Special cylindrical roller bearing for speed reducer
By designing multiple lubricant oil storage structures in cylindrical roller bearings for reducers, the problem of insufficient lubricant oil storage in the prior art is solved, extending the service life of lubricant oil and improving the lubricating effect of the rollers.
Patent Information
- Application Number
- CN202420935951.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing cylindrical roller bearings for reducers cannot multiple expansion of lubricating oil storage, resulting in an increase in the frequency of regular oil injection.
设计了一种减速装置专用圆柱滚子轴承,通过在轴承外环内壁上设置两个环形凹槽、保持架顶端和底端的环形阵列状滚珠连接、保持架外壁上的十二个第一通孔 As well as the twelve second through holes in the inner ring of the bearing, the storage amount of lubricating oil is increased.
By increasing the storage amount of lubricant, the service life of lubricant is extended, the frequency of regular oil injection is reduced, the lubricating effect of the roller is improved, and the corrosion between the rotating shaft and the inner ring of the bearing is avoided.
Smart Images
Figure CN222436838U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of roller bearings, and more specifically, particularly relates to a cylindrical roller bearing for a speed reducer. Background Art
[0002] Reducer bearings are special bearings used in various types of reducers. Spherical roller bearings are also used in large reducers, such as 24044 24048, etc. Cylindrical roller bearings are more commonly used in small reducers.
[0003] The cylindrical roller bearings used in reducers need to inject lubricating oil between the inner ring and the outer ring of the bearing during the process, and the oiling needs to be done regularly. The existing cylindrical roller bearings used in reducers cannot store lubricating oil in multiple ways, which leads to an increase in the frequency of regular oiling. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a cylindrical roller bearing specially used for a reduction device, so as to solve the problem that the cylindrical roller bearing used for a reducer needs to inject lubricating oil between the inner ring and the outer ring of the bearing during the process, and the oiling needs to be performed regularly. The existing cylindrical roller bearings for reducers cannot store lubricating oil in multiple ways, which leads to the problem of increased frequency of regular oiling.
[0005] The purpose and effect of the cylindrical roller bearing for the reduction device of the utility model are achieved by the following specific technical means:
[0006] A cylindrical roller bearing for a reduction gear comprises a bearing outer ring; a retaining frame is sleeved inside the bearing outer ring, twelve rollers are rotatably connected to the retaining frame, a bearing inner ring is sleeved inside the retaining frame, the outer wall of the roller contacts the inner wall of the bearing outer ring, and the inner wall of the roller contacts the outer wall of the bearing inner ring.
[0007] Furthermore, two grooves are provided on the inner wall of the outer ring of the bearing, and both grooves are annular groove structures. The two grooves together constitute a first storage structure for the lubricating oil. After the lubricating oil is filled, the lubricating oil can be additionally stored through the grooves, thereby increasing the storage amount of the lubricating oil between the outer ring of the bearing and the inner ring of the bearing, and achieving a better subsequent lubrication effect on the rollers.
[0008] Furthermore, the top and bottom end surfaces of the retaining frame are both rotatably connected to twelve balls in a circular array, the outer walls of the upper twelve balls are in contact with the top end surface of the inner wall of the bearing outer ring, and the outer walls of the lower twelve balls are in contact with the bottom end surface of the inner wall of the bearing outer ring. During use, the contact between the balls and the bearing outer ring can avoid direct contact between the retaining frame and the bearing outer ring, thereby improving the smoothness of the retaining frame during rotation.
[0009] Furthermore, twelve first through holes are provided in a circular array on the outer wall of the retaining frame, and all of the twelve first through holes are circular hole structures. The twelve first through holes together constitute a second storage structure for the lubricating oil. During use, the lubricating oil can be stored through the twelve first through holes, thereby further increasing the storage amount of the lubricating oil between the bearing outer ring and the bearing inner ring, and ultimately improving the lubrication effect of the roller.
[0010] Furthermore, a slot is provided on the inner wall of the bearing inner ring. The slot is a rectangular slot structure and a key slot. After the rotating shaft is connected to the inside of the bearing inner ring, a key can be inserted into the slot and the key slot on the rotating shaft, thereby preventing the rotating shaft from rotating in the bearing inner ring.
[0011] Furthermore, twelve second through holes are provided in a circular array on the inner wall of the bearing inner ring. The second through holes are circular hole structures. The twelve second through holes provided in the circular array together constitute a third storage structure for lubricating oil. During use, the lubricating oil can be stored through the twelve second through holes, thereby further increasing the storage amount of the lubricating oil between the bearing outer ring and the bearing inner ring, and ultimately improving the lubrication effect of the roller.
