Needle bearing

Abstract

The utility model provides a needle bearing, and relates to the field of bearings. The needle bearing comprises an outer ring, a retainer and a rolling mechanism used for reducing loss generated when a bearing rotates, a limiting mechanism facilitating replacement of part of assemblies of the rolling mechanism is arranged above the retainer and comprises a limiting plate and a mounting groove, the limiting plate is arranged above the rolling mechanism, and the mounting groove is formed in the limiting plate. The mounting groove is formed in the top of the limiting plate, the side face of the retainer is rotationally connected with the inner wall of the outer ring, and the rolling mechanism is arranged on the side face of the retainer. According to the needle roller bearing, by arranging the limiting mechanism, when the needle roller needs to be assembled and disassembled, the needle roller can be taken down or installed by rotating the limiting plate in the rotating groove until the installing groove coincides with the rolling groove, the needle roller is prevented from being replaced one by one, the convenience of the needle roller assembling and disassembling link is improved, the workload is reduced, the time needed by operation is shortened, and the working efficiency is improved; and the maintenance cost of the bearing is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a needle roller bearing. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. These rollers are called needle rollers. Despite their small cross-section, the bearings still have a high load-bearing capacity. The thin, long rollers in needle roller bearings result in a compact radial structure. When the bore size and load capacity are the same as those of other bearing types, the outer diameter is the smallest, making them particularly suitable for support structures with restricted radial mounting dimensions.

[0003] Patent No. CN221647411U discloses a needle roller bearing. The needle roller bearing, by providing a first spring, a retaining ring, a frame, a third retaining groove, a first retaining groove, and a second retaining groove, can limit the frame through the retaining ring and the third retaining groove. This effectively prevents displacement of the frame during operation and reduces the impact on work when the frame is not operational. The bearing is easy to use and has a simple structure. However, the bearing's retaining method for the needle rollers requires replacement of each needle roller individually during operation, which is time-consuming, labor-intensive, and inefficient, increasing the cost of bearing maintenance. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present application provides a needle roller bearing that solves the problems mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present application is implemented through the following technical solutions: a needle roller bearing, comprising an outer ring, a retaining frame and a rolling mechanism for reducing the loss generated when the bearing rotates, a limiting mechanism is provided above the retaining frame to facilitate the replacement of some components of the rolling mechanism, the limiting mechanism comprises a limiting plate and a mounting groove, the limiting plate is provided above the rolling mechanism, the mounting groove is provided at the top of the limiting plate, the side surface of the retaining frame is rotatably connected to the inner wall of the outer ring, and the rolling mechanism is provided on the side surface of the retaining frame.

[0008] By adopting the above technical solution, the limit plate with the installation groove can be used to fix the position of the needle roller, which also provides convenience for the later replacement of the needle roller and reduces the time required for the maintenance of the needle roller bearing.

[0009] Preferably, the limiting mechanism further includes a rotation groove, which is opened on the upper side of the retaining frame and is rotatably connected to the limiting plate.

[0010] By adopting the above technical solution, the movable space of the limiting plate can be limited by the rotation groove, so that the rotation trajectory of the limiting plate is consistent with that of the retaining frame.

[0011] Preferably, a retaining mechanism for fixing the position of the limit plate is fixedly connected to one side of the top of the limit plate, and the retaining mechanism includes a retaining groove and a driving plate. The retaining groove is opened on the right side of the top of the retaining frame, and the bottom of the driving plate is fixedly connected to the right side of the top of the limit plate.

[0012] By adopting the above technical solution, the moving plate in the retaining groove can be used to move the limiting plate, thereby improving the efficiency of the step of rotating the limiting plate to expose the needle roller and reducing the production cost of the needle roller bearing.

[0013] Preferably, the retaining mechanism further comprises a spring, the spring is fixedly connected to the front side of the driving plate, and one end of the spring is fixedly connected to the front side of the retaining groove.

[0014] By adopting the above technical solution, the elastic force of the spring itself can be used to limit the position of the driving plate, thereby preventing the bearing vibration from driving the limit plate to rotate and enhancing the stability of the needle roller position.

[0015] Preferably, the rolling mechanism includes a rolling groove, the rolling groove is opened on the top of the retaining frame, and the rolling groove has the same diameter as the mounting groove.

[0016] By adopting the above technical solution, the rolling groove can be used to provide movement space for the needle roller.

[0017] Preferably, the rolling mechanism further includes a needle roller, which is rotatably connected to the rolling groove, and the number and spacing of the rolling groove, needle roller and mounting groove are consistent.

[0018] By adopting the above technical solution, the characteristics of the needle roller itself can be utilized, the structure is compact and the volume is small, the rotation accuracy is high, and the application range of the bearing is expanded.

[0019] (3) Beneficial effects

[0020] This application provides a needle roller bearing. It has the following beneficial effects:

[0021] 1. The needle roller bearing is provided with a limit mechanism. When the needle roller needs to be installed or removed, the limit plate in the rotating groove is rotated until the installation groove and the rolling groove coincide with each other. The needle roller can then be removed or installed, avoiding the need to replace the needle rollers one by one, improving the convenience of installing and removing the needle rollers, reducing the workload, shortening the operation time, improving work efficiency, and reducing the cost of bearing maintenance.

[0022] 2. The needle roller bearing is provided with a retaining mechanism to release the control of the driving plate. Under the drive of the spring's own elastic force, the driving plate in the retaining groove moves to its original position, thereby limiting the position of the limit plate, achieving the purpose of limiting the needle roller, enhancing the stability of the limit plate position, and preventing the needle roller from detaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a schematic diagram of the structure of the application from the right side and top view;

[0025] Figure 2 This is a schematic diagram of the outer circle structure of this application when viewed from the left and upward;

[0026] Figure 3 This is a schematic diagram of the structure of the application from the left side and top view;

[0027] Figure 4 This is an enlarged schematic diagram of the structure of Part A of this application;

[0028] Figure 5 This is a schematic diagram of the retainer structure from the right side of the application;

[0029] Figure 6 This is a schematic diagram of the partial structure of the limiting mechanism of this application from the left side and top view.

