Motor mounting structure and motor

Abstract

The application discloses a motor mounting structure and a motor, and solves the technical problem that the wear of a built-in bearing of a small motor in the prior art easily causes damage of the motor. The motor mounting structure comprises a motor body, an external bearing, a protection piece, a threaded part and a nut, and a first connecting hole is formed in a motor shell; an inner ring of the external bearing is sleeved on a rotating shaft and is in interference fit with the rotating shaft; the protection piece comprises a protection part and a protection plate, and the protection plate is provided with a center hole; the protection plate is sleeved on an outer ring of the external bearing, and the protection plate is in interference fit with the outer ring of the external bearing; the protection piece is provided with a second connecting hole corresponding to the position of the first connecting hole; the protection part extends to one side of the motor shell; the threaded part sequentially penetrates the first connecting hole and the second connecting hole, and the threaded part is in threaded fit with the nut. The motor can be simply and effectively repaired by the mode of adding the external bearing and the protection piece outside the motor shell, the normal rotation of a motor rotor is ensured, and the normal operation of automatic fluorescent inspection is ensured.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, specifically relating to an electric motor mounting structure and an electric motor. Background Technology

[0002] In steel enterprises, automated fluorescence analyzers are used for the compositional analysis of blast furnace iron and slag samples. Servo motors drive grippers to automatically pick up and place samples at various points according to the system program. With increasing production automation, the frequent start-stop, reversal, and variable load operation of the servo motors in automated fluorescence analyzers lead to accelerated wear of the internal bearings, resulting in stator and rotor friction or shaft jamming, affecting the timeliness of sample testing. Because the motor's internal bearings are small and require high precision, replacing them requires specialized tools and advanced technical skills, making it difficult to guarantee axial clearance accuracy. Regular motor replacement is also costly. Summary of the Invention

[0003] To address the technical problem that wear of the built-in bearings in small motors can easily cause motor damage, this application provides a motor mounting structure and a motor.

[0004] In a first aspect of this application, a motor mounting structure is provided, comprising:

[0005] The motor body includes a motor housing and a rotating shaft, wherein the motor housing has a first connecting hole;

[0006] An external bearing includes an outer ring, an inner ring, and rolling elements; the inner ring of the external bearing is fitted onto the rotating shaft and is interference-fitted with the rotating shaft.

[0007] The protective component includes an angled protective part and a protective plate. The protective plate has a central hole, which is coaxially arranged with the external bearing. The protective plate is sleeved on the outer ring of the external bearing, and the protective plate and the outer ring of the external bearing are interference-fitted. Along the circumference of the protective component, the protective component has a second connecting hole corresponding to the position of the first connecting hole. The protective part extends to one side of the motor housing, and the protective part is spaced apart from the motor housing.

[0008] A threaded component and a nut are provided, wherein the threaded component passes through the second connecting hole and the first connecting hole in sequence, and the threaded component and the nut are threadedly engaged to connect and fix the protective component to the motor housing.

[0009] In some embodiments, the threaded component is a screw or bolt, the first connecting hole is a threaded hole, and the second connecting hole is a through hole; the threaded component passes through the second connecting hole and the first connecting hole and is connected and fixed by a nut.

[0010] In some embodiments, the second connection hole is a notch opened along the circumference of the protective plate;

[0011] Alternatively, the second connecting hole is a circular hole arranged circumferentially along the protective plate.

[0012] In some embodiments, the second connecting hole is a notch opened along the circumference of the protective plate, the second connecting hole is a semi-circular hole, and the arc surface of the second connecting hole is opposite to the arc surface of the central hole.

[0013] In some embodiments, the protective plate is sleeved on the outer ring of the external bearing, and the axial height between the upper end face of the protective plate and the upper end face of the outer ring of the external bearing is 0.3mm to 0.6mm.

[0014] In some embodiments, the protective plate and the protective part are integrally formed.

[0015] In some embodiments, the height of the protective part is less than the height of the external bearing.

[0016] In some embodiments, the protective portion is perpendicular to the protective plate;

[0017] And / or, the protective plate is a circular plate or a square plate; the central hole is a circular hole adapted to the outer ring of the external bearing.

[0018] In some embodiments, there are four first connecting holes and four second connecting holes, with the positions of the four first connecting holes and the four second connecting holes corresponding one-to-one.

[0019] In a second aspect of this application, an electric motor is provided, including the above-described motor mounting structure.

