A tool for assembling motor bearing assembly

Abstract

The utility model discloses a tool for assembling a motor bearing assembly, aiming to provide a tool for assembling a motor bearing assembly that can facilitate the installation of the motor bearing assembly and improve the installation efficiency of the motor bearing assembly. It comprises: a sleeve, one end of which is provided with an adapter that matches with a pneumatic wrench or an electric wrench, and the other end of the sleeve is provided with a guide hole; a center roller, which is slidably arranged in the guide hole, and the inner hole of the center roller is a center threaded hole; a bearing sleeve, which is rotatably connected with the center roller, and the bearing sleeve is located outside the guide hole; a center screw, which passes through the center threaded hole and the bearing sleeve, and the center screw is connected to the center threaded hole by threads.

Description

Technical Field

[0001] The utility model relates to the field of motor assembly, in particular to a tool for assembling a motor bearing assembly. Background Art

[0002] In the assembly of medium- and large-sized motors, where large and heavy motors are difficult to transport, motor bearing assemblies (the bearing assembly between the motor shaft and the motor housing, which is sleeved onto the motor shaft) are typically assembled manually using tools such as hammers, cold pressing, or shrink-fitting. Due to the lack of dedicated installation tooling, the installation of bearing assemblies on the motor shafts of medium- and large-sized motors is currently inefficient, time-consuming, and labor-intensive, impacting motor assembly efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a motor bearing assembly assembly tool that can facilitate the installation of the motor bearing assembly and improve the installation efficiency of the motor bearing assembly.

[0004] The technical solution of the utility model is:

[0005] A tool for assembling a motor bearing assembly, comprising:

[0006] A sleeve, one end of which is provided with an adapter for matching with a pneumatic wrench or an electric wrench, and the other end of the sleeve is provided with a guide hole;

[0007] The center roller is slidably arranged in the guide hole, and the inner hole of the center roller is a center threaded hole;

[0008] The bearing pressing sleeve is rotatably connected to the center roller and is located outside the guide hole;

[0009] The center screw passes through the center threaded hole and the bearing sleeve, and the center screw is connected to the center threaded hole through a thread. The specific use of the motor bearing assembly tool of this solution is as follows:

[0010] First, place the motor bearing assembly in the motor preload position, and sleeve the motor bearing assembly onto the motor shaft;

[0011] Next, screw the center screw into the shaft screw hole on the end face of the motor shaft, and make the bearing press sleeve rest on the motor bearing assembly;

[0012] Next, match the pneumatic wrench or electric wrench with the adapter, and then turn on the pneumatic wrench or electric wrench to drive the adapter, sleeve and center roller to rotate. During the rotation of the center roller, the bearing sleeve and the center roller will be driven to move synchronously along the axial direction of the center screw, thereby pressing the motor bearing assembly onto the motor; this makes the installation of the motor bearing assembly convenient and improves the installation efficiency of the motor bearing assembly, which is beneficial to improving the assembly efficiency of medium and large motors.

[0013] Preferably, an annular gap is provided between the inner wall of the bearing sleeve and the central screw, the annular gap forming a channel for the motor shaft to extend into. Thus, when the bearing sleeve is press-fitting the motor bearing assembly onto the motor, the end of the motor shaft can extend into the channel between the inner wall of the bearing sleeve and the central screw, thereby ensuring that the motor bearing assembly is press-fitted into place.

[0014] Preferably, an annular press-fitting boss is provided on the end of the bearing sleeve facing away from the sleeve, the boss extending outwardly along the axial direction of the bearing sleeve. Thus, when the bearing sleeve is press-fitting the motor bearing assembly onto the motor, the bearing sleeve contacts the bearing of the motor bearing assembly via the boss, facilitating stable press-fitting of the bearing of the motor bearing assembly onto the motor shaft.

[0015] Preferably, the annular press-fitting boss protrudes outward from the end of the inner hole of the bearing sleeve. Thus, when the bearing sleeve is press-fitting the motor bearing assembly onto the motor, the bearing sleeve contacts the inner ring of the motor bearing assembly (which is sleeved onto the motor shaft) via the annular press-fitting boss, facilitating stable press-fitting of the bearing of the motor bearing assembly onto the motor shaft.

