Bearing fixing device capable of preventing steel balls from falling off

Abstract

The utility model discloses a bearing fixing device for preventing a steel ball from falling off, which comprises a pressing plate, a protective cap, the steel ball, a bearing, a base, a support sleeve and a centering rod, a connecting hole matched with the centering rod is arranged at the bottom of the pressing plate, and an axial through hole matched with the centering rod is arranged in the bearing; a plurality of supporting holes matched with the steel balls are formed in the protective cap, the protective cap is arranged at the bottom of the pressing plate and is in contact connection with the outer side face of the pressing plate, the steel balls are arranged in the supporting holes in the protective cap and are in contact connection with the pressing plate, the bearing is arranged below the pressing plate through the base, and a supporting sleeve is arranged on the outer side of the base. The centering rod sequentially penetrates through the base and the bearing from bottom to top and is connected with the pressing plate through the connecting hole. The bearing fixing device not only can prevent the steel balls from falling off in the rolling and closing process, but also can improve the machining efficiency and effectively reduce the machining cost, and is simple in overall structure, convenient to operate and suitable for popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a bearing fixing device for preventing steel balls from falling off. Background Art

[0002] Among mechanical parts, bearings are an indispensable standard part, which is used to fix shafts and support mechanical rotation. Since aircraft landing gear is a rotating machine with steering, it is inevitable to encounter parts that need to be installed with bearings during the production process, which requires the use of bearing fixing devices to complete the installation and fixation of bearings. Figure 1 As shown, it is the bearing fixing device currently used. When the existing bearing fixing device is used to install parts without special grooves on the parts, it is necessary to use steel balls for annular rolling and closing. During the rolling process, the steel balls are prone to offset problems, which can easily cause uneven rolling and deformation of the closing, and cannot meet the design requirements and guarantee product quality. In the processing process, it is not only time-consuming and labor-intensive, resulting in low processing efficiency, but in severe cases, it is also easy to cause the steel balls to fly out, posing a great safety hazard. Therefore, in order to meet batch processing, improve processing efficiency, and reduce safety hazards, it is necessary to improve the existing fixing device, so as to provide a bearing fixing device that prevents steel balls from falling off, so as to meet actual processing needs and ensure that the quality of the processed products meets the use requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is to address the problems existing in the background technology, thereby providing a bearing fixing device with a simple structure and easy operation. The bearing fixing device can not only prevent the steel balls from falling off during the rolling and closing process, thereby reducing safety hazards, but also greatly improve its processing efficiency and effectively reduce processing costs, thereby meeting the needs of bearing closing processing of various different specifications. Specifically, it is a bearing fixing device that prevents steel balls from falling off.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bearing fixing device for preventing steel balls from falling off, comprising a pressure plate, a protective cap, steel balls, bearings, a base, a support sleeve and a centering rod, a connecting hole matching the centering rod is provided at the bottom of the pressure plate, and an axial through hole matching the centering rod is provided in the bearing; a plurality of supporting holes matching the steel balls are provided in the protective cap, the protective cap is arranged at the bottom of the pressure plate and is in contact and connected with the outer side surface of the pressure plate, the steel balls are arranged in the supporting holes in the protective cap and are in contact and connected with the pressure plate, the bearing is arranged below the pressure plate through the base, a support sleeve is provided on the outer side of the base, the centering rod passes through the base and the bearing in sequence from bottom to top, and is connected to the pressure plate through the connecting hole.

[0005] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein an inwardly recessed accommodating cavity is provided at the bottom of the pressure plate, the connecting hole is arranged at the center position of the accommodating cavity, a supporting portion is formed between the accommodating cavity and the outer side surface of the pressure plate, a plurality of steel ball holes corresponding to the supporting holes are provided at the bottom of the supporting portion, the steel ball holes can accommodate the steel balls, the steel balls located in the protective cap are in contact and connected with the pressure plate through the steel ball holes; and an outwardly protruding power connecting column is also provided at the top of the pressure plate; and the protective cap arranged at the bottom of the pressure plate is in contact and connected with the supporting portion.

