Bearing press-fitting device

Abstract

The embodiment of the invention provides a bearing press-fitting device. The bearing press-fitting device comprises an oil press, an upper pressing ring connected with the oil press, a metal disc located below the upper pressing ring and a flexible pressing sleeve located below the metal disc. Wherein a plurality of first mounting holes are formed in the flexible pressing sleeve, and the metal disc is inserted into the first mounting holes through a plurality of first screws to be connected with the flexible pressing sleeve. The metal disc is used for adjusting the flatness of the flexible pressing sleeve so that the flexible pressing sleeve can be parallel to the end face of the bearing. Therefore, by arranging the metal disc and the flexible pressing sleeve on the upper pressing ring of the oil press, the bearing press-fitting device can effectively ensure the assembly quality of the bearing, reduce the damage of the bearing and the strain of an inner hole in the press-fitting process, avoid the existence of impurities such as scrap iron and copper cuttings after the bearing is assembled, reduce the phenomena of abnormal wear and clamping stagnation of the bearing, and improve the service life of the bearing. The service life of the bearing is ensured and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor manufacturing, and in particular to a bearing press-fitting device. Background Art

[0002] With the continuous development of railway technology, the speed of trains is constantly increasing, and the overall performance requirements of locomotives are getting higher and higher. The traditional railway models in my country mainly include Dongfeng series diesel locomotives and Shaoshan series electric locomotives. These two series of DC locomotives still undertake very important tasks. Among them, motor bearings, as an important component of the locomotive, play an extremely important role in the normal operation of the locomotive. Motor bearings operate under high load and high temperature conditions for a long time. If the bearings are assembled by rigid press fitting, they may cause damage to the bearings, and the presence of impurities will seriously affect the normal operation of the bearings, causing bearing heating and vibration alarms, affecting the operation of the locomotive, and increasing the maintenance cost of the locomotive. Ensuring the quality of bearing assembly is the most critical technology, and any detail will affect the quality and safety of locomotive driving.

[0003] In traditional bearing assembly, it is usually frozen in an industrial refrigerator and then knocked with a copper rod to install the bearing into the motor, or directly pressed with an oil press. According to the manufacturing process, the traction motor bearing must be burr-free and highly clean during assembly. On the one hand, traditional rigid press-fitting is prone to bearing damage and the presence of impurities, and the bearing status cannot be detected after assembly, which poses certain safety hazards to the normal operation of the traction motor bearing. On the other hand, if the frozen assembly is required to go through multiple operations, the process is complicated and inefficient, which is not conducive to the assembly of traction motor bearings.

[0004] Generally speaking, the current bearing press-fitting devices are difficult to align by pressing or knocking, which can easily cause bearing damage and inner surface strain during press-fitting. In addition, iron or copper filings will be present inside the bearing after assembly, and there is a risk of wear and jamming when the bearing is running, posing a potential driving safety hazard. Summary of the invention

[0005] An embodiment of the present application provides a bearing press-fitting device, which is used to solve the problems raised in the above-mentioned background technology that the current bearing press-fitting device is difficult to align during press-fitting or knocking, which can easily cause bearing damage and inner hole surface strain during press-fitting, and that iron or copper filings will be present inside the bearing after assembly, which poses a risk of wear and jamming during operation of the bearing, posing a potential driving safety hazard.

[0006] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0007] The embodiment of the present invention provides a bearing press-fitting device, comprising an oil press, an upper press ring connected to the oil press, a metal plate located under the upper press ring, and a flexible press sleeve located under the metal plate;

[0008] The flexible pressing sleeve is provided with a plurality of first mounting holes, and the metal plate is connected to the flexible pressing sleeve by inserting the metal plate into the plurality of first mounting holes through a plurality of first screws;

[0009] The metal disk is used to adjust the flatness of the flexible sleeve so that the flexible sleeve is parallel to the end face of the bearing.

[0010] In this way, by arranging a metal plate and a flexible pressing sleeve on the upper pressing ring of the hydraulic press, the assembly quality of the bearing can be effectively guaranteed, the damage to the bearing and the strain on the inner hole during the pressing process can be reduced, and the service life of the bearing can be guaranteed.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] In a possible implementation, a plurality of second mounting holes are formed on the metal plate;

[0013] The plurality of second mounting holes correspond to the plurality of first mounting holes, and the plurality of first screws are passed through the plurality of second mounting holes and then inserted into the plurality of first mounting holes, so that the metal plate is connected to the flexible compression sleeve.

