Bearing dismounting device and bearing dismounting method

Abstract

The invention discloses a bearing dismounting device and a bearing dismounting method, and relates to the technical field of motor overhauling, the bearing dismounting device comprises a shell, the shell comprises a protective shell and a limiting shell, and the limiting shell is fixedly arranged at the bottom of the protective shell; and the pressure applying piece comprises a push rod and a baffle, the push rod is arranged at the top of the protective shell, and the baffle is arranged in the limiting shell and can stretch into the protective shell in a matched mode. The motor bearing dismounting device solves the problems that an existing motor bearing dismounting device is complex in operation and low in efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of motor maintenance, and in particular to a bearing removal device and a bearing removal method. Background Art

[0002] The removal of motor rotor bearings is usually due to bearing damage, severe wear or the need for regular maintenance and inspection. As a key component of the motor, the performance of the bearing directly affects the motor's operating efficiency and life. When the bearing fails, it may cause the motor to overheat, increase vibration or noise, or even cause more serious equipment damage. Therefore, timely removal and replacement of bearings is a necessary measure to ensure the normal operation of the motor and extend its service life.

[0003] However, when removing small motor bearings in power plants, the main problems that bearing removal equipment may face include operational complexity, low efficiency, the risk of damage to the bearings, and high operator skill requirements. These problems may cause the removal process to take a long time, increase maintenance costs, and may cause further damage to the bearings or other parts of the motor. Summary of the invention

[0004] In view of the above-mentioned problems of complicated operation and low efficiency in the existing motor bearing disassembly, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a bearing removal device and a bearing removal method, the purpose of which is to enable one person to easily replace and repair motor bearings.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a bearing removal device, which includes an outer shell, including a protective shell and a limiting shell, and the limiting shell is fixedly arranged at the bottom of the protective shell; a pressure piece, including a push rod and a baffle, the push rod is arranged at the top of the protective shell, the baffle is arranged in the limiting shell, and the baffle can cooperate to extend into the protective shell.

[0007] As a preferred solution of the bearing removal device of the present invention, the protective shell includes a shell and a top cover fixed on the top thereof, a storage space is opened in the shell; and observation holes are symmetrically opened on the outer wall of the shell.

[0008] As a preferred solution of the bearing removal device of the present invention, the bottom side wall of the shell is symmetrically provided with plug holes, and the plug holes and the observation holes are both connected to the storage space.

[0009] As a preferred solution of the bearing removal device of the present invention, a first spring is fixed to the middle of the inner wall of the top cover, and a lower pressure ring is also fixed to the end of the first spring, and the lower pressure ring coincides with the axis of the storage space.

[0010] As a preferred solution of the bearing removal device of the present invention, a through hole is opened in the middle of the lower pressure ring, and a stabilizing plate is symmetrically fixed on its outer wall, and the stabilizing plate can slide in the observation hole.

[0011] As a preferred solution of the bearing removal device of the present invention, the limit shell is symmetrically fixedly connected to the outer wall of the shell, and movable holes are symmetrically opened on the opposite side walls of the limit shell on both sides, and the movable holes correspond to the positions of the plug-in holes; symmetrical vertical plates are formed at the connection points of the limit shells on both sides, and a second spring is symmetrically fixed on the side of the vertical plate facing the movable hole.

[0012] As a preferred solution of the bearing removal device of the present invention, wherein: the inner wall at the top of the limit shell is symmetrically provided with embedded grooves, and a limit plate is symmetrically fixed on the top of the limit shell; the limit plate includes a control plate and plug posts symmetrically fixedly connected to its side walls, the plug posts are slidably inserted in the limit shell, and a clamping plate is also fixed at the end of the plug posts, and the clamping plate can be placed in the embedded groove; a third spring is fixed between the clamping plate and the bottom of the embedded groove, and a plurality of groups of arranged and fixed teeth are provided on the side of the clamping plate away from the plug posts.

[0013] As a preferred solution of the bearing removal device of the present invention, the push rod includes an outer wall with a threaded groove, a rotating cap is fixed on the top end, and the push rod is threadedly inserted in the top cover.

[0014] As a preferred solution of the bearing removal device of the present invention, the baffle plate can be symmetrically plugged into the movable hole and the plug-in hole, and tooth grooves are symmetrically provided on both sides of the top of the baffle plate, and the latch teeth can be plugged into the tooth grooves; an arc groove is provided in the middle of one end of the baffle plate inserted into the shell, the third spring is fixed to this end of the baffle plate, and a support plate is fixed to the other end.