[0012] Furthermore, the lubricating oil in the twelve second through holes can contact the rotating shaft inserted in the inner ring of the bearing, thereby avoiding corrosion between the rotating shaft and the inner ring of the bearing, which in turn affects the disassembly of the rotating shaft.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] Balls are provided, and the contact between the balls and the outer ring of the bearing can avoid direct contact between the retaining frame and the outer ring of the bearing, thereby improving the smoothness of the retaining frame when rotating.
[0015] A first through hole and a second through hole are provided. On the one hand, the lubricating oil is stored through the twelve first through holes, and the storage amount of the lubricating oil between the outer ring of the bearing and the inner ring of the bearing is further increased, and the lubrication effect of the roller is finally improved; on the other hand, the lubricating oil can be stored through the twelve second through holes, and the storage amount of the lubricating oil between the outer ring of the bearing and the inner ring of the bearing is further increased, and the lubrication effect of the roller is finally improved. Moreover, because the lubricating oil in the twelve second through holes can contact the rotating shaft inserted in the inner ring of the bearing, rust between the rotating shaft and the inner ring of the bearing is avoided, which further affects the disassembly of the rotating shaft, and the practicability is high.
[0016] A slot is provided. After the rotating shaft is connected to the inner ring of the bearing, a key can be inserted into the slot and the keyway on the rotating shaft, thereby preventing the rotating shaft from rotating in the inner ring of the bearing.
[0017] Grooves are provided through which lubricating oil can be additionally stored, thereby increasing the storage amount of lubricating oil between the bearing outer ring and the bearing inner ring, and providing a better subsequent lubrication effect on the rollers. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a schematic diagram of the axial structure of a cylindrical roller bearing specially used for a reduction device.
[0019] Figure 2 The utility model is a schematic diagram of the axial structure of a cylindrical roller bearing specially used for a speed reducer after partial sectioning.
[0020] Figure 3 This utility model Figure 2 Schematic diagram of the main structure.
[0021] Figure 4 This utility model Figure 3 A is an enlarged structural diagram of FIG.
[0022] Figure 5 This utility model Figure 2 Schematic diagram of the axis view split structure.
[0023] Figure 6 It is a schematic diagram of the axial structure of the retaining frame, the ball and the first through hole of the utility model.
[0024] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:
[0025] 1. Bearing outer ring; 101. Groove; 2. Cage; 201. Ball; 202. First through hole; 3. Roller; 4. Bearing inner ring; 401. Slot; 402. Second through hole. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by ordinary technicians in the field to which the utility model belongs. Similar words such as "one", "an" or "the" used in the patent application specification and claims of the utility model do not indicate a quantitative limitation, but indicate the existence of at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0028] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples. Embodiment 1:
[0029] As attached Figure 1 To Attachment Figure 6 As shown:
[0030] The utility model provides a cylindrical roller bearing for a reduction gear, comprising a bearing outer ring 1; a retaining frame 2 is sleeved inside the bearing outer ring 1, twelve rollers 3 are rotatably connected to the retaining frame 2, a bearing inner ring 4 is sleeved inside the retaining frame 2, outer walls of the rollers 3 are in contact with the inner wall of the bearing outer ring 1, and inner walls of the rollers 3 are in contact with the outer wall of the bearing inner ring 4.
[0031] Among them, two grooves 101 are provided on the inner wall of the bearing outer ring 1, and both grooves 101 are annular groove structures. The two grooves 101 together constitute the first storage structure of the lubricating oil. After the lubricating oil is filled, the lubricating oil can be additionally stored through the grooves 101, thereby increasing the storage amount of the lubricating oil between the bearing outer ring 1 and the bearing inner ring 4, and the subsequent lubrication effect on the roller 3 is better.
[0032] Among them, the top end surface and the bottom end surface of the retaining frame 2 are both rotatably connected with twelve balls 201 in a circular array. The outer walls of the upper twelve balls 201 are in contact with the top end surface of the inner wall of the bearing outer ring 1, and the outer walls of the lower twelve balls 201 are in contact with the bottom end surface of the inner wall of the bearing outer ring 1. During use, the contact between the balls 201 and the bearing outer ring 1 can avoid direct contact between the retaining frame 2 and the bearing outer ring 1, which can improve the smoothness of the retaining frame 2 during rotation.