[0014] In this way, by setting the second mounting hole to correspond to the first mounting hole, the first screw can be smoothly inserted into the second mounting hole and then inserted into the first mounting hole, so that the metal plate is connected to the flexible pressing sleeve.

[0015] In a possible implementation, the flexible pressing sleeve has elastic deformation so that the flexible pressing sleeve contacts the end surface of the bearing.

[0016] In this way, setting up a flexible pressure sleeve can protect the bearing, reduce bearing damage caused by hard contact and inner hole surface strain of the motor, and provide a certain buffer during the bearing alignment process, thereby smoothly aligning it.

[0017] In a possible implementation, a plurality of third mounting holes are formed on the upper pressing ring, and the upper pressing ring is connected to the metal plate by inserting a plurality of second screws into the plurality of third mounting holes.

[0018] In this way, the third mounting hole is provided so that the second screw passes through the third mounting hole to connect the upper pressing ring to the metal plate.

[0019] In a possible implementation, a plurality of fourth mounting holes are further provided on the metal plate;

[0020] The plurality of fourth mounting holes correspond to the plurality of third mounting holes, and the plurality of second screws are passed through the plurality of third mounting holes and then inserted into the plurality of fourth mounting holes, so that the upper pressing ring is connected to the metal plate.

[0021] In this way, by setting the fourth mounting hole to correspond to the third mounting hole, the second screw can be smoothly inserted into the third mounting hole and then inserted into the fourth mounting hole, so that the upper pressing ring is connected to the metal plate.

[0022] In a possible implementation manner, the plurality of fourth mounting holes and the plurality of second mounting holes are arranged on the metal plate in an intervally distributed manner.

[0023] In this way, the fourth mounting holes and the second mounting holes are evenly spaced and arranged on the metal plate, so that the connection between the metal plate and the upper pressing ring located above the metal plate and the flexible pressing sleeve located below the metal plate is more stably.

[0024] In a possible implementation, a plurality of fifth mounting holes are further provided on the upper pressing ring;

[0025] The plurality of fifth mounting holes are located inside the plurality of third mounting holes;

[0026] The upper pressing ring is connected to the hydraulic press by inserting a plurality of third screws into a plurality of fifth mounting holes.

[0027] In this way, the fifth mounting hole is provided so that the third screw can pass through the fifth mounting hole to connect the upper pressing ring to the oil hydraulic press.

[0028] In a possible implementation, the first mounting hole, the fourth mounting hole, and the fifth mounting hole are countersunk holes;

[0029] The second mounting hole and the third mounting hole are through holes.

[0030] In this way, by setting the first mounting hole, the fourth mounting hole and the fifth mounting hole as countersunk holes and the second mounting hole and the third mounting hole as through holes, the connection of the entire device can be made tighter, further increasing the anti-seismic performance of the bearing press-fitting device.

[0031] In a possible implementation, the diameters of the upper pressing ring, the metal disk, and the flexible pressing sleeve are the same.

[0032] In this way, the upper pressing ring, the metal disc and the flexible pressing sleeve are arranged to have the same diameter, so that the upper pressing ring, the metal disc and the flexible pressing sleeve can be better adjusted with each other.

[0033] In one possible implementation, the metal disk is a cast iron alloy;

[0034] The flexible compression sleeve is made of nylon.

[0035] Thus, the metal disc is made of cast iron alloy, so that the metal disc has good shock absorption, wear resistance and corrosion resistance. The flexible sleeve is made of nylon, so that the flexible sleeve has a certain elastic deformation, which is beneficial to protecting the bearing.