[0020] According to one or more embodiments of this application, a motor mounting structure and a motor are provided. The motor mounting structure includes a motor body, an external bearing, a protective component, a threaded component, and a nut. The motor body includes a motor housing and a rotating shaft, and the motor housing has a first connecting hole. The external bearing includes an outer ring, an inner ring, and rolling elements. The inner ring of the external bearing is fitted onto the rotating shaft and is interference-fitted with the rotating shaft. The protective component includes an angled protective portion and a protective plate. The protective plate has a central hole, which is coaxial with the external bearing. The protective plate is fitted onto the outer ring of the external bearing and is interference-fitted with the outer ring of the external bearing. Along the circumference of the protective component, the protective component has a second connecting hole corresponding to the position of the first connecting hole. The protective portion extends to one side of the motor housing, and the protective portion is spaced apart from the motor housing. The threaded component passes through the first connecting hole and the second connecting hole in sequence, and the threaded component is threadedly engaged with the nut to connect and fix the protective component to the motor housing.

[0021] This application provides a simple and effective way to repair a motor by adding an external bearing and protective components to the motor housing, ensuring the normal rotation of the motor rotor and guaranteeing the normal operation of the automatic fluorescent inspection. It solves problems such as jamming caused by wear of the motor's internal bearings, stator-rotor friction, and winding short circuits, while avoiding the difficulties in repair due to insufficient professional tools and technical capabilities, and the high maintenance costs caused by replacing the entire motor. The installation structure of this application is simple and efficient, extending the motor's service life, reducing maintenance costs, and ensuring the timeliness of automatic sample inspection. Attached Figure Description

[0022] Figure 1 A schematic diagram of the motor mounting structure in one or more embodiments of this application is shown.

[0023] Figure 2 It shows Figure 1 A partial schematic diagram of the motor mounting structure.

[0024] Figure 3 It shows Figure 1 A schematic diagram of the protective component.

[0025] Figure 4 It shows Figure 3 A top view of the protective components.

[0026] Explanation of reference numerals in the attached drawings: 100-motor mounting structure, 110-motor body, 111-motor housing, 112-shaft, 113-first connecting hole, 120-external bearing, 130-protective component, 131-protective plate, 132-protective part, 133-second connecting hole, 134-center hole, 140-threaded component, 150-nut. Detailed Implementation

[0027] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] In laboratory automated fluorescence analyzers, a motor drives a gripper to pick up the sample during sample testing. Prolonged operation can lead to problems such as wear on the motor's internal bearings, causing jamming, stator-rotor friction, and winding short circuits, affecting the normal operation of sample testing. The motor is a servo motor, which experiences frequent starts, stops, reversals, and variable loads, resulting in accelerated wear on the internal bearings. This can lead to stator-rotor friction or shaft jamming, impacting the timeliness of sample testing. Due to the small size and high precision of the internal bearings, replacing them requires specialized tools and advanced technical skills, making it difficult to guarantee axial clearance accuracy, and resulting in high costs for regular motor replacement. Insufficient specialized tools and technical capabilities make maintenance difficult, compromising repair accuracy and servo system performance. To ensure the normal operation of the automated fluorescence analyzer, the servo motor needs to be replaced periodically, guaranteeing the timeliness of sample testing. This application provides a motor mounting structure and the motor itself.

[0029] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 According to a first aspect of this application, a motor mounting structure 100 is provided, including a motor body 110, an external bearing 120, a protective component 130, a threaded component 140, and a nut 150. The motor body 110 includes a motor housing 111 and a rotating shaft 112. The motor housing 111 has a first connecting hole 113. The external bearing 120 includes an outer ring, an inner ring, and rolling elements. The inner ring of the external bearing 120 is sleeved on the rotating shaft 112 and is interference-fitted with the rotating shaft 112. The protective component 130 includes a protective part 132 and a protective plate 131 arranged at an angle. The protective plate 131 has a central hole 134. 4. The protective plate 131 is coaxially arranged with the external bearing 120; the protective plate 131 is sleeved on the outer ring of the external bearing 120, and the protective plate 131 and the outer ring of the external bearing 120 are interference fit; along the circumference of the protective member 130, the protective member 130 is provided with a second connecting hole 133 corresponding to the position of the first connecting hole 113; the protective part 132 extends to one side of the motor housing 111, and the protective part 132 and the motor housing 111 are spaced apart; the threaded part 140 passes through the second connecting hole 133 and the first connecting hole 113 in sequence, and the threaded part 140 is threadedly engaged with the nut 150 to connect and fix the protective member 130 to the motor housing 111.