[0030] In the figure: 1. Outer ring; 2. Cage; 3. Rolling mechanism; 301. Rolling groove; 302. Needle roller; 4. Limiting mechanism; 401. Rotating groove; 402. Limiting plate; 403. Mounting groove; 5. Retaining mechanism; 501. Retaining groove; 502. Driving plate; 503. Spring. DETAILED DESCRIPTION

[0031] It should be noted that in the description of the embodiments of the present application, the terms "front, back, left, right, top, bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] The present application will be further described in detail below with the aid of drawings and examples.

[0033] With reference to Figure 1 , Figure 2 , Figure 5 and Figure 6 , the present application provides a needle bearing, comprising an outer ring 1, a retainer 2 and a rolling mechanism 3 for reducing the loss generated when the bearing rotates, a limiting mechanism 4 is arranged above the retainer 2 to facilitate replacement of part of the rolling mechanism 3 assembly, the limiting mechanism 4 comprises a limiting plate 402 and a mounting groove 403, the limiting plate 402 is arranged above the rolling mechanism 3, the mounting groove 403 is opened at the top of the limiting plate 402, a rotating groove 401 is opened on the side above the retainer 2, the rotating groove 401 is rotatably connected with the limiting plate 402, the side of the retainer 2 is rotatably connected with the inner wall of the outer ring 1, the rolling mechanism 3 is arranged on the side of the retainer 2, when the needle 302 needs to be disassembled and assembled, the limiting plate 402 in the rotating groove 401 is rotated until the mounting groove 403 coincides with the rolling groove 301, then the needle 302 can be removed or assembled.

[0034] With reference to Figure 3 , Figure 4 and Figure 6 , in one aspect of the present embodiment, a retaining mechanism 5 for fixing the position of the limiting plate 402 is fixedly connected to one side of the top of the limiting plate 402, the retaining mechanism 5 comprises a retaining groove 501 and a driving plate 502, the retaining groove 501 is opened at the top right side of the retainer 2, the bottom of the driving plate 502 is fixedly connected with the top right side of the limiting plate 402, a spring 503 is fixedly connected to the front side of the driving plate 502, one end of the spring 503 is fixedly connected with the front side of the retaining groove 501, the driving plate 502 in the retaining groove 501 moves to the original position under the driving of the spring 503 itself after the control of the driving plate 502 is released.

[0035] With reference to Figure 3 and Figure 5In one aspect of this embodiment, the rolling mechanism 3 includes a rolling groove 301, which is opened at the top of the retaining frame 2. The rolling groove 301 has the same diameter as the mounting groove 403. The rolling groove 301 is rotatably connected to a needle roller 302. The number and spacing of the rolling grooves 301, the needle rollers 302 and the mounting groove 403 are consistent, and the needle roller 302 rotates in the rolling groove 301.

[0036] All electrical equipment in this solution are powered by external power supplies.

[0037] Working principle: During use, when the needle roller 302 needs to be replaced, rotate the limit plate 402 in the rotating groove 401 until the installation groove 403 coincides with the rolling groove 301, and the needle roller 302 in the rolling groove 301 can be replaced. After the replacement is completed, release the control of the driving plate 502, and the driving plate 502 in the retaining groove 501 moves to its original position under the drive of the spring 503 itself.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A needle roller bearing comprising an outer ring (1), a cage (2) and a rolling mechanism (3) for reducing losses generated during bearing rotation, characterized in that: A limiting mechanism (4) is provided above the retaining frame (2) for facilitating replacement of some components of the rolling mechanism (3). The limiting mechanism (4) comprises a limiting plate (402) and a mounting groove (403). The limiting plate (402) is provided above the rolling mechanism (3). The mounting groove (403) is provided on the top of the limiting plate (402). The side surface of the retaining frame (2) is rotatably connected to the inner wall of the outer ring (1). The rolling mechanism (3) is provided on the side surface of the retaining frame (2).

2. The needle roller bearing according to claim 1, characterized in that: The limiting mechanism (4) further comprises a rotation groove (401), the rotation groove (401) being opened on the upper side of the retaining frame (2), and the rotation groove (401) being rotationally connected to the limiting plate (402).

3. The needle roller bearing according to claim 2, characterized in that: A retaining mechanism (5) for fixing the position of the limiting plate (402) is fixedly connected to one side of the top of the limiting plate (402), the retaining mechanism (5) comprising a retaining groove (501) and a driving plate (502), the retaining groove (501) being provided on the right side of the top of the retaining frame (2), and the bottom of the driving plate (502) being fixedly connected to the right side of the top of the limiting plate (402).

4. The needle roller bearing according to claim 3, characterized in that: The retaining mechanism (5) further comprises a spring (503), wherein the spring (503) is fixedly connected to the front side of the driving plate (502), and one end of the spring (503) is fixedly connected to the front side of the retaining groove (501).

5. The needle roller bearing according to claim 1, characterized in that: The rolling mechanism (3) comprises a rolling groove (301), the rolling groove (301) is opened on the top of the retaining frame (2), and the rolling groove (301) has the same diameter as the mounting groove (403).

6. The needle roller bearing according to claim 5, characterized in that: The rolling mechanism (3) further comprises a rolling needle (302), wherein the rolling needle (302) is rotatably connected to the rolling groove (301), and the number and spacing of the rolling groove (301), the rolling needle (302) and the mounting groove (403) are consistent.

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