[0036] An embodiment of the present invention provides a bearing press-fitting device, which includes an oil hydraulic press, an upper pressure ring connected to the oil hydraulic press, a metal plate located under the upper pressure ring, and a flexible pressure sleeve located under the metal plate. The flexible pressure sleeve is provided with a plurality of first mounting holes, and the metal plate is connected to the flexible pressure sleeve by inserting a plurality of first screws into the plurality of first mounting holes. The metal plate is used to adjust the flatness of the flexible pressure sleeve so that the flexible pressure sleeve is parallel to the end face of the bearing. In this way, the bearing press-fitting device can effectively ensure the assembly quality of the bearing by arranging the metal plate and the flexible pressure sleeve on the upper pressure ring of the oil hydraulic press, reduce the damage to the bearing and the strain on the inner hole during the press-fitting process, avoid the presence of impurities such as iron filings and copper filings in the bearing after assembly, reduce abnormal wear and jamming of the bearing, ensure the service life of the bearing, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A structural cross-sectional view of a bearing press-fitting device provided in one embodiment of the present invention;

[0039] Figure 2 A top view of the structure of a metal disk in a bearing press-fitting device provided in one embodiment of the present invention;

[0040] Figure 3 A structural cross-sectional view of section AA of a metal disk in a bearing press-fitting device provided in one embodiment of the present invention;

[0041] Figure 4 A top view of the structure of a flexible pressing sleeve in a bearing press-fitting device provided in one embodiment of the present invention;

[0042] Figure 5 A structural cross-sectional view of the cross section BB of the flexible pressing sleeve in the bearing press-fitting device provided in one embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 100-bearing press-fit device;

[0045] 200-Hydraulic press;

[0046] 210-third screw;

[0047] 300-upper pressure ring;

[0048] 310 - third mounting hole; 320 - second screw; 330 - fifth mounting hole;

[0049] 400-Metal plate;

[0050] 410 - second mounting hole; 420 - first screw; 430 - fourth mounting hole;

[0051] 500-flexible compression sleeve;

[0052] 510-first mounting hole. DETAILED DESCRIPTION

[0053] As described in the background technology, the current bearing press-fitting devices are difficult to align by pressing or knocking, which can easily cause bearing damage and inner surface strain during press-fitting. In addition, iron or copper filings will be present inside the bearing after assembly, and there is a risk of wear and jamming when the bearing is running, posing a potential driving safety hazard.

[0054] In view of the above technical problems, an embodiment of the present invention provides a bearing press-fitting device, which includes an oil hydraulic press, an upper pressure ring connected to the oil hydraulic press, a metal plate located under the upper pressure ring, and a flexible pressure sleeve located under the metal plate. The flexible pressure sleeve is provided with a plurality of first mounting holes, and the metal plate is connected to the flexible pressure sleeve by inserting a plurality of first screws into the plurality of first mounting holes. The metal plate is used to adjust the flatness of the flexible pressure sleeve so that the flexible pressure sleeve is parallel to the end face of the bearing. In this way, the bearing press-fitting device can effectively ensure the assembly quality of the bearing by arranging the metal plate and the flexible pressure sleeve on the upper pressure ring of the oil hydraulic press, reduce the damage to the bearing and the strain on the inner hole during the press-fitting process, avoid the presence of impurities such as iron filings and copper filings in the bearing after assembly, reduce abnormal wear and jamming of the bearing, ensure the service life of the bearing, and improve work efficiency.

[0055] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0056] At present, the bearing press-fitting device generally adopts two press-fitting methods when performing press-fitting. Among them, the first press-fitting method is to press-fit directly with an oil hydraulic press, and the second press-fitting method is to press-fit with a copper rod after freezing in an industrial refrigerator. Through these two press-fitting methods, the bearing can be pressed into the inner hole of the traction motor to ensure the normal operation of the traction motor.

[0057] However, the existing bearing press-fitting method has the following disadvantages:

[0058] 1. It is difficult to align the bearing by pressing or tapping it during press-fitting. If it is not completely aligned, the bearing may be crushed or the inner surface may be strained during press-fitting.

[0059] 2. When the installation method of using an industrial refrigerator to freeze and then knock with a copper rod is adopted, the bearing is large in size and the freezing time is relatively long. When the output is large, it is easy to have low efficiency and form a production bottleneck. In addition, during the warming process, the bearing's own temperature is lower than the temperature of the surrounding environment, and water droplets may condense on the bearing surface, which is easy to be contaminated with dust and iron filings on the bearing surface, making it difficult to ensure cleanliness.