[0016] Preferably, an annular pressure plate is provided on the outer edge of the end of the bearing sleeve facing away from the sleeve, and the annular pressure plate extends radially outward from the bearing sleeve. During the process of press-fitting the motor bearing assembly onto the motor by the bearing sleeve, the annular pressure plate cooperates with the mounting cylinder of the motor bearing assembly to press-fit the mounting cylinder of the motor bearing assembly into the mounting hole of the motor housing.

[0017] Preferably, the surface of the annular pressure plate facing away from the sleeve is flush with an end surface of the bearing press sleeve facing away from the sleeve.

[0018] Preferably, the annular pressure plate is provided with a plurality of pressure plate through holes evenly distributed along the circumference. The pressure plate through holes on the annular pressure plate correspond one-to-one with the mounting holes on the flange at the end of the mounting cylinder of the motor bearing assembly. In this way, when installing the motor bearing assembly, the mounting holes on the flange at the end of the mounting cylinder are aligned with the screw holes on the motor housing by adjusting.

[0019] As preferably, the center roller can be moved out by the port of the guide hole. In this way, it is convenient to disassemble and assemble the sleeve and the center roller, and different sleeves can be replaced to cooperate with the center roller.

[0020] Preferably, the sleeve, the central screw and the central roller are coaxially distributed.

[0021] Preferably, the adapter and the sleeve are connected by threads or welding, or the adapter and the sleeve are integrally formed.

[0022] The beneficial effects of the utility model are that the installation of the motor bearing assembly is facilitated, the installation efficiency of the motor bearing assembly is improved, and thus it is beneficial to improve the assembly efficiency of medium-sized and medium-large motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a cross-sectional structural diagram of a tool for assembling a motor bearing assembly.

[0024] Figure 2 The utility model is a three-dimensional structural schematic diagram of a tool for assembling a motor bearing assembly.

[0025] Figure 3 The utility model is a partial cross-sectional structural schematic diagram of a tool for assembling a motor bearing assembly during actual use.

[0026] In the picture:

[0027] Sleeve 1, guide hole 1.1;

[0028] Bearing pressing sleeve 2, annular press-fitting boss 2.1, annular pressing plate 2.2, pressing plate through hole 2.3;

[0029] Center screw 3;

[0030] Adapter 4;

[0031] Center roller 5;

[0032] Channel 6;

[0033] Motor shaft 7, shaft screw hole 7.1;

[0034] Motor bearing assembly 8;

[0035] Motor housing 9. DETAILED DESCRIPTION

[0036] Specific embodiment 1, as Figure 1 、 Figure 2 As shown, a tool for assembling a motor bearing assembly includes a sleeve 1, a bearing pressing sleeve 2, a center screw 3 and a center roller 5.

[0037] One end of the sleeve 1 is provided with an adapter 4 for matching with a pneumatic wrench or an electric wrench. The other end of the sleeve 1 is provided with a guide hole 1.1. The sleeve 1 and the adapter 4 are coaxially distributed.

[0038] The central roller 5 is slidably arranged in the guide hole 1.1, and the central roller 5 and the guide hole 1.1 cannot rotate relative to each other. The inner hole of the central roller 5 is a central threaded hole, and the central threaded hole and the central roller 5 are coaxially distributed.

[0039] The bearing pressing sleeve 2 is rotatably connected to the central roller 5, and the bearing pressing sleeve 2 is located outside the guide hole 1.1.

[0040] The central screw rod 3 passes through the central threaded hole and the bearing pressing sleeve 2, and the central screw rod 3 is connected to the central threaded hole through threads.