[0015] In order to solve the above technical problems, the present invention also provides the following technical solutions: a bearing removal method, which is based on the above bearing removal device, and also includes first inserting one end of the motor rotor connected to the bearing into the outer shell; then, clamping the bearing between the outer shell and the lower pressure ring; finally, rotating the push rod, at which time the push rod will push the motor rotor center axis, the motor rotor is gradually pushed out of the outer shell, and the bearing is finally separated from the motor rotor center axis.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention forms a temporary storage space by cooperating with the baffle plate and the lower pressure ring to cover the bearing. When the bearing is removed, it can prevent the bearing from falling and causing further damage to the bearing. The push rod pushes the motor rotor center axis, which can reduce the operating steps, simplify the disassembly process, and improve the disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the bearing removal device of the present invention.

[0020] Figure 2 This is a schematic diagram of the outer shell structure of the bearing removal device of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the limiting shell of the bearing removal device of the present invention.

[0022] Figure 4 The figure is a schematic diagram of the push rod structure of the bearing removal device of the present invention.

[0023] Figure 5 This is a schematic diagram of the baffle structure of the bearing removal device of the present invention.

[0024] Figure 6 It is a schematic diagram of the action process of the bearing removal device of the present invention.

[0025] Figure 7 It is a logic diagram of the bearing removal method of the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1

[0031] Reference Figure 1 , which is the first embodiment of the present invention, provides a bearing removal device, which includes a housing 100, including a protective shell 101 and a limiting shell 102, and the limiting shell 102 is fixedly arranged at the bottom of the protective shell 101.

[0032] The protective shell 101 is a columnar metal shell as a whole and can be made of stainless steel. The limiting shell 102 is a plate-shaped metal shell and is fixedly connected to the outer wall of the bottom of the protective shell 101 .

[0033] Furthermore, a cylindrical groove is provided at the bottom of the protective shell 101 to accommodate the bearing that needs to be removed, and a through hole is also provided on the side wall of the limiting shell 102 to connect the external space with the interior of the protective shell 101 from the side.

[0034] The pressure member 200 includes a push rod 201 and a baffle 202 . The push rod 201 is disposed on the top of the protective shell 101 . The baffle 202 is disposed in the limiting shell 102 . The baffle 202 can cooperate and extend into the protective shell 101 .

[0035] The push rod 201 is a columnar threaded rod, which can be screwed into the top of the protective shell 101. When the push rod 201 is rotated, the length of the push rod 201 inserted into the protective shell 101 can be changed.

[0036] Furthermore, the baffle 202 is a metal rectangular plate, which can be symmetrically inserted into both sides of the limiting shell 102, and extend into the protective shell 101, and be clamped under the bearing.

[0037] Reference Figure 6 During use, the push rod 201 is rotated to push against the rotor center axis, so that the rotor center axis moves downward. Under the blocking effect of the baffle 202, the position of the bearing remains unchanged. As the push rod 201 is pushed forward, the bearing will be gradually removed.

[0038] Example 2

[0039] Reference Figure 1 to Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the protective shell 101 includes a shell 101a and a top cover 101b fixed on the top thereof, and a storage space A is opened in the shell 101a; and observation holes 101a-1 are symmetrically opened on the outer wall of the shell 101a.

[0040] Among them, the top cover 101b is welded to the top of the shell 101a, and a threaded hole is opened in the middle. The storage space A is cylindrical, and the staff can observe the situation in the storage space A through the observation hole 101a-1.

[0041] The bottom side wall of the shell 101a is also symmetrically provided with plugging holes 101a-2, and the plugging holes 101a-2 and the observation hole 101a-1 are both connected to the storage space A.

[0042] The plugging holes 101a-2 are symmetrically arranged on the housing 101a and are located below the observation hole 101a-1. The plugging holes 101a-2 can be seen through the observation hole 101a-1.

[0043] A first spring T1 is fixed to the middle of the inner wall of the top cover 101b, and a lower pressure ring 101c is also fixed to the end of the first spring T1. The lower pressure ring 101c coincides with the axis of the storage space A.

[0044] A through hole 101c-1 is opened in the middle of the lower pressure ring 101c, and a stabilizing plate 101c-2 is symmetrically fixed on its outer wall. The stabilizing plate 101c-2 can slide in the observation hole 101a-1.

[0045] In the initial state, the first spring T1 pushes the lower pressure ring 101c downward to be located above the plug hole 101a-2. When subjected to force, the lower pressure ring 101c will move upward, and the stabilizing plates 101c-2 on both sides can ensure the stability of the lower pressure ring 101c.

[0046] The limiting shells 102 are symmetrically fixedly connected to the outer wall of the housing 101a, and the opposite side walls of the limiting shells 102 on both sides are symmetrically provided with moving holes 102a, and the positions of the moving holes 102a and the plugging holes 101a-2 correspond to each other.

[0047] The plugging hole 101a-2 is in an arc shape in the housing 101a, and ends of the plugging holes 101a-2 in the arc shape on both sides are not interconnected.