[0006] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein the protective cap is arranged as a cylindrical structure, a guide hole corresponding to the accommodating cavity is provided at the bottom of the protective cap, and a supporting protrusion corresponding to the accommodating cavity is provided at the guide hole; wherein, a plurality of supporting holes in the protective cap are arranged in a ring shape at the bottom of the protective cap, and the steel ball holes are arranged in a ring shape at the bottom of the supporting part and correspond to the supporting holes.

[0007] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted in the utility model, wherein the base is arranged in a cylindrical structure, the center of the base has a through hole matching the centering rod, and the top of the base is provided with a groove cavity communicating with the through hole; the support sleeve is placed on the outside of the base, and the height of the base is greater than the height of the support sleeve.

[0008] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein the support sleeve is arranged in a circular ring structure, the center of the support sleeve has a through hole matching the base, and an internal thread is provided in the through hole of the support sleeve, and an external thread matching the internal thread is provided on the outer side surface of the base, the support sleeve is connected to the base by means of threads, and a support ear extending outward is provided on the top of the support sleeve.

[0009] Furthermore, the bearing fixing device for preventing steel balls from falling off described in the utility model is adopted, the centering rod is arranged in a cylindrical structure, and a connecting portion matching the connecting hole is provided on the top of the centering rod.

[0010] Compared with the existing bearing fixing devices, the bearing fixing device for preventing steel balls from falling off described in the utility model has the following advantages:

[0011] 1. With the added protective cap, the steel balls will not fall off, deflect or bounce off during the rolling process, which not only meets the use requirements, but also improves the product processing quality, avoids uneven rolling and deformation of the closing parts, and avoids safety hazards. In addition, there is no need to load the steel balls multiple times. By loading the steel balls once, the product can be processed quickly, which has the advantages of saving time and effort, greatly reducing the work intensity of workers, and the operation process is simple and convenient.

[0012] 2. By setting a plurality of steel ball holes on the pressure plate and setting the centering rod and the pressure plate as a separable structure, the closing processing of bearings of various specifications can be achieved.

[0013] 3. Change the base and the support sleeve to a connection structure with threaded fit. In this way, when processing bearings of different specifications, there is no need to configure multiple support sleeves of different specifications, so as to ensure that the bearing will not fall off during the rolling process. By adjusting the depth of the thread, the relative height between the base and the support sleeve can be adjusted, which is convenient for supporting different shell parts to be assembled.

[0014] To sum up, the bearing fixing device described in the utility model can not only prevent the steel balls from falling off during the rolling and closing process and reduce safety hazards, but also greatly improve its processing efficiency and effectively reduce processing costs, thereby meeting the needs of bearing closing processing of various specifications. Its overall structure is simple, the operation is convenient, and it is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the structure of an existing bearing fixing device;

[0017] Figure 2 This is a structural schematic diagram of the bearing fixing device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the bearing fixing device of the utility model in use;

[0019] Figure 4 It is a structural schematic diagram of the pressing plate described in the utility model;

[0020] Figure 5 for Figure 4 Schematic diagram of the AA section structure;

[0021] Figure 6 It is a structural schematic diagram of the protective cap described in the utility model;

[0022] Figure 7 for Figure 6Schematic diagram of the cross-section structure along the BB axis;

[0023] Figure 8 It is a structural schematic diagram of the base described in the utility model;

[0024] Fig. 9 It is a structural schematic diagram of the support sleeve described in the utility model;

[0025] Fig.10 It is a structural schematic diagram of the centering rod described in the utility model.