[0041] The specific use of the motor bearing assembly tool of this embodiment is as follows:

[0042] like Figure 3 As shown, first, the motor bearing assembly 8 is placed in the motor pre-load position, and the motor bearing assembly is sleeved on the motor shaft 7;

[0043] Next, screw the center screw 3 into the shaft screw hole 7.1 on the end face of the motor shaft, and make the bearing sleeve 2 rest on the motor bearing assembly;

[0044] Next, the pneumatic wrench or electric wrench is matched with the adapter 4, and then the pneumatic wrench or electric wrench is turned on to drive the adapter 4, the sleeve 1 and the center roller 5 to rotate. During the rotation of the center roller 5, the bearing sleeve 2 and the center roller 5 will be driven to move synchronously along the axial direction of the center screw 3, and the motor bearing assembly will be pressed into the bearing mounting hole of the motor shaft 7 and the motor housing 9 through the bearing sleeve 2. At the same time, during the process of the bearing sleeve 2 pressing the motor bearing assembly into the motor, since the bearing sleeve 2 is rotationally connected to the center roller 5, the bearing sleeve 2 will not rotate. On the one hand, it can ensure the smooth press-fitting of the motor bearing assembly, and on the other hand, it can avoid relative rotation friction between the bearing sleeve 2 and the motor bearing assembly, which causes wear of the motor bearing assembly.

[0045] Compared with the prior art, which uses tools such as hammers to manually assemble bearing assemblies using cold pressing, shrink fitting, and other methods, which has the problem of low bearing installation efficiency, time-consuming and labor-intensive, and affects the efficiency of motor assembly; the motor bearing assembly is installed by using a tool for assembling motor bearing assemblies in this embodiment, which makes the installation of the motor bearing assembly convenient and improves the installation efficiency of the motor bearing assembly, thereby helping to improve the assembly efficiency of medium and large motors.

[0046] Specific embodiment 2, as Figure 1 、 Figure 2 As shown, a tool for assembling a motor bearing assembly includes a sleeve 1, a center roller 5, a bearing sleeve 2 and a center screw 3.

[0047] One end of the sleeve 1 is provided with an adapter 4 for mating with a pneumatic or electric wrench. The other end of the sleeve 1 is provided with a guide hole 1.1. The sleeve 1 and adapter 4 are coaxially arranged. The adapter 4 has a polygonal inner hole for mating with the output shaft of the pneumatic or electric wrench; alternatively, the adapter 4 has a protruding polygonal head for mating with the sleeve 1 of the pneumatic or electric wrench. In this embodiment, the adapter 4 has a polygonal inner hole for mating with the output shaft of the pneumatic or electric wrench.

[0048] The center roller 5 is slidably disposed within the guide hole 1.1, and the center roller 5 and the guide hole 1.1 are non-rotatable relative to each other. Specifically, the guide hole 1.1 is a polygonal hole, such as a square or a regular hexagon; the cross-section of the center roller 5 is also a polygonal hole, such as a square or a regular hexagon, corresponding to the guide hole 1.1. In this way, the center roller 5 can slide along the guide hole 1.1, but the center roller 5 and the guide hole 1.1 are non-rotatable relative to each other.

[0049] The inner hole of the center roller 5 is a center threaded hole, and the center threaded hole and the center roller 5 are coaxially distributed.

[0050] The bearing pressing sleeve 2 is rotatably connected to the central roller 5, and the bearing pressing sleeve 2 is located outside the guide hole 1.1. The bearing pressing sleeve 2 and the central roller 5 are coaxially distributed.

[0051] The central screw 3 passes through the central threaded hole and the bearing sleeve 2, and the central screw 3 is connected to the central threaded hole through a thread. The sleeve 1, the central screw 3 and the central roller 5 are coaxially distributed.

[0052] The specific use of the motor bearing assembly tool of this embodiment is as follows:

[0053] like Figure 3 As shown, first, the motor bearing assembly 8 is placed in the motor pre-load position, and the motor bearing assembly is sleeved on the motor shaft 7;

[0054] Next, screw the center screw 3 into the shaft screw hole 7.1 on the end face of the motor shaft, and make the bearing sleeve 2 rest on the motor bearing assembly;

[0055] Next, the pneumatic wrench or electric wrench is matched with the adapter 4, and then the pneumatic wrench or electric wrench is turned on to drive the adapter 4, the sleeve 1 and the center roller 5 to rotate. During the rotation of the center roller 5, the bearing sleeve 2 and the center roller 5 will be driven to move synchronously along the axial direction of the center screw 3, and the motor bearing assembly will be pressed into the bearing mounting hole of the motor shaft 7 and the motor housing 9 through the bearing sleeve 2. At the same time, during the process of the bearing sleeve 2 pressing the motor bearing assembly into the motor, since the bearing sleeve 2 is rotationally connected to the center roller 5, the bearing sleeve 2 will not rotate. On the one hand, it can ensure the smooth press-fitting of the motor bearing assembly, and on the other hand, it can avoid relative rotation friction between the bearing sleeve 2 and the motor bearing assembly, which causes wear of the motor bearing assembly.

