Linear bearing self-lubricating structure

Abstract

The utility model relates to the technical field of linear bearings, in particular to a linear bearing self-lubricating structure which is characterized in that a mounting groove is formed in a linear bearing body, circular ring bearings are mounted on the outer side and the back side of the linear bearing body, mounting seats are mounted on the side walls of the two sides in the mounting groove, cavities are formed in the mounting seats, and the circular ring bearings are arranged in the cavities. A containing groove is formed in one side of the interior of the cavity, a solid lubricant block is arranged in the containing groove, a plurality of second balls are installed in the cavity, the circular ring bearing is composed of a fixed outer ring and a rotating ring, the rotating ring is installed in the fixed outer ring, and a fixed groove is formed between the fixed outer ring and the rotating ring. A plurality of first balls are arranged in the fixing groove, a limiting groove is formed in the periphery of the outer surface of the rotating ring, a lubricating film is arranged at the bottom of the interior of the limiting groove, and the device is simple in structure, convenient to use and longer in service life.

Description

Technical Field

[0001] This utility model relates to the field of linear bearing technology, specifically to a self-lubricating structure for linear bearings. Background Technology

[0002] Metal linear bearings are a type of low-cost linear motion system used in conjunction with cylindrical shafts for unlimited stroke applications. They are widely used in sliding components of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, and printing machinery.

[0003] A search revealed Chinese Patent Publication No. CN215720235U, which discloses a self-lubricating linear bearing comprising an outer ring, a side ring, a cage, and balls. The outer ring is connected to the cage via the side ring, and the balls are located inside the cage. The side ring is connected to an inner ring via a support rod. A first rotating shaft is disposed inside the inner ring, and a roller and a main gear are fixedly sleeved on the side surface of the first rotating shaft. A second rotating shaft is disposed inside the inner ring, and a worm gear and a driven gear are fixedly sleeved on the side surface of the second rotating shaft. This self-lubricating linear bearing achieves rapid temperature reduction of internal components through the interaction of the outer ring, side ring, cage, balls, inner ring, first shaft, roller, main gear, second shaft, worm gear, driven gear, locating ring, first rotating ring, fan blade, second rotating ring, and gear groove. This solves the problem of poor heat dissipation in existing linear bearings. While this application addresses the issue of heat generated during operation due to rolling friction between the internal balls and the guide shaft, which can lead to significant heat buildup if the bearing operates at high speeds or bears heavy loads, and the inability to quickly dissipate this heat, the problem arises because the balls only generate significant heat when there is insufficient lubricant. This not only causes excessive internal heat but also increases friction, thus shortening the bearing's lifespan. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a self-lubricating structure for linear bearings. This aims to solve the problem that while existing technologies can address the issue of heat generated during operation due to rolling friction between the internal balls and the guide shaft, and the accumulation of heat can significantly impact the normal operation of the bearing if the linear bearing operates at high speeds or bears heavy loads, the existing technology cannot quickly dissipate heat. Furthermore, the balls only generate significant heat when there is insufficient lubricant, leading not only to excessive internal heat but also to increased friction, thus shortening the bearing's lifespan.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A self-lubricating structure for a linear bearing includes a connecting structure and a bearing structure, wherein the bearing structure is mounted on the back side of the connecting structure.

[0007] The bearing structure consists of a linear bearing body and an annular bearing. The linear bearing body has an internal mounting groove. Annular bearings are mounted on the outer and back sides of the linear bearing body. Mounting seats are mounted on both side walls of the mounting groove. Each mounting seat has a cavity. A placement groove is formed on one side of each cavity, and a solid lubricant block is placed inside the placement groove. Several second balls are installed inside the cavity. The annular bearing consists of a fixed outer ring and a rotating ring. A rotating ring is installed inside the fixed outer ring. A fixing groove is formed between the fixed outer ring and the rotating ring, and several first balls are placed inside the fixing groove. A limiting groove is formed around the outer surface of the rotating ring, and a lubricating film is provided at the bottom of the limiting groove.

[0008] Preferably, the connection structure consists of a connecting seat and a protective washer. A connecting groove is provided on the outer side of the connecting seat, and connecting grooves are provided on both sides of the connecting groove on the outer side of the connecting seat. A protective washer is fitted on the four walls inside the connecting groove.

[0009] Preferably, the first ball is installed in a limiting groove on the outer surface of the rotating ring, and the fixing outer ring is sleeved on the outer side of the first ball.

[0010] Preferably, the second ball is fixed inside the cavity.

[0011] Preferably, the rotating ring has a groove inside, and a wear-resistant pad is fitted on the four sides of the groove.

[0012] Preferably, the annular bearing is inserted into the interior of the mounting groove, and the groove is connected to the mounting groove.

