described above, or a plate-shaped structure, ring-shaped structure, or other arbitrary structure that is easier to fix. The clamping part and the connecting part 22 can be connected at any angle. For example, the fixing part 21 and the connecting part 22 can be connected to form a V-shaped structure. It is recommended that the included angle of the V-shape be an obtuse angle to avoid interference between the fixing part 21 and the main structure of the motor 1.

[0048] Regardless of the structure of the fixing part 21 or the connection method between the clamping part and the connecting part 22, the connecting part 22 can adopt a sleeve structure. A limiting structure as described above is provided inside the sleeve to limit the relative position between the sleeve and the mounting base 13. Through the fixing effect of the fixing part 21, the motor 1 is prevented from rotating during maintenance.

[0049] Specifically, as described above, a limiting wall 23 is provided inside the sleeve, and a limiting structure is provided at any position of the limiting wall 23 and / or the cylinder. The structural form of the limiting wall 23 is determined according to the structural form of the top surface of the mounting base 13. The limiting structure can be a limiting hole 24 provided on the limiting wall 23, and there is at least one limiting hole 24. After the sleeve and the mounting base 13 are fitted together (inserted), the limiting wall 23 abuts against the top surface of the mounting base 13, and the bolt head is embedded in the limiting hole 24, limiting the relative position of the sleeve, i.e., the auxiliary device 2, and the motor rotor shaft 14.

[0050] Furthermore, the connecting part 22 and the fixing part 21 are detachably connected, meaning the device has a split structure. This facilitates the replacement of the corresponding fixing part 21, i.e., the sleeve, according to the structure and size of the mounting base 13 of the motor 1 to be repaired. The connection angle between the connecting part 22 and the clamping part is adjustable, further expanding the device's applicability. For the split device, the sleeve's fitting portion corresponds to different models and structural sizes of the mounting base 13, while the portion connecting to the fixing part 21 is a standard part. This allows different sleeves to be assembled and fixed with the same fixing part 21, forming a complete device. This reduces the number of fixing parts 21 required, lowers production costs, and increases the device's versatility.

[0051] This utility model further provides a method for repairing the spline 12 of the motor 1, specifically:

[0052] 1. Measure the dimensions of the bolt holes 15 of the copper head mounting base 13 of the motor 1, the dimensions of the rotor shaft and spline 12, and the distribution spacing of the spline 12, and obtain the technical requirements such as material hardness. Based on the obtained dimensions of the mounting base 13, determine the relative positional relationship between the fastening equipment and the motor 1, and determine the relative positional relationship between the fixing part 21 and the connecting part 22, such as coaxiality, having a certain included angle, etc. Based on the structural form of the fixing part 21 of the fastening equipment, set the structural form of the fixing part 21, and thus design the processing design drawings of the auxiliary device 2.

[0053] 2. Based on the device design drawings and the corresponding technical requirements such as material quality, select suitable materials and manufacture auxiliary devices 2. For different models of motors 1, manufacture sleeves of split devices with different sizes of mounting bases 13 and at least one fixing part 21, or manufacture corresponding integrated auxiliary devices 2 for different models.

[0054] 3. When motor 1 malfunctions and it is determined that spline 12 of motor 1 needs to be repaired, assemble and connect the connecting part 22 (sleeve) of the corresponding device to the copper head mounting base 13 of motor 1, adjust the orientation of the connecting part 22 so that the bolt head on the top surface of the mounting base 13 is embedded in the limiting hole 24 on the limiting wall 23, thereby limiting the relative positional relationship between the device, motor 1, and mounting base 13, and place it on a fastening equipment such as a machining lathe to clamp the auxiliary device 2 (fixing part 21) so that motor 1 cannot rotate;

[0055] 4. Based on the structural dimensions of spline 12 obtained in the preceding steps, and according to the maintenance requirements of spline 12 and the dimensions required in the drawing, the spline 12 is planed out to form a smooth cylinder, and a flat keyway is machined on the cylinder.