[0033] Among them, twelve first through holes 202 are opened in a circular array on the outer wall of the retaining frame 2, and the twelve first through holes 202 are all circular hole structures. The twelve first through holes 202 together constitute a second storage structure for lubricating oil. During use, the lubricating oil can be stored through the twelve first through holes 202, which further increases the storage amount of lubricating oil between the bearing outer ring 1 and the bearing inner ring 4, and ultimately improves the lubrication effect of the roller 3.
[0034] Among them, a slot 401 is opened on the inner wall of the bearing inner ring 4. The slot 401 is a rectangular slot structure and a key slot. After the rotating shaft is connected to the inside of the bearing inner ring 4, a key can be used to insert into the slot 401 and the key slot on the rotating shaft, which can prevent the rotating shaft from rotating in the bearing inner ring 4.
[0035] Among them, twelve second through holes 402 are opened in a circular array on the inner wall of the bearing inner ring 4, and the second through holes 402 are circular hole structures. The twelve second through holes 402 opened in a circular array together constitute a third storage structure for lubricating oil. During use, the lubricating oil can be stored through the twelve second through holes 402, which further increases the storage amount of the lubricating oil between the bearing outer ring 1 and the bearing inner ring 4, and ultimately improves the lubrication effect of the roller 3. Embodiment 2:
[0036] On the basis of the first embodiment, the lubricating oil in the twelve second through holes 402 can contact the rotating shaft inserted in the bearing inner ring 4, thereby avoiding corrosion between the rotating shaft and the bearing inner ring 4, which further affects the disassembly of the rotating shaft.
[0037] Working principle: Before use, oil needs to be injected from the gap between the outer ring 1 of the bearing and the inner ring 4 of the bearing. After the oil is injected, the oil will enter the gap between the outer ring 1 of the bearing and the inner ring 4 of the bearing, and contact the roller 3 to achieve lubrication of the roller 3. After the lubricating oil is injected, the lubricating oil will enter the groove 101, the first through hole 202, and the second through hole 402, thereby increasing the storage capacity of the lubricating oil.
[0038] During installation, the bearing outer ring 1 can be pressed onto the bearing seat on the reducer, the rotating shaft can be pressed into the bearing inner ring 4, and a key can be inserted into the slot 401 for fixing.
[0039] Although the present application has been described with reference to the above-mentioned embodiments, it will be appreciated by those skilled in the art that various changes may be made without departing from the concept and scope of the present application as defined by the appended claims. Although this specification contains many specific implementation details, these should not be interpreted as limitations on the scope of the present application, but as descriptions of features directed to specific embodiments. The scope of the present application is defined by the appended claims and their equivalents, and is not limited to the embodiments described above.
Claims
1. Cylindrical roller bearings for speed reducers, characterized by: The invention comprises a bearing outer ring (1); a retaining frame (2) is sleeved inside the bearing outer ring (1); twelve rollers (3) are rotatably connected to the retaining frame (2); a bearing inner ring (4) is sleeved inside the retaining frame (2); the outer walls of the rollers (3) are in contact with the inner wall of the bearing outer ring (1); and the inner walls of the rollers (3) are in contact with the outer wall of the bearing inner ring (4); two grooves (101) are provided on the inner wall of the bearing outer ring (1); both grooves (101) are annular groove structures; the two grooves (101) together form a first storage structure for lubricating oil; the top and bottom surfaces of the retaining frame (2) are rotatably connected to twelve balls (201) in an annular array; the outer walls of the upper twelve balls (201) are in contact with the top surface of the inner wall of the bearing outer ring (1); and the outer walls of the lower twelve balls (201) are in contact with the bottom surface of the inner wall of the bearing outer ring (1).
2. The cylindrical roller bearing for a reduction gear as claimed in claim 1, characterized in that: Twelve first through holes (202) are provided in a ring array on the outer wall of the retaining frame (2); the twelve first through holes (202) are all circular hole structures; the twelve first through holes (202) together form a second storage structure for lubricating oil.
3. The cylindrical roller bearing for a reduction gear as claimed in claim 2, characterized in that: A clamping groove (401) is provided on the inner wall of the bearing inner ring (4); the clamping groove (401) is a rectangular groove structure and is a key groove.
4. The cylindrical roller bearing for a reduction gear as claimed in claim 3, characterized in that: Twelve second through holes (402) are provided on the inner wall of the bearing inner ring (4) in a circular array. The second through holes (402) are circular hole structures. The twelve second through holes (402) provided in the circular array together constitute a third storage structure for lubricating oil.
5. The cylindrical roller bearing for a reduction gear as claimed in claim 4, characterized in that: The lubricating oil in the twelve second through holes (402) can contact the rotating shaft inserted in the bearing inner ring (4).