[0013] Preferably, the connecting seat and the linear bearing body are integrally formed, and the connecting groove and the mounting groove are connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through its designed bearing structure, enables the second ball bearing in the cavity of the mounting seat on both sides of the mounting groove inside the linear bearing body to drive the guide shaft to slide when the guide shaft passes through the mounting groove inside the mounting groove. During the rotation of the ball bearing, it comes into contact with the solid lubricant block placed in the groove inside the cavity, thereby applying the fixed lubricant block to the outer surface of the second ball bearing, reducing friction and improving the bearing's movement efficiency. The guide shaft passes through the groove on the annular bearing, and the first ball bearing in the fixed groove between the rotating ring and the fixed outer ring enables the rotating ring to rotate, thereby driving the guide shaft to rotate. When the first ball bearing moves in the limiting groove on the outer surface of the rotating ring, it comes into contact with the lubricating film at the bottom of the limiting groove, thereby providing lubrication for the first ball bearing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the linear bearing body of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the annular bearing of this utility model;

[0019] Figure 4 This is a cross-sectional view of the internal structure of the linear bearing body of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the rotating ring of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the mounting base of this utility model.

[0022] In the diagram: 1. Connecting structure, 11. Connecting seat, 111. Connecting groove, 112. Connecting groove, 12. Protective washer, 2. Bearing structure, 21. Linear bearing body, 211. Mounting groove, 22. Circular bearing, 221. Fixed outer ring, 222. Fixed groove, 223. First ball, 224. Rotating ring, 225. Groove, 226. Wear-resistant pad, 227. Limiting groove, 228. Lubricating film, 23. Mounting seat, 231. Placement groove, 232. Fixed lubricant block, 233. Cavity, 24. Second ball. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example:

[0025] Please see Figures 1-6 A self-lubricating linear bearing structure includes a connecting structure 1 and a bearing structure 2. The bearing structure 2 is mounted on the back side of the connecting structure 1. The bearing structure 2 consists of a linear bearing body 21 and an annular bearing 22. The linear bearing body 21 has an installation groove 211 inside. Annular bearings 22 are mounted on the outer side and back side of the linear bearing body 21. Mounting seats 23 are mounted on both side walls inside the mounting groove 211. A cavity 233 is formed on the mounting seat 23. A placement groove 231 is formed on one side inside the cavity 233. A solid lubricant block is placed inside the placement groove 231. A plurality of second balls 24 are installed inside the cavity 233. The annular bearing 22 consists of a fixed outer ring 221 and a rotating ring 224. The rotating ring 224 is installed inside the fixed outer ring 221. A fixing groove 222 is formed between the fixed outer ring 221 and the rotating ring 224. A plurality of first balls 223 are placed inside the fixing groove 222. The outer surface of the rotating ring 224 is surrounded by... A limiting groove 227 is provided, and a lubricating film 228 is provided at the bottom of the limiting groove 227. When the guide shaft passes through the mounting groove 211 inside the linear bearing body 21, the second ball 24 in the cavity 233 on both sides of the mounting seat 23 inside the mounting groove 211 will drive the guide shaft to slide. During the rotation of the ball, it will contact the solid lubricant block in the groove 231 inside the cavity 233, thereby applying the fixed lubricant block 232 to the outer surface of the second ball 24, reducing friction and improving the movement efficiency of the bearing. The guide shaft will pass through the groove 225 on the ring bearing 22. The first ball 223 in the fixing groove 222 between the rotating ring 224 and the fixed outer ring 221 can make the rotating ring 224 rotate, thereby driving the guide shaft to rotate. When the first ball 223 moves in the limiting groove 227 on the outer surface of the rotating ring 224, it will contact the lubricating film 228 at the bottom of the limiting groove 227, thereby providing a lubrication effect for the first ball 223.

[0026] Please see Figure 1 The connecting structure 1 consists of a connecting seat 11 and a protective washer 12. A connecting groove 112 is provided on the outer side of the connecting seat 11. Connecting grooves 111 are provided on both sides of the connecting groove 112 on the outer side of the connecting seat 11. The protective washer 12 is fitted on the four walls inside the connecting groove 112. Through the connecting groove 112 on the connecting seat 11, the guide shaft can pass through the connecting groove 112 and be inserted into the mounting groove 211 inside the linear bearing. The protective washer 12 can protect the guide shaft and reduce the friction it is subjected to.

[0027] Please see Figure 3 and Figure 5The first ball 223 is installed in the limiting groove 227 on the outer surface of the rotating ring 224, and the fixed outer ring 221 is sleeved on the outside of the first ball 223. The first ball 223 in the fixing groove 222 between the rotating ring 224 and the fixed outer ring 221 can make the rotating ring 224 rotate, thereby driving the guide shaft to rotate. When the first ball 223 moves in the limiting groove 227 on the outer surface of the rotating ring 224, it will contact the lubricating film 228 at the bottom of the limiting groove 227, thereby providing lubrication for the first ball 223.