[0056] 5. According to the dimensions required in the drawing and the distribution spacing and hardness of spline 12, machine spline 12 and flat key;

[0057] 6. Insert the flat key portion of the machined spline 12 into the flat keyway on the cylinder, thereby assembling the newly machined spline 12 onto the motor 1 via the flat key, and the maintenance of the motor 1 is completed.

[0058] 7. If spline 12 wears out again, spline 12 can be replaced directly to repair motor 1.

[0059] Furthermore, after the auxiliary device 2 is assembled and connected with the mounting base 13, the coaxiality of the device and the motor rotor shaft 14 is ensured by the limitation of the limiting structure. This can be achieved by detecting whether the connecting part 22 of the device and the spline 12 are coaxial, thereby detecting whether the spline 12 and the motor rotor shaft 14 are coaxial and the concentricity of the spline 12 and the motor rotor shaft 14 can be detected, thus preventing misalignment of the spline 12 during installation.

[0060] In summary, the motor maintenance auxiliary device provided by this utility model has the following technical advantages compared with the prior art:

[0061] 1. The connecting part is assembled and connected to the motor mounting base by a plug-in assembly, and can be limited by the bolt head on the mounting base. The fixing part can be directly fixed so that the motor cannot rotate. The overall structure is simple and reliable.

[0062] 2. It adopts a plug-in connection method and can be directly assembled and connected to the motor. The mounting base has its own structure for limiting, which prevents relative sliding between the device and the motor mounting base, making the use more reliable.

[0063] 3. The motor mounting base and auxiliary device are assembled and connected through corresponding limiting structures to achieve concentric connection. This facilitates the detection and assurance of the concentricity between the spline and the rotor shaft center after motor repair via the auxiliary device.

[0064] As described above, similar technical solutions can be derived from the given solutions. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model, without departing from the scope of this utility model's technical solution, shall still fall within the scope of this utility model's technical solution.

Claims

1. An auxiliary device for motor maintenance, characterized in that: It includes at least a connecting part and a fixing part, wherein, The connecting part is assembled and connected to the motor to be repaired, and defines the relative position of the motor to be repaired; The fixing part is assembled and connected with the fastening equipment; The connecting part is a sleeve structure, which is fitted and connected to the mounting base of the motor to be repaired; The sleeve is provided with a limiting structure that limits the relative position of the mounting base and the sleeve.

2. The motor maintenance auxiliary device as described in claim 1, characterized in that: The sleeve is provided with a limiting wall, and the limiting structure is provided at the limiting wall and / or the inner wall of the sleeve.

3. The motor maintenance auxiliary device as described in claim 2, characterized in that: At least one limiting hole is provided on the limiting wall. After the sleeve and the mounting base are fitted together, the bolt head on the mounting base is embedded in the limiting hole, limiting the relative position of the sleeve and the mounting base.

4. The motor maintenance auxiliary device as described in claim 3, characterized in that: The number and position of the limiting holes are set to correspond to the bolt heads on the mounting base.

5. A motor maintenance auxiliary device as described in any one of claims 1 to 3, characterized in that: The connecting part and the fixing part are integrally formed and have an H-shaped cross-section; or the connecting part and the fixing part are detachably connected and the connection angle between the connecting part and the fixing part can be adjusted.

6. The motor maintenance auxiliary device as described in claim 5, characterized in that: The device has a cylindrical structure with an internal limiting wall. The distance between the limiting wall and the end of the connecting part is less than or equal to the height of the mounting base of the motor to be repaired.

7. The motor maintenance auxiliary device as described in claim 5, characterized in that: The outer surface of the connection between the fixing part and the fastening device is provided with a frosted surface.

8. The motor maintenance auxiliary device as described in claim 5, characterized in that: The inner surface of the fixing part is provided with threads, which are threadedly connected to the fastening device.

Images