[0048] A symmetrical vertical plate 102b is formed at the connection of the limiting shells 102 on both sides. The vertical plate 102b is in a rectangular block shape. A second spring T2 is symmetrically fixed to one side of the vertical plate 102b facing the moving hole 102a.

[0049] The inner wall at the top of the limiting shell 102 is symmetrically provided with embedded grooves 102 c , and a limiting plate 102 d is symmetrically fixed to the top of the limiting shell 102 .

[0050] The limiting plate 102d includes a control plate 102d-1 and a plug post 102d-2 symmetrically fixedly connected to its side wall. The plug post 102d-2 is slidably inserted into the limiting shell 102. A clamping plate 102d-3 is also fixed to the end of the plug post 102d-2. The clamping plate 102d-3 can be placed in the embedded groove 102c.

[0051] A third spring T3 is fixed between the clamping plate 102d-3 and the bottom of the embedded groove 102c, and a plurality of groups of clamping teeth 103d-3a are arranged and fixed on one side of the clamping plate 102d-3 away from the plug post 102d-2.

[0052] During use, in the initial state, the third spring T3 pushes the clamping plate 102d-3 downward, so that the clamping tooth 103d-3a is exposed from the embedded groove 102c and enters the movable hole 102a.

[0053] The push rod 201 includes an outer wall with a thread groove 201a, a top end of which is fixed with a rotating cap 201b, and the push rod 201 is threadedly inserted into the top cover 101b.

[0054] Among them, the outer wall of the rotating cap 201b is anti-slip treated. It should be noted that the side wall of the rotating cap 201b can also be provided with a through hole perpendicular to its axial direction, and a steel bar can be inserted into the through hole to further assist the push rod 201 in rotating and reduce the difficulty of rotation.

[0055] The baffle plate 202 can be symmetrically plugged into the moving hole 102a and the plugging hole 101a-2. Tooth grooves 202a are symmetrically provided on both sides of the top of the baffle plate 202, and the latch teeth 103d-3a can be plugged into the tooth grooves 202a.

[0056] An arc groove 202b is provided in the middle of one end of the baffle 202 inserted into the shell 101a, and the third spring T3 is fixed to this end of the baffle 202, and a support plate 202c is fixed to the other end. Through the natural expansion and contraction of the third spring T3, the baffle 202 can be controlled to automatically be inserted back into the shell 101a.

[0057] The remaining structures are the same as those of Example 1.

[0058] Example 3

[0059] Reference Figure 1 to Figure 7 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that it provides a bearing removal method, which is based on the bearing removal device in the above embodiment and also includes the following steps:

[0060] First, one end of the motor rotor connected with the bearing is inserted into the housing 100 .

[0061] Then, the bearing is clamped between the housing 100 and the lower pressure ring 101c.

[0062] Finally, the push rod 201 is rotated, and the push rod 201 pushes the motor rotor center shaft, and the motor rotor is gradually pushed out of the housing 100, and the bearing is finally separated from the motor rotor center shaft.

[0063] Compared with Example 2, specifically, when the device is not in use, the third spring T3 contracts, driving the two side baffles 202 to be inserted into the middle of the shell 101a. At this time, the third spring T3 is in a naturally straightened state, and the latch tooth 103d-3a is just completely inserted into the tooth groove 202a.

[0064] Furthermore, when the bearing needs to be removed, it is first necessary to lift the clamping plate 102d-3 upwards through the control plate 102d-1, and the clamping tooth 103d-3a will shrink into the embedded groove 102c to release the engagement with the tooth groove 202a. Then, the baffle 202 can be pulled outward, and then the control plate 102d-1 can be released to allow the clamping tooth 103d-3a to re-engage with the tooth groove 202a.

[0065] Furthermore, one end of the rotor with the bearing is extended into the housing 101a, and the rotor center axis passes through the through hole 101c-1. The upper end surface of the bearing abuts against the lower end surface of the lower pressure ring 101c, and the lower pressure ring 101c is slightly pushed up.

[0066] Furthermore, the control plate 102d-1 is lifted up again. Without the restriction of the latching teeth 103d-3a, the third spring T3 is reset, driving the baffle 202 to be inserted back into the housing 100, and the bearing is supported from below. At this time, the bearing is temporarily stored in the storage space A.

[0067] Furthermore, the push rod 201 is rotated and moves downward to push the rotor center shaft, while the bearing cannot move under the action of the baffle 202 and slides relative to the rotor center shaft, and the bearing is gradually peeled off from the rotor center shaft.

[0068] Furthermore, the disassembled bearing is clamped by the baffle 202 and the lower pressure ring 101c and will not fall out of the storage space A.