[0028] Please see Figure 4 and Figure 6 The second ball 24 is fixed inside the cavity 233. The second ball 24 in the cavity 23 on the mounting seats 23 on both sides of the mounting groove 211 will drive the guide shaft to slide. During the rotation of the ball, it will contact the solid lubricant block in the placement groove 231 inside the cavity 233, thereby applying the fixed lubricant block 232 to the outer surface of the second ball 24, reducing friction and improving the movement efficiency of the bearing.

[0029] Please see Figures 2-3 The rotating ring 224 has a groove 225 inside, and wear-resistant pads 226 are fitted on the four sides of the groove 225. The guide shaft passes through the groove 225 on the ring bearing 22. The wear-resistant pads 226 can greatly reduce the friction between the guide shaft and the ring bearing 22, thereby improving the service life.

[0030] Please see Figure 2 The ring bearing 22 is inserted into the inside of the mounting groove 211, and the groove 225 is connected to the mounting groove 211, which makes it easy to remove the ring bearing 22 for replacement.

[0031] Please see Figure 1 The connecting seat 11 and the linear bearing body 21 are integrally formed, and the connecting groove 112 and the mounting groove 211 are connected, so that the guide shaft can pass through the connecting groove 112 and be inserted into the mounting groove 211 inside the linear bearing.

[0032] Working principle: Through the connecting groove 112 on the connecting seat 11, the guide shaft can pass through the connecting groove 112 and be inserted into the mounting groove 211 inside the linear bearing. The protective washer 12 can protect the guide shaft and reduce the friction it receives. When the guide shaft passes through the mounting groove 211 inside the linear bearing body 21, the second ball 24 in the cavity 233 on both sides of the mounting seat 23 inside the mounting groove 211 will drive the guide shaft to slide. During the rotation of the ball, it will contact the solid lubricant block in the placement groove 231 inside the cavity 233, thereby applying the fixed lubricant block 232. The lubricant is applied to the outer surface of the second ball bearing 24 to reduce friction and improve the bearing's movement efficiency. The guide shaft passes through the groove 225 on the annular bearing 22. The first ball bearing 223 in the fixing groove 222 between the rotating ring 224 and the fixed outer ring 221 can make the rotating ring 224 rotate, thereby driving the guide shaft to rotate. When the first ball bearing 223 moves in the limiting groove 227 on the outer surface of the rotating ring 224, it will contact the lubricating film 228 at the bottom of the limiting groove 227, thereby providing lubrication for the first ball bearing 223. This device has a simple structure, is easy to use, and has a longer service life.

[0033] All technical features in this embodiment can be freely combined according to actual needs.

[0034] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A self-lubricating structure for a linear bearing, comprising a connecting structure (1) and a bearing structure (2), characterized in that: The bearing structure (2) is installed on the back side of the connecting structure (1); The bearing structure (2) consists of a linear bearing body (21) and an annular bearing (22). The linear bearing body (21) has an internal mounting groove (211). Annular bearings (22) are mounted on both the outer and back sides of the linear bearing body (21). Mounting seats (23) are mounted on both side walls of the mounting groove (211). A cavity (233) is formed on the mounting seat (23). A placement groove (231) is formed on one side of the cavity (233). A solid lubricant block is placed inside the placement groove (231). The cavity (233)... The inner part of the ring bearing (22) is equipped with several second balls (24). The ring bearing (22) is composed of a fixed outer ring (221) and a rotating ring (224). The rotating ring (224) is installed inside the fixed outer ring (221). A fixed groove (222) is provided between the fixed outer ring (221) and the rotating ring (224). Several first balls (223) are provided inside the fixed groove (222). A limiting groove (227) is provided around the outer surface of the rotating ring (224). A lubricating film (228) is provided at the bottom inside the limiting groove (227).

2. The self-lubricating structure of a linear bearing according to claim 1, characterized in that: The connection structure (1) consists of a connecting seat (11) and a protective washer (12). A connecting groove (112) is provided on the outer side of the connecting seat (11). Connecting grooves (111) are provided on both sides of the connecting groove (112) on the outer side of the connecting seat (11). A protective washer (12) is fitted on the four walls inside the connecting groove (112).

3. The linear bearing self-lubricating structure according to claim 1, characterized in that: The first ball (223) is installed in the limiting groove (227) on the outer surface of the rotating ring (224), and the fixed outer ring (221) is sleeved on the outer side of the first ball (223).

4. The self-lubricating structure of a linear bearing according to claim 1, characterized in that: The second ball (24) is fixed inside the cavity (233).

5. The self-lubricating structure of a linear bearing according to claim 1, characterized in that: The rotating ring (224) has a groove (225) inside, and wear-resistant pads (226) are fitted on the four sides of the groove (225).

6. The self-lubricating structure of a linear bearing according to claim 1, characterized in that: The annular bearing (22) is inserted into the interior of the mounting groove (211), and the groove (225) is connected to the mounting groove (211).

7. The self-lubricating structure of a linear bearing according to claim 2, characterized in that: The connecting seat (11) and the linear bearing body (21) are integrally formed, and the connecting groove (112) and the mounting groove (211) are connected.

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