[0026] As shown in the figure: 1-pressure plate, 11-connecting hole, 12-accommodating cavity, 13-support part, 14-steel ball hole, 15-power connecting column, 2-protective cap, 21-support hole, 22-guide hole, 23-support flange, 3-steel ball, 4-bearing, 5-base, 51-groove cavity, 6-support sleeve, 61-support lifting ear, 7-centering rod, 71-connecting part, 8-shell parts. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of the relative relationship, without substantial change in the technical content, should also be regarded as the scope of the implementation of the utility model.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that the term "comprise" or any other variation is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus. Example 1

[0031] like Figures 2 to 10 As shown, a bearing fixing device for preventing steel balls from falling off described in this embodiment includes a pressure plate 1, a protective cap 2, a steel ball 3, a bearing 4, a base 5, a support sleeve 6 and a centering rod 7. A connecting hole 11 matching the centering rod 7 is provided at the bottom of the pressure plate 1, and an axial through hole 41 matching the centering rod 7 is provided in the bearing 4; a plurality of supporting holes 21 matching the steel ball 3 are provided in the protective cap 2, the protective cap 2 is arranged at the bottom of the pressure plate 1, and is in contact and connected with the outer side surface of the pressure plate 1, the steel ball 3 is arranged in the supporting hole 21 in the protective cap 2, and is in contact and connected with the pressure plate 1, the bearing 4 is arranged below the pressure plate 1 through the base 5, and a support sleeve 6 is provided on the outer side of the base 5, the centering rod 7 passes through the base 5 and the bearing 4 from bottom to top in sequence, and is connected to the pressure plate 1 through the connecting hole 11.

[0032] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein an inwardly recessed accommodating cavity 12 is provided at the bottom of the pressure plate 1, and the connecting hole 11 is arranged at the center position of the accommodating cavity 12, and a supporting portion 13 is formed between the accommodating cavity 12 and the outer side surface of the pressure plate 1, and a plurality of steel ball holes 14 corresponding to the supporting holes 21 are provided at the bottom of the supporting portion 13, and the steel ball holes 14 can accommodate the steel balls 3, and the steel balls 3 located in the protective cap 2 are contacted and connected with the pressure plate 1 through the steel ball holes 14; and an outwardly protruding power connecting column 15 is also provided at the top of the pressure plate 1; and the protective cap 2 arranged at the bottom of the pressure plate 1 is contacted and connected with the supporting portion 13.

[0033] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein the protective cap 2 is configured as a cylindrical structure, and a guide hole 22 corresponding to the accommodating cavity 12 is provided at the bottom of the protective cap 2, and a supporting protrusion 23 corresponding to the accommodating cavity 12 is provided at the guide hole 22; wherein, a plurality of supporting holes 21 located in the protective cap 2 are arranged in a ring shape at the bottom of the protective cap 2, and the steel ball hole 14 is arranged in a ring shape at the bottom of the supporting portion 13 and corresponds to the supporting hole 21.

[0034] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein the base 5 is arranged in a cylindrical structure, the center of the base 5 has a through hole matching the centering rod 7, and a groove cavity 51 communicating with the through hole is provided on the top of the base 5; the support sleeve 6 is placed on the outside of the base 5, and the height of the base 5 is greater than the height of the support sleeve 6.

[0035] Furthermore, a bearing fixing device for preventing steel balls from falling off is adopted as described in the utility model, wherein the support sleeve 6 is arranged in a circular ring structure, the center of the support sleeve 6 has a through hole matching the base 5, and an internal thread is provided in the through hole of the support sleeve 6, and an external thread matching the internal thread is provided on the outer side surface of the base 5, the support sleeve 6 is connected to the base 5 by a threaded manner, and a support ear 61 extending outward is provided on the top of the support sleeve 6.

[0036] Furthermore, the bearing fixing device for preventing steel balls from falling off described in the utility model is adopted, the centering rod 7 is arranged in a cylindrical structure, and a connecting portion 71 matching the connecting hole 11 is provided on the top of the centering rod 7 . Example 2