[0030] The motor body 110 includes a motor housing 111, a rotor, a stator, an internal bearing, and a rotating shaft 112. The rotor, stator, and internal bearing are all located inside the motor housing 111, and the rotating shaft 112 is connected to the rotor.

[0031] The dimensions of the external bearing 120 can be set based on the dimensions of the rotating shaft 112. The external bearing 120 includes an outer ring, an inner ring, and rolling elements. The rolling elements can be balls, which are used to support the motor rotating shaft 112 and reduce friction and wear.

[0032] Since the external bearing 120 and the rotating shaft 112 are both relatively small in size, compared with the external bearing 120 and the rotating shaft 112 being connected by welding, the external bearing 120 and the rotating shaft 112 of this application are connected by interference fit, which can ensure the stability of the connection between the external bearing 120 and the rotating shaft 112 and the stability of rotation.

[0033] To further ensure the stability of the external bearing 120 connection, the external bearing 120 is interference-fitted with the protective plate 131, and the protective plate 131 is connected and fixed to the motor housing 111 using threaded parts 140 and nuts 150. This means the protective part 130 effectively secures the external bearing 120. The protective part 132 is angled to the protective plate 131, forming a cover that covers the outside of the external bearing 120, preventing external dust and impurities from entering and thus protecting the external bearing 120. The external ball bearing is then installed onto the motor shaft 112. The protective part 130 is interference-fitted with the outer ring of the external bearing 120, and the threaded parts 140 and nuts 150 are used to fasten the protective part 130 to the motor housing 111. The protective part 130 thus provides both fixation and protection for the external bearing 120.

[0034] In some embodiments, by measuring the dimensions of the servo shaft 112 neck, for example, if the dimensions of the servo shaft 112 neck are 3mm, the dimensions of the external bearing 120 can be an inner diameter of 3mm and an outer diameter of 8mm, and the external bearing 120 can be a ball bearing. The inner diameter of the protective plate 131 is 8mm and the outer diameter is 12mm, ensuring that the center hole 134 of the protective plate 131 is interference-fitted with the outer ring of the external bearing 120.

[0035] Therefore, this application, by adding an external bearing 120 and a protective component 130 to the motor housing 111, can simply and effectively repair the motor, ensuring the normal rotation of the motor rotor and guaranteeing the normal operation of the automatic fluorescent inspection. It solves problems such as jamming caused by wear of the motor's internal bearings, stator-rotor friction, and winding short circuits, while avoiding the difficulties in repair due to insufficient professional tools and technical capabilities, and the high maintenance costs caused by replacing the entire motor. The installation structure of this application is simple and efficient, extending the motor's service life, reducing maintenance costs, and ensuring the timeliness of automatic sample inspection.

[0036] like Figure 1As shown, in some embodiments, the threaded component 140 is a screw or bolt, the first connecting hole 113 is a threaded hole, and the second connecting hole 133 is a through hole; the threaded component 140 passes through the second connecting hole 133 and the first connecting hole 113, and is connected and fixed by a nut 150. The threaded component 140 passes through the second connecting hole 133, and then is threadedly connected to the first connecting hole 113. The protective component 130 is then connected and fixed to the motor housing 111 by the cooperation of the threaded component 140 and the nut 150.

[0037] like Figure 3 and Figure 4 As shown, in some embodiments, the second connecting hole 133 is a notch opened circumferentially along the protective plate 131; the notch opened circumferentially on the protective plate 131 is the second connecting hole 133, which means that the circumference of the protective plate 131 can be ground to form a semi-circle, which is convenient for fixing and installation and is simple to operate. The opening of the second connecting hole 133 increases in size from the center of the central hole 134 to the circumferential direction; the threaded part 140 can be placed horizontally at the edge of the second connecting hole 133 directly from the notch and then abut against the edge of the second connecting hole 133. The threaded part 140 cooperates with the nut 150 to connect and fix the protective part 130 to the motor housing 111.

[0038] In some embodiments, the second connecting hole 133 is a circular hole arranged circumferentially along the protective plate 131. The circular hole can be formed by machining. The threaded part 140 can directly pass through the circular hole and, by cooperating with the nut 150, connect and fix the protective part 130 to the motor housing 111.