[0060] 3. When using the installation method of pressing or copper rod tapping, some iron chips may be knocked off the bearing itself during the tapping process, and some copper chips may be dropped from the copper rod during the tapping process. After the bearing is assembled, the iron chips and copper chips are not easy to clean. The bearing may wear and stick during operation, posing certain driving safety hazards.

[0061] Therefore, in order to solve the above problems, an embodiment of the present invention provides a bearing press-fitting device 100, in which a metal plate 400 and a flexible press sleeve 500 are provided on the basis of an upper press ring 300 of an oil press 200, so as to provide a certain buffer during the alignment process of the bearing and extend the service life of the bearing. The specific structure of the bearing press-fitting device 100 provided in the embodiment of the present application is introduced below in conjunction with the accompanying drawings.

[0062] refer to Figure 1 The bearing press-fitting device 100 may include an oil press 200, an upper pressing ring 300, a metal disc 400, and a flexible pressing sleeve 500. The oil press 200 may be connected to the upper pressing ring 300, the metal disc 400 may be located below the upper pressing ring 300 and connected to the upper pressing ring 300, and the flexible pressing sleeve 500 may be located below the metal disc 400 and connected to the metal disc 400. In a possible implementation, the upper pressing ring 300, the metal disc 400, and the flexible pressing sleeve 500 may all be cylinders.

[0063] In the embodiment of the present application, a first mounting hole 510 may be provided on the flexible compression sleeve 500, wherein the metal disc 400 may be inserted into the first mounting hole 510 by means of a first screw 420, thereby connecting the metal disc 400 to the flexible compression sleeve 500. Exemplarily, the number of the first mounting holes 510 and the first screws 420 may be 6. Of course, in other embodiments, the number of the first mounting holes 510 and the first screws 420 may also be 4, 8 or more. In a possible implementation, the number of the first mounting holes 510 and the first screws 420 may be multiple, and in the present embodiment, the number of the first mounting holes 510 and the first screws 420 is not limited.

[0064] On the basis of the above embodiment, the metal disk 400 can adjust the flatness of the end face of the flexible pressing sleeve 500, so that the flexible pressing sleeve 500 is parallel to the end face of the bearing, thereby achieving automatic alignment when the bearing is pressed.

[0065] refer to Figure 1 , Figure 2 as well as Figure 3 In the specific implementation of this embodiment, a second mounting hole 410 may be provided on the metal plate 400. Exemplarily, the number of the second mounting holes 410 may be 6. Of course, in other embodiments, the number of the second mounting holes 410 may also be 4, 8 or more. In a possible implementation, the number of the second mounting holes 410 may be multiple. In this embodiment, the number of the second mounting holes 410 is not limited. Among them, the second mounting hole 410 may correspond to the first mounting hole 510, and the first screw 420 may be inserted into the second mounting hole 410 and then inserted into the first mounting hole 510, so that the metal plate 400 is connected to the flexible compression sleeve 500.

[0066] refer to Figure 1 as well as Figure 4 On the basis of the above embodiment, the flexible pressing sleeve 500 can have elastic deformation, so that the flexible pressing sleeve 500 contacts the end face of the bearing. In this way, the flexible pressing sleeve 500 has a certain buffer during the alignment process of the bearing, and then the alignment is smooth. In addition, the elastic deformation of the flexible pressing sleeve 500 can protect the bearing and reduce the bearing damage caused by hard contact and the inner hole surface strain of the motor.

[0067] Continue to refer Figure 1On the basis of the above embodiment, a third mounting hole 310 may be provided on the upper pressing ring 300, wherein the upper pressing ring 300 may be inserted into the third mounting hole 310 by a second screw 320, so that the upper pressing ring 300 is connected to the metal plate 400. Exemplarily, the number of the third mounting holes 310 and the second screws 320 may be 6. Of course, in other embodiments, the number of the third mounting holes 310 and the second screws 320 may also be 4, 8 or more. In a possible implementation, the number of the third mounting holes 310 and the second screws 320 may be multiple, and in this embodiment, the number of the third mounting holes 310 and the second screws 320 is not limited.