[0037] This embodiment is based on the embodiment 1. In order to facilitate the connection between the support sleeve 6 and the base 5, an internal thread is provided in the through hole of the support sleeve 6, and an external thread matching the internal thread is provided on the outer side of the base 5. The support sleeve 6 and the base 5 are connected by a threaded manner. At the same time, a support ear 61 extending outward is provided on the top of the support sleeve 6. By providing the support ear 61 in the support sleeve 6 and the threaded connection between the support sleeve 6 and the base 5, it is not necessary to configure multiple support sleeves of different specifications when processing bearings 4 of different specifications. The support ear 61 is used to support the parts 8 waiting to be assembled, thereby ensuring that the steel ball 3 does not fall off from the top of the bearing 4 during the rolling process. The relative height between the base 5 and the support sleeve 6 can also be adjusted by adjusting the screw-in depth of the thread, so as to facilitate adjustment and control. In addition, a connecting portion 71 matching the connecting hole 11 is provided on the top of the centering rod 7. The connecting portion 71 is used to facilitate the connection between the centering rod 7 and the pressure plate 1.

[0038] The bearing fixing device described in the utility model has the following working principle: taking the HB0-37-1 bearing fixing method as an example, firstly, the bearing 4 needs to be pressed into the housing part 8 to be assembled, and then fixed in the three-claw chuck on the vertical rotating device, and then the base 5 is placed on the vertical rotating device, and the base 5 is adjusted, and the plane on the base 5 is leveled. After adjusting the structure, the support sleeve 6 is screwed into the base 5, and the protrusion of the support sleeve 6 is adjusted, so that the bearing 4 is fixed in the housing part 8 to prevent the bearing 4 from falling off during the rolling closing process. Finally, the steel ball 3 is installed in the pressing plate 1. Since a plurality of steel ball holes 14 are provided on the support part 13 in the pressing plate 1, it can be used for closing bearings 4 of multiple specifications. Before installing the steel ball 3, lubricant is first applied in the steel ball hole 14, and then the steel ball 3 is installed in the steel ball hole 14, and finally the protective cap 2 is set at the bottom of the pressing plate 1. In the actual application process, in order to prevent the protective cap 2 from sliding, a corresponding connecting screw hole is also set between the protective cap 2 and the pressing plate 1, and the screw is passed through the connecting screw hole in the protective cap 2 to fix the pressing plate 1, so that the problem of relative sliding during the rolling process can be avoided. Since this connection method is a common connection, it is not described in detail. At the same time, it is required that the steel ball 3 loaded into the steel ball hole 14 is located in the support hole 21 in the protective cap 2, so as to support and limit the loaded steel ball 3. After the installation of the protective cap 2 is completed, the centering rod 7 is passed through the base 5 and the bearing 4 from the bottom to the top from the centering rod 7, and connected to the pressing plate 1 through the connecting hole 11. For bearings 4 with different shaft diameters, centering rods 7 of different specifications can be used for connection. Finally, the assembled bearing fixing device is clamped on the vertical rotating equipment using the power connecting column 15 on the top of the pressing plate 1, and the equipment is started to rotate at a low speed. The bearing closing process can be completed by adjusting the rolling depth through the vertical rotating equipment.

[0039] It can be seen that by adopting the bearing fixing device described in the utility model, through the added protective cap 2, during the rolling and closing process, the steel ball 3 will not fall off, deviate or bounce off, etc., which not only meets the use requirements, but also improves the product processing quality, avoids the problem of uneven rolling and closing parts, and the problem of closing deformation, and can also avoid safety hazards. In addition, there is no need to load the steel ball 3 multiple times. By loading the steel ball 3 once, the product can be quickly processed, which has the advantages of saving time and labor, greatly reducing the work intensity of workers, and the operation process is simple and convenient. By setting multiple steel ball holes on the pressing plate 1 and setting the centering rod and the pressing plate as a detachable structure, the closing processing of bearings of various specifications can be realized. The base and the support sleeve are changed to a connection structure matched by threads, so that when processing bearings of different specifications, it is not necessary to configure multiple support sleeves of different specifications, so as to ensure the problem of bearing falling off during rolling, and by adjusting the screw-in depth of the thread, it is convenient to adjust the relative height between the base and the support sleeve, so as to facilitate the support of different shell parts to be assembled.