[0039] In some embodiments, the second connecting hole 133 is a notch formed circumferentially along the protective plate 131. The second connecting hole 133 is a semi-circular hole, and the arc surface of the second connecting hole 133 is opposite to the arc surface of the central hole 134. The threaded part 140 can be placed horizontally at the edge of the second connecting hole 133 directly from the notch and then abut against the edge of the second connecting hole 133. The threaded part 140, in conjunction with the nut 150, connects and fixes the protective member 130 to the motor housing 111. Thus, the notch is simpler to create than a circular hole.

[0040] In some embodiments, the protective plate 131 is sleeved on the outer ring of the external bearing 120, and the axial height between the upper end face of the protective plate and the upper end face of the outer ring of the external bearing is 0.3mm to 0.6mm. That is, the distance between the topmost part of the outer ring of the external bearing 120 and the protective plate 131 is 0.3mm to 0.6mm, and this distance can be 0.3mm, 0.4mm, 0.5mm, or 0.6mm. This ensures a tight fit between the external bearing 120 and the protective plate 131, reducing vibration and loosening of the external bearing 120 during operation and preventing misalignment. This improves the operational stability and reliability of the mechanical system.

[0041] In some embodiments, the protective plate 131 and the protective part 132 are integrally formed. Integrating the protective plate 131 and the protective part 132 into a single structure significantly improves protective performance, structural strength, and reliability. In some embodiments, both the protective plate 131 and the protective part 132 are made of stainless steel, which has excellent corrosion resistance, effectively preventing damage to the protective component 130 due to corrosion, thereby extending its service life.

[0042] like Figure 3 As shown, in some embodiments, the height of the protective part 132 is less than the height of the external bearing 120. The height of the protective part 132 is less than the height of the external bearing 120. This ensures that the protective part 132 can provide shielding and protection while avoiding spatial interference between the protective part 132 and the motor housing 111, thus ensuring the installation stability of the protective part 130 and the motor housing 111.

[0043] In some embodiments, the protective part 132 is perpendicular to the protective plate 131; the protective plate 131 and the protective part 132 together form a gate-like structure, which can provide a certain shielding and protection for the external bearing 120, preventing dust from entering the external bearing 120, thereby improving the service life of the external bearing 120.

[0044] In some embodiments, the protective plate 131 is a circular plate or a square plate; the central hole 134 is a circular hole adapted to the outer ring of the external bearing 120. This ensures an interference fit between the external bearing 120 and the central hole 134 of the protective plate 131, enabling stable operation under various working conditions, extending service life, and improving the overall system performance.

[0045] In some embodiments, there are four first connecting holes 113 and four second connecting holes 133, with the positions of the four first connecting holes 113 and the four second connecting holes 133 corresponding one-to-one. The four second connecting holes 133 are arranged in a circumferential array along the protective plate 131 to ensure circumferential installation. In other embodiments, there are two or three first connecting holes 113 and two connecting holes 133.

[0046] In a second aspect of this application, an electric motor is provided, including the motor mounting structure 100 described above. The specific structure of the motor mounting structure 100 is as described in the above embodiments. Since the motor adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0047] The specific steps for implementing the motor mounting structure 100 of this application are as follows:

[0048] 1. Measure the dimensions of the journal of the shaft 112: Use calipers to measure the diameter of the journal of the shaft 112 to ensure that the inner diameter of the external bearing 120 matches the journal.

[0049] 2. Prepare ball bearings and protective parts 130: Based on the measurement results, select ball bearings with an inner diameter of 3mm and an outer diameter of 8mm. Prepare protective parts 130 with an inner diameter of 8mm and an outer diameter of 12mm, and grind the four corners to form a semi-circular second connecting hole 133.

[0050] 3. Install external bearing 120: Install the ball bearing onto the motor shaft 112, ensuring that the bearing fits tightly with the shaft journal.

[0051] 4. Secure the protective component 130: Fit the protective component 130 onto the outer ring of the ball bearing, and use the threaded part 140 and nut 150 to fasten the protective component 130 to the motor housing 111. Ensure that the protective component 130 and the outer ring of the bearing have an interference fit, avoiding being too tight or too loose.

[0052] 5. Test Run: Start the servo motor and observe the operation of the external bearing 120 to ensure smooth and uninterrupted motor operation. Check the gripper's movement for proper functioning to ensure the sample inspection process proceeds smoothly.