[0068] Continue to refer Figure 1 , Figure 2 as well as Figure 3 On the basis of the above embodiment, a fourth mounting hole 430 may be further provided on the metal disk 400. Exemplarily, the number of the fourth mounting holes 430 may be 6. Of course, in other embodiments, the number of the fourth mounting holes 430 may also be 4, 8 or more. In a possible implementation, the number of the fourth mounting holes 430 may be multiple, and in this embodiment, the number of the fourth mounting holes 430 is not limited. Among them, the fourth mounting hole 430 may correspond to the third mounting hole 310, and the second screw 320 may be inserted into the third mounting hole 310, and then inserted into the fourth mounting hole 430, so that the upper pressing ring 300 is connected to the metal disk 400.

[0069] Continue to refer Figure 2 On the basis of the above embodiment, a plurality of fourth mounting holes 430 and a plurality of second mounting holes 410 can be arranged at intervals on the metal plate 400. In the embodiment of the present application, from the top view of the metal plate 400, the six fourth mounting holes 430 and the six second mounting holes 410 can form a circle, and the distances from each fourth mounting hole 430 and each second mounting hole 410 to the center of the metal plate 400 are the same, and the fourth mounting holes 430 and the second mounting holes 410 are alternately and evenly distributed on the metal plate 400, so that the metal plate 400 is more stably connected to the upper pressing ring 300 located above the metal plate 400 and the flexible pressing sleeve 500 located below the metal plate 400.

[0070] Continue to refer Figure 1On the basis of the above embodiment, a fifth mounting hole 330 may be further provided on the upper pressing ring 300. The fifth mounting hole 330 may be located on the inner side of the third mounting hole 310. In a possible implementation, the upper pressing ring 300 may be inserted into the fifth mounting hole 330 by the third screw 210, so that the upper pressing ring 300 is connected to the hydraulic press 200. Exemplarily, the number of the fifth mounting hole 330 and the third screw 210 may be 6. Of course, in other embodiments, the number of the fifth mounting hole 330 and the third screw 210 may also be 4, 8 or more. In a possible implementation, the number of the fifth mounting hole 330 and the third screw 210 may be multiple. In this embodiment, the number of the fifth mounting hole 330 and the third screw 210 is not limited.

[0071] refer to Figure 1 , Figure 3 as well as Figure 5 On the basis of the above embodiment, the first mounting hole 510, the fourth mounting hole 430 and the fifth mounting hole 330 can be set as countersunk holes. Correspondingly, the second mounting hole 410 and the third mounting hole 310 can be set as through holes. In this way, the metal plate 400 can be penetrated in the second mounting hole 410 by the first screw 420, and then inserted in the first mounting hole 510, so that the metal plate 400 is connected to the flexible pressing sleeve 500. The upper pressing ring 300 can be penetrated in the third mounting hole 310 by the second screw 320, and then inserted in the fourth mounting hole 430, so that the upper pressing ring 300 is connected to the metal plate 400. In addition, the setting of the countersunk hole can play a fastening role, further increasing the anti-seismic performance of the bearing press-fitting device 100.

[0072] Continue to refer Figure 1 On the basis of the above embodiment, the diameters of the upper pressing ring 300, the metal disc 400 and the flexible pressing sleeve 500 are the same. In this way, it is convenient to better adjust the upper pressing ring 300, the metal disc 400 and the flexible pressing sleeve 500. In a possible implementation, the diameters of the upper pressing ring 300, the metal disc 400 and the flexible pressing sleeve 500 can be 400mm, the height of the metal disc 400 can be 110mm, the height of the flexible pressing sleeve 500 can be 50mm, the diameter of the first screw 420 can be 12mm, the length of the first screw 420 can be 120mm, the diameter of the second screw 320 can be 12mm, and the length of the second screw 320 can be 70mm. From a top view, the distance between the two diagonal first mounting holes 510, the second mounting hole 410, the third mounting hole 310 and the fourth mounting hole 430 can be 250mm.

[0073] On the basis of the above embodiment, the metal disk 400 may be a disk made of Q235-A cast iron alloy. Cast iron has good shock absorption, wear resistance and corrosion resistance, and can enhance the anti-seismic performance of the bearing press-fitting device 100. In addition, the flexible press sleeve 500 may be a press sleeve made of nylon material. Nylon material is relatively soft and has a certain elastic deformation, which is conducive to protecting the bearing and reducing bearing damage caused by hard contact and inner hole surface strain of the motor.