[0056] Compared with the prior art, which uses tools such as hammers to manually assemble bearing assemblies using cold pressing, shrink fitting, and other methods, which has the problem of low bearing installation efficiency, time-consuming and labor-intensive, and affects the efficiency of motor assembly; the motor bearing assembly is installed by using a tool for assembling motor bearing assemblies in this embodiment, which makes the installation of the motor bearing assembly convenient and improves the installation efficiency of the motor bearing assembly, thereby helping to improve the assembly efficiency of medium and large motors.

[0057] In one implementation of this embodiment, the adapter 4 is connected to the sleeve 1 via threads, so that the adapter 4 and the sleeve 1 can be easily installed, removed, or replaced.

[0058] In another embodiment of the present invention, the adapter 4 is connected to the sleeve 1 by welding. In this way, the connection between the adapter 4 and the sleeve 1 is facilitated and the connection between the adapter 4 and the sleeve 1 is ensured to be stable.

[0059] In the third embodiment of the present invention, the adapter 4 is integrally formed with the sleeve 1. This facilitates the connection between the adapter 4 and the sleeve 1 and ensures a stable connection between the adapter 4 and the sleeve 1.

[0060] In this embodiment, the central roller 5 can be removed from the end of the guide hole 1.1. In this way, the sleeve 1 and the central roller 5 can be easily disassembled and assembled, and different sleeves 1 can be replaced to cooperate with the central roller 5.

[0061] Specific embodiment three, as Figure 1 、 Figure 2 As shown, a tool for assembling a motor bearing assembly includes a sleeve 1, a center roller 5, a bearing sleeve 2 and a center screw 3.

[0062] One end of the sleeve 1 is provided with an adapter 4 for mating with a pneumatic or electric wrench. The other end of the sleeve 1 is provided with a guide hole 1.1. The sleeve 1 and adapter 4 are coaxially arranged. The adapter 4 has a polygonal inner hole for mating with the output shaft of the pneumatic or electric wrench; alternatively, the adapter 4 has a protruding polygonal head for mating with the sleeve 1 of the pneumatic or electric wrench. In this embodiment, the adapter 4 has a polygonal inner hole for mating with the output shaft of the pneumatic or electric wrench.

[0063] The center roller 5 is slidably disposed within the guide hole 1.1, and the center roller 5 and the guide hole 1.1 are non-rotatable relative to each other. Specifically, the guide hole 1.1 is a polygonal hole, such as a square or a regular hexagon; the cross-section of the center roller 5 is also a polygonal hole, such as a square or a regular hexagon, corresponding to the guide hole 1.1. In this way, the center roller 5 can slide along the guide hole 1.1, but the center roller 5 and the guide hole 1.1 are non-rotatable relative to each other.

[0064] The inner hole of the center roller 5 is a center threaded hole, and the center threaded hole and the center roller 5 are coaxially distributed.

[0065] The bearing pressing sleeve 2 is rotatably connected to the central roller 5, and the bearing pressing sleeve 2 is located outside the guide hole 1.1. The bearing pressing sleeve 2 and the central roller 5 are coaxially distributed.

[0066] The central screw 3 passes through the central threaded hole and the bearing sleeve 2, and the central screw 3 is connected to the central threaded hole through a thread. The sleeve 1, the central screw 3 and the central roller 5 are coaxially distributed.