[0069] It should be noted that the lower pressure ring 101c and the first spring T1 connected to the top of the lower pressure ring 101c in this embodiment are optional components. In actual production, if it is necessary to reduce production costs, the lower pressure ring 101c and the first spring T1 can be discarded. This solution will not have any actual impact on bearing disassembly.

[0070] The present invention enables a single person to disassemble the bearing, and there is no need to consider the situation in which the bearing deviates from the axis of the rotor center shaft during the disassembly process, causing disassembly difficulties.

[0071] Furthermore, during the disassembly process, the baffle 202 will be fixed by the limiting plate 102d, so there is no need to worry about the baffle 202 slipping outwards and the rotor falling off due to excessive force.

[0072] The remaining structure is the same as that of Example 2.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A bearing removal device, characterized in that: include, The housing (100) comprises a protective shell (101) and a limiting shell (102), wherein the limiting shell (102) is fixedly arranged at the bottom of the protective shell (101); The pressure-applying member (200) comprises a push rod (201) and a baffle (202); the push rod (201) is arranged on the top of the protective shell (101); the baffle (202) is arranged in the limiting shell (102); and the baffle (202) can cooperate and extend into the protective shell (101).

2. The bearing removal device according to claim 1, characterized in that: The protective shell (101) comprises a shell (101a) and a top cover (101b) fixed on the top thereof, and a storage space (A) is provided in the shell (101a); The outer wall of the shell (101a) is symmetrically provided with observation holes (101a-1).

3. The bearing removal device according to claim 2, characterized in that: The bottom side wall of the shell (101a) is also symmetrically provided with plugging holes (101a-2), and the plugging holes (101a-2) and the observation hole (101a-1) are both connected to the storage space (A).

4. The bearing removal device according to claim 2 or 3, characterized in that: A first spring (T1) is fixed to the middle of the inner wall of the top cover (101b), and a lower pressure ring (101c) is also fixed to the end of the first spring (T1), and the lower pressure ring (101c) coincides with the axis of the storage space (A).

5. The bearing removal device according to claim 4, characterized in that: A through hole (101c-1) is provided in the middle of the lower pressure ring (101c), and a stabilizing plate (101c-2) is symmetrically fixed on the outer wall thereof. The stabilizing plate (101c-2) can slide in the observation hole (101a-1).

6. The bearing removal device according to claim 3, characterized in that: The limiting shell (102) is symmetrically fixedly connected to the outer wall of the housing (101a), and the opposite side walls of the limiting shell (102) on both sides are symmetrically provided with movable holes (102a), and the positions of the movable holes (102a) and the plugging holes (101a-2) correspond to each other; A symmetrical vertical plate (102b) is formed at the connection point of the limiting shells (102) on both sides, and a second spring (T2) is symmetrically fixed on one side of the vertical plate (102b) facing the moving hole (102a).

7. The bearing removal device according to claim 6, characterized in that: The inner wall at the top of the limiting shell (102) is symmetrically provided with embedded grooves (102c), and a limiting plate (102d) is symmetrically fixed to the top of the limiting shell (102); The limiting plate (102d) comprises a control plate (102d-1) and a plug post (102d-2) symmetrically fixedly connected to the side wall thereof, the plug post (102d-2) is slidably inserted in the limiting shell (102), and a clamping plate (102d-3) is also fixed to the end of the plug post (102d-2), and the clamping plate (102d-3) can be matched and placed in the embedded groove (102c); A third spring (T3) is fixed between the clamping plate (102d-3) and the bottom of the embedded groove (102c), and a plurality of groups of clamping teeth (103d-3a) are arranged and fixed on one side of the clamping plate (102d-3) away from the plug post (102d-2).

8. The bearing removal device according to claim 7, characterized in that: The push rod (201) comprises an outer wall provided with a thread groove (201a), a top end of which is fixed with a rotating cap (201b), and the push rod (201) is threadedly inserted into the top cover (101b).

9. The bearing removal device according to claim 7 or 8, characterized in that: The baffle (202) can be symmetrically inserted into the moving hole (102a) and the plugging hole (101a-2); tooth grooves (202a) are symmetrically provided on both sides of the top of the baffle (202); and the latch teeth (103d-3a) can be symmetrically inserted into the tooth grooves (202a); An arc groove (202b) is provided in the middle of one end of the baffle (202) inserted into the shell (101a), the third spring (T3) is fixed to the end of the baffle (202), and a support plate (202c) is fixed to the other end.

10. A bearing removal method, characterized in that: Based on the bearing removal device according to any one of claims 4 to 9, it also includes: First, insert one end of the motor rotor connected to the bearing into the housing (100); Then, the bearing is clamped between the housing (100) and the lower pressure ring (101c); Finally, the push rod (201) is rotated, and the push rod (201) pushes the motor rotor center shaft, and the motor rotor is gradually pushed out of the housing (100), and the bearing is finally separated from the motor rotor center shaft.

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