[0074] In the embodiment of the present application, the entire bearing press-fitting device 100 adopts a split structure, and the upper pressure ring 300, the metal plate 400 and the flexible pressure sleeve 500 can be installed and fixed separately, which is convenient for the later replacement of the flexible pressure sleeve 500 and always maintains a good flatness of the press-fitting surface. In a possible implementation, the installation sequence of the bearing press-fitting device 100 can be to first connect the metal plate 400 and the flexible pressure sleeve 500 through the first screw 420, and fine-tune the flatness of the flexible pressure sleeve 500 during the connection process, so that the flexible pressure sleeve 500 is parallel to the work surface; and then connect the metal plate 400 and the flexible pressure sleeve 500 as a whole to the upper pressure ring 300 through the second screw 320 to complete the installation and fixation of the bearing press-fitting device 100.

[0075] In the embodiment of the present application, a bearing press-fitting device 100 is provided to ensure flexible alignment during the bearing press-fitting, facilitate press-fitting, and ensure assembly quality. In addition, since unnecessary collision damage to the bearing is avoided, the waiting time wasted during the bearing assembly is reduced, the process is effectively shortened to form a streamlined operation, and work efficiency is improved. At the same time, the bearing assembly quality is guaranteed, bearing damage and inner hole strain are prevented, and there are no impurities such as iron filings and copper filings after the bearing is assembled, which reduces the risk of bearing seizure and ensures the bearing life.

[0076] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0077] It should be noted that the phrases "in specific implementation", "in some embodiments", "in this embodiment", "exemplarily" and the like mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0078] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0079] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0080] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0081] Finally, 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bearing press-fitting device, characterized in that: It includes an oil press, an upper pressing ring connected to the oil press, a metal plate located under the upper pressing ring, and a flexible pressing sleeve located under the metal plate; The flexible pressing sleeve is provided with a plurality of first mounting holes, and the metal plate is connected to the flexible pressing sleeve by inserting a plurality of first screws into the plurality of first mounting holes; The metal plate is used to adjust the flatness of the flexible pressing sleeve so that the flexible pressing sleeve is parallel to the end surface of the bearing.

2. The bearing press-fitting device according to claim 1, characterized in that: The metal plate is provided with a plurality of second mounting holes; The plurality of second mounting holes correspond to the plurality of first mounting holes, and the plurality of first screws are passed through the plurality of second mounting holes and then inserted into the plurality of first mounting holes, so that the metal plate is connected to the flexible compression sleeve.

3. The bearing press-fitting device according to claim 2, characterized in that: The flexible pressing sleeve has elastic deformation so that the flexible pressing sleeve contacts the end surface of the bearing.

4. The bearing press-fitting device according to claim 3, characterized in that: The upper pressing ring is provided with a plurality of third mounting holes, and the upper pressing ring is connected to the metal plate by inserting a plurality of second screws into the plurality of third mounting holes.

5. The bearing press-fitting device according to claim 4, characterized in that: The metal plate is also provided with a plurality of fourth mounting holes; The plurality of fourth mounting holes correspond to the plurality of third mounting holes, and the plurality of second screws are passed through the plurality of third mounting holes and then inserted into the plurality of fourth mounting holes, so that the upper pressure ring is connected to the metal plate.

6. The bearing press-fitting device according to claim 5, characterized in that: The plurality of fourth mounting holes and the plurality of second mounting holes are arranged on the metal plate in an intervally distributed manner.

7. The bearing press-fitting device according to claim 6, characterized in that: The upper pressure ring is also provided with a plurality of fifth mounting holes; The plurality of fifth mounting holes are located inside the plurality of third mounting holes; The upper pressure ring is connected to the hydraulic press by inserting a plurality of third screws into a plurality of fifth mounting holes.

8. The bearing press-fitting device according to claim 7, characterized in that: The first mounting hole, the fourth mounting hole and the fifth mounting hole are countersunk holes; The second mounting hole and the third mounting hole are through holes.

9. The bearing press-fitting device according to claim 4, characterized in that: The upper pressing ring, the metal disc and the flexible pressing sleeve have the same diameter.

10. The bearing press-fitting device according to any one of claims 1 to 9, characterized in that: The metal disc is a cast iron alloy; The flexible compression sleeve is made of nylon.

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