[0053] 6. Working Process: When the automatic fluorescence analyzer controls the servo motor to run, the motor rotor drives the external ball bearing to rotate. The external bearing 120 drives the gripper to grasp the sample via a belt or coupling, realizing automatic inspection. The external bearing 120 shares the load of the motor shaft 112, reducing the wear of the internal bearing and ensuring smooth motor operation.

[0054] Through the above embodiments, this application has the following beneficial effects or advantages:

[0055] 1) Ensure normal operation of equipment: By adding an external bearing 120, the problems of jamming and friction caused by wear of the internal bearing in the motor were solved, ensuring the normal operation of the automatic fluorescence test and the timeliness of sample testing.

[0056] 2) Extended motor lifespan: The external bearing 120 distributes the load of the internal bearing, reducing wear and tear and preventing the servo motor from failing due to bearing wear, thus extending the motor's lifespan. This reduces the frequency of motor replacement, saves on spare parts procurement costs, and improves the stability and reliability of equipment operation.

[0057] 3) Reduced maintenance costs: This application eliminates the need to replace the entire motor; only an external bearing 120 and a fixed protective component 130 are added, significantly reducing equipment maintenance costs. It avoids the difficulties and high costs associated with repairs due to insufficient specialized tools and technical capabilities.

[0058] 4) Simple, efficient, and easy to promote: This application has a simple structure, is easy to install, and requires low technical skills from maintenance personnel, making it suitable for rapid on-site repairs. It can be extended to the repair of other precision small spare parts, providing innovative ideas for equipment maintenance and improving equipment maintenance efficiency.

[0059] 5) Reduced downtime: The installation of the external bearing 120 does not require disassembling the internal structure of the motor, and the repair process is quick, reducing equipment downtime and improving production efficiency.

[0060] 6) Promotional value: This application is not only applicable to the repair of the servo motor of the gripper of the automatic fluorescence instrument, but can also be extended to the repair of other precision small motors, and has broad promotional value.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0063] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor mounting structure, characterized in that, include: The motor body includes a motor housing and a rotating shaft, wherein the motor housing has a first connecting hole; An external bearing includes an outer ring, an inner ring, and rolling elements; the inner ring of the external bearing is fitted onto the rotating shaft and is interference-fitted with the rotating shaft. The protective component includes an angled protective part and a protective plate. The protective plate has a central hole, which is coaxially arranged with the external bearing. The protective plate is sleeved on the outer ring of the external bearing, and the protective plate and the outer ring of the external bearing are interference-fitted. Along the circumference of the protective component, the protective component has a second connecting hole corresponding to the position of the first connecting hole. The protective part extends to one side of the motor housing, and the protective part is spaced apart from the motor housing. A threaded component and a nut are provided, wherein the threaded component passes through the second connecting hole and the first connecting hole in sequence, and the threaded component and the nut are threadedly engaged to connect and fix the protective component to the motor housing.

2. The motor mounting structure according to claim 1, characterized in that, The threaded component is a screw or bolt, the first connecting hole is a threaded hole, and the second connecting hole is a through hole; the threaded component passes through the second connecting hole and the first connecting hole and is connected and fixed by a nut.

3. The motor mounting structure according to claim 1, characterized in that, The second connecting hole is a notch opened along the circumference of the protective plate; Alternatively, the second connecting hole is a circular hole arranged circumferentially along the protective plate.

4. The motor mounting structure according to claim 3, characterized in that, The second connecting hole is a notch opened along the circumference of the protective plate. The second connecting hole is a semi-circular hole, and the arc surface of the second connecting hole is opposite to the arc surface of the central hole.

5. The motor mounting structure according to any one of claims 1-4, characterized in that, The axial height between the upper end face of the protective plate and the upper end face of the outer ring of the external bearing is 0.3mm to 0.6mm.

6. The motor mounting structure according to claim 5, characterized in that, The protective plate and the protective part are integrally formed.

7. The motor mounting structure according to claim 6, characterized in that, The height of the protective part is less than the height of the external bearing.

8. The motor mounting structure according to claim 7, characterized in that, The protective part is perpendicular to the protective plate; And / or, the protective plate is a circular plate or a square plate; the central hole is a circular hole adapted to the outer ring of the external bearing.

9. The motor mounting structure according to any one of claims 1-4, characterized in that, There are four first connecting holes and four second connecting holes, and the positions of the four first connecting holes and the four second connecting holes correspond one-to-one.

10. An electric motor, characterized in that, include: The motor mounting structure according to any one of claims 1-9.

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