[0067] The specific use of the motor bearing assembly tool of this embodiment is as follows:

[0068] like Figure 3 As shown, first, the motor bearing assembly 8 is placed in the motor pre-load position, and the motor bearing assembly is sleeved on the motor shaft 7;

[0069] Next, screw the center screw 3 into the shaft screw hole 7.1 on the end face of the motor shaft, and make the bearing sleeve 2 rest on the motor bearing assembly;

[0070] Next, the pneumatic wrench or electric wrench is matched with the adapter 4, and then the pneumatic wrench or electric wrench is turned on to drive the adapter 4, the sleeve 1 and the center roller 5 to rotate. During the rotation of the center roller 5, the bearing sleeve 2 and the center roller 5 will be driven to move synchronously along the axial direction of the center screw 3, and the motor bearing assembly will be pressed into the bearing mounting hole of the motor shaft 7 and the motor housing 9 through the bearing sleeve 2. At the same time, during the process of the bearing sleeve 2 pressing the motor bearing assembly into the motor, since the bearing sleeve 2 is rotationally connected to the center roller 5, the bearing sleeve 2 will not rotate. On the one hand, it can ensure the smooth press-fitting of the motor bearing assembly, and on the other hand, it can avoid relative rotation friction between the bearing sleeve 2 and the motor bearing assembly, which causes wear of the motor bearing assembly.

[0071] Compared with the prior art, which uses tools such as hammers to manually assemble bearing assemblies using cold pressing, shrink fitting, and other methods, which has the problem of low bearing installation efficiency, time-consuming and labor-intensive, and affects the efficiency of motor assembly; the motor bearing assembly is installed by using a tool for assembling motor bearing assemblies in this embodiment, which makes the installation of the motor bearing assembly convenient and improves the installation efficiency of the motor bearing assembly, thereby helping to improve the assembly efficiency of medium and large motors.

[0072] In one implementation of this embodiment, the adapter 4 is connected to the sleeve 1 via threads, so that the adapter 4 and the sleeve 1 can be easily installed, removed, or replaced.

[0073] In another embodiment of the present invention, the adapter 4 is connected to the sleeve 1 by welding. In this way, the connection between the adapter 4 and the sleeve 1 is facilitated and the connection between the adapter 4 and the sleeve 1 is ensured to be stable.

[0074] In the third embodiment of the present invention, the adapter 4 is integrally formed with the sleeve 1. This facilitates the connection between the adapter 4 and the sleeve 1 and ensures a stable connection between the adapter 4 and the sleeve 1.

[0075] In this embodiment, the bearing sleeve 2 is rotatably connected to the center roller 5 via a bearing.

[0076] Further, such as Figure 1 As shown, the center roller 5 can be removed from the port of the guide hole 1.1. In this way, it is convenient to disassemble and assemble the sleeve 1 and the center roller 5, and different sleeves 1 can be replaced to cooperate with the center roller 5.

[0077] Further, such as Figure 1As shown, an annular gap is defined between the inner wall of the bearing sleeve 2 and the center screw 3, forming a channel 6 through which the motor shaft extends. During the process of press-fitting the motor bearing assembly onto the motor, the end of the motor shaft can extend into the channel between the inner wall of the bearing sleeve 2 and the center screw 3, ensuring that the bearing sleeve 2 can press-fit the motor bearing assembly into place. In this embodiment, the bearing sleeve 2 and the center screw 3 are coaxially arranged.

[0078] Further, such as Figure 1 As shown, an annular press-fitting boss 2.1 is provided on the end of the bearing sleeve 2 facing away from the sleeve 1. The annular press-fitting boss 2.1 extends outwardly along the axial direction of the bearing sleeve 2. In this way, when the bearing sleeve 2 is press-fitting the motor bearing assembly onto the motor, the bearing sleeve 2 will contact the bearing of the motor bearing assembly via the annular press-fitting boss 2.1, which is conducive to stably pressing the bearing of the motor bearing assembly onto the motor shaft and press-fitting it into place.

[0079] The annular press-fitting boss 2.1 protrudes outward from the end of the inner hole of the bearing sleeve 2. In this way, when the bearing sleeve 2 is press-fitting the motor bearing assembly onto the motor, the bearing sleeve 2 will contact the inner ring of the motor bearing assembly (the inner ring of the bearing is mounted on the motor shaft) through the annular press-fitting boss 2.1, which is conducive to stably pressing the bearing of the motor bearing assembly onto the motor shaft and press-fitting it into place.