[0040] To sum up, the bearing fixing device described in the utility model can not only prevent the steel balls from falling off during the rolling and closing process and reduce safety hazards, but also greatly improve its processing efficiency and effectively reduce processing costs, thereby meeting the needs of bearing closing processing of various specifications. Its overall structure is simple, the operation is convenient, and it is suitable for promotion and application.

[0041] Other details of the present invention are all conventional techniques known to those skilled in the art.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various changes and variations are possible. Any modifications, equivalent substitutions, improvements, etc. made using the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing fixing device for preventing steel balls from falling off, characterized in that: The invention comprises a pressing plate (1), a protective cap (2), a steel ball (3), a bearing (4), a base (5), a supporting sleeve (6) and a centering rod (7). A connecting hole (11) matching the centering rod (7) is provided at the bottom of the pressing plate (1), and an axial through hole matching the centering rod (7) is provided in the bearing (4); a plurality of supporting holes (21) matching the steel ball (3) are provided in the protective cap (2); the protective cap (2) is arranged at the bottom of the pressing plate (1) and is in contact with and connected to the outer side surface of the pressing plate (1); the steel ball (3) is arranged in the supporting hole (21) in the protective cap (2) and is in contact with and connected to the pressing plate (1); the bearing (4) is arranged below the pressing plate (1) through the base (5); a supporting sleeve (6) is provided on the outer side of the base (5); the centering rod (7) passes through the base (5) and the bearing (4) in sequence from bottom to top, and is connected to the pressing plate (1) through the connecting hole (11).

2. A bearing fixing device for preventing steel balls from falling off according to claim 1, characterized in that: The bottom of the pressing plate (1) is provided with an inwardly recessed accommodating cavity (12); the connecting hole (11) is arranged at the center of the accommodating cavity (12); a supporting portion (13) is formed between the accommodating cavity (12) and the outer side surface of the pressing plate (1); a plurality of steel ball holes (14) corresponding to the supporting holes (21) are arranged at the bottom of the supporting portion (13); the steel ball holes (14) can accommodate the steel balls (3); the steel balls (3) located in the protective cap (2) are in contact and connection with the pressing plate (1) through the steel ball holes (14); and a power connecting column (15) protruding outward is also provided at the top of the pressing plate (1); and the protective cap (2) arranged at the bottom of the pressing plate (1) is in contact and connection with the supporting portion (13).

3. A bearing fixing device for preventing steel balls from falling off according to claim 2, characterized in that: The protective cap (2) is configured as a cylindrical structure, a guide hole (22) corresponding to the accommodating cavity (12) is provided at the bottom of the protective cap (2), and a supporting ridge (23) corresponding to the accommodating cavity (12) is provided at the guide hole (22); wherein a plurality of supporting holes (21) located in the protective cap (2) are arranged in a ring shape at the bottom of the protective cap (2), and the steel ball hole (14) is arranged in a ring shape at the bottom of the supporting portion (13) and corresponds to the supporting hole (21).

4. A bearing fixing device for preventing steel balls from falling off according to claim 1, characterized in that: The base (5) is arranged in a cylindrical structure, the center of the base (5) has a through hole matching the centering rod (7), and a groove cavity (51) communicating with the through hole is arranged on the top of the base (5); the support sleeve (6) is sleeved on the outside of the base (5), and the height of the base (5) is greater than the height of the support sleeve (6).

5. A bearing fixing device for preventing steel balls from falling off according to claim 4, characterized in that: The support sleeve (6) is arranged in a circular ring structure, the center of the support sleeve (6) has a through hole matching the base (5), and an internal thread is arranged in the through hole of the support sleeve (6), and an external thread matching the internal thread is arranged on the outer side surface of the base (5), the support sleeve (6) and the base (5) are connected by a threaded manner, and a support ear (61) extending outward is arranged on the top of the support sleeve (6).

6. A bearing fixing device for preventing steel balls from falling off according to claim 1, characterized in that: The centering rod (7) is arranged in a cylindrical structure, and a connecting portion (71) matching the connecting hole (11) is provided on the top of the centering rod (7).

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