[0080] Further, such as Figure 1 As shown, an annular pressure plate 2.2 is provided on the outer edge of the end of the bearing sleeve 2 facing away from the sleeve 1, and the annular pressure plate 2.2 extends radially outward from the bearing sleeve 2. In this embodiment, the surface of the annular pressure plate 2.2 facing away from the sleeve 1 is flush with the end face of the bearing sleeve 2 facing away from the sleeve 1. In the process of the bearing sleeve 2 pressing the motor bearing assembly onto the motor, the annular pressure plate 2.2 will cooperate with the mounting cylinder of the motor bearing assembly, and press the mounting cylinder of the motor bearing assembly into the mounting hole of the motor housing. In this way, in the process of the bearing sleeve 2 pressing the motor bearing assembly onto the motor, the annular pressure plate 2.1 can cooperate with the annular pressure plate 2.2, wherein the annular pressure plate 2.1 acts on the inner ring of the bearing of the motor bearing assembly, and the annular pressure plate 2.2 acts on the mounting cylinder of the motor bearing assembly, thereby stably and reliably pressing the bearing of the motor bearing assembly onto the motor shaft and pressing it into place.

[0081] Further, such as Figure 2 As shown, the annular pressure plate 2.2 is provided with a plurality of pressure plate through holes 2.3 evenly distributed around the circumference. The pressure plate through holes on the annular pressure plate 2.2 correspond one-to-one with the mounting holes on the flange at the end of the mounting cylinder of the motor bearing assembly. Thus, when installing the motor bearing assembly, the mounting holes on the flange at the end of the mounting cylinder are aligned with the screw holes on the motor housing by adjusting.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation of the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A tool for assembling a motor bearing assembly, characterized in that it comprises: A sleeve, one end of which is provided with an adapter for matching with a pneumatic wrench or an electric wrench, and the other end of the sleeve is provided with a guide hole; The center roller is slidably arranged in the guide hole, and the inner hole of the center roller is a center threaded hole; The bearing pressing sleeve is rotatably connected to the center roller, and the bearing pressing sleeve is located outside the guide hole; The center screw rod passes through the center threaded hole and the bearing sleeve, and the center screw rod is connected with the center threaded hole through threads.

2. The motor bearing assembly assembly tool according to claim 1, characterized in that: An annular gap is provided between the inner wall of the bearing sleeve and the central screw, and the annular gap forms a channel for the motor shaft to extend into.

3. The motor bearing assembly assembly tool according to claim 1, characterized in that: An annular press-fitting boss is arranged on one end of the bearing press sleeve which faces away from the sleeve, and the annular press-fitting boss extends outwardly along the axial direction of the bearing press sleeve.

4. The motor bearing assembly assembly tool according to claim 3, characterized in that: The annular press-fitting boss protrudes outward from the end of the inner hole of the bearing press sleeve.

5. A tool for assembling a motor bearing assembly according to claim 1, 2, 3 or 4, characterized in that: An annular pressing plate is provided on the outer edge of one end of the bearing pressing sleeve facing away from the sleeve, and the annular pressing plate extends outwardly in the radial direction of the bearing pressing sleeve.

6. The tooling for assembling a motor bearing assembly according to claim 5, characterized in that: The surface of the annular pressing plate facing away from the sleeve is flush with an end surface of the bearing pressing sleeve facing away from the sleeve.

7. The tooling for assembling a motor bearing assembly according to claim 6, characterized in that: The annular pressing plate is provided with a plurality of pressing plate through holes which are evenly distributed in the circumferential direction.

8. A tool for assembling a motor bearing assembly according to claim 1, 2, 3 or 4, characterized in that: The center roller can be moved out from the end of the guide hole.

9. A tool for assembling a motor bearing assembly according to claim 1, 2, 3 or 4, characterized in that: The sleeve, the central screw and the central roller are coaxially distributed.

10. A tool for assembling a motor bearing assembly according to claim 1, 2, 3 or 4, characterized in that: The adapter and the sleeve are connected by threads or welding, or the adapter and the sleeve are